A 3D sliced-soil-beam model for settlement prediction of tunnelling using the pipe roofing method in soft ground

作     者：Yu DIAO Yiming XUE Weiqiang PAN Gang ZHENG Ying ZHANG Dawei ZHANG Haizuo ZHOU Tianqi ZHANG Yu DIAO;Yiming XUE;Weiqiang PAN;Gang ZHENG;Ying ZHANG;Dawei ZHANG;Haizuo ZHOU;Tianqi ZHANG

作者机构：Key Laboratory of Coastal Civil Engineering Structure and Safety of Ministry of EducationTianjin UniversityTianjin 300072China Department of Civil EngineeringTianjin UniversityTianjin 300072China Shanghai Tunnel Engineering Construction Co.Ltd.Shanghai 200032China Tianjin Municipal Engineering Design&Research InstituteTianjin 300392China 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2023年第17卷第12期

页      面：1934-1948页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.52178342) the Tianjin Natural Science Foundation(No.21JCZDJC00590) the Shanghai Excellent Academic/Technical Leader Program(No.20XD1432500) 

主　　题：pipe roofing method soft ground numerical simulation settlement prediction simplified calculation parametric analysis 

摘      要：The pipe roofing method is widely used in tunnel construction because it can realize a flexible section shape and a large section area of the tunnel,especially under good ground ***,the pipe roofing method has rarely been applied in soft ground,where the prediction and control of the ground settlement play important *** study proposes a sliced-soil-beam(SSB)model to predict the settlement of ground due to tunnelling using the pipe roofing method in soft *** model comprises a sliced-soil module based on the virtual work principle and a beam module based on structural *** part of this work,the Peck formula was modified for a square-section tunnel and adopted to construct a deformation mechanism of soft *** pipe roofing system was simplified to a threedimensional Winkler beam to consider the interaction between the soil and pipe *** model was verified in a case study conducted in Shanghai,China,in which it provided the efficient and accurate prediction of ***,the parameters affecting the ground settlement were *** was clarified that the stiffness of the excavated soil and the steel support are the key factors in reducing ground settlement.