洪水期高栈桥抗倾覆研究

Anti-overturning Study of High Trestle in Flood Season

在跨越大江大河甚至跨海的桥梁工程建设中,搭建稳定可靠的栈桥作为施工通道可保证工程的顺利进行,但部分大江大河由于长期受水流一般冲刷作用或者过度采砂影响,桥位处往往会出现水深较大的现象,要保证洪水作用下的高栈桥抗倾覆稳定就成为了深水桥梁施工首先要面对的问题。文章从栈桥计算分析、抗倾覆加固设计、抗倾覆施工等方面,结合扶典口特大桥钢栈桥施工实例,论述了洪水期高栈桥抗倾覆技术措施。

In the construction of bridge engineering across river and even across the sea,building a stable and reliable trestle bridge as a construction passage can ensure the smooth progress of the project,however,for some rivers,due to the long-term erosion by overcrowding or excessive sand mining,there is often the deep water phenomenon at bridge places,thus,to ensure the anti-overturning stability of high trestle under the flood has become the first problem to be faced by the deep-water bridge construction.This article described in detail the anti-overturning technical measures of high trestle in flood season of our project from the aspects of trestle calculation and analysis,anti-overturning reinforcement design,and anti-overturning construction,in combination with the steel trestle bridge construction example of Fudiankou Super Large Bridge.