Comparative evaluation of building responses to an adjacent braced excavation

被引:47
|
作者
Boone, SJ
Westland, J
Nusink, R
机构
[1] Golder Associates Ltd, Mississauga, ON L5N 5S3, Canada
[2] Morrison Hershfield Ltd, N York, ON M2J 1T1, Canada
关键词
building damage; excavations; cracking; angular distortion; settlement;
D O I
10.1139/cgj-36-2-210
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Construction data from a large braced excavation are evaluated in comparison to several methods of predicting the response of buildings to excavation-induced ground movements. The project included an excavation of up to about 20 m depth over 650 m long, and 20 m wide made through generally competent glacial overburden. Excavation support was achieved using a braced soldier-pile and lagging wall system. A detailed instrumentation program was undertaken by the owner to monitor contractor compliance with ground and structure movement criteria. Data from 46 structures, with damage ranging from negligible to moderate categories, are presented, with four cases presented in detail. A modified approach to estimating potential damage categorization is provided and compared to case histories. Good agreement is demonstrated between actual and estimated damage categories.
引用
收藏
页码:210 / 223
页数:14
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