[1]黄学漾,宗周红,夏坚,等.强震作用下独塔斜拉桥模型的非线性动力响应分析[J].东南大学学报(自然科学版),2015,45(2):354-359.[doi:10.3969/j.issn.1001-0505.2015.02.027]
 Huang Xueyang,Zong Zhouhong,Xia Jian,et al.Nonlinear dynamic response analysis of cable-stayed bridge with single tower under strong earthquake excitations[J].Journal of Southeast University (Natural Science Edition),2015,45(2):354-359.[doi:10.3969/j.issn.1001-0505.2015.02.027]
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强震作用下独塔斜拉桥模型的非线性动力响应分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第2期
页码:
354-359
栏目:
交通运输工程
出版日期:
2015-03-20

文章信息/Info

Title:
Nonlinear dynamic response analysis of cable-stayed bridge with single tower under strong earthquake excitations
作者:
黄学漾1宗周红2夏坚1黎雅乐2夏樟华1
1福州大学土木工程学院, 福州 350108; 2东南大学土木工程学院, 南京 210096
Author(s):
Huang Xueyang1 Zong Zhouhong2 Xia Jian1 Li Yale2 Xia Zhanghua1
1College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
2School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
独塔斜拉桥 振动台试验 地震响应 有限元模型 破坏模式
Keywords:
cable-stayed bridge with single tower shaking table test seismic response finite element model failure mode
分类号:
U448.27
DOI:
10.3969/j.issn.1001-0505.2015.02.027
摘要:
建立了基于隐式积分和显式积分的2种有限元模型,对独塔斜拉桥振动台试验中得到的地震响应特性及其破坏模式进行了模拟.然后,利用基于隐式积分的有限元模型,分析了行波效应和索塔梁耦合振动对独塔斜拉桥地震响应特性的影响.结果表明:基于隐式积分的有限元模型可以有效地模拟斜拉桥发生破坏前的地震响应特性,而基于显式积分的有限元模型则可用于模拟独塔斜拉桥在地震作用下发生破坏的全过程;由于输入地震波频谱效应以及视波速各异,行波效应对独塔斜拉桥地震响应特性的影响各不相同;在强震作用下,模型会发生索塔梁耦合振动,导致主塔的纵桥向位移响应明显增加.
Abstract:
An implicit integration finite element model and an explicit integration finite element model were established to simulate the seismic responses and failure modes of a cable-stayed bridge model with single tower in shaking table tests. Then, according to the implicit integration finite element model, the influences of the traveling wave effect and the tower-cable-girder coupling vibration on the seismic responses of the cable-stayed bridge with single tower were analyzed. The results show that the implicit integration finite element model can simulate the seismic behaviors of the cable-stayed bridge with single tower before failure. The explicit integration finite element model can predict whole the failure process of the cable-stayed bridge with single tower under strong earthquake. The influences of the traveling wave effect on the seismic responses of the cable-stayed bridge with single tower are different due to the difference of frequency spectral characteristics and wave velocities. Under strong earthquake, tower-cable-girder coupling vibration occurs, leading to the significant increase of the longitudinal displacement response of the main tower.

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备注/Memo

备注/Memo:
收稿日期: 2014-08-25.
作者简介: 黄学漾(1985—),男,博士生;宗周红(联系人),男,博士,教授,博士生导师, zongzh@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51178101, 51378112)、招商局重庆交通科研设计院有限公司桥梁工程结构动力学国家重点实验室开放基金资助项目(201401).
引用本文: 黄学漾,宗周红,夏坚,等.强震作用下独塔斜拉桥模型的非线性动力响应分析[J].东南大学学报:自然科学版,2015,45(2):354-359. [doi:10.3969/j.issn.1001-0505.2015.02.027]
更新日期/Last Update: 2015-03-20