多层多跨预应力混凝土框架结构弹塑性静、动力分析

目前对预应力混凝土框架结构抗震能力的理解多是基于单跨预应力混凝土框架的低周反复荷载试验或振动台试验。然而,多跨预应力混凝土框架结构耗能机制和薄弱部位与单跨框架结构不尽相同。本文分别采用弹塑性动、静力分析方法(时程分析方法、Pushover分析方法)对一榀多跨部分预应力混凝土框架结构的抗震能力和屈服机制进行了分析研究,并通过对两种分析结果的比较验证了Pushover分析方法的可靠性。

Inelastic Static and Dynamic Analysis of a Multi-Span PC Frame

In the recent days, people's attitudes on seismic capacity of prestressed concrete frames are mostly based on the low reversed cyclic loading tests or shaking table tests of single-span PC frames. However, the energy dissipation mechanism and weak position of multi-span PC frames are proved to be quite different from that of the single-span ones. In this paper, inelastic dynamic analysis method (time history analysis method) and static analysis method (Pushover method) were both used to study the seismic performance of a multi-span partial PC frame. And then through comparing of results of these two procedures, the dependability and reliability of Pushover analysis method were also approved.