【摘要】 以西藏嘎隆拉隧道的工程建设为背景,对嘎隆拉隧道进口段进行了大型振动台模型试验方案设计。根据本次试验的目的和特性,首先介绍了振动台模型试验的模型箱设计,并对整个模型体系模拟的范围和相似关系进行了剖析。然后,在参照已有研究成果并结合本次试验拟定的相似关系基础之上,确定了模拟模型岩层和模型衬砌的材料。同时,以嘎隆拉隧道进口段数值模拟结果为基础,选择了振动台模型试验测点的布置位置。最后,结合隧址区所处的地震环境,编制了模型试验的加载制度。更多还原

【Abstract】 In this paper,based on the background of Galongla Tunnel construction,a large-scale shaking table model test program design is accomplished to the Galongla Tunnel entrance.According to the purpose and characteristics of this test,firstly,a structural design of the model box is introduced,and the scope simulated and scale relations of the model system are analyzed.The rock and lining materials of the model are identified by the scale relations of this model test and research results which have been done.At the same time,based on numerical simulation results of Galongla Tunnel entrance,the arrangement plan of sensors is selected.Finally,taking the earthquake environment of tunnel into account,a loading process of the model test is prepared.更多还原