[1]卢明奇,杨庆山,李英勇.斜度对斜交桥地震作用下的扭转效应影响[J].哈尔滨工程大学学报,2012,(02):155-159.[doi:10.3969/j.issn.1006-7043.201010032]
 LU Mingqi,YANG Qingshan,LI Yingyong.Torsion effects of skew angles on skew bridges during earthquakes[J].hebgcdxxb,2012,(02):155-159.[doi:10.3969/j.issn.1006-7043.201010032]
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斜度对斜交桥地震作用下的扭转效应影响(/HTML)
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2012年02期
页码:
155-159
栏目:
出版日期:
2012-02-25

文章信息/Info

Title:
Torsion effects of skew angles on skew bridges during earthquakes
文章编号:
1006-7043(2012)02-0155-05
作者:
卢明奇 杨庆山 李英勇
1.北京交通大学 土木建筑工程学院,北京 100044; 2.山东省交通厅公路局,山东 济南 250002
Author(s):
LU Mingqi YANG Qingshan LI Yingyong
1. School of Civil Engineering,Beijing Jiaotong University, Beijing 100044,China; 2. Highway Bureau in Communications Department, Ji′nan 250002,China
关键词:
斜交桥斜度扭转相对位移碰撞地震
分类号:
U442.55
DOI:
10.3969/j.issn.1006-7043.201010032
文献标志码:
A
摘要:
为满足交通工程中线路运行的需要,桥梁斜交有时不可避免.相对于正交桥而言,斜交桥在地震作用下有扭转破坏的趋势.斜度作为斜交桥的主要特征参量,其对斜交桥在地震作用下扭转效应的影响作用,目前研究还存在彼此不同的看法.为此,以一实际工程为原型,建立了不同斜度的桥梁分析模型,利用模态分析和非线性时程分析方法对不同斜度的斜交桥梁在地震作用下的扭转效应展开研究.通过研究发现:斜度增大,斜交桥的扭转周期与平动周期之比线性增加,结构的抗扭刚度减弱,同时桥墩在地震作用下的扭矩作用也将增大.对于上部结构平面内的扭转位移,若梁体端部与桥台之间的伸缩缝宽度足够大,梁体与桥台不发生接触碰撞,增大桥梁的斜度并不能引起上部结构的扭转位移;若梁体与桥台发生接触碰撞,斜度增大,上部结构的扭转位移增大.

参考文献/References:

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相似文献/References:

[1]王军文,湛敏,邓琴,等.三跨斜交简支梁桥地震旋转机理及斜度影响研究[J].哈尔滨工程大学学报,2018,39(08):1357.[doi:10.11990/jheu.201702015]
 WANG Junwen,ZHAN Min,DENG Qin,et al.Study on earthquake rotation mechanism and skew degree influence on three-span simply supported skewed girder bridge[J].hebgcdxxb,2018,39(02):1357.[doi:10.11990/jheu.201702015]

备注/Memo

备注/Memo:
国家自然科学青年基金资助项目(51008013);山东省交通科技计划资助项目(2009Y007);中央高校基本科研业务费专项基金资助项目(2009JBM060)
更新日期/Last Update: 2012-04-06