摘要
通过三维有限差分仿真计算,分析了排桩基坑水平变形与地表沉降、邻近电缆隧道的变形和受力影响,在此基础上研究了坑隧间距对电缆隧道的变形及安全性的影响。研究结果表明:基坑开挖后有隧道一侧地表沉降小于无隧道一侧;电缆隧道结构的纵向受力是影响结构安全的主要因素,纵向拉应力最大位置位于远离基坑侧墙脚;坑隧间距与电缆隧道安全系数呈非线性递增关系。
Based on the influence of the horizontal deformation and surface settlement,the deformation and force of the adjacent cable tunnel are analyzed,and the deformation and safety of the cable tunnel are studied.The research results show that after the excavation,the foundation pit is less than the tunnel side;the longitudinal force of the cable tunnel structure is the main factor affecting the safety of the structure,and the maximum longitudinal tensile stress is away from the wall of the foundation pit;the tunnel distance and the cable tunnel safety factor.
作者
张凯翾
周成龙
杜少华
李文江
韩现民
ZHANG Kaixuan;ZHOU Chenglong;DU Shaohua;LI Wenjiang;HAN Xianmin(College of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)
出处
《粉煤灰综合利用》
CAS
2024年第2期80-86,共7页
Fly Ash Comprehensive Utilization
基金
国家电网河北电力公司科技项目(KJ2020-003)。
关键词
排桩基坑
暗挖电缆隧道
数值模拟
力学效应
pile discharge foundation pit
concealed excavation of cable tunnel
numerical simulation
mechanical effect
