DEFORMATION CONTROLLING CRITERION FOR EXCAVATION BASED ON BEARING CAPACITY OF ADJACENT BUILDINGS
HUANG Maosong1，2，ZHU Xiaoyu3，ZHANG Chenrong1，2
(1. Department of Geotechnical Engineering，Tongji University，Shanghai 200092，China；2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education，Tongji University，Shanghai 200092，China；3. Wuxi Architectural Design and Research Institute Co.，Ltd.，Wuxi，Jiangsu 214001，China)
Abstract：The excavation-induced soil movements will adversely affect nearby buildings and bring additional deformation. Firstly，a three-dimensional displacement control finite element method(DCFEM) is proposed to analyze the influences of excavation of foundation pits on adjacent buildings；and the rationality of the method is proved by comparing with published centrifuge model tests. Then，the environment protection criterion for excavation，i.e. new revision Technical Code for Excavation Engineering is discussed；of which the disadvantage is shown by a case study. At last，a new deformation controlling criterion for excavation based on bearing capacity of adjacent buildings is obtained with calculation by DCFEM.
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2012, Vol. 31 
