[1]武芳文,孟园英,薛成凤,等.基于性能的大跨径斜拉桥主塔概率地震风险分析[J].世界地震工程,2018,34(03):023-31.
 WU Fangwen,MENG Yuanying,XUE Chengfeng,et al.Performance-based seismic risk analysis of long-span cable-stayed bridge tower[J].,2018,34(03):023-31.
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基于性能的大跨径斜拉桥主塔概率地震风险分析
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《世界地震工程》[ISSN:/CN:]

卷:
34
期数:
2018年03期
页码:
023-31
栏目:
出版日期:
2018-11-30

文章信息/Info

Title:
Performance-based seismic risk analysis of long-span cable-stayed bridge tower
作者:
武芳文 孟园英 薛成凤 杨源源 纪全有
长安大学 公路学院, 陕西 西安 710064
Author(s):
WU Fangwen MENG Yuanying XUE Chengfeng YANG Yuanyuan JI Quanyou
School of Highway, Chang’an University, Xi’an 710064, Shanxi, China
关键词:
斜拉桥地震易损性分析地震危险性分析概率地震风险分析基于性能的抗震设计
Keywords:
cable-stayed bridgevulnerability analysisseismic hazard snalysisprobabilistic seismic risk analysisperformance-based seismic design
分类号:
U447
摘要:
地震作用下,若斜拉桥主塔发生损伤,将使整体损伤风险明显提高。因此对斜拉桥主塔进行地震易损性分析来评定主塔的抗震能力,进而评估斜拉桥主塔在设计基准期内的地震损伤风险,具有重要的工程和经济意义。本文通过SAP2000有限元分析软件对某斜拉桥主塔进行了纵横向的地震易损性及危险性分析,结合地震易损性和危险性分析推导出概率地震风险函数,进而开展了斜拉桥的概率地震风险分析。分析结果证明,在100年设计基准期内,纵桥向或横桥向地震作用下,本文斜拉桥"H"型主塔均满足E3水准抗震设防要求。
Abstract:
If the main tower that mainly bear load is damaged under the action of earthquake, the overall damage risk of cable-stayed bridge will be significantly increased. Therefore, we needed to assess the seismic resistance of the main tower through the seismic vulnerability analysis, and then assess the seismic risk of the main tower in the design reference period, which had important engineering and economic significance This paper analyzed the seismic vulnerability analysis and seismic hazard analysis of the main tower through SAP2000 finite element analysis software. Based on the analysis of seismic vulnerability analysis and seismic hazard analysis, the probability seismic risk function was deduced, and the probability seismic risk analysis of the main tower was carried out. It showed that during the 100-year design base period, the "H" type main pylon of the cable-stayed bridge meets the requirements of E3 standard seismic fortification under the effect of longitudinal or transverse earthquake.

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备注/Memo

备注/Memo:
收稿日期:2017-10-16;改回日期:2018-05-18。
基金项目:国家自然科学基金(51408040)陕西省自然科学基金项目(2017JM5110)
作者简介:武芳文(1980-),男,副教授,博士,主要从事桥梁抗震研究.E-mail:wufangwen2004@163.com
通讯作者:孟园英(1992-),女,硕士研究生,主要从事桥梁抗震研究.E-mail:mengyuanyiinggs@163.com
更新日期/Last Update: 1900-01-01