卵石土地区桥梁深水桩基础施工技术

摘要

本文根据西南地区大粒径卵石土地质深水桩基础施工特点，介绍了处于季节性河流上铁路桥梁桩基础施工，利用钢管桩搭设贝雷梁式栈桥、搭设施工平台、埋设大直径钢护筒、地质钻机加固桩基础及采用不同直径钻头二次钻进跟进钢护筒等施工方法，创造性的解决了卵石土地区、深水大直径桩基础施工的难题，取得了较好的经济、社会效益，加快了施工进度。%Based on the characteristics of large grain size land pebble deep water pile foundation construction in southwest China, this article introduces the seasonal river railway bridge pile foundation construction. By setting up bailey beam pier with steel pipe pile, setting up construction platform, embedding large diameter steel liners, geological drilling pile foundation reinforcement and using drills with different diameter for secondary drilling follow-up steel liners, the deep water large diameter pile foundation construction problems in land pebble region are solved. Good economic and social benefits have been achieved, and the construction progress has been accelerated.