Experimental Study on Deformation Properties of Lining Structure of Hydraulic Tunnel
In this paper, a large-scale indoor model test with water pressure is conducted in order to investigate the stress and deformation properties of reinforced concrete lining structures with circular crosssections. After lining structure cracks, the stress and deformation of reinforcement in lining structures tend to decrease. Although the interaction force between lining structure and surrounding rock increases with the increase of water pressure, but the ratio of interaction force and water pressure decreases, which reveals that the load-bearing capacity of lining structures decreases, and surrounding rock gradually performs as the primary load-bearing body. The internal water pressure carried by lining structure is about 20％~40％ of water pressure before cracking and less than 30％ after cracking. Test results illustrate that surrounding rock and inner water seepage significantly influence the stress and deformation properties of lining structure, and inner water seepage is the main reason for the reduction of load-bearing capacity of lining structures.
Hydraulic tunnel Lining structure Surrounding rock Inner water seepage Load-bearing ratio
Shilang Xu WeiShen
School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian, 116023,Liaoning, China
国际会议
上海
英文
1320-1325
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）