[1]黄学漾,宗周红,黎雅乐,等.独塔斜拉桥模型地震模拟振动台台阵试验[J].东南大学学报(自然科学版),2014,44(6):1211-1217.[doi:10.3969/j.issn.1001-0505.2014.06.021]
 Huang Xueyang,Zong Zhouhong,Li Yale,et al.Shaking table test of cable-stayed bridge model with single tower[J].Journal of Southeast University (Natural Science Edition),2014,44(6):1211-1217.[doi:10.3969/j.issn.1001-0505.2014.06.021]
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独塔斜拉桥模型地震模拟振动台台阵试验()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第6期
页码:
1211-1217
栏目:
交通运输工程
出版日期:
2014-11-20

文章信息/Info

Title:
Shaking table test of cable-stayed bridge model with single tower
作者:
黄学漾1宗周红2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 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 振动台台阵试验 地震响应 多点激励 破坏模式
Keywords:
cable-stayed bridge with single tower shaking table test seismic response multi-support excitation failure mode
分类号:
U448.27
DOI:
10.3969/j.issn.1001-0505.2014.06.021
摘要:
为了研究独塔斜拉桥在强震作用下的地震响应特性,设计制作缩尺比例为1∶30的半漂浮体系独塔斜拉桥结构模型,进行不同地震动作用下多点激励的地震模拟振动台试验.研究结果表明:支座破坏是半漂浮体系独塔斜拉桥缩尺模型在强震作用下的一种主要破坏模式;与只考虑单向水平地震波的情况相比,考虑双向水平地震波同时作用对半漂浮体系独塔斜拉桥的加速度响应影响显著,而对动位移响应的影响较小;在双向水平地震波作用下,主梁跨中会发生不可忽略的竖向加速度响应,卓越周期较长的地震波对半漂浮体系独塔结合梁斜拉桥缩尺模型更具破坏性,强震下斜拉索要承受远大于初始索力的瞬时索力.
Abstract:
In order to study the seismic characteristics of cable-stayed bridge with single tower, a 1∶30 scaled model of a semi-floating composite cable-stayed bridge was designed and tested on the shaking tables under multi-support excitations with different strong earthquake waves. The results show that the bearing damage and failure is one of the main failure modes of the semi-floating composite cable-stayed bridge model under strong earthquake loading. Compared with the case only considering unidirectional horizontal seismic waves, the acceleration responses of the cable-stayed bridge model with the semi-floating system are more affected under the bidirectional horizontal earthquake excitations, but the effect on the dynamic displacement response is less. Under the bidirectional horizontal earthquake excitations, the vertical acceleration at the middle-span of the main girder cannot be ignored. The cable-stayed bridge model with the semi-floating system is more severely damaged under the earthquake waves with the longer predominant period. Meanwhile, the transient forces of the cables are far greater than the initial cable forces.

参考文献/References:

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相似文献/References:

[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.[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(6):354.[doi:10.3969/j.issn.1001-0505.2015.02.027]

备注/Memo

备注/Memo:
收稿日期: 2014-05-04.
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)、招商局重庆交科院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,黎雅乐,等.独塔斜拉桥模型地震模拟振动台台阵试验[J].东南大学学报:自然科学版,2014,44(6):1211-1217. [doi:10.3969/j.issn.1001-0505.2014.06.021]
更新日期/Last Update: 2014-11-20