Updated on 2024/11/19

写真a

 
MIYAMOTO Yuji
 

Research Areas

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Building structures and materials

Research History

  • Fukui University of Technology   Faculty of Engineering Department of Architecture and Civil Engineering   Chief Professor

    2021.4

  • Osaka University   Professor Emeritus

    2021.4

Professional Memberships

  • ARCHITECTURAL INSTITUTE OF JAPAN

  • JAPAN ASSOCIATION FOR EARTHQUAKE ENGINEERING

Qualification acquired

  • Architect (first class)

 

Papers

  • Fundamental Study on Response Properties of Structures Constructed on Lunar Regolith Reviewed

    Miyamoto, Y., Nakano, T. and Kobayashi, T

    pp.24-40   2024.2

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    The Artemis Program, for constructing the lunar base, is in progress. How to design and construct architectural and civil engineering structures in the lunar environment has become an important issue. The lunar surface is covered with soft sand, called regolith, and it is required to protect lunar bases and structures, as well as internal precision equipment, against vibrational disturbances such as moonquakes and meteorite collisions. Therefore, in this study, the static and cyclic triaxial compression tests of the regolith simulant were
    conducted. The reference strain and equivalent damping factor of the regolith simulant were smaller compared to sandy soil on Earth. In addition, a shaking table test using model specimens was conducted on the response properties of regolith ground alone and structures set on regolith ground. The buried foundation and pile foundation notably suppressed the horizontal response
    attributed to the rocking component compared to a direct foundation.

  • Seismic response and nonlinear characteristics of pile-soil springs in structures supported by pile group in granular soil on sloping bedrock Reviewed

    Takaharu Nakano and Yuji Miyamoto

    Japan Architectural Review   2022.11

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    In places prone to earthquakes, piles need to be designed to resist seismic damage. However, the characteristics of the soil significantly impact the seismic resistance of piles. Accordingly, in this study, shaking table tests and three-dimensional finite element analyses were conducted to investigate the seismic response and nonlinear characteristics of pile-soil springs of a structure supported by a pile group in granular soil on a sloping bedrock. The analytical experiments and simulation were conducted on a group of nine piles arranged in the shape of a square. The results showed that the constraint condition at the pile tip influenced the bending moment response of piles during large input motion, such as that observed during earthquakes. Furthermore, the pile location, direction of pile displacement, and depth was found to affect the influence of the sloping bedrock on the pile soil springs.

  • Shaking table test and numerical simulation of shallow foundation structures in seasonal frozen soil regions Reviewed

    Shuang Xing, Tong Wu, Yuebing Li, Yuji Miyamoto

    Soil Dynamics and Earthquake Engineering 159(2):107339   2022.8

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    In order to study seismic response properties and interaction mechanism of a frozen soil-structure dynamic interaction system in liquefiable soil, two shallow foundation structures with different natural frequencies were designed. By performing small-scale shaking table tests, dynamic response characteristics of two shallow foundation structures with different natural frequencies under seismic action were investigated in different freezing depths of the artificial-made frozen soil, and then a nonlinear finite element program was used to establish the dynamic coupling nonlinear calculation model of frozen soil-superstructure considering the gradient change of frozen soil stiffness and the inertial interaction of the superstructure, and the seismic response mechanism of frozen soil-structure nonlinear interaction system under the horizontal seismic excitation was explored further. The results show that the ground freezing restrains the seismic response of ground surface in some degree while increasing the seismic response of superstructure due to the decrease of interaction between frozen soil and structure, especially for the structure with a high natural frequency. Thus, the predominant period of ground, the dynamic characteristics of superstructure, the kind of seismic wave and the liquefaction degree of ground have great influences on the seismic response of a structure. Therefore, more attention should be paid to the influence of frozen soil on dynamic characteristics of a structure in frozen soil regions.

  • Seismic response of magnetically levitated house Reviewed

    Yuji Miyamoto, Takaharu Nakano, Atsushi Shimamura and Kentaro Sho

    Open Journal of Earthquake Research   Vol.11 ( 1 )   1 - 17   2022.2

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    This study explored the seismic response of a house supporting base sides with a polymeric displacement control material and by magnetically levitating the foundation base. In this paper, we explore the possibility and efficacy of a seis-mic-isolated detached house as described above from both a shaking table experiment of model and three-dimensional finite element analysis. The seis-mic-isolated model showed stable response and its acceleration response was significantly reduced compared to the base-fixed model in the shaking table test. Three-dimensional finite element analysis was possible to simulate the experimental results. In the seismic response analysis of a full-scale detached house, the seismic-isolated model showed response reduction and its residual displacement was smaller than that of the sliding-base isolation model.

  • Evaluation of lateral resistance of steel pile with wings in cyclic loading tests Reviewed

    Hisatoshi Kashiwa, Toshio Kobayashi, Yuji Miyamoto

    AIJ Journal of Technology and Design   24 ( 56 )   99 - 104   2018.2

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    The objective of this study is the evaluation of the lateral ground resistance around a steel pile with wings subjected cyclic loading at a pile cap. This paper presents the ground deformation and subgrade reaction - pile displacement relationships observed in situ tests under cyclic loading. The hysteresis curves have slip characteristics in case of steel pile with wings. The lateral ground resistance of a steel pile with wings can be evaluate in a limited depth by simplify method using solutions of elastic pile equation.

  • Relative Seismic Risk Evaluation of Various Buildings Based on an Input Wave Field Reviewed

    Masahiro lida, Masanori liba, Koichi Kusunoki, Yuji Miyamoto, Hiroshi Isoda

    INTERNATIONAL JOURNAL OF GEOMECHANICS   17 ( 9 )   2017.9

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    Seismic responses of various buildings are calculated by a three-dimensional (3D) linear method for examining the soil-building interaction based on an input seismic wave field in the reclaimed zone of Tokyo Bay in which ground motions include a considerable amount of surface waves. A seismic wave field means seismic waves propagate in a 3D medium. The method was recently proposed to adequately treat surface waves trapped by a deep (several kilometers) underground structure in a soil-building interaction system. First, seismic responses of a building were calculated at two soft-soil sites for three large earthquakes to understand the variations in building responses with reference to sites and earthquakes. Second, seismic responses of low-to high-rise reinforced concrete (RC) and steel buildings and wood buildings were compared at a soft-soil site for a large earthquake, evaluating the relative seismic risk of various buildings. Midrise RC and steel buildings shook more severely than low-rise and high-rise RC and steel buildings. Flexible wood buildings suffered extremely large interstory drifts, indicating the largest seismic risk. (C) 2017 American Society of Civil Engineers.

  • Influences of soil failure criterion on horizontal soil resistance of pile group Reviewed

    Chengyuan Ma, Takaharu Nakano, Yuji Miyamoto

    Journal of Structural and Construction Engineering   82 ( 736 )   813 - 821   2017.6

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    This paper discussed the influences on soil resistance of a pile group caused by different soil properties and failure criterions. Nonlinear static analyses were performed using 3"dimensional finite element method. The major conclusions of this paper can be summarized as follows- 1) Under the Mohr-Coulomb failure criterion, the strength of sand differs between triaxial compression and triaxial tensile. The difference determines the subgrade reaction of piles. 2) In the case of sandy soil subgrade reaction concentrates on front piles in a pile group. While in the case of cohesive soil, the concentration on front piles is softened by side piles.

  • Nonlinear lateral soil resistance around pile considering the effect of pile arrangement in pile group Reviewed

    Haruna Hirose, Takaharu Nakano, Yuji Miyamoto

    Journal of Structural and Construction Engineering   81 ( 726 )   1233 - 1241   2016.8

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    The dynamic nonlinear soil around each pile affects lateral load distribution and displacement of pile group. Therefore, shaking table tests were conducted to clarify the dynamic nonlinear behavior of soil around piles, and earlhquake response analyses were conducted to simulate the effect of the nonlinear soil-pile interaction system on response of the superstructure supported by pile group. The obtained result of these shaking tests and analytical studies are as follows
    1) Bending moment at each pile head depends on the location of each pile in pile group, 2) Lateral subgrade reaction around piles depends on the location of each pile in pile group, 3) Proposed lumped mass model well represents response of the superstructure and pile group.

  • Seismic Response Characteristics of a Building Supported by Pile Foundation in Frozen Soil Based on Shaking Table Test Reviewed

    Shuang Xing, Miyamoto Yuji

    JOURNAL OF EARTHQUAKE AND TSUNAMI   10 ( 2 )   2016.6

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    This paper focuses on the influence of frozen soil on seismic response of a building supported by pile foundation. Firstly, the saturated sand soil is frozen artificially, and then shaking table tests are conducted. Specifically, seismic responses of buildings with different natural frequencies and with different freezing depths of the saturated soil are investigated, respectively. In this study, it is confirmed that for buildings with high rigidity, the effect of interaction becomes smaller when the soil is frozen. Moreover, it is observed that the resonant frequency of frozen ground is closer to the natural frequency of superstructure, and thus the response of the superstructure becomes larger. It is also observed that the bending moment along the pile is remarkably reduced by improving the rigidity of the soil.

  • Nonlinear horizontal soil resistance of pile group foundation subjected to arbitary direction load Reviewed

    Takaharu Nakano, Yuji Miyamoto

    Journal of Structural and Construction Engineering   81 ( 721 )   505 - 514   2016

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    This paper presents the horizontal soil resistance of pile group foundation by the static analyses using 3-dimensional nonlinear finite element method. Springs both at the pile head and around pile shaft are evaluated and discussed. The major findings obtained from this study are summarized as follows: 1) the horizontal soil resistance is different depending on the location of the pile. 2) soil spring around the pile at the edge of pile group is remarkably influenced by the direction of loading. 3) group-factor of soil spring around the pile is smaller than that of spring at the pile head. 4) when displacement of the pile becomes larger, the difference of soil spring at each pile becomes larger.

  • Effects of strong nonlinearity of ground around piles or improved soil on seismic response of building supported by piles under very strong seismic motion Reviewed

    Shuang Xing, Hisatoshi Kashiwa, Takaharu Nakano, Yuji Miyamoto

    Journal of Structural and Construction Engineering   80 ( 710 )   583 - 591   2015

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    This paper describes effects of strong nonlinear interaction between soil and piles or improved soil on seismic response of a building supported by piles. Shaking table tests by large earthquake inputs were conducted using structure model supported by piles in dry sand. 3D-nonlinear analyses were also conducted to investigate the effects of strong nonlinearity of ground around piles or improved soil. It is obtained that strong nonlinearity of ground around piles or improved soil affects the response of superstructure and pile stress. Especially, the strong nonlinear behavior of ground around improved soil changes the response of superstructure and the lateral resistance of piles.

  • Study on seismic response of a building supported by piles in frozen soil at cold regions Reviewed

    Shuang Xing, Yuji Miyamoto

    Journal of Structural and Construction Engineering   80 ( 717 )   1667 - 1676   2015

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    This paper focuses on the influence of frozen soil on seismic response of a building supported by pile foundation. Firstly the saturated sand soil was frozen artificially and then shaking table tests were conducted. Secondly seismic responses of building with a different natural frequency or with a different freezing depth in the saturated soil were investigated respectively and then, bending moments acting on pile in saturated soil and frozen soil were also analyzed. Furthermore, three dimensional finite element analyses were also conducted to investigate the effects of frozen soil on seismic response of a building supported by pile foundation.

  • 21271 Study on Response of Base-Isolated Building in Oblique Collision to Retaining Wall

    OKUNAKA Ryosuke, MIYAMOTO Yuji, KASHIWA Hisatoshi

    Summaries of technical papers of annual meeting   2014   541 - 542   2014.9

  • Study on response of base-isolation building in oblique collision with retaining wall Reviewed

    Ryosuke Okunaka, Yuji Miyamoto, Hisatoshi Kashiwa, Syotaro Watanabe

    Journal of Structural and Construction Engineering   79 ( 706 )   1763 - 1771   2014

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    When large earthquake beyond the input level in the aseismic design occurs, a base-isolated building may collide with surrounding retaining wall. Then superstructure and base isolator are severely damaged and the building doesn't keep its performance. To address this subject, we study response of a base-isolation building in collision including oblique impact to retaining wall. This paper discusses experiments of base-isolated building model taking oblique collision into account. Based on the results of experiments, we analyze oblique collision in detail by 3D-FEM. Furthermore response of a real-scale base-isolation building is studied when building collides with retaining wall. As a result of these studies, we show the influence of oblique collision on response of base-isolation building, retaining wall and surrounding soil during extra-large earthquake.

  • Fundamental study on earthquake response reduction of base isolated spread foundation with backfilled by improved compound geo-material Reviewed

    Yuji Miyamoto, Atsushi Shimamura, Satoru Fujii, Fumiko Hoshizawa, Hisatoshi Kashiwa

    Journal of Structural and Construction Engineering   78 ( 691 )   1559 - 1567   2013.9

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    This paper addresses the developing of spread foundation surrounded with improved soil which reduces the response of the superstructure. The mechanical properties of the improved compound soil are investigated by laboratory tests. Then earthquake response behaviors of model structures are discussed with various contact conditions at the foundation bottom and different improved backfill soil around foundation by shaking table tests. Furthermore analysis results by 3D-nonlinear FEM are also discussed to clarify the effect of the contact conditions at the foundation bottom and the improved compound soil to seismic response of building.

  • 20278 Lateral Loading Tests of Steel Pile Combined with Ground Improvement around Pile : Part1: Outline of Experiment

    KATO Yuko, TAKADA Mitsumasa, KASHIWA Hisatoshi, KOBAYASHI Toshio, ODA Tatsuya, MIYAMOTO Yuji

    Summaries of technical papers of annual meeting   2013   555 - 556   2013.8

  • 20279 Lateral Loading Tests of Steel Pile Combined with Ground Improvement around Pile : Part2: Result of Experiment

    TAKADA Mitsumasa, KATO Yuko, KASHIWA Hisatoshi, KOBAYASHI Toshio, ODA Tatsuya, MIYAMOTO Yuji

    Summaries of technical papers of annual meeting   2013   557 - 558   2013.8

  • Fundamental study on response reduction of base-isolation building in collision to relating wall of improved compound geo-material Reviewed

    Atsushi Shimamura, Masashi Matsumoto, Ryosuke Okunaka, Hisatoshi Kashiwa, Yuji Miyamoto

    Journal of Structural and Construction Engineering   78 ( 684 )   309 - 317   2013.2

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    When large earthquake beyond the input level in the aseismic design occurs, a base-isolated building may collide to the surrounding retaining wall. Then superstructure and base isolator are severely damaged and the building doesn't keep its performance. To address the subject, we are developing retaining wall of improved soil which reduces the response of the superstructure. This paper discusses collision experiments of base-isolated building model to developed retaining wall of improved soil. Furthermore analysis results by a lumped mass-spring model and 3D-FEM are also discussed to clarify the effect of modified retaining wall to response of building in a collision.

  • Damage evaluation of pile cap during large earthquake based on simulation of centrifugal test focused on pile plasticity Reviewed

    Hisatoshi Kashiwa, Yuji Miyamoto

    Journal of Structural and Construction Engineering   78 ( 694 )   2133 - 2142   2013

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    Nonlinear soil-structure interaction effects under strong ground motions should be considered in the seismic design of pile foundation. Inorder to investigate influence of nonlinear soil-structure interaction, the centrifugal shaking table tests considering the plastic behavior ofpile cap are conducted. This paper presents the damage evaluation method of pile cap based on the simulation analysis of the centrifugalshaking table tests, in which the effects of local nonlinearity of pile-soil system on the seismic behavior of pile structures are clarified. Themajor findings obtained from this study are summarized as follows
    1) The test results are precisely simulated by the 3-dimensional finiteelement analysis 2) the slip and separation behavior between the pile and the soil do not affects the seismic behavior of pile structures verymuch, so the test results are simulated by winklerian model analysis 3) the plasticity of pile cap emphasizes the influence of the grounddisplacement subjected to pile on ductility ratio at pile.

  • Simulation analysis about damaged structure supported by piles in heavily damaged zone during the 1995 Hyogoken-Nambu Earthquake Reviewed

    Tkaharu Nakano, Hisatoshi Kashiwa, Yuji Miyamoto

    Journal of Structural and Construction Engineering   78 ( 692 )   1695 - 1704   2013

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    This paper presents the simulation analysis about damage of structure supported by pile subjected to very large seismic motion during the 1995 Hyogoken-Nambu Earthquake by 3D-FE analyses considering an effect of non-linearity between pile and soil. The input motion is evaluated by the observed record and 2D-FE analysis using the deep irregular underground model with vertical discontinuity. The major finings obtained from analyses are summarized as follows:1) the FE analysis can simulate the distribution of damage of pile cap in the observation in which the pile in group of 2 piles was damaged heavily, 2) In the instance, the subgrade reaction for pile in group of 2 piles is larger than in group of 3 or 4 piles, furthermore the subgrade reaction for pile in group of 3 or 4 piles is affected by the behavior of the adjacent building and decreases. These may be causes of the distribution of damage of pile cap, 3) the pile cap damage in the instance may be caused by the piles were subjected to the very large inertial force and the ground displacement at the same time.

  • 21556 The Vibration Characteristics by Microtremor Measurement and Wind Observation of Tutenkaku in Osaka

    YOKOMIZO Reiko, YAMAGUCHI Yoji, MIYAMOTO Yuji, KASHIWA Hisatoshi, TAKINO Atsuo

    Summaries of technical papers of annual meeting   2012   1111 - 1112   2012.9

  • Advanced technologies to reduce earthquake damage of structures

    Yuji Miyamoto

    大阪大学フォーラム2011 防災・減災・災害復興と国際協力 日中の経験に学ぶ   2011.10

  • Earthquake Response Reduction Considering Nonlinear Interaction between Composite Geomaterials and Foundation Reviewed

    Atsushi Shimamura, Hisatoshi Kashiwa, Yuji Miyamoto

    The 2011 World Congress on Advances in Structural Engineering and Mechanics   2011.9

  • Seismic Response Analysis of Structure Supported by Piles Subjected to Very Large Earthquake Based on 3D-FEM Reviewed

    Hisatoshi Kashiwa, Yuji Miyamoto

    The 2011 World Congress on Advances in Structural Engineering and Mechanics   2011.9

  • Study on the mechanical properties of a geo-material composed of soil using rubberchips and fibrous materials Reviewed

    Atsushi Shimamura, Miki Kishimoto, Hisatoshi Kashiwa, Yuji Miyamoto

    AIJ Journal of Technology and Design   17 ( 35 )   61 - 66   2011

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    Non-linear interaction between the soil and foundations is one of the means to affect the seismic responses of structure. Focusing on the ductility of the fibers and the elasticity of rubber-chips, authors have developed an artificial geo-material, which is stable up to a high strain region, by mixing cement, rubber-chips from scrap tires, and fibrous materials. This paper discusses the shear mechanism and the properties of the compound based on laboratory studies. Authors also expect that this compound would effect on reducing the environment load since it is made of scrap tires and waste soil generated in construction sites.

  • Seismic technology for a structure to mitigate earthquake damage

    Yuji Miyamoto

    生産と技術   61 ( 1 )   33   2009.1

  • Dynamic Characteristics of a SC Building in Kashiwazaki NPP site using Vibration Test -Part 2 Simulation Analysis- Reviewed

    Miyasaka E, K. Ishimura, T. Fujita, Y. Miyamoto, A. Suzuki

    Proc. of the 19th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT-19)   2007.8

  • Feasibility Study on Base Mat Uplift of Nuclear Power Plants Using Large-Scale Blast Excitation-Part 1: Measurement and Investigation of Ground Motion-, Reviewed

    Tanaka, H, H. Tanda, T. Suzuki, O. Kontani, K. Yabuuchi, S. Sawada, Y. Miyamoto

    Proc. of the 19th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT-19)   2007.8

  • Detailed Investigation of Pile Damage in Soft Soil during The 2003 TOKACHI-OKI Earthquake

    Miyamoto Y, K. Koyamada

    The 4th U.S.-Japan Workshop on Soil-Structure Interaction   2007.3

  • Nonlinear Behavior of Pile-Groups by Experimental Study-Vibration Tests of Structures Supported on 4-Piles and 25-Piles using Large Scale Blasts-

    Hijikata K, Y. Miyamoto

    The 4th U.S.-Japan Workshop on Soil-Structure Interaction   2007.3

  • Simulation Analysis of Damaged Pile during The 2003 TOKACHI-OKI Earthquake

    Koyamada K, Y. Miyamoto

    The 4th U.S.-Japan Workshop on Soil-Structure Interaction   2007.3

  • Field Investigation and Analysis Study of Damaged Pile Foundation During the 2003 Tokachi-oki Earthquake, Seismic Performance of Pile Foundation in Liquefied and Laterally Spreading Ground Reviewed

    K. Koyamada, Y. Miyamoto, K. Tokimatsu

    Geotechnical Special Publication ASCE   2005.11

  • Large Scale Vibration Tests on Pile-Group Effects Using Blast-Induced Ground Motion Reviewed

    Hijikata, K, H. Tanaka, T. Hashimoto, K. Fujiwara, Y. Miyamoto, O. Kontani

    Proc. of the 18th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT-18)   2005.8

  • Experimental Study on Pile-Group Effects Using Blast-Induced Ground Motion Reviewed

    Hashimoto T, H. Tanaka, T. Ishida, K. Fujiwara, Y. Miyamoto, A. Suzuki, K. Koyamada

    13th World Conf. on Earthquake Engineering   2004.8

  • Simulation Analyses for 3-D Responses of Pile-supported Structure in Liquefiable Sand Subjected to Blast-induced Ground Motion Reviewed

    Koyamada K, K. Hijikata, T. Ishida, H. Tanaka, O. Kontani, Y. Miyamoto, R. Nigbor

    13th World Conf. on Earthquake Engineering   2004.8

  • Experimental Study on Soil-Pile-Structure Interaction in Liquefiable Sand Subjected to Blast-induced Ground Motion Reviewed

    Hijikata K, T. Ishida, H. Tanaka, K. Koyamada, Y. Miyamoto, O. Kontani, R. Nigbor

    13th World Conf. on Earthquake Engineering   2004.8

  • Seismic Design of a Structure Supported on Pile Foundation Considering Dynamic Soil-Structure Interaction

    Miyamoto Y, K. Hijikata, H. Tanaka

    The 3rd U.S.-Japan Workshop on Soil-Structure Interaction   2004.3

  • Vibration Tests on Pile-Group Foundations Using Large-Scale Blast Excitation Reviewed

    Kontani, O, H. Saito, H. Tanaka, Y. Kobayashi, K. Fujiwara, Y. Miyamoto, A. Suzuki

    Proc. of the 17th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT-17)   2003.8

  • A study on building risk monitoring using wireless sensor network MICA mote Reviewed

    N Kurata, BF Spencer, M Ruiz-Sandoval, Y Miyamoto, Y Sako

    STRUCTURAL HEALTH MONITORING AND INTELLIGENT INFRASTRUCTURE, VOLS 1 AND 2   353 - 357   2003

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    In this paper, a risk monitoring of buildings for natural and man-made hazards mitigation is discussed. Ubiquitous monitoring using a network of wireless sensors is one of the most promising emerging technologies for this purpose. Recently, a smart sensor based on the Berkeley mote platform was introduced, and application to the next generation of structural health monitoring and control was proposed (Spencer et al. 2002, Spencer 2003). Herein, the performance of the latest version of the "mote", called MICA mote, is investigated through shaking table tests of a two story steel structure. The MICA mote as a wireless acceleration sensor is shown to have sufficient performance for the intended purpose.

  • Dynamic health monitoring for a building model using a BOCDA based fiber optic distributed sensor Reviewed

    M Imai, Y Sako, S Miura, Y Miyamoto, SSL Ong, K Hotate

    STRUCTURAL HEALTH MONITORING AND INTELLIGENT INFRASTRUCTURE, VOLS 1 AND 2   241 - 246   2003

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    A monitoring technology is desired for checking structural health or damage. Fiber optics is considered to be a promising technology This paper describes an application of a Brillouin Optical Correlation Domain Analysis (BOCDA) system, that is capable of high spatial resolution and dynamic strain sensing, to structural health monitoring. With this system, more detailed information on structural health can be obtained relating to material strain than with customary techniques. For application to structural health monitoring, we conducted a building model experiment to check the performance of the BOCDA system. The model's dynamic strain response to earthquake waveforms was investigated using a BOCDA system. Readings from the system were in good agreement with strain gauge readings. We confirmed the occurrence of residual strain and deformation under the natural frequency caused by the damage. The BOCDA system shows high potential for dynamic strain measurement in structural health monitoring applications.

  • Seismic damage monitoring with optical motion tracking Reviewed

    K Kanda, Y Miyamoto, A Kondo, M Oshio

    STRUCTURAL HEALTH MONITORING AND INTELLIGENT INFRASTRUCTURE, VOLS 1 AND 2   521 - 528   2003

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    The objective of this research is that optical motion tracking technologies are applied to measuring earthquake induced motions and detecting seismic damage of interior elements with surveillance cameras to reduce risks in a building. Shaking table tests were carried out to evaluate the optical system's ability to detect structural collapse and overturning of interior elements. The movement of two-story frame structures and rectangular pieces of wood on the shaking table were monitored using conventional video cameras. Results from this exploratory study show that optical measurements are promising in terms of capturing small to large deformations and identifying various kinds of seismic damage.

  • Simulation Analysis of Seismic Tests of A Pile-Supported Structure in Liquefiable Sand Using Large-Scale Blast Excitation Reviewed

    Kontani O, H. Tanaka, T. Ishida, Y. Miyamoto, K. Koyamada

    Proc. of the 16th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT-16)   2001.8

  • Pile Foundation Response Due to Soil Lateral Spreading During Hyogo-ken Nanbu Earthquake

    Koyamada K, Y. Miyamoto, Y. Sako

    The 2nd U.S.-Japan Workshop on Soil-Structure Interaction   2001.3

  • Pile Response during Earthquake and Performance Evaluation of Pile Foundation

    Miyamoto Y

    The 2nd U.S.-Japan Workshop on Soil-Structure Interaction   2001.3

  • Seismic Safety Evaluation of An Existing Tank Supported by Piles in Liquefiable Ground Reviewed

    Koyama K, Y. Sunasaka, Y. Morioka, Y. Miyamoto

    Proc. of 12th World Conf. on Earthquake Engineering   2000.1

  • Shaking table test and lateral loading test for pile foundation in saturated sand Reviewed

    N Adachi, Y Miyamoto, K Koyamada

    CENTRIFUGE 98, VOL 1   289 - 294   1998

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    Dynamic centrifuge tests were performed on a four-pile group foundation model embedded in saturated sand deposits and subjected to centrifugal acceleration of 45g. A lateral loading test at the pile head was also performed to study the inertial effects of the structure. Correlation analyses using a beam element model with nonlinear interaction springs taking into account the effective stress were conducted to investigate the bending moment of the pile and the interaction springs during strong earthquakes. The test and analytical results indicated that the excess pore water pressure was generated mainly by earthquake motion of the sand layers. The pile bending moments are greatly affected by the inertial force of the structure, and the effect of the inertial force of the structure reaches deeper in the pile due to the generation of excess pore water. The nonlinearity of both shear and lateral soil springs are remarkably affected by the generation of excess pore water.

  • Centrifuge Model Tests of Pile Foundation in Liquefiable Sand Deposit Reviewed

    Fukuoka A, N. Adachi, Y. Miyamoto, Y. Sako

    Proc. of 11th World Conf. on Earthquake Engineering   1996.6

  • Dynamic Interaction of Soil and Composite Foundation Reviewed

    Sako Y, Y. Miyamoto, E. Kitamura

    Proc. of 11th World Conf. on Earthquake Engineering   1996.6

  • Dynamic soil-structure interaction of embedded structure Reviewed

    Fukuoka A, Y. Ohtsuka, Y. Miyamoto, H. Kase, T. Taira, K. Kusakabe, M. Iguchi

    Proc. of the 13th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT-13)   1995.8

  • Pile Foundation Response in Liquefiable Soil Deposit during Strong Earthquakes (Centrifugal test for pile foundation model and correlation analysis) Reviewed

    Miyamoto Y, K. Miura, R.F. Scott, B. Hushmand

    日本建築学会構造系論文報告集   1992.9

  • DYNAMIC BEHAVIOR OF PILE GROUP IN LIQUEFIED SAND DEPOSIT Reviewed

    Y MIYAMOTO, Y SAKO, K MIURA, RF SCOTT, B HUSHMAND

    PROCEEDINGS OF THE TENTH WORLD CONFERENCE ON EARTHQUAKE ENGINEERING, VOLS 1-10   1749 - 1754   1992

  • DYNAMIC BEHAVIORS OF A COMPOSITE FOUNDATION Reviewed

    K URAO, K MASUDA, E KITAMURA, Y MIYAMOTO, A FUKUOKA

    PROCEEDINGS OF THE TENTH WORLD CONFERENCE ON EARTHQUAKE ENGINEERING, VOLS 1-10   1801 - 1806   1992

  • Forced Vibration Test on Large Scale Model on Soft Rock Site (Embedment effect test on soil-structure interaction) Reviewed

    Kobayashi T, A. Fukuoka, M. Izumi, Y. Miyamoto, Y. Ohtsuka, T. Nasuda

    Proc. of the 11th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT-11)   1991.8

  • Dynamic Soil-Structure Interaction Analysis Considering Diaphragm Wall and Pile Group Reviewed

    Masuda K, E. Kitamura, K. Miura, Y. Miyamoto

    Proc. of Int. Conf. on Computational Engineering Science   1991.4

  • EXPERIMENTAL STUDIES ON AN EMBEDDED STRUCTURE-SOIL INTERACTION Reviewed

    Y MIYAMOTO, Y OHTSUKA, A FUKUOKA, M IZUMI, T NASUDA

    SECOND INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN GEOTECHNICAL EARTHQUAKE ENGINEERING AND SOIL DYNAMICS, VOLS 1 AND 2   845 - 852   1991

  • STUDY ON DYNAMIC CHARACTERISTICS OF A PILE GROUP FOUNDATION Reviewed

    T KOBORI, M NAKAZAWA, K HIJIKATA, Y KOBAYASHI, K MIURA, Y MIYAMOTO, T MOROI

    SECOND INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN GEOTECHNICAL EARTHQUAKE ENGINEERING AND SOIL DYNAMICS, VOLS 1 AND 2   853 - 860   1991

  • Forced Vibration Test and its Analytical Study for Embedded Foundation Supported by Pile Group Reviewed

    Urao K, K. Masuda, E. Kitamura, F. Sasaki, K. Ueno, Y. Miyamoto, T. Moroi

    Proc. of 9th World Conf. on Earthquake Engineering   1988.8

  • Simulation Analysis of Forced Vibration Test for Actual Pile Foundation by Thin Layer Method Reviewed

    Masuda K, F. Sasaki, K. Urao, K. Ueno, Y. Miyamoto

    Proc. of Reliability and Robustness of Engineering Software Conf.   1987.9

  • Boundary Elements Superposition Method to Solve Dynamic Soil-Structure Interaction Reviewed

    Miura K, K. Masuda, F. Sasaki, Y. Miyamoto, K. Urao

    Proc. of Fifth Int. Conf. on Boundary Elements   1983.11

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Awards

  • Outstanding Research Award for achievement and contribution to International Symposium for Advanced Materials Research(ISAMR) 2018.08

    2018.8  

    MIYAMOTO Yuji

Research Projects

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