Verification of seismic performance of building using popular seismometers

使用流行的地震仪验证建筑物的抗震性能

基本信息

批准号：
12308018
负责人：
KABEYASAWA Toshimi
金额：
$ 31.49万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2003
项目状态：
已结题

项目摘要

Dynamic tests were conducted on a third scale reinforced concrete wall-frame structures with considerable stiffness and strength eccentricity in the first story. Two specimens with the same sectional dimensions and reinforcement details were constructed and tested simultaneously on the large shaking table at NIED, Tsukuba. One was a bare reinforced concrete structure, while the other was strengthened with polyester fiber sheet. The columns without strengthening failed in shear resulting in collapse associated with loss of the axial load carrying capacity, whose collapse process was traced on the basis of test results. On the other hand, the strengthened frame not only responded stably to the same input motion with minor damage but also survived still higher levels of succeeding input motions. The analytical model is presented to simulate the collapse of the columns for nonlinear dynamic frame analysis with hysteretic deterioration. Different types of seismometers were installed to measure story drift responses from accelerograms. A method of filtering for integration of acceleration was developed, which was verified from the shaking table test. Dense field observation system of seismographs has been set up in school buildings to identify the earthquake responses including the effect of soil-structure interaction with inelastic behaviour of soil. The observed response under a moderate earthquake was analysed by the detailed frame model with and without SSI. A better correlation is observed in case of the analysis with SSI.

在第三刻度的混凝土壁框结构上进行了动态测试，在第一个故事中具有相当大的刚度和强度偏心。在Tsukuba Nied的大摇桌上同时构建了两个具有相同截面和增强细节的标本和增强细节。一个是裸露的混凝土结构，而另一个则用聚酯纤维板增强。这些圆柱而没有加强的剪切失败，导致与轴向载荷承载能力损失有关的崩溃，其倒塌过程是根据测试结果追溯的。另一方面，加强的框架不仅对相同的输入运动有较小的损害响应，而且还能存活更高的后续输入运动水平。提出了分析模型，以模拟柱的崩溃，以进行非线性动态框架分析，并以滞后恶化。安装了不同类型的地震仪，以测量加速图的故事漂移响应。开发了一种过滤加速的过滤方法，该方法已通过摇台测试进行了验证。在学校建筑物中建立了地震仪的密集野外观察系统，以确定地震反应，包括土壤结构与土壤非弹性行为的影响。通过有或没有SSI的详细框架模型分析了中等地震下观察到的反应。在与SSI分析的情况下，可以观察到更好的相关性。