Seismic performance evaluations of the existing buildings based on the prediction of the strong ground motions caused by near-field scenario earthquakes

基于近场地震强地震动预测的既有建筑抗震性能评估

• 批准号: 18560540
• 负责人: KIKUCHI Masaru
• 金额: $ 2.41万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560540/
• 关键词: ground motion; seismic fault; asperity; seismic response analysis; ambient vibration; seismic isolation; 固有振動数; 制震

The purpose of the research is to predict the strong ground motions caused by near-field earthquakes and to evaluate the structural damages of the existing buildings in Sapporo region. The fault parameters characterizing the hypothetical close-by Sapporo earthquakes were determined from the epicenter distribution of the recorded earthquakes in the specified region and the previous researches about the geological structure. A set of ground motions were predicted by considering the variance of the specified fault parameters such as the location of asperity, fault rapture velocity and fault angle. A series of seismic response analyses were conducted using the predicted strong ground motions. Four types of building models were constructed, which were a wooden house, two of reinforced-concrete buildings and the Former Hokkaido Government Office Building as a historically important building. The weight of snow on the roof, generation of the applied building codes and foundation types (fixed or isolated) were considered for the building models. The parameters for the building models were determined so that the models can represent the lateral capacity expected as a real building and the dynamic properties obtained from the vibration observation. The influence to the buildings of the predicted strong ground motions were almost the same as the so-called Level-2 ground motions which have been used for the seismic design of the buildings in Japan. The location of the asperity provided the largest influence to the structural damages. It was difficult to evaluate the structural damage using only one type of parameter such as the peak ground acceleration. The estimated damages were also easily changeable by the lateral capacity and the dynamic properties of the building models. The procedure of the precise evaluation of the damages caused by near-field earthquake was established in the research.

本研究的目的是预测近场地震引起的强烈地面运动，并评估札幌地区现有建筑物的结构损伤。根据特定地区记录地震的震中分布和以往对地质构造的研究，确定了表征假设的近距离札幌地震的断层参数。通过考虑给定的断层参数（如粗糙体位置、断层破裂速度和断层角度）的方差，预测了一组地震动。利用预测的强地面运动进行了一系列地震反应分析。建造了四种类型的建筑模型，即一座木屋，两座混凝土建筑和作为历史重要建筑的前北海道政府办公楼。屋顶上的雪的重量，所应用的建筑规范和基础类型（固定或隔离）的生成被认为是建筑模型。确定了建筑物模型的参数，使模型能反映真实的建筑物的侧向承载力和振动观测得到的动力特性。预测的强地震动对建筑物的影响与日本建筑物抗震设计中所采用的所谓二级地震动基本相同。微凸体的位置对结构损伤的影响最大。仅用地面峰值加速度等一种参数很难对结构的损伤进行评估。模型的侧向承载力和动力特性也很容易改变损伤估计值。建立了近场地震灾害精确评估的程序。

项目成果

日本基督教団函館教会の耐震性能に関する検討

日本基督教联合教会函馆教堂抗震性能研究

• 发表时间: 2006
• 期刊: 日本建築学会北海道支部研究報告集 No. 79
• 作者: 武田裕介;菊地優;ほか2名
• 通讯作者: ほか2名

北海道の地震環境を考慮した歴史的建築物保存のための構造的検討その2.北海道庁旧本庁舎の耐震性能評価

考虑北海道地震环境的历史建筑保护结构研究第2部分：旧北海道政府办公楼的抗震性能评估

• 发表时间: 2007
• 作者: 菊地優;石井透;永井絵美
• 通讯作者: 永井絵美

Structural Study on Historically Important Buildings based on Regional Conditions of Earthquakes in Hokkaido, Part 2; Seismic Performance of The Former Hokkaido Government Office Building

基于北海道地震区域条件的历史重要建筑的结构研究，第二部分；

• 发表时间: 2007
• 作者: Masaru KIKUCHI;Toru ISHII;Emi NAGAI
• 通讯作者: Emi NAGAI

積層ゴムの大変形領域の特性を考慮した免震建物の地震時挙動(その1)

考虑层压橡胶大变形区域特征的隔震建筑地震性能（第1部分）

• 发表时间: 2006
• 期刊: 日本建築学会大会学術講演梗概集 構造II
• 作者: 菊地優;山本祥江;ほか2名
• 通讯作者: ほか2名

北海道の地震環境を考慮した歴史的建築物保存のための構造的検討その1.想定札幌直下浅発地震の地震動評価

考虑北海道地震环境的历史建筑保护结构研究第1部分：札幌正下方假想浅层地震的地震运动评估

• 发表时间: 2007
• 作者: 石井透;菊地優;永井絵美
• 通讯作者: 永井絵美