BAO Shufeng1，2，3，QIU Qingchang1，2，LUO Yan1，2，WANG Pan1，2，HUANG Junwen1，2，WANG Bingwen1，2
(1. CCCC Fourth Harbor Engineering Institute Co.，Ltd.，Guangzhou，Guangdong 510230，China；2. CCCC Key Laboratory of Environmental Protection and Safety in Foundation Engineering of Transportation，Guangzhou，Guangdong 510230，China；3. School of Civil Engineering and Transportation，South China University of Technology，Guangzhou，Guangdong 510641，China)
Abstract：In order to guide the construction of the foundation pit composed of soil and rock effectively，the related monitoring techniques were deeply studied. The failure mode of pit composed of soil and rock was qualitatively analyzed. Based on an under-construction foundation pit composed of soil and rock in the mileage section DK799+450–DK800+750 in Pearl River Delta Area，a typical cross-section was computed with three-dimensional finite element method and monitoring. After synthesis analysis of monitoring results and calculation results，it was pointed out that，based on the existed code，it should mainly monitor deformations and internal forces of guard piles and axial forces of inner bracing for foundation pit composed of soil and rock，especially for the foundation pit whose in-situ stratified rock was a little influenced by groundwater. In addition，the surrounding environment of foundation pit should be also paid some attentions according to the engineering condition.
宋建学，郑 仪，王原嵩. 基坑变形监测及预警技术[J]. 岩土工程学报，2006，28(11)：1 889-1 891.(SONG Jianxue，ZHENG Yi，WANG Yuansong. Deformation monitoring and alerting technology of foundation pits[J]. Chinese Journal of Geotechnical Engineering，2006，28(11)：1 889-1 891.(in Chinese))
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2014, Vol. 33 
