Influence of Construction Procedures on Adjacent Energy Supply Pipeline due to Large Foundation Pit Excavation

Abstract

Abstract:

Abstract： In this paper, numerical simulation analyses were performed to investigate the influence of construction procedures on foundation pit itself and the surrounding environment based on the background of A1 foundation pit of Shanghai Hongyuan Prime International Cultural City. The results show that when the excavation is completed, the final values of the amount of excavation pit bottom, vertical displacement of lattice and erect columns, stress of supporting system, lateral displacement of diaphragm wall and vertical displacement of adjacent energy supply pipeline for the Scheme One (mainly using island excavation) and Scheme Two (mainly using basin excavation) under the same conditions for the excavation and supporting are similar, but the latter is slightly smaller. In Scheme Two, the degree of the value dramatic changes for the impact of large foundation pit excavation on the foundation pit itself and the surrounding environment during each working condition is gentler than the value changes in Scheme One, therefore, Scheme Two is safer.

Key words: foundation pit, excavation procedures, adjacent pipeline, three-dimensional finite element

CLC Number:

TU 473， TV 551.4

DU Jialun1，4,ZUO Zibo2,RONG Jian3,HUANG Xingchun1, 2. Influence of Construction Procedures on Adjacent Energy Supply Pipeline due to Large Foundation Pit Excavation[J]. Journal of Shanghai Jiaotong University, 2015, 49(07): 998-1004.

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