[1]王旭,魏延建,孙得璋,等.限位墩对不等高桥墩连续梁桥地震响应的影响[J].自然灾害学报,2017,(03):071-79.[doi:10.13577/j.jnd.2017.0309]
 WANG Xu,WEI Yanjian,SUN Dezhang,et al.Influence of restrainer pier on the seismic response of continuous girder bridge with different heights of pier[J].,2017,(03):071-79.[doi:10.13577/j.jnd.2017.0309]
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限位墩对不等高桥墩连续梁桥地震响应的影响
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2017年03期
页码:
071-79
栏目:
出版日期:
2017-06-28

文章信息/Info

Title:
Influence of restrainer pier on the seismic response of continuous girder bridge with different heights of pier
作者:
王旭1 魏延建1 孙得璋2 郑铭1 刘怀林3 刘海明3
1. 重庆交通大学 土木工程学院, 重庆 400074;
2. 中国地震局工程力学研究所 中国地震局地震工程与工程振动重点实验室, 黑龙江 哈尔滨 150080;
3. 招商局重庆交通科研设计院, 重庆 400067
Author(s):
WANG Xu1 WEI Yanjian1 SUN Dezhang2 ZHENG Ming1 LIU Huailin3 LIU Haiming3
1. College of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
2. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;
3. Chongqing Research and Design Institute of Transportation, China Marchants, Chongqing 400074, China
关键词:
梁桥限位墩有限元落梁地震
Keywords:
girder bridgerestrainer pierfinite elementfall of girderearthquake
分类号:
TU399;P315.91;X43
DOI:
10.13577/j.jnd.2017.0309
摘要:
多次地震灾害调查显示,在纵桥向地震作用下,梁桥往往会发生伸缩缝的破坏、主梁的碰撞、主梁的落梁以及由主梁落梁碰撞墩柱而导致的整体性垮塌,其中主梁的落梁在地震灾害统计中占据了相当大的比例。以西部山区具有不等高桥墩的典型梁桥为研究对象,在桥梁的关键部位设置限位墩,通过有限元分析手段对桥梁的整体抗纵向地震性能进行了研究。结果表明:在连续梁桥中设置限位墩,虽然在一定程度上增大了主梁之间的碰撞,但是能够有效地减小墩梁相对位移和普通墩的墩底最大弯矩,并且在普通连续梁桥中,墩梁相对位移是随着墩高的增大而增大的,因此,应该尽可能地把限位墩设置在墩高较高的地方。同时,如果桥梁较长需要设置多个限位墩的时候,限位墩之间的间距则需要加以考虑。
Abstract:
The investigations of many earthquake disasters showed that the damages of bridge expansion joint, girder collision, fall damage to the bridge girders and the collapse of the whole bridge caused by girder collision often occurred under the action of longitudinal earthquake along the bridge direction, and the fall of girder damages occupied a large proportion in it. In this paper, the typical girder bridge with varied height piers in western mountain areas was modeled by setting up restrainer pier in the key position. The longitudinal seismic performance of bridge was studied by using finite element analysis method. It turns out that setting up the restrainer pier in continuous girder bridge increases the collision between the girders, but it could effectively reduce the relative displacement between pier and girder and the maximum bending moment at the bottom of pier of ordinary pier. The restrainer pier should be set where the pier is higher due to the relative displacement between pier and girder increases with the height of piers. Also, multiple restrainer piers should be set if the girder bridge is longer and the influence of restrainer pier spacing needs to be considered.

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备注/Memo

备注/Memo:
收稿日期:2016-05-10;改回日期:2017-01-14。
基金项目:重庆市博士后基金项目(Xm2015066);交通运输部建设科技项目(2013318800020);中央高校基本科研业务费资助项目(310821161120);山东省优秀中青年科学家科研奖励基金(2014BSE28027)
作者简介:王旭(1982-),男,副教授,博士,主要从事桥梁抗震方面的研究.E-mail:wx00012224@163.com
通讯作者:孙得璋(1982-),男,副研究员,博士,主要从事桥梁抗
更新日期/Last Update: 1900-01-01