某明挖隧道工程围护方案技术经济比较与分析  

Technical and Economic Comparison and Analysis of a Certain Open-cut Tunnel Engineering Enclosure Plan

作　　者：魏军鸿 WEI Jun-hong(The Second Engineering Company of CCCC Fourth Harbour Engineering Co.,Ltd.,Guangzhou 510220,China)

机构地区：[1]中交四航局第二工程有限公司,广州510220

出　　处：《价值工程》2023年第13期43-45,共3页Value Engineering

摘　　要：随着近年来交通流量的急剧上升,大多数既有高速公路已无法满足经济发展所带来的增长需求,影响高速公路交通效率。为了完善高速网路功能,提升交通效率,充分发挥高速公路服务城市的作用,对既有高速公路进行改造。本文以某高速公路改造项目为例,以该项目明挖隧道原投标阶段和现工可阶段围护方案为基础,分别对地下连续墙方案和咬合桩方案进行估算和经济比较分析,在基坑满足安全性要求的前提下,选择出最具经济性和实效性的基坑围护方案。With the rapid increase in traffic flow in recent years,most existing expressways are no longer able to meet the growth needs brought about by economic development,affecting the traffic efficiency of expressways.In order to improve the functions of the high-speed network,improve traffic efficiency,and fully leverage the role of highways in serving the city,existing highways have been renovated.This article takes a certain highway renovation project as an example,and based on the original bidding stage and the current feasibility study stage of the open-cut tunnel enclosure plan of the project,estimates and economically compares the underground continuous wall plan and the bite pile plan.On the premise that the foundation pit meets the safety requirements,the most economical and effective foundation pit enclosure plan is selected.

关 键 词：高速公路 明挖隧道 围护方案 技术经济性 比较分析 

分 类 号：U452.2[建筑科学—桥梁与隧道工程]