Revaluation of accurate ground motion distribution in Sendai area during the 1978 Miyagi-ken Oki earthquake and damage distribution

1978年宫城县隐木地震期间仙台地区精确地震动分布的重估和损害分布

• 批准号: 15560480
• 负责人: MOTOSAKA Masato
• 金额: $ 2.43万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560480/
• 关键词: 1978 Miyagi-Ken Oki Earthquake; Sendai Area; Ground Motion Distribution; Earthquake Observation; Geological Structure; Wave Propagation Analysis; Building Damage Evaluation; Seismic Retrofit supporting system; 耐震改修; 3次元波動伝播解析; 地盤環境; 強震観測; 被害分布

This research report describes the results of a 3-year research, from the fiscal year 2003 to 2005. The research aims first to make an accurate ground motion distribution in Sendai area during the 1978 Miyagi-ken Oki earthquake, which was evaluated based on the recent knowledge of the earthquake and the geological circumstances ; second, to clarify the relation between ground motion characteristics and building damage features during the earthquake ; and third, to investigate the optimal seismic design and seismic retrofit of building structures considering ground motion characteristics affected by the geological circumstances, including surface layers and the deep underground structure.In the fiscal year 2003, an earthquake observation network was constructed in order to evaluate observationally ground motion characteristics and buildings' behavior during earthquakes in different soil conditions. At the total number of 25 observation points small seismometers were installed (18 points … More thanks to the research fund of the Ministry of Infrastructure, Land and Transport). An optimal seismic design method and retrofit priority evaluation method of existing building structures were investigated.In the fiscal years 2004 and 2005, the underground model constructed based on the recent geological information was verified by means of a simulation analysis using the observation records of the 2005/08/16 Miyagi-ken Oki earthquake and other earthquakes. After discussing the difference of ground motion characteristics of the 2005 earthquake and the 1978 earthquake, the ground motion distribution in Sendai area during the 1978 earthquake was revaluated. Building damage features observed at Nagamachi, Oroshimachi, and Kamisugi areas became consistent with the evaluated ground motion characteristics. Furthermore, optimal seismic design and retrofit of building structures considering the ground motion distribution were investigated. A seismic retrofit priority evaluation system of public buildings was developed for supporting municipal government officials in charge. Less

这份研究报告描述了从2003财政年度到2005财政年度的三年研究结果。本研究的目的是：首先，根据对1978年宫城县大地震的最新认识和地质情况，对仙台地区的地震动分布进行准确的评价，其次，阐明地震时地震动特征与建筑物破坏特征之间的关系，最后，对地震时建筑物的破坏特征进行分析。第三，研究建筑结构的最佳抗震设计和抗震加固，考虑到受地质环境影响的地震动特性，包括表层和深层地下结构。在2003财政年度，摘要为了对不同土质条件下的地震动特性和建筑物在地震作用下的行为进行观测评估，建立了一个地震观测台网。在总共25个观测点上安装了小型地震仪（18个点 ...更多信息 感谢基础设施、土地和交通部的研究基金）。研究了既有建筑结构的最佳抗震设计方法和改造优先级评估方法，并在2004和2005财年，利用2005/08/16宫城县大木地震等地震的观测记录，通过模拟分析验证了根据最新地质信息构建的地下模型。在讨论了2005年地震与1978年地震地震动特征差异的基础上，重新评价了1978年地震时仙台地区的地震动分布。在长町，Oroshimachi，和上杉地区观察到的建筑物损坏的功能变得与评估的地面运动特性一致。在此基础上，研究了考虑地震动分布的建筑结构抗震优化设计和加固方法。为支援市政府主管人员，发展一套公共建筑抗震优先度评估系统。少

项目成果

Construction of decision support system considering earthquake-proof retrofit of timber building group

考虑木结构建筑群抗震改造的决策支持系统构建

• 发表时间: 2006
• 期刊: Tohoku Journal of Natural Disaster Science Vol.42
• 作者: 陳 軍;冨田秀之;源栄正人;奥津多加志;Jun CHEN;Hideyuki TOMITA
• 通讯作者: Hideyuki TOMITA

地震動のスペクトル特性を考慮した既存建築物の最適な耐震補強に関する研究

考虑地震运动频谱特征的既有建筑优化抗震加固研究

• 发表时间: 2005
• 期刊: 東北地域災害科学研究 41
• 作者: 陳 軍;冨田秀之;源栄正人;奥津多加志;Jun CHEN;Hideyuki TOMITA;Motosaka Masato;Okutsu Takashi;山本優;源栄正人;清水友香子
• 通讯作者: 清水友香子

Wave Propagation Analysis in Three-Dimension Irregular Underground Structure Using Wavelet-Based Method

基于小波方法的三维不规则地下结构波传播分析

• 发表时间: 2005
• 期刊: Tohoku Journal of Natural Disaster Science 42(掲載予定)
• 作者: 陳 軍;冨田秀之;源栄正人;奥津多加志;Jun CHEN;Hideyuki TOMITA;Motosaka Masato;Okutsu Takashi;山本優;源栄正人;清水友香子;Yukako SHIMIZU;大野晋;阿部雅史;Jun CHEN
• 通讯作者: Jun CHEN

2003年宮城県北部の地震による地震災害に関する総合的調査研究

2003年宫城县北部地震引发的地震灾害综合研究

• 发表时间: 2004
• 期刊: 第41回自然災害科学総合シンポジウム
• 作者: 陳 軍;冨田秀之;源栄正人;奥津多加志;Jun CHEN;Hideyuki TOMITA;Motosaka Masato;Okutsu Takashi;山本優;源栄正人;清水友香子;Yukako SHIMIZU;大野晋;阿部雅史;Jun CHEN;大野晋;Ohno Susumu;大野晋;源栄正人
• 通讯作者: 源栄正人

真鍋俊平, 源栄正人: "観測記録の時空間補間による地震動分布推定手法の研究"日本建築学会東北支部研究報告集. 第66号. 81-84 (2003)

真锅俊平、源正人：“利用观测记录时空插值的地震运动分布估计方法的研究”日本建筑学会东北分会研究报告第66. 81-84号（2003年）