上海交通大学学报

上海交通大学学报（自然版）

• 工程力学 • 上一篇    下一篇

爆炸冲击波作用下桥梁损伤效应的数值仿真

邓荣兵a，金先龙a,b，陈向东a，杜新光a，沈建奇a，李政a   

  1. (上海交通大学 a. 高性能计算中心， b. 振动、冲击、噪声国家重点实验室，上海 200240)
  • 收稿日期:2007-12-08 修回日期:1900-01-01 出版日期:2008-11-28 发布日期:2008-11-28
  • 通讯作者: 金先龙

Numerical Simulation for the Damage Effect of Bridge Subjected to Blast Wave

DENG Rong-bing a,JIN Xian-long a,b, CHEN Xiang-dong a,DU Xin-guang a, SHEN Jian-qi a,LI Zheng a   

  1. (a. High Performance Computing Center; b. State Key Laboratory of Vibration, Shock & Noise, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2007-12-08 Revised:1900-01-01 Online:2008-11-28 Published:2008-11-28
  • Contact: JIN Xian-long

摘要： 应用非线性动力有限元方法对爆炸冲击波作用下桥梁的损伤效应进行了三维数值模拟，得到了空中爆炸冲击波的传播规律曲线和峰值压力曲线，通过与实验公式对比，验证了爆炸荷载计算模型的有效性和计算结果的可靠性，并在此基础上研究了桥梁在爆炸载荷作用下的非线性动态响应.计算结果表明：爆炸冲击波对桥梁的损伤效应呈现局部破坏特征，桥梁迎爆面局部结构损伤较大且以破口形式存在.数值仿真结果为桥梁的抗爆承载计算和安全性评估提供了重要的参考依据.

关键词: 爆炸冲击波, 桥梁, 损伤效应, 数值仿真

Abstract: Nonlinear dynamical finite element method was applied to simulate the damage effect of bridge subjected to blast wave. Histories of blast wave propagation and overpressures were obtained. Through the comparison between the calculation results and the experimental values, the reliability of the calculation was validated. Then the dynamic responses of bridge subjected to blast wave were studied. The calculation results show that the limited areas of bridge，with large local damage in regions which are near blast，act with blast wave. The simulation results provide important reference for the calculation of blast resistant loads and evaluation of bridge safety.

中图分类号: