«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

41卷

期数:

2024年03期

页码:

149-158

栏目:

桥隧工程

出版日期:

2024-05-20

文章信息/Info

Title:

Response analysis of cable-stayed bridge tower under combined action of earthquake and wave

文章编号:

1673-2049(2024)03-0149-10

作者:

刘禹含,秦泗凤

(大连大学 建筑工程学院,辽宁 大连 116622)

Author(s):

LIU Yuhan, QIN Sifeng

(College of Civil Engineering and Architecture, Dalian University, Dalian 116622, Liaoning, China)

关键词:

斜拉桥桥塔;  地震力;  波浪力;  动水压力;  Pushover分析

Keywords:

cable-stayed bridge tower;  seismic force;  wave force;  hydrodynamic pressure;  Pushover analysis

分类号:

TU312.1

DOI:

10.19815/j.jace.2022.04053

文献标志码:

A

摘要:

为了研究跨海桥梁在地震与波浪联合作用下的响应规律与破坏机制,以一座斜拉桥为研究对象,选取了适用于3类不同场地的El-centro波、Taft波、天津波3条地震波,取不同的地震峰值加速度与无水、水深8 m、水深16 m和水深24 m组合成不同的工况,分别对斜拉桥进行地震和波浪联合作用下的动态时程分析和Pushover分析,并将两种方法的分析结果进行对比。结果表明:在地震与波浪联合作用下,地震加速度的峰值越大,动水压力对斜拉桥桥塔响应的相对影响越小; 水深越深,斜拉桥桥塔受到动水压力的影响越大; 在水深较浅的低海况下,地震力占主导地位; 在水深较深的高海况下,波浪力占主导地位; Pushover方法与动力时程分析的结果相一致,在对斜拉桥进行地震与波浪联合作用下的非线性响应分析时,Pushover分析方法具有较高的精度且计算更加简便,更适用于工程实际。

Abstract:

In order to study the response law and failure mechanism of the sea-crossing bridge under the action of earthquake and wave, a cable-stayed bridge was selected as the research object. Three seismic waves, namely El-centro wave, Taft wave, and Tianjin wave, were selected, which were suitable for three different types of sites. Different seismic peak accelerations were combined with anhydrous, 8 m water depth, 16 m water depth, and 24 m water depth to form different working conditions. The dynamic time-history analysis and Pushover analysis on cable-stayed bridges under combined action of earthquake and wave effects were carried out, and the analysis results of the two methods were compared. The results show that under the combined action of earthquakes and waves, the larger the peak value of seismic acceleration, the smaller the relative impact of hydrodynamic pressure on the response of cable-stayed bridge towers. The deeper the water depth, the greater the impact of hydrodynamic pressure on the tower of the cable-stayed bridge. In low sea conditions with shallow water depths, seismic forces dominate. In deep sea conditions with high water depths, wave forces dominate. The Pushover method is consistent with the results of dynamic time-history analysis. When analyzing the nonlinear response of cable-stayed bridges under the combined action of earthquakes and waves, the Pushover analysis method has high accuracy and simpler calculation, so it is more suitable for engineering practice.

参考文献/References:

[1] 张士博.斜拉桥结构在地震、波浪和海流作用下性能分析及优化设计[D].大连:大连理工大学,2018.
ZHANG Shibo.Structural performance analysis and optimization design on cable-stayed bridge subjected to earthquake,wave and current[D].Dalian:Dalian University of Technology,2018.
[2]吴安杰,杨万理,赵 雷.波流与地震共同作用下跨海斜拉桥动力反应研究[J].公路交通科技,2018,35(11):69-76.
WU Anjie,YANG Wanli,ZHAO Lei.Analysis on dynamic response of sea-crossing cable-stayed bridge under action of wave current and earthquake[J].Journal of Highway and Transportation Research and Development,2018,35(11):69-76.
[3]OZDEMIR Z,SOULI M,FAHJAN Y M.Application of nonlinear fluid-structure interaction methods to seismic analysis of anchored and unanchored tanks[J].Engineering Structures,2010,32(2):409-423.
[4]刘名名,唐国强,吕 林,等.平动与转动受迫谐振圆柱的水动力特性分析[J].振动与冲击,2017,36(11):31-40.
LIU Mingming,TANG Guoqiang,LU Lin,et al.Hydrodynamic characteristics of laminar flow over a circular cylinder having forced rotational and transverse harmonic oscillations[J].Journal of Vibration and Shock,2017,36(11):31-40.
[5]李 乔,刘 浪,杨万理.深水桥梁墩水耦合振动试验研究与数值计算[J].工程力学,2016,33(7):197-203.
LI Qiao,LIU Lang,YANG Wanli.Experimental and numerical investigation on pier-water coupling vibration of bridges in deepwater[J].Engineering Mechanics,2016,33(7):197-203.
[6]孟思博,丁 阳.地震和波浪联合作用下斜拉桥随机动力分析方法[J].振动与冲击,2020,39(17):194-202.
MENG Sibo,DING Yang.Stochastic dynamic analysis method for a cable-stayed bridge under combined actions of earthquake and waves[J].Journal of Vibration and Shock,2020,39(17):194-202.
[7]何晓宇,李宏男.地震与波浪联合作用下海洋平台动力特性分析[J].海洋工程,2007,25(3):18-25.
HE Xiaoyu,LI Hongnan.Dynamic analysis of offshore platform under seismic action and wave action[J].The Ocean Engineering,2007,25(3):18-25.
[8]李忠献,黄 健,丁 阳,等.不同地震激励下大跨度斜拉桥的地震反应分析[J].中国公路学报,2005,18(3):48-53.
LI Zhongxian,HUANG Jian,DING Yang,et al.Seismic responses of long-span cable-stayed bridges under different patterns of earthquake excitations[J].China Journal of Highway and Transport,2005,18(3):48-53.
[9]邹立华,赵人达,陈兴冲.桩-土-独塔斜拉桥相互作用地震响应分析[J].计算力学学报,2006,23(2):242-246.
ZOU Lihua,ZHAO Renda,CHEN Xingchong.Analysis of the response to earthquake of the pile-soil-single tower cable stayed bridge interaction[J].Chinese Journal of Computational Mechanics,2006,23(2):242-246.
[10]李忠献,黄 信.地震和波浪联合作用下深水桥梁的动力响应[J].土木工程学报,2012,45(11):134-140.
LI Zhongxian,HUANG Xin.Dynamic responses of bridges in deep water under combined earthquake and wave actions[J].China Civil Engineering Journal,2012,45(11):134-140.
[11]王东升,翟 桐,郭明珠.利用Push-over方法评价桥梁的抗震安全性[J].世界地震工程,2000,16(2):47-51.
WANG Dongsheng,ZHAI Tong,GUO Mingzhu.Estimated seismic vulnerability of bridges by Push-over method[J].World Earthquake Engineering,2000,16(2):47-51.
[12]CAMARA A,ASTIZ M A.Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation[J].Engineering Structures,2012,41:444-455.
[13]ABBASNIA R,TAJIK DAVOUDI A,MADDAH M M.An improved displacement-based adaptive pushover procedure based on factor modal combination rule[J].Earthquake Engineering and Engineering Vibration,2014,13(2):223-241.
[14]蔡志成.海上单桩风电机结构动力失稳研究与推覆分析[D].北京:清华大学,2018.
CAI Zhicheng.The dynamic instability and pushover analysis of offshore monopile wind turbines[D].Beijing:Tsinghua University,2018.
[15]居荣初,曾心传.弹性结构与液体的耦联振动理论[M].北京:地震出版社,1983.
JU Rongchu,ZENG Xinchuan.Coupled vibration theory of elastic structure and liquid[M].Beijing:Seismological Press,1983.
[16]黄 信.水-桥墩动力相互作用机理及深水桥梁非线性地震响应研究[D].天津:天津大学,2012.
HUANG Xin.Mechanism of water-bridge pier dynamic interaction and nonlinear seismic responses of bridges in deep water[D].Tianjin:Tianjin University,2012.
[17]邹志利.水波理论及其应用[M].北京:科学出版社,2005.
ZOU Zhili.Water wave theories and their applications[M].Beijing:Science Press,2005.
[18]朱伯龙,张琨联.建筑结构抗震设计原理[M].上海:同济大学出版社,1994.
ZHU Bolong,ZHANG Kunlian.Principle of seismic design of building structures[M].Shanghai:Tongji University Press,1994.
[19]李玉龙.地震与波浪联合作用下深水桥墩动力响应分析[D].天津:天津大学,2012.
LI Yulong.Dynamic response analysis of deep-water piers subjected to earthquake and wave loadings[D].Tianjin:Tianjin University,2012.

相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2023-04-07
基金项目:国家自然科学基金项目(51878108)
通信作者:秦泗凤(1979-),女,工学博士,副教授,E-mail:qsifeng@163.com。

常用功能

更新日期/Last Update: 2024-05-20