[1]孙 颖,陈天海,卓卫东,等.长周期地震动作用下隔震梁桥碰撞效应研究[J].西安建筑科技大学学报：自然版,2015,47(06):858-862.[doi:10.15986/j.1006-7930.2015.06.018]
　SUN Ying,CHEN Tianhai,ZHUO Weidong,et al.Research on the collision effect of isolated girder bridges under long-period ground motion[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2015,47(06):858-862.[doi:10.15986/j.1006-7930.2015.06.018]
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长周期地震动作用下隔震梁桥碰撞效应研究()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年06期
页码:
858-862
栏目:
出版日期:
2016-01-15

文章信息/Info

Title:
Research on the collision effect of isolated girder bridges under long-period ground motion
文章编号:
1006-7930(2015)06-0858-05
作者:
孙 颖1; 陈天海1; 卓卫东1; 谷 音1; 许智星2
(1.福州大学土木工程工学院,福建 福州 350108 ;2.福建省建筑科学研究院,福建 福州 350025)
Author(s):
SUN Ying1;  CHEN Tianhai1;  ZHUO Weidong1;  GU Yin1;  XU Zhixing2
(1.Civil Engineering of Fuzhou University, Fuzhou 350108, China;2. Fujian Academy of Building Research, Fuzhou 350025, China)
关键词:
长周期地震动; 碰撞效应; 隔震梁桥; 伸缩缝刚度; 伸缩缝宽度
Keywords:
long-period ground motion;  collision effect;  isolation continuous girder bridges;  stiffness of expansion joint;  width of expansion join
分类号:
U445.7
DOI:
10.15986/j.1006-7930.2015.06.018
文献标志码:
A
摘要:
以五跨一联设置铅芯橡胶支座与摩擦摆隔震支座的隔震连续梁桥为研究对象，通过建立三维空间有限元模型，分析探讨了在近场与远场长周期地震动作用下，伸缩缝刚度及伸缩缝宽度变化对两种隔震连续梁桥梁端碰撞效应的影响．研究结果表明：无论是远场长周期地震动作用亦或是近场长周期地震动作用下，伸缩缝宽度对结构最大碰撞力及中碰撞次数均有不同程度的影响，伸缩缝宽度越宽，最大碰撞力越小且碰撞次数也随之降低；伸缩缝刚度变化仅对结构的最大碰撞力有影响；对比两种隔震结构碰撞效应分析结果可知，FPB 隔震结构的碰撞程度低于LRB 隔震结构．
Abstract:
The isolated continuous girder bridge with lead rubber bearings (LRB) or friction pendulum bearings (FPB) was taken as the research object to analyze the collision effect under near-fault or far-fault long-period ground motion. The parameters analysis including the stiffness of expansion joint and width of expansion joint have been done based on the 3D FEM. The results show that whatever the type of long-period ground motion, it has different effect of width of expansion joint on the force and times of collision, and the force and times were decreasing with the increase of width of expansion joint. The changing of stiffness of expansion joint had effect on maximum collision force only. Compared with two isolated structures, the collision effects of FPB structure were lower than LRB structure

参考文献/References:

References

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备注/Memo

备注/Memo:
收稿日期：2015-07-13修改稿日期：2015-12-15
基金项目：国家自然科学基金项目（51208112）
作者简介：孙颖（1981-），女，博士，讲师，主要研究方向为桥梁抗震与加固．E-mail：14913083@qq.com
更新日期/Last Update: 2016-01-29