American Society of Civil Engineers


Deformation Regularity and Simplified Calculation Method for Foundation Pit with Confined Water during Excavation and Dewatering


by Chunlin Ding, (Associate Professor, Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China. E-mail: chunlinding308@tongji.edu.cn) and Xiaohong Meng, (Engineer, Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China)
Section: Deep Excavations and Retaining Structures, pp. 9-16, (doi:  http://dx.doi.org/10.1061/41107(380)2)

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Document type: Conference Proceeding Paper
Part of: Deep and Underground Excavations
Abstract: Based on a deep foundation pit of some station in Shanghai Metro without layer 6 (stiff-soil aquiclude), a centrifuge model test was employed to study the deformation regularity of the foundation pit with confined water during excavation and dewatering. According to the test results, the simplified calculation equations for the deformation of the foundation pit with confined water during excavation and dewatering were studied by using the regression analysis theory, and the predicted results of the simplified calculation equations are identical with the test results. In the end, some valuable suggestions are proposed for the design and construction of the foundation pit with confined water.


ASCE Subject Headings:
Dewatering
Excavation
Foundations
Retaining structures
Soil deformation