深水、裸露基岩等困难条件下重载施工栈桥设计及施工

Design and Construction of Heavy-duty Construction Trestle Bridge under Difficult Conditions Such as Deep Water and Bare Bedrock

本文结合水利口大桥施工实践,介绍重载施工栈桥的设计和施工。因栈桥处为深水,且基岩裸露,钢管桩支墩难以入岩锚固。本项目通过对钢管桩入岩方案进行研究及验算,创新了一种在裸露基层上套桩接长的技术方案,解决了裸露基岩上修建水中栈桥的难题,可供类似地质条件下栈桥的修建进行借鉴。

Combined with the construction practice of Shuilikou Bridge,this article introduces the design and construction of heavy-duty construction trestle bridge.Because the trestle bridge is in deep water and the bedrock is exposed,it is difficult for the steel pipe pile piers to be anchored into the rock.Through the research and calculation of the steel pipe piles into the rock plan,this project innovated a technical plan to extend the length of the piles on the bare base,solving the problem of building an underwater trestle bridge on bare bedrock,which can be used as a reference for the construction of trestle bridges under similar geological conditions.