摘要
以惠盐高速公路深圳段改扩建工程钻爆法段为工程背景,提出一种对钻爆法隧道各施工工况进行全过程模拟的地层-结构有限元计算方法,该方法可对围护结构、临时结构内力进行计算并得到各分步施工工况的计算内力,从而对其设计参数进行校核,可对钻爆法隧道施工围护结构、临时结构及超前支护参数的设计提供重要参考。经计算,本文结构设计参数满足规范要求。
Taking the drilling and blasting section of the reconstruction and expansion project of Shenzhen section of Huiyan expressway as the engineering background,a stratum structure finite element calculation method for simulating the whole process of each construction condition of drilling and blasting tunnel is proposed.This method can calculate the internal force of enclosure structure and temporary structure,and obtain the calculated internal force of each step-by-step construction condition,so as to check its design parameters,It can provide an important reference for the design of enclosure structure,temporary structure and advance support parameters of drilling and blasting tunnel construction.Through calculation,the structural design parameters in this paper meet the requirements of the code.
作者
秦睿成
QIN Ruicheng(China Railway SIYUAN Survey and Design Group Co.,Ltd Wuhan 430063)
出处
《铁道勘测与设计》
2022年第4期54-58,共5页
Railway Survey and Design
关键词
钻爆法
数值模拟
CRD
Drilling and blasting method
Numerical simulation
CRD
