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

作　　者：Serdar KOLTUK Jie SONG Recep IYISAN Rafig AZZAM 

机构地区：[1]HPC AG,Stuttgart 70597,Germany [2]Department of Engineering Geology and Hydrogeology,RWTH Aachen University,Aachen D-52064,Germany [3]Civil Engineering Faculty,Istanbul Technical University,Istanbul 34646,Turkey

出　　处：《Frontiers of Structural and Civil Engineering》2019年第6期1415-1431,共17页结构与土木工程前沿（英文版）

摘　　要：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(Kupper)lies above a less permeable soil layer(Klower)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.

关 键 词：SEEPAGE failure by HEAVE cohesionless STRATIFIED soil model test TERZAGHI and Peck's approach FE analysis 

分 类 号：S15[农业科学—土壤学]