Study On The Performance Of Long-span Bridge Structure Collided By Ship

With the development of science and economic,the construction of Cross-sea and Cross-river bridge in China has entered a new development period. Accidents about bridge collapse and damage often occur by vessels collision.So vessels collision can not be ignored in the design of Cross-channel bridge .The paper introduces analytic calculation method,numerical calculation method and describes the collision process with the simulation and make a research on the pier damaged and collision force . Main tasks are as follows:1. Compare and sum up the existing empirical formula of ship collision.2. Checking a large number of domestic and foreign literature, An overview of dynamic constitutive model of concrete research has been done.Concrete and steel constitutive model in the ABAQUS Finite element software has been studied.Considering strain rate,the paper evaluate parameter of the concrete damage plastic constitutive relationship .3. Fengjie Yangtze River Bridge as a model ,the paper calculated dynamic response in ship collision effect from the point of material damage and analysis the impact force under different ship type,speed and impact angle and the energy conversion in the collision course.This paper also make an analysis and comparison of static and dynamic response of the key parts of the bridge and discuss the rationality of equivalent static force of ship and provided the suggestion of access of ship survivability of Cable-Stayed Bridge.4. The paper describes the damage in hollow-thin pier in Ship-bridge collision course. provide a reference on the reinforcement for the damage region.