(天津城市建设学院，天津市软土特性与工程环境重点实验室，天津 300384)

［摘要］以天津某交通枢纽工程为例，通过基坑开挖过程中水平支撑结构板内力、围护结构及墙后土体水平位移实测资料分析，得出了逆作法异于顺作法的变化规律，由分析结果可知逆作法位移小的特点，为类似工程提供参考。

［关键词］深基坑；逆作法；监测分析

Monitoring analysis on a huge deep excavation engineering with up-down construction

Zhang Jianxin, Niu Lei(Tianjin Institute of Urban Construction, Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment，Tianjin 300384，China)

Abstract:It takes the traffic terminal of Tianjin for example, through analysis of the actual measurement data on the slab stress of the structural lateral bracing and the horizontal displacement of the space enclosing structure and the soil body behind the wall during the excavation,the different changing discipline between up-down construction and normal construction is concluded. It is shown that the up-down construction can cause little displacement and stress. It also provide reference for the up-down construction considering some kinds of factors.

Keywords:deep excavation; up-down construction; monitoring analysis

*天津高校“双五”科技计划项目(2009-SW0010)。

作者简介：张建新，博士，教授，Email：Zh_jianxin@126.com。

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