软土地基复合土钉墙支护基坑监测及变形分析

The Measure and Distortion Analysis of Composite Soil Nailing Wall Shoring for Foundation Pit in Soft Soil Stratum

截水-加强型复合土钉墙支护技术以其经济、安全、变形小、施工便捷等突出优点在软土地区基坑支护中应用越来越广泛,由于淤泥质土的高含水量、高孔隙比、高压缩性和低承载力的特点,在软土地区进行基坑支护具有一定的风险性。本文以中山花园酒店基坑支护工程监测为例,就深基坑开挖施工过程中支护结构的沉降、水平位移等监测进行分析总结,并对施工中出现的局部隆起现象进行探讨,根据监测结果得出软土地区采用该支护技术是安全可靠、经济可行的结论。

With the outstanding advantages of low cost,safety,small distortion and short-date construction,the shoring for foundation pit technology of strengthen cut-off composite soil nailing wall is applied more and more extensively.There is definite risk for foundation pit shoring in soft soil stratum because of its high water-contain,high porosity rate,high compressibility and low loaded force.We take example for Zhongshan Garden drinkery measure of shoring for foundation pit to summarize the sedimentation and level displacement of shoring structure during the digging construction,then to discuss the part upheaving phenomenon. So finally we can get the measure result,that is credible in safety and low in cost to adopt the shoring technology of strengthen cut-off composite soil nailing wall in soft soil stratum.