Analytical model of vertical load acting on jacked pipe considering soil arching effect in cohesionless soil
作者机构：Beijing Advanced Innovation Center for Future Urban DesignBeijing University of Civil Engineering and ArchitectureBeijing 102627China The Key Laboratory of Urban Security and Disaster EngineeringMinistry of EducationBeijing University of TechnologyBeijing 100024China Beijing Municipal Construction Group Co.LtdBeijing 100045China Beijing Municipal Engineering InstituteBeijing 100037China
出 版 物：《Underground Space》 (地下空间（英文）)
年 卷 期：2024年第14卷第1期
页 面：263-284页
核心收录：
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
基 金：supported by the National Key Research and Development Program of China(Grant No.2019YFC1509704) Young Teachers’Research Ability Improvement Plan of Beijing University of Civil Engineering and Architecture(Grant No.X23005) Beijing Municipal Engineering Institute
主 题：Jacked pipe Soil arching effect Theoretical model Parabolic soil arching model Vertical load
摘 要：For the project of pipe jacking in cohesionless soil,it is key to determine the vertical load on jacked pipe so as to predict the jacking force *** this paper,a new parabolic soil arching model was proposed to calculate the vertical load on jacked *** proposed analytical model was composed of parabolic soil arching zone,parabola-typed collapse zone and friction arch *** with existing literature,the key parameters(i.e.,height of parabolic soil arching,horizontal pressure coefficient and width and height of friction arch)were *** addition,considering that the trajectory of major stress is parabola,the formula of horizontal pressure coefficient was deduced in the friction *** parabolic soil arching zone is assumed as a three-hinged arch with reasonable arch axis,and the formula of load transfer was derived considering the transition effect of parabolic soil *** results of experiment,theoretical models and numerical model were adopted to verify the proposed analytical ***,the influence of the key parameters on the vertical load on jacked pipe were also discussed in *** work provides a meaningful reference for evaluating the vertical load on jacked pipe for design of pipe jacking.
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