曾家岩嘉陵江大桥船撞设防标准研究及防撞方案设计  

Study on the Fortification Criteria of Vessel Collision and Scheme Design of Protection Facility for Zengjiayan Bridge

作　　者：蒋迪斌 魏思斯 JIANG Dibin;WEI Sisi(Chongqing Zengjiayan Bridge Construction Management Co.,Ltd.,Chongqing 400067;ChinaMerchants Chongqing Communications Technology Research & Design Institute Co.,Ltd.,Chongqing400067;State Key Laboratory of Bridge Engineering Structural Dynamics,Chongqing 400067)

机构地区：[1]重庆曾家岩大桥建设管理有限公司,重庆400067 [2]招商局重庆交通科研设计院有限公司,重庆400067 [3]桥梁工程结构动力学国家重点实验室,重庆400067

出　　处：《公路交通技术》2019年第3期53-59,共7页Technology of Highway and Transport

基　　金：国家重点研发计划资助项目(2017YFC0806002)

摘　　要：为判定曾家岩嘉陵江大桥所处的风险等级,以确定桥梁的设防船撞力标准,参考《重庆市三峡库区跨江桥梁船撞设计指南》,对该桥梁在目前、近期和远期的年碰撞频率和倒塌频率进行计算分析,与可接受的风险准则进行了对比,并通过建立桥梁、船舶精细化的三维有限元模型,采用动力数值模拟方法计算桥墩在不利撞击工况下的船撞力,从而确定了桥墩的船撞设防标准。同时为了避免桥墩局部损坏,降低碰撞事故中的船舶损伤,实现对桥梁和船舶的双重保护,提出了设置固定式复合材料防撞护舷的防撞方案。In order to determine the risk level and fortification criteria of Zengjiayan Jialing River Bridge,the annual frequency of collision and collapse at present,in the short term and long term was analyzed respectively according to the Guide Specification for Vessel Collision Design of River-Crossing Bridges in Three Gorges Reservoir of Chongqing City,and the results were compared to the acceptable criteria for critical bridges.By building refined 3-D finite element models for both the bridge and ship,the collision force was calculated by numerical simulation of the ship colliding against the bridge pier under the adverse impact condition.Thus,the fortification criteria for Zengjiayan Jialing River Bridge was determined.Moreover,the design scheme of composite anti-collision fender was proposed to ensure the safety of both the bridge piers and vessels.

关 键 词：船撞 风险评估 设防标准 复合材料防撞护舷 

分 类 号：U422.55[交通运输工程—道路与铁道工程]