钢筋混凝土梁桥船舶撞击连续倒塌数值模拟  

Numerical simulation on continuous collapse of reinforced concrete girder bridge subjected to vessel collision

作　　者：姜华[1] 王君杰[2] 贺拴海[1] 

机构地区：[1]长安大学公路学院,西安710064 [2]同济大学桥梁工程系,上海200092

出　　处：《振动与冲击》2012年第10期68-73,共6页Journal of Vibration and Shock

基　　金：中央高校基本科研业务费专项基金资助(CHD2011JC175)

摘　　要：详细介绍了钢筋混凝土桥梁船撞倒塌模拟涉及的材料模型和单元失效指标等问题,建立某连续梁上部、下部结构、支座和船舶结构精细有限元模型,将弹塑性损伤帽盖模型用于混凝土,弹塑性随动强化模型用于钢筋,对船舶撞击钢筋混凝土连续梁引起的结构连续倒塌过程进行了数值模拟,揭示了连续梁桥结构的船撞倒塌机理。The material model and failure index of the element in numerical simulation concrete bridge under vessel collision were introduced, and then the delicate finite of the collapse of reinforced element models for bridge superstructure, substructure and support saddle were set up, where the elastoplastic damage cap model was used for concrete and the elastoplastic kinematic hardening model was used for steel bar. The numerical simulation of the collapse process of bridge structure caused by vessel collision was carried out and the collapse mechanism of continuous girder bridge was revealed.

关 键 词：弹塑性损伤帽盖模型 船舶撞击 钢筋混凝土连续梁 结构倒塌 数值模拟 

分 类 号：U447[建筑科学—桥梁与隧道工程]