压力隧洞钢筋混凝土衬砌水-力相互作用分析
Analysis of Water Force Interaction in Reinforced Concrete Lining of Pressure Tunnel
代超1
作者信息
- 1. 中铁十八局集团第三工程有限公司,河北保定 072750
- 折叠
摘要
在高内部水压力下,混凝土衬砌压力隧道需要铺设钢筋承受破坏.由于水流是通过衬砌到达岩体,需要合理的布置钢筋以最大限度地减少隧道的水量损失.本文利用开发的子程序以评估内部水压力对多孔介质渗透系数变化的影响,分析了衬砌中的钢筋分布对隧道水量损失的影响.为了验证所提出的模型,根据介质的弹性特性对数值解和解析解进行了比较,得到了比较一致的结果.在相同的配筋率下,小直径和小间距的钢筋布置方式的钢筋混凝土衬砌隧道水量损失较小.
Abstract
Under high internal water pressure,concrete lined pressure tunnels need to be reinforced to with-stand damage.As the water flows to the rock mass through the lining,it is necessary to arrange the reinforcement reasonably to minimize the water loss of the tunnel.The subprogram developed in this paper is used to evaluate the influence of internal water pressure on the change of permeability coefficient of porous media,and the influ-ence of reinforcement distribution in lining on water loss of tunnel is analyzed.In order to verify the proposed model,the numerical solution and the analytical solution are compared according to the elastic properties of the medium,and the results are relatively consistent.Under the same reinforcement ratio,the water loss of rein-forced concrete lining tunnel with small diameter and small spacing reinforcement arrangement is smaller.
关键词
压力隧道/钢筋混凝土衬砌/耦合/有限元模型Key words
pressure tunnel/reinforced concrete lining/coupling/finite element model引用本文复制引用
出版年
2024
NETL
NSTL
万方数据