山区河流过水钢栈桥设计与施工技术

Design and Construction Technology of Steel Trestle in Mountainous River

本项目成功研究了一种适应山区河流瞬时水位高涨幅及巨大冲击力情况下的过水钢栈桥,打破了搭设不漫水高位栈桥的传统思路。在确保合理使用和安全稳定性情况下降低了栈桥高度,从而节约了栈桥及钻孔平台搭设成本,弥补了高位栈桥的材料浪费及安全稳定性差的不足,高度契合了短时高水位差河流的水文条件。本项目过水栈桥设计思路为典型山区季节性河流、高涨幅水域栈桥设计提供更丰富的实践经验。

This project successfully studies a kind of steel trestle which can adapt to the situation of high rise of instantaneous water level and huge impact force in mountainous rivers,breaking the traditional idea of setting up high-level trestle without overtopping water.Under the condition of ensuring reasonable use and safety and stability,the trestle height is reduced,so as to save the construction cost of trestle and drilling platform,make up for the shortage of high trestle material waste and poor safety and stability,and it is highly suitable for the hydrological conditions of rivers with short time high water level difference.The design idea of this project provides more practical experience for the trestle design of seasonal rivers in typical mountainous areas and high rise water areas.