无覆盖层深水钢栈桥施工技术分析

Analysis on Construction Technology of Non-overlay Deepwater Steel Trestle

文章以浔江特大桥栈桥施工为背景,结合工程特殊水文地质情况,通过施工技术方案比选,确定了钢栈桥施工工艺及技术措施,成功解决了在水深、流速大、汛期水位暴涨、漂浮物多,且河床无覆盖层的陡峭或倾斜坚硬裸岩层的高位栈桥施工难题。

With the trestle construction of Xunjiang Super-large Bridge as the background,combined with special hydrogeological situation of the project,and through the construction technology program com- parison and selection, this article determined the steel trestle construction technology and technical measures ,which successfully resolved the high-level trestle construction difficulty in steep or incline hard bare rock layer under conditions of deepwater, large velocity, rapid rise of flood water level, more float- ing debris,and the rierbed without overlay.