地震波浪同时作用下青岛海湾大桥的动力分析  

Dynamic Analysis of Qingdao Bay Bridge under Earthquake and Wave Excitation

作　　者：张媛 李梦霞[2] 刘斌 朱梦龙[2] 阮冬华 ZHANG Yuan;LI Mengxia;LIU Bin;ZHU Menglong;RUAN Donghua(Shengli College China University of Petroleum,Dongying 257000,China;College of Pipeline and Civil Engineering,China University of Petroleum（Hua Dong）,Qingdao 266580,China;China Petroleum and Natural Gas Pipeline Bureau Engineering Co.,Ltd.,Langfang 065000,China)

机构地区：[1]中国石油大学胜利学院,山东东营257091 [2]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [3]中国石油天然气管道局工程有限公司,河北廊坊065000

出　　处：《青岛大学学报（工程技术版）》2018年第3期130-137,共8页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：国家自然科学基金委员会(NSFC)与俄罗斯基础研究基金会(RFBR)共同资助(5151101233);山东省高等学校科技计划项目(J17KB061)

摘　　要：为研究地震与波浪同时作用下桥梁的动力响应,本文以青岛海湾大桥为研究对象,采用大质量法,使用Midas civil 2012将考虑行波效应的地震波施加于大桥有限元仿真模型上;基于现有的波浪荷载理论,在Matlab中通过编程计算,得到随机波浪荷载和规则波浪荷载,并最终得到同时考虑地震和不同波浪荷载时,桥梁特定位置的位移和内力。研究结果表明,当不考虑波浪作用时,行波效应会在视波速中段区间上增加桥梁单元的内力值;当考虑波浪作用时,波浪荷载对行波效应下桥梁各个位置单元内力值和节点位移值的影响程度不同。因此,桥梁动力响应值应综合考虑行波效应、视波速大小及波浪荷载类型。该研究对桥梁和行车安全具有重要意义。In order to study the dynamic responses of bridges under earthquake and wave, Qingdao Bay Bridge was taken as the research object and the simulation model of this bridge was established in Midas civil. The seismic wave containing traveling wave effect was applied to the bridge by large mass method. Based on the current wave load theory, regular wave load and random wave load were obtained by Matlab program. Finally, the displacements and internal forces of the specified location were obtained when the earthquake and different wave loads were considered simultaneously. Results show that traveling wave effect will increase the internal forces of bridge elements in the middle interval of the apparent wave velocity, when the wave loads are ignored. Nodal displacements and element internal forces of the bridge will be influenced by the wave loads at varying degree, when the wave loads are considered. Therefore, the dynamic responses of the bridge depend on the traveling wave effect, apparent wave velocity and the type of the wave loads comprehensively. This research is of great significance to the safety of bridge and driving.

关 键 词：地震 行波效应 随机波 规则波 动力响应 

分 类 号：TB301.2[一般工业技术—材料科学与工程] U441.3[建筑科学—桥梁与隧道工程]