APPLICATION OF ROPE MEASURING TO SOIL DEFORMATION MEASUREMENT AROUND THE FOUNDATION PIT
XUE Liying1，WANG Xindong2，YANG Bin1
(1. State Key Laboratory of Building Safety and Environment，Institute of Foundation Engineering，China Academy of Building Research，Beijing 100013，China；2. Kunming Architectural Design and Research Institute Co.，Ltd.，
Kunming，Yunnan 650041，China)
Abstract：The multipoint settlement measurement equipment in the soil based on rope measuring has been developed. It is used to measure the vertical displacement of the soil，the precision of which is higher than the commonly used measuring methods. Also it can meet the measuring requirements of single-port and multipoint and successfully be used in Kunming Yinxing Jinchuan foundation pit field measurement. The equipment of measuring multipoint settlement in the soil combines with the horizontal displacement measurement of the soil，which can achieve the displacement measurement of any point in the deep soil. The linear strain and volumetric strain are analyzed according to the actual displacement measurement of the foundation pit soil. The soil unit made vertical compression and horizontal swelling and the vertical deformation is larger than the horizontal deformation，which manifests that the area of the ground surface settlement curve is larger than that of supporting structure horizontal displacement curve in the macroscopic.
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2013, Vol. 32 
