Details of a Researcher - Kohiyama, Masayuki

Kohiyama, Masayuki

写真a

Affiliation: Faculty of Science and Technology, Department of System Design Engineering （Yagami）

Position: Professor

Related Websites

https://kohiyama.sd.keio.ac.jp

External Links

Message from the Faculty Member 【 Display / hide 】

We believe that engineers need to improve their communication skills, problem finding/solving skills, and leadership. By increasing the trust of engineers, excellent products can become more widespread and society can be enriched. the more excellent products will spread and the society will be enriched. In our research activities, we aim to cultivate these skills through uncompromising discussions.

Profile Summary 【 Display / hide 】

This laboratory focuses on performance-based design and optimal design of structures that realize architectural and civil engineering structures with the performance demanded by the users and owners. In order to design the society that has the secure and resilient mechanisms against disasters, the disaster reduction systems and disaster-resistant housing and communities are extensively studied, in which risk evaluation and damage estimation of structures take a leading part.

Career 【 Display / hide 】

1995.04

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1996.03

Engineer, Architectural and Engineering Design Group, Kajima Corporation
1996.04

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1999.03

Research Engineer, Kajima Technical Research Institute, Kajima Corporation
1999.04

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2001.03

Research Scientist, Earthquake Disaster Mitigation Research Center, Riken
2001.04

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2005.03

Research Associate, Institute of Industrial Science, The University of Tokyo
2004.04

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2005.03

Postdoctoral Fellow of Japan Society of Promotion of Science, and Visiting Associate Professor of Stanford University

Academic Background 【 Display / hide 】

1993.03

Kyoto University, Faculty of Engineering, School of Architecture

University, Graduated
1995.03

Kyoto University, Graduate School of Engineering, Department of Architecture and Architectural Engineering

Graduate School, Completed, Master's course

Academic Degrees 【 Display / hide 】

Doctor of Informatics, Kyoto University, Dissertation, 2002.03

Licenses and Qualifications 【 Display / hide 】

first-class registered architect, 1998.02

Research Areas 【 Display / hide 】

Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Structure engineering and earthquake engineering (Structural Engineering, Earthquake Engineering, Maintenance Management Engineering)
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Building structures and materials (Building Construction/Material)
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Social systems engineering (Social System Engineering/Safety System)
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Safety engineering (Social System Engineering/Safety System)
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Disaster prevention engineering (Natural Disaster Science)

Research Keywords 【 Display / hide 】

Earthquake Engineering
Architectural Structural Engineering

Research Themes 【 Display / hide 】

設備被害を軽減するブロードキャスト対応制震システム,

2016

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2019

　View Summary

建物内の設備機器と連携して地震時の機能維持を図る，高度な地震対応力を有するアクティブ／セミアクティブ制震システムの実現を目指す。
Cooperative Control of a Building Structure and Multiple Instruments to Enhance Sustainability of their Functions,

2012

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2015

　View Summary

本研究は，建物の制振装置と建物内の機器の制振装置を協調的に動作させる効果的な手法の提案を目的とする。建物内に制振装置を持つ複数の機器が導入されたとき，機能維持のための合理的な制御方法を確立するとともに，制御装置間の通信方法を制御性能・信頼性・保守性・保全性などの観点を踏まえ構築することを目指す。
Autonomous Cooperative Control of a Building-Elevator System Under Long Period Ground Motion,

2010

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2012

　View Summary

In order to reduce elevator rope damage in a high-rise building due to an earthquake, cooperative control of vibration controllers for a building and elevator rope is studied.

Books 【 Display / hide 】

都市・建築レジリエンスデザイン入門

小檜山　雅之，ホルヘ・アルマザン，紙田　和代, 慶應義塾大学出版会, 2020.10
Guidebook of Recommendations for Loads on Buildings

Architectural Institute of Japan, Architectural Institute of Japan, 2016.02

Scope: pp. 1-6

　View Summary

日本建築学会の2015年版「建築物荷重指針・同解説」を活用し性能設計を行うため、設計の流れや設計例、詳細な解説を記載。１章「性能設計の実現に向けて」の1.1節「目標性能水準設定の基本的な考え方と設計者の役割」の執筆を担当。
High-Performance Computing for Structural Mechanics and Earthquake/Tsunami Engineering

Makoto Ohsaki, Tomoshi Miyamura, Masayuki Kohiyama, Takuzo Yamashita, and Hiroshi Akiba, Springer International Publishing, 2015.11

Scope: Seismic Response Simulation of Building Structures (pp. 105-139)

　View Summary

In this chapter, we present an overview of the E-Simulator for application to seismic response analysis of building structures. Accuracy and computational performance of simulation using the E-Simulator are discussed through examples of seismic response analysis of a four-story steel frame, buckling analysis of a column, and simulations of static cyclic responses of a composite beam and an exterior wall. Results of seismic response analysis with fixed base as well as soil-structure interaction analysis are presented for a high-rise building frame. Computational performance using the K computer is also discussed.
Recommendations for Loads on Buildings (2015)

Architectural Institute of Japan, Architectural Institute of Japan, 2015.02

Scope: pp. 95-112

　View Summary

日本建築学会による，建築物の構造設計の際に用いる荷重について，基本理念や考え方を示した指針。１章総則の1.2節基本概念と1.3節用語，２章荷重の種類と組合せの2.1節荷重の種類，2.2節荷重の基本値，2.3節荷重の組合せと要求性能の執筆を担当。
Excelで学ぶ地震リスク評価

小檜山雅之, 技報堂出版, 2011.08

Scope: ４章フラジリティと損傷度の評価, pp. 39-61

　View Summary

日本建築学会荷重運営委員会信頼性工学利用小委員会が，建築工学における確率・統計の利用の普及活動の一環として出版。地震リスク評価について，いくつかの例題をExcel を使って解くことで，ひととおり学べる内容となっている。４章フラジリティと損傷度の評価の執筆を担当。

Papers 【 Display / hide 】

Fundamental Study of Linear Quadratic Regulator Design for a Seismic Control System to Improve Resilience of a Medical Facility

Masayuki KOHIYAMA, Kento WAKABAYASHI, and Daigo TAKAHASHI

Journal of Structural Engineering （Architectural Institute of Japan) 68B 415 - 424 2022.04

Research paper (scientific journal), Joint Work, Lead author, Last author, Corresponding author, Accepted, ISSN 0910-8033

　View Summary

Regional base hospitals require high performance to maintain their functions even in the event of a large earthquake. This study proposes a method to design the parameters of a linear quadratic regulator (LQR) for a seismic control device aiming at improving the resilience of a medical facility. First, fault tree analysis was conducted to reveal the factors that hinder the recovery of medical facilities. The fragility curves and recovery-time probability models were constructed for medical devices based on the literature review and the interviews with medical device manufacturers. Using these models, the recovery curve, which is the relationship between the functional level and time, can be evaluated for the building–medical equipment system under an assumed earthquake ground motion. We propose to minimize the time to recover up to the defined functional level, 95% or 80%, in designing parameters for an LQR control system. The effectiveness of the proposed control design method was investigated for a building with a control device installed on its top floor, and it was confirmed that the proposed method improved the resilience performance compared with the conventional control method.
- Access to Document (DOI)
Fundamental Study of Q–Δ Resonance Considering Higher-Order Modes by Shaking Table Experiments and Finite Element Analysis

Ryosuke ANAMIZU, Masayuki KOHIYAMA

Journal of Structural Engineering （Architectural Institute of Japan) 68B 386 - 396 2022.04

Research paper (scientific journal), Joint Work, Accepted, ISSN 0910-8033

　View Summary

The Q–Δ effect is a phenomenon that a column with different lateral stiffness generates a restoring torsional moment owing to geometric nonlinearity when its top displaces in two horizontal directions simultaneously. The Q–Δ resonance that is resonance of a torsional mode induced by the periodic torsional moment due to the Q–Δ effect could cause considerable torsional vibration even in non-eccentric buildings. However, the Q–Δ resonance in higher-order modes has not been investigated well. We first constructed a model of a two-story non-eccentricity structure and derived the conditions of the Q–Δ resonance considering higher-order modes. Then, we conducted shaking table experiments and finite element analysis to reproduce the experiments. As a result, it was confirmed that the second mode in the torsional direction was excited as predicted by the derived Q–Δ resonance condition. Moreover, the finite element analysis could reproduce the experimental result with high accuracy.
- Access to Document (DOI)
Torsional response of a bisymmetric structure induced by bending–torsion interaction in vertical members

Kohiyama M., Yokoyama H., Maki S.

Japan Architectural Review （Wiley) 5 （ 1 ） 3 - 19 2022.01

Research paper (scientific journal), Joint Work, Lead author, Last author, Corresponding author, Accepted

　View Summary

The biaxially symmetric column induces torsional moment owing to the bending–torsion interaction when the top of the column is given horizontal displacement in the two directions of the principal axes of the cross section and the rotation of the column ends around the axes is constrained. Hence, horizontal ground motions in two directions can cause non-negligible torsional vibration in a high-rise building owing to autoparametric resonance. To investigate this phenomenon, in this study, we focus on a single-story structure with an aggregated column, which is a model for columns or core structures in tall buildings and is assumed to be an elastic Euler beam; subsequently we derive the equations of motion under horizontal ground motions in two directions. The resonance condition in the torsional direction is also investigated. Time-series response analyses are performed for input ground motions of harmonic waves, white noise, acceleration records of prior earthquakes, and a long-period design wave, and the relationship between the ratio of two translational natural frequencies and the increase in maximum responses is explained. The results demonstrate that the absolute acceleration response to the long-period design wave could increase by more than 50% in the worst-case scenario.
- Access to Document (DOI)
火山災害対応における認知バイアスを克服するための訓練ツール

Yuzo KONNO, Honoka TAKASHIMA, Masayuki KOHIYAMA, Mitsuhiro YOSHIMOTO, Tomohiro KUBO

Journal of Social Safety Science （Institute of Social Safety Science) （ 39 ） 233 - 243 2021.11

Research paper (scientific journal), Joint Work, Accepted, ISSN 1345-2088

　View Summary

In recent disasters, there have been many cases that people failed to escape despite evacuation advisories or did not make appropriate preparations in advance. One of the possible causes is the influence of cognitive bias. However, countermeasures against cognitive bias have not been developed in community disaster management. In this study, we developed a training tool in the form of web application software to overcome cognitive bias by acquiring knowledge about possible cognitive bias in response to volcanic disasters and discussing countermeasures with community members. The effectiveness of the tool was verified in workshops held in Fujiyoshida City. This training tool allows residents to conduct training on their own using a video conferencing system.
- Access to Document (DOI)
Experiment of torsional response induced by the Q–delta resonance

Mizutori F., Kohiyama M.

The Structural Design of Tall and Special Buildings （Wiley) 30 （ 4 ） 2021.03

Research paper (scientific journal), Joint Work, Accepted, ISSN 15417794

　View Summary

Because of geometric nonlinearities, vibrations in two horizontal directions can generate a torsional moment that induces a torsional response, even in a structure with no eccentricity; we term this phenomenon Q–Δ effect. In this study, the torsional response caused by the Q–Δ resonance was investigated by performing a shaking table test that involves a single-layer symmetric specimen. The specimen was designed and fabricated by focusing on one of two resonance conditions. Its moment of inertia was adjustable by changing locations of weights, and the natural frequency in the torsional mode could be modified. We developed a numerical model of the specimen, in which the columns connected to the slab were integrated into an elastic Euler beam. It was confirmed that the torsional response increased near the predicted Q–Δ resonance point. In addition, the acceleration at the corner of the slab was significantly increased. The formulated equations of motion provided a better prediction of the actual phenomena. Because the specimen corresponds to a stiff and slender high-rise building when converted into a full scale, the result suggests a need to be aware of the risk of torsional response increase due to the Q–Δ resonance.
- Access to Document (DOI)

Papers, etc., Registered in KOARA 【 Display / hide 】

Broadcast responsive vibration control system to reduce damage to facilities

Kohiyama, Masayuki

科学研究費補助金研究成果報告書 2019
Cooperative control of a building and equipment to enhance the functional maintainability

Kohiyama, Masayuki

科学研究費補助金研究成果報告書 2015
Structural assesment and evacuation guidance using small robots

Kohiyama, Masayuki

科学研究費補助金研究成果報告書 2012
Autonomous cooperative control of building-elevator system under long period ground motion

Kohiyama, Masayuki

科学研究費補助金研究成果報告書 2012

Reviews, Commentaries, etc. 【 Display / hide 】

座談会：震災復興から考えるレジリエントな社会

菅原昭彦，福迫昌之，紙田和代，小檜山雅之，厳網林

三田評論 (慶應義塾大学出版会) ( 1253 ) 10 - 26 2021.03

Article, review, commentary, editorial, etc. (bulletin of university, research institution), Joint Work, ISSN 1343-618X
Editorial: Innovative methodologies for resilient buildings and cities

Takewaki I., Kohiyama M., Trombetti T., Tesfamariam S., Lu X.

Frontiers in Built Environment (Frontiers in Built Environment) 5 2019.07
- Access to Document (DOI)
細分化された学問と分断された世界をつなぐ

Masayuki KOHIYAMA

ACe 建設業界 (一般社団法人日本建設業連合会) 80 26 - 26 2017.12

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Single Work, ISSN 21861862
東日本大震災・熊本地震災害の教訓を生かした建築・まちづくり～建物の「社会性」向上に向けて～

Masayuki KOHIYAMA

月刊不動産流通 (不動産流通研究所) ( 419 ) 8 - 9 2017.04

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Single Work, ISSN 0286-388X
阪神・淡路大震災20 年シンポジウム「地震被害の軽減に向けた研究者たちのメッセージ―阪神・淡路大震災20 年：地震関連科学の到達点と新たな決意―」開催報告

Masayuki KOHIYAMA

JAEE Newsletter (Japan Association for Earthquake Engineering) 4 ( 1 ) 9 - 12 2015.04

Article, review, commentary, editorial, etc. (scientific journal), Single Work

Presentations 【 Display / hide 】

離散直交基底S変換のランダム位相スペクトログラムによる模擬地震動生成の妥当性の検討

小山裕輝，小檜山雅之

日本地震工学会・大会－2021 (オンライン開催) ,

2021.11

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2021.12
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Oral presentation (general), 日本地震工学会
Experiment on Torsional Response of Symmetric Structure Induced by Q–Δ Resonance

Fumiya Mizutori, Hiroki Yokoyama, and Masayuki Kohiyama

The 17th World Conference on Earthquake Engineering (17WCEE) (Sendai) ,

2021.09

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2021.10
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Poster presentation, Japan Association for Earthquake Engineering
How to Popularize Resilience Index and BCP Levels of Buildings: AIJ Proposal

Kei Horie, Izuru Takewaki, Takayuki Hayashi, Kazuaki Torisawa, and Masayuki Kohiyama

The 17th World Conference on Earthquake Engineering (17WCEE) (Sendai) ,

2021.09

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2021.10
,
Poster presentation, Japan Association for Earthquake Engineering
Evaluation of Torsional Response of Super High-Rise Buildings Induced by Q–Δ Resonance Using Single- and Double-Layer Models

MAKI Shiori, KOHIYAMA Masayuki

Annual Meeting of Architectural Institute of Japan (Online) ,

2021.09
,
Oral presentation (general), Architectural Institute of Japan

　View Summary

日本建築学会大会学術講演梗概集（東海）
Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan
Paper No. 20019, Vol. 構造I, pp. 37-38
LQR Control Design Scheme for a Seismic Response Control Device for Improving the Resilience of a Medical Facility

KOHIYAMA Masayuki, WAKABAYASHI Kento, TAKAHASHI Kento

Annual Meeting of Architectural Institute of Japan (Online) ,

2021.09
,
Oral presentation (general), Architectural Institute of Japan

　View Summary

日本建築学会大会学術講演梗概集（東海）
Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan
Paper No. 21381, Vol. 構造II, pp. 761-762

Research Projects of Competitive Funds, etc. 【 Display / hide 】

Resilient Vibration Control Method Considering Functional Continuity and Rapid Restoration

2020.04

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2024.03

MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Principal investigator
Broadcast Responsive Vibration Control System to Reduce Damage to Facilities

2016.04

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2020.03

MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Principal investigator

Intellectual Property Rights, etc. 【 Display / hide 】

振動制御システム

Date applied： 2011-157501 2011.07

Date announced：特開2013-23844

Date issued： 5828699 2015.10

Patent, Joint
建物データポリゴン化システム、その方法および建物データポリゴン化プログラム

Date applied：特願2001-23850 2001.01

Date announced：特開2002-230589 2002.08

Date issued： 3394525 2003.01

Patent
フランジ付中間鋼板を使用した積層ゴム支承

Date applied：特許出願平9-66319 1997.03

Date announced：特許公開平10-266624 1998.10

Patent

Courses Taught 【 Display / hide 】

SPECIAL LECTURE ON SPACE AND ENVIRONMENT DESIGN ENGINEERING 1

2023
SOCIETY, ECONOMY, CULTURE, AND ENGINEERING

2023
SEMINAR IN SYSTEM DESIGN ENGINEERING

2023
PROBABILITY AND STATISTICS

2023
MATHEMATICAL PROGRAMMING FOR DESIGN AND PLANNING

2023

Courses Previously Taught 【 Display / hide 】

社会・経済・文化と工学

Keio University

2014.04

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2015.03
,
Autumn Semester
設計・計画の最適化数理

Keio University

2014.04

-

2015.03
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Autumn Semester, Lecture
空間設計製図Ｉ

Keio University

2014.04

-

2015.03
,
Autumn Semester, Seminar
理工学基礎実験

Keio University

2014.04

-

2015.03
,
Autumn Semester, Laboratory work/practical work/exercise
空間・環境デザイン工学特別講義第１

Keio University

2014.04

-

2015.03
,
Spring Semester, Lecture

Social Activities 【 Display / hide 】

国立研究開発法人防災科学技術研究所数値震動台研究開発分科会データサイエンスWG 主査

National Research Institute for Earth Science and Disaster Resilience
,
2020.08

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2023.03
国立研究開発法人防災科学技術研究所数値震動台研究開発分科会委員

National Research Institute for Earth Science and Disaster Resilience
,
2019.09

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2023.03
Lecturer of Group Training Course of Seismology and Earthquake Engineering

International Institute of Seismology and Earthquake Engineering, Building Research Institute, （Building Research Institute (Tsukuba, Ibaraki))
,
2017.02

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Present

　View Summary

Subject: Structural Response Control
国立研究開発法人防災科学技術研究所数値震動台研究開発分科会建築WG委員

National Research Institute for Earth Science and Disaster Resilience
,
2016.05

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2023.03
独立行政法人防災科学技術研究所数値震動台研究開発分科会建築WG委員

National Research Institute for Earth Science and Disaster Prevention
,
2014.04

-

2016.03

Memberships in Academic Societies 【 Display / hide 】

Architectural Institute of Japan

　
Japan Society of Civil Engineers

　
Earthquake Engineering Research Institute

　
Institute of Social Safety Science

　
Japan Association for Earthquake Engineering

Committee Experiences 【 Display / hide 】

2022.05

-

Present

Board Member, Japan Association for Earthquake Engineering
2021.05

-

2022.05

論文集編集委員会委員, Japan Association for Earthquake Engineering
2021.04

-

2023.03

荷重運営委員会信頼性工学利用小委員会委員, 日本建築学会
2021.04

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2023.03

荷重運営委員会委員, 日本建築学会
2019.10

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2021.09

企画運営委員会レジリエント建築タスクフォース委員, 日本建築学会