长周期地震波作用下复杂高层连体结构的弹塑性动力响应分析

发布时间：2018-05-28 05:20

本文选题：复杂高层连体结构 + 超限　；参考：《工程抗震与加固改造》2017年06期

【摘要】：以一实际框架(型钢混凝土柱)—核心筒(混凝土)复杂连体结构为研究对象,首先分析其结构特性,并就其连接处楼板部分进行分析,以供实际方案借鉴。根据结构特性选择若干条地震波,利用等加速度的Newmark方法进行弹塑性动力时程分析。其中对结构在两条地震波作用下的动力时程特性分别进行Hilbert-Huang变换,采用响应峰值系数量化分析,并对结构在两类地震波下的动力响应均值进行分析。通过对复杂连体结构的位移响应、受力响应等的分析对比,探讨了长周期地震波作用下复杂连体结构的动力响应特性。结果表明:该结构有充足的承载及抗震性能;结构需要考虑在长周期地震作用下的安全性;上下连接体处地震能量相对集中,需采取适当的抗震构造措施来加强连体部分的结构性能。
[Abstract]:Taking a complicated conjoined structure of steel reinforced concrete column and core tube (concrete) as the research object, the structural characteristics of the structure are analyzed firstly, and the floor part of the joint is analyzed, which can be used as a reference for the practical project. According to the characteristics of the structure, several seismic waves are selected and the elastoplastic dynamic time-history analysis is carried out by using the Newmark method of equal acceleration. The dynamic time-history characteristics of the structure under the action of two seismic waves are analyzed by Hilbert-Huang transform, and the response peak coefficients are quantitatively analyzed, and the mean value of the dynamic response of the structure under the two kinds of seismic waves is analyzed. Based on the analysis and comparison of the displacement response and the stress response of the complex connected structure, the dynamic response characteristics of the complex connected structure under the action of long-period seismic waves are discussed. The results show that the structure has sufficient bearing capacity and seismic performance, the structure needs to consider the safety under the action of long-period earthquakes, and the seismic energy at the upper and lower connectors is relatively concentrated. It is necessary to take appropriate seismic structural measures to strengthen the structural performance of the connected part.
【作者单位】：江苏大学土木工程与力学学院;中森建筑设计有限公司;
【分类号】：TU973

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