Open AccessStudy on the Effect of Parallel Pipe Jacking Spacing on Surface Subsidence Deformation in the Pre-Construction Method of Tube Curtain
Author(s) -
Jie Zhang,
Xinyue Zhao,
Yue Li,
Junjie Zhang,
Ren Gao
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/782/4/042021
Subject(s) - jacking , groundwater related subsidence , settlement (finance) , subsidence , geotechnical engineering , deformation (meteorology) , computer simulation , displacement (psychology) , surface (topology) , geology , engineering , structural engineering , geometry , computer science , simulation , mathematics , geomorphology , art , psychology , oceanography , structural basin , performance art , world wide web , payment , psychotherapist , art history
In view of the feasibility of the pre-construction method of the tube screen, the paper makes a comprehensive and in-depth study on the law of the ground subsidence and deformation by means of theoretical analysis, numerical simulation and engineering test. The mechanism of parallel pipe jacking distance on surface settlement and the settlement calculation formula of parallel pipe jacking are studied. By means of numerical simulation, the law of surface subsidence with different jacking intervals is analyzed, and the accuracy of simulation is verified by combining with the monitoring of surface subsidence in actual engineering. The main conclusions are as follows: (1) By studying the subsidence mechanism of parallel pipe jacking distance to the surface, the necessity of controlling the surface subsidence by controlling the pipe jacking distance is expounded; (2) By comparing and analyzing the numerical simulation results of different pipe jacking distances, the vertical displacement values of the ground under different working conditions were obtained; (3) By comparing the engineering monitoring data with the numerical simulation results, it is proved that it is feasible to control the surface settlement by adjusting the pipe jacking distance.