树根桩在码头基槽开挖支护中的应用

Application of tree root pile in support for excavation of foundation trench of gravity wharf

基槽开挖是重力式码头设计与施工中的一个关键环节。随着国家基础建设事业的蓬勃发展,条件优越的岸线快速开发利用,越来越多的码头工程需要在边界条件复杂且对周边构筑物安全不利的条件下实施,如码头前沿线与后方护岸距离小,无法放坡开挖基槽等。为同时满足码头建设与后方护岸稳定性的要求,对基槽开挖时的支护方案提出更高的要求。为此,对树根桩在码头基槽开挖支护中的应用进行研究,采用复合地基理论,结合树根桩在码头基槽开挖支护中的应用结果,得出如下结论:码头基槽开挖支护采用树根桩法是合理可行的。

The excavation of foundation trench is one of the most important step of the design and construction of gravity wharf.With the vigorous development of the national infrastructure,coastlines with favorable conditions are developed and utilized rapidly,so more and more wharf engineerings have to be implemented under the complicated condition,for example,the front line of the wharf is too close to the revetment to excavate foundations with slope.To ensure the stability of revetment and satisfy the wharf construction,a higher standard is required for the support of excavation of the gravity wharf's foundation trench.This paper studies the application of tree root pile in the support of excavation of gravity wharf's foundation trench.Based on the theory of composite foundation and according to the application result of the tree root pile in the support of excavation of gravity wharf's foundation trench,the conclusion is drawn that it is feasible to adopt the tree root pile for the support of excavation of the gravity wharf's foundation trench.