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2019年 第13卷 第6期

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《结构与土木工程前沿（英文）》 >> 2019年 第13卷 第6期 doi: 10.1007/s11709-019-0565-z

Seepage failure by heave in sheeted excavation pits constructed in stratified cohesionless soils

. HPC AG, Stuttgart 70597,Germany.. Department of Engineering Geology and Hydrogeology, RWTH Aachen University, Aachen D-52064, Germany.. Civil Engineering Faculty, Istanbul Technical University, Istanbul 34646, Turkey

录用日期： 2019-09-29 发布日期： 2019-09-29
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In this study, experimental and numerical investigations are performed to clarify the seepage failure by heave in sheeted excavation pits in stratified cohesionless soils in which a relatively permeable soil layer ( ) lies above a less permeable soil layer ( ) between excavation base and wall tip. It is shown that the evaluation of base stabilities of excavation pits against seepage failure by using Terzaghi and Peck’s approach leads to considerably lower critical potential differences than those obtained from the model tests. On the other hand, a relatively good agreement is achieved between the results of the model tests and the finite element (FE) analyses. Further investigations are performed by using axisymmetric excavation models with various dimensions and ground conditions, and a comparison between the results obtained from Terzaghi and Peck’s approach and finite element analyses is given.

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