权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

A Study of the Intensity Index of the Strong Ground Motions that Property Evaluates the Seismic Damage of Structures

物性评价结构震害的强地震动烈度指标研究

基本信息

批准号：
15560497
负责人：
MATSUMURA Kazuo
金额：
$ 1.66万
依托单位：
Kagoshima 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 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560497/
关键词：
response spectrum peak ground acceleration peak ground velocity impulse damage of structure strong motion record response of structure ductility factor 損傷多層建物

项目摘要

The seismic damage of structures depends on the characteristics of seismic motions, such as intensity and spectrum, and structural qualities, such as the natural period and the damping ratio. There was no effective intensity measure of the strong ground motions that adequately evaluates seismic damage of structures in the wide range of the natural periods.We propose the modified maximum impulse defined as the minimum value of the maximum impulse in strong ground motion and the product of the peak ground acceleration and quarter of the natural period of a structure. The relationship between several measures and the damage of single story, three stories, five stories and seven stories structures which story restoring characteristics are bilinear model is analyzed by the time history analysis using seventy three strong ground motions that are recorded in Japan, United States and Taiwan which peak ground accelerations are almost greater than 3 m/s/s. The damage measure of a structure is used the yield shear force in the first story that related to the maximum ductility factor in the all stories.The modified maximum impulse is the most effective measure that evaluates the damage of structures than other measures, such as the peak ground acceleration, the peak ground velocity, the velocity spectrum and the spectral intensity in the first natural period from 0.1 second to 1.0 second. The correlation coefficients between the modified maximum impulse and the yield shear force that is related to the ductility factor of 2.0 or 5.0 is greater than 0.8. This result shows that the modified maximum impulse is the most effective measure for the selection of intensity level of the strong motion in the time history analysis.

结构的震害取决于地震运动的特征，如烈度和谱，以及结构的质量，如自振周期和阻尼比。针对目前尚无有效的强地震动强度量度来评估结构在大范围自振周期内的震害，提出了修正的最大冲量定义为强地震动的最大冲量与结构峰值加速度与结构自振周期的四分之一的乘积的最小值。通过对日本、美国和台湾记录的73个峰值地震动几乎大于3m/S/S的强地震动的时程分析，分析了几种措施与单层、三层、五层和七层结构的损伤之间的关系。结构的损伤度量采用与所有楼层中最大延性系数相关的第一层屈服剪力。修正的最大冲量是评估结构损伤的最有效指标，而不是其他指标，如峰值地面加速度、峰值地面速度、最大地震动峰值和最大延性系数。从0.1秒到1.0秒的第一个自然周期的速度谱和谱强度。与延性系数2.0或5.0相关的修正最大冲量与屈服剪力之间的相关系数均大于0.8。这一结果表明，在时程分析中，修正的最大冲量是选择强震烈度的最有效的方法。

项目成果

期刊论文数量（16）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Study on the Distribution of the Response Spectra Normalized by the Intensity of Ground Motions

地震动强度归一化响应谱分布研究

DOI：
发表时间：
期刊：
Architectural Institute Japan Kyushu Chapter Architectural Research Meeting Vol.43.1
影响因子：
0
作者：
松村和雄;MATSUMURA Kazuo;大森睦;南直樹;OHMORI Makoto;MINAMI Naoki
通讯作者：
MINAMI Naoki

Relationship between the Damage Process due to Earthquakes and Intensity Measure of Seismic Ground Motion

地震损伤过程与地震动烈度测量的关系