山区河床深基坑咬合桩施工工法要点——以国道109高速公路深基坑支护工程为例  

Main Points on Construction Method of Bite Piles for Deep Foundation Pitsin Mountainous Riverbeds: Taking the Deep Foundation Pit SupportProject of National Highway 109 as an Example

作　　者：袁建胜 YUAN Jiansheng(China railway engineering equipment group co.ltd.,Zhengzhou 450000,China)

机构地区：[1]中铁工程装备集团技术服务有限公司,郑州450000

出　　处：《科技和产业》2024年第24期348-353,共6页Science Technology and Industry

摘　　要：传统的施工方法如围护桩、地下连续墙、钢板桩和沉井等存在一些限制和问题,如桩间隙导致阻水效果下降、地下连续墙施工成本高且周期长,以及钢板桩和沉井受地质条件制约等。为了实现山区河床深基坑支护的止水性能并加快施工进度、节约成本,咬合桩施工工艺应运而生。以国道109高速公路工程项目中安家庄特大桥上跨丰沙铁路转体桥深基坑支护为例,详细介绍了咬合桩支护结构的应用和成效。该工程项目成功应用咬合桩施工工艺,取得了良好的成果,对今后类似工程的施工具有重要的借鉴意义。Traditional construction methods such as diaphragm walls,underground continuous walls,sheet piles,and caissons have certain limitations and issues,which include reduced water resistance due to pile gaps,high cost and long construction period for underground continuous walls,and constraints on sheet piles and caissons due to geological conditions.In order to achieve effective water sealing performance in deep foundation pit support and expedite construction progress while saving costs,the bite pile construction technology has emerged.Taking the support of the deep foundation pit for the Fengsha Railway Rotating Bridge on the Anjiazhuang Super Bridge project of National Highway 109 as an example,a detailed introduction to the application and effectiveness of the bite pile support structure was provided.The bite pile construction technology was successfully applied in this project,achieving favorable results.It holds significant reference value for similar construction projects in the future.

关 键 词：咬合桩 深基坑 施工工法 山区河床 

分 类 号：TU473.14[建筑科学—结构工程]