高烈度地震区公路隧道洞口段大型振动台模型试验方案设计
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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。
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.
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.
引文
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[2]刘吉.黄草坪2#隧道地震动力响应的物理模拟试验初步研究[D].成都理工大学,2007.
[3]邵根大,骆文海,等.强地震作用下铁路隧道衬砌耐震性的研究[J].中国铁道科学,1992,13(2).
[4]Kagawa T,Minowa C,Abe.A.EDUS project(earth-quake damage to underound structures)[C]//In:Pro.Of 12 WCEE.New Zealand:[s.n.],2000.
[5]Yasuda Susumu.Large-scale shaking table tests on pilefoundations in liquefied ground[C]//In:proc of Earth-quake Engineering.New Zealand:[s.n],2000.
[6]蒋树屏.汶川地震中国道213隧道震害调查报告[R].重庆交通科研设计院,2008.
[7]高峰,石玉成,严松宏,关宝树.隧道洞口段的抗震设防长度[J].中国公路学报,2006,19(3).
[8]楼梦麟,王文剑,朱彤,马恒春.土—结构体系振动台模型试验中土层边界影响问题[J].地震工程与工程震动,2000,20(4).
[9]Woif J P.Dynamic soil-structure interaction[M].En-glewood Cliffs:Pretice-Hall,1985.
[10]杨林德,季倩倩,郑永来,杨超.软土地铁车站结构的振动台模型试验[J].现代隧道技术,2003,40(1).
[11]庄海洋.土—地下结构非线性动力相互作用及其大型振动台试验研究[D].南京工业大学,2006.
[12]左东启,等.模型试验的理论和方法[M].北京:水利水电出版社,1984.
[13]马芳平,李仲奎,罗光福.NIOS模型材料及其在地质力学相似模型试验中的应用[J].水力发电学报,2004,23(1).
[14]王戍平.破碎围岩隧道的模拟试验研究[D].浙江大学,2004.
[15]李天斌.拱坝坝肩稳定性的地质力学模拟研究[J].岩石力学与工程学报,2004,23(10).
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