Seismic Vulnerability Analysis of Moment Frames Supported by Stepped Foundation

徐刚; 李爱群; 陈素芳

doi:10.13409/j.cnki.jdpme.2017.03.002

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Seismic Vulnerability Analysis of Moment Frames Supported by Stepped Foundation

更新时间：2025-12-11

- Seismic Vulnerability Analysis of Moment Frames Supported by Stepped Foundation
- Vol. 37, Issue 3, Pages: 341-347(2017)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2017.03.002
  CLC： U352.11
- Published：2017
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[1]徐刚,李爱群,陈素芳.山地掉层框架结构地震易损性分析[J].防灾减灾工程学报,2017,37(03):341-347.

徐刚, 李爱群, 陈素芳. Seismic Vulnerability Analysis of Moment Frames Supported by Stepped Foundation[J]. 2017, 37(3): 341-347.
[1]徐刚,李爱群,陈素芳.山地掉层框架结构地震易损性分析[J].防灾减灾工程学报,2017,37(03):341-347. DOI： 10.13409/j.cnki.jdpme.2017.03.002.

徐刚, 李爱群, 陈素芳. Seismic Vulnerability Analysis of Moment Frames Supported by Stepped Foundation[J]. 2017, 37(3): 341-347. DOI： 10.13409/j.cnki.jdpme.2017.03.002.

摘要

上接地柱为山地掉层结构的薄弱部位

掉层结构的破坏模式表现为上接地柱的率先破坏。对普通框架、掉层框架、带拉梁的掉层框架和采取改进措施的带拉梁掉层框架4个算例进行大震弹塑性分析和易损性分析

对比各结构的破坏模式和改进措施的效果。结果表明:与普通框架结构相比

普通掉层框架抗倒塌能力较弱

上接地楼层柱延性需求很大

大震下率先发生破坏;增设拉梁对掉层框架结构的破坏模式有一定的影响

但效果不太理想

且增设拉梁不能提高结构的抗地震倒塌能力;采取改进措施的带拉梁掉层框架结构效果非常显著

破坏模式和抗地震倒塌能力接近于普通结构。

Abstract

The typical failure of moment frames with dropped stories is caused by the failure of upper ground story columns.Four model frames were designed and numerically analyzed to evaluate their seismic performance and improvement effect.Research results indicate that the seismic collapse-resistant capacity of frame with dropped stories is weaker than that of general structure.The ductility of upper ground story columns is high for moment frames with dropped stories

which would be destroyed under rare earthquake;the addition of tensile beam has certain influence on the failure mode of moment frames with dropped stories

but not significant.The seismic collapse-resistant capacity of frame with dropped stories can not be improved by the addition of tensile beam.The effect of the failure mode and the seismic collapse-resistant capacity of moment frames with dropped stories and the improved measure are remarkable.This is closer to the common structure.

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references

坡地掉层结构上接地支座形式对框架结构抗震性能的影响分析 [J]. 韩军,李英民,唐格林,杨溥,刘立平. 土木工程学报 . 2014(S2)

山地城市掉层框架结构抗地震倒塌能力研究 [J]. 伍云天,林雪斌,李英民,韩军. 建筑结构学报 . 2014(10)

基于性能的方钢管混凝土框架结构地震易损性分析 [J]. 刘晶波,刘阳冰,闫秋实,韩强. 土木工程学报 . 2010(02)

美国基于性能的高层建筑结构抗震设计规范 [J]. 韩小雷,郑宜,季静,黄艺燕. 地震工程与工程振动 . 2008(01)

钢筋混凝土掉层框架结构抗连续性倒塌性能研究 [D]. 吴代顶. 重庆大学 2014

掉层框架结构若干抗震设计措施研究 [D]. 黄林菁. 重庆大学 2014

钢框架结构的地震易损性及概率风险分析 [D]. 王丹. 哈尔滨工业大学 2006

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