明挖暗埋隧道侧墙施工工艺优化分析

Optimization Analysis of Construction Method for Side Wall of Open Cut and Buried Tunnel

明挖暗埋隧道非标准段主体结构施工采用满堂支架法,分底板、侧墙及顶板3层进行浇筑。论文对原方案中侧墙施工工效进行分析后发现,满堂支架法施工存在耗时长、工序多、空间受限等缺陷,对后置工序造成了较大的延误。为保证总进度计划顺利完成并控制基坑降水运营成本,对侧墙施工工艺进行了优化,并在现场进行了应用。优化后的方案可缩短一定的工期,同时对总体成本控制也起到了良好的作用。

The non-standard main structure construction of the open cut and buried tunnel adopts full bracket method,which is divided into three layers of the bottom plate,the side wall and the top plate for pouring.Based on the analysis of the construction efficiency of the side wall in the original scheme,it is found that the full bracket method has the disadvantages of long construction time,many working procedures and limited space,which causes great delay to the post working procedure.In order to ensure the smooth completion of the overall schedule and control the operation cost of foundation pit dewatering,the construction technology of the side wall is optimized and applied in the field.The optimized scheme can save the construction period.At the same time,it also plays a good role in the overall cost control.