重庆白鹤梁题刻保护工程交通廊道防撞结构设计

Design of anti-collision structure for traffic corridor of Chongqing Baiheliang inscription protection project

针对上游相邻码头船舶失控进入重庆白鹤梁题刻水下保护工程禁航区对连接岸边陈列馆与水下保护体的交通廊道构成危险的问题,进行了防撞结构的研究。采用ANSYSLS-DYNA软件建立非线性有限元模型仿真模拟船舶与防撞结构的碰撞过程,得到不同水位及碰撞角度下的船撞力、船撞能量和结构变形的时序结果,所采用的"群桩"形式的多级钢结构平台防撞设施是可靠的,最大结构应力小于钢材的抗拉强度,船撞下结构处于安全状态,最终可以拦停船舶,保护廊道安全,并且不破坏城市景观效果,与周围建筑环境协调。

The uncontrolled entry of ships from the upstream adjacent wharf into the prohibited navigation area of chongqing baiheliang inscription underwater protection project poses a danger to the traffic corridor connecting the coastal exhibition hall and the underwater protection body.In order to solve this problem,the anti-collision structure is studied.ANSYS LS-DYNA software is used to build a nonlinear finite element model to simulate the collision process between ships and anti-collision structures.The time series results of collision force,collision energy and structural deformation under different water levels and collision angles are obtained.The multi-stage steel structure platform anti-collision facilities in the form of“group piles”are reliable,and the maximum structural stress is less than the tensile strength of steel.The structure under the collision is in a safe state,which can eventually stop the ship and protect the corridor,without damaging the urban landscape effect and coordinating with the surrounding building environment.