株洲湘江八桥防船撞设施设计及仿真计算分析

摘要:

本文以株洲湘江八桥为背景,结合跨江桥梁的防撞研究特点,依据桥区环境特点及大桥主通航孔桥墩防船撞要求,针对性提出释能附体防船撞方案,该方案具有设施占用航道空间少,制造和维护便利,耐波性和恶劣环境适应性佳等特点,且具有良好的经济性。基于MSC.Dytran进行有限元仿真分析,模拟船舶及桅杆在失控状态下以漂流速度撞击大桥下层慢行系统梁体的工况,计算桅杆撞击力大小,确定警示拦截方案,验证防船撞设施的设防效果,确保防船撞方案设计的可行性,为实际工程应用提供依据,最大程度保护大桥的防船撞安全。

Abstract:

Based on the eighth Zhuzhou Xiang River bridge, combing with the anti-collision characteristics of the river-crossing bridge, according to the environmental characteristics of the bridge area and the relevant anti-collision requirements, the paper put forward the release energy attached anti-collision scheme, this kind of anti-collusion facilitiesStake up less space in the channel, and easy to manufacture and maintain, in addition, it has higher seakeeping and adaptability in the rough condition and has good economy.Then based on the MSC.Dytran, finite element simulation analysis is carried out, the impact force of the ship and the mast on the bridge beam with drifting speed in the state of out of control is calculated. The analysis provides theoretical basis for warning interception scheme and verifies the effectiveness and feasibility of anti-collision facilities, which gives the bridge maximum protection against ship collision.