复合土钉墙支护在复杂地形深基坑的应用研究

Application & Research of Composite Soil Nailing Wall in Deep Foundation Pit under Complicated Geological Condition

岩土支护是地下工程领域中一项具有研究价值的技术,在整个地下工程以及大开挖工程中发挥着重要作用。近些年,我国城市地上交通的压力骤增,地下交通工程及岩土勘察工程的规模不断扩大,支护结构与所服务的结构之间的相互影响也成为支护工程设计考虑的重要指标之一。以大连市重点工程南部滨海大道东端桥隧工程第二标段为例,以支护结构在此标段隧道工程中的作用、施工过程中支护结构监控测量数据以及数值分析为基础,提出了优化结构安全性的指标,对今后类似工程的设计具有较好的借鉴意义。

Being of significance and value,geotechnical supporting engineering technology plays an important role in the whole underground engineering & large scale excavation engineering. With the urgent increase of ground traffic and the constant expanding of underground traffic & geotechnical investigation projects in recent years,the interaction between supporting structure and the structure serviced by is becoming one of the most important indexes. Based on No.2 bid section of east bridge & tunnel project of Dalian South Binhai Ave.(a key project),the index of structural safety optimization is proposed according to the function of this supporting structure in the bid section,monitoring & surveying data and numerical analyisis during the construction period,which may provide references for the similar engineering in the future.