Analytical solution to rock pressure acting on three shallow tunnels subjected to unsymmetrical loads  

作　　者：杨小礼 张佳华 金启云 马军秋 

机构地区：[1]School of Civil Engineering,Central South University

出　　处：《Journal of Central South University》2013年第2期528-535,共8页中南大学学报（英文版）

基　　金：Projects(2013CB036004, 2011CB013800) supported by the National Basic Research Program of China;Project(51178468, 50908234) supported by the National Natural Science Foundation of China;Project(2011G103-B) supported by the Science and Technology Development of Railway in China

摘　　要：According to the interaction of three shallow tunnels with large section, the analytical solution to rock pressure has been derived and discussed. The load model is given when the bilateral tunnels are excavated. According to the model, the stresses of three tunnels and single tunnel are calculated and compared to analyze the distribution characteristics, where the stresses are influenced by controlling factors of clear distance, covering depth and inclination angle of ground surface. The results show that, in general, the bias distribution is more serious. Therefore, it is significant to settle down the load model of three shallow tunnels so as to determine the measure of reinforcement and design the structure of support. The model and results can be used as a theoretical basis in designation and further research of the three shallow tunnels.According to the interaction of three shallow tunnels with large section, the analytical solution to rock pressure has been derived and discussed. The load model is given when the bilateral tunnels are excavated. According to the model, the stresses of three tunnels and single tunnel are calculated and compared to analyze the distribution characteristics, where the stresses are influenced by controlling factors of clear distance, covering depth and inclination angle of ground surface. The results show that, in general, the bias distribution is more serious. Therefore, it is significant to settle down the load model of three shallow tunnels so as to determine the measure of reinforcement and design the structure of support. The model and results can be used as a theoretical basis in designation and further research of the three shallow tunnels.

关 键 词：three shallow tunnels unsymmetrical loads clear distance rock pressure 

分 类 号：U451.2[建筑科学—桥梁与隧道工程] U455.4[交通运输工程—道路与铁道工程]