深水域桥梁施工贝雷梁钢栈桥结构设计研究

STRUCTURAL DESIGN AND OPTIMIZATION ANALYSIS OF BERLEY BEAM STEELTRESTLE FOR DEEP WATER BRIDGE CONSTRUCTION

文中以某大桥施工用钢栈桥为工程背景,对钢栈桥主要部位构件进行强度、刚度、稳定性验算。结果表明深水域桥梁施工贝雷梁钢栈桥的结构设计中对于贝雷梁的设计无论是抗弯承载力还是跨中挠度,汽车荷载均起决定性作用;而对于钢管的设计,其强度、刚度及稳定性都具有较大储备;同时,贝雷梁和钢管组合钢栈桥刚度及强度储备量大、稳定性好、安全性高,可作为深水域桥梁施工临时结构的优先选项。

In this paper,the strength stiffness and stability of the main parts of the steel trestle used in the construction of bridge were checked.The results showed that the main components of the steel trestle of a bridge meet the specification requirements,and have a certain safety reserve.At the same time,reasonable suggestions were put forward for the construction of the steel trestle.