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.
BURD H J,HOULSBY G T,AUGARDE C E,et al. Modelling tunneling-induced settlement of masonry buildings[J]. Geotechnical Engineering,2000,143(1):17-29.
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