牛湾大桥船舶撞击结构安全性评估  

Structural security evaluation of Niuwan Bridge under condition of ship collision

作　　者：刘毓湘[1] 王波[1] 高敬红[1] 

机构地区：[1]重大工程灾害与控制教育部重点实验室,暨南大学力学与土木工程系,广东广州510632

出　　处：《自然灾害学报》2009年第3期65-71,共7页Journal of Natural Disasters

基　　金：重大工程灾害与控制教育部重点实验室资助

摘　　要：根据牛湾大桥的通航现状,对大桥在船舶撞击下的结构安全性进行了分析。首先分3个层次考虑了牛湾大桥船舶撞击力荷载的取值。利用Midas/Civil对牛湾大桥进行了整体建模,合理考虑了位移边界条件、桩土相互作用、预应力效应、混凝土收缩徐变及汽车荷载的组合情况,并同时根据实际水位考虑船舶撞击点。最后给出了牛湾大桥受船舶撞击情形的计算结论,并提出了相应建议,为工程实际中的船桥相撞问题提供一个比较可行的分析思路。According to present navigation situation of Niuwan Bridge, the structure security analyse of the ship collision with the bridge was done. First of all, the ship impact force which acts on the bridge is settled under 3 levels. Then the entire finite model which considers reasonabley the displacement boundary conditions, the pile-soil interaction, the prestress effect, the shrinkage and creep of concrete, the vehicle load and the actual action spot of the ship collision under different water level was built up with Midas/Civil. At last the calculation result and relative suggestions were provided. The method presented is a feasible one to analyse the actual ship collision with bridge.

关 键 词：牛湾大桥 船舶撞击 MIDAS/CIVIL 安全评估 

分 类 号：TU311[建筑科学—结构工程]