大断面小间距四孔并行矩形顶管施工过程数值模拟  

Numerical Simulation of Parallel Rectangular Pipe Jacking Construction Process with Large Section and Small Spacing

作　　者：罗明飞 朱波 魏伟 严贵芳 方向升 胡志宏 邵文哲 LUO Ming-fei;ZHU Bo;WEI Wei;YAN Gui-fang;FANG Xiang-sheng;HU Zhi-hong;SHAO Wen-zhe(Wuhan Tianchuang Construction Group Co,Ltd,Wuhan 430000,China;Wuhan Hanyang Municipal Construction Group Co,Ltd,Wuhan 430000,China)

机构地区：[1]武汉天创建设集团有限公司,武汉430000 [2]武汉市汉阳市政建设集团有限公司,武汉430000

出　　处：《建材世界》2024年第6期86-88,共3页The World of Building Materials

摘　　要：武汉某下穿通道工程采用矩形顶管机施工,具有大断面、小间距、浅覆土、上穿地铁隧道、下穿城市主干道、多条顶管平行施工等特点。通过建立数值模型,对顶管顶进合理顺序和施工参数进行了讨论,分析顶管施工对周边环境的影响。结果表明,当顶管顶进施工顺序为2、3-1、4和施工参数土仓压力为120 kPa时,周围构筑物的变形小于控制值。Rectangular pipe jacking machine is used in the construction of an underpass project in Wuhan,which has the characteristics of large section,small spacing,shallow soil cover,subway tunnel,urban main road,and multiple pipe jacking parallel construction.Through the establishment of numerical model,the rational sequence and construction parameters of pipe jacking are discussed,and the influence of pipe jacking construction on the surrounding environment is analyzed.The results show that when the construction sequence of pipe jacking is 2,3-1,4 and the construction parameter soil bin pressure is 120 kPa,the deformation of the surrounding structures is less than the control value.

关 键 词：矩形顶管 数值模拟 地铁隧道 城市主干道 顶进时序 施工参数 

分 类 号：U231[交通运输工程—道路与铁道工程] TU990.3[建筑科学—市政工程]