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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.

本文对一个第三比例的钢筋混凝土框架-墙结构进行了动力试验，该结构具有较大的刚度偏心和强度偏心。在筑波NIED的大型振动台上同时建造了两个具有相同截面尺寸和配筋细节的试件并进行了试验。一个是裸露的钢筋混凝土结构，另一个是用聚酯纤维布加固的。未加固的柱发生剪切破坏，导致轴向承载力丧失，根据试验结果跟踪了柱的破坏过程。另一方面，加强框架不仅稳定地响应于相同的输入运动与轻微的损坏，但也幸存下来的后续输入运动的更高的水平。建立了考虑滞回退化的框架结构非线性动力分析的柱倒塌分析模型。安装不同类型的地震仪，从加速度记录中测量层间位移反应。提出了一种加速度积分的滤波方法，并通过振动台试验进行了验证。在学校建筑物中建立了密集的地震仪现场观测系统，以识别地震反应，包括土-结构相互作用和土的非弹性特性的影响。在中震作用下，通过考虑和不考虑SSI的详细框架模型分析了观测到的反应。在SSI分析的情况下观察到更好的相关性。