(1. Research Center of Geotechnical and Structural Engineering,Shandong University,Jinan,Shandong 250061,China;2. College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;
3. No.14 Railway Bureau Chengdu-Lanzhou Railway Engineering Directorate,Songpan,Sichuan 624000,China)
Abstract:Field tests of applying the I-beam steel arch and the steel grid-concrete core tube supporting structure for tunnels in phyllite and meizoseismal area were conducted. The tunnel is a vital portion of the high speed railway from Chengdu to Lanzhou,adjacent to Songpan town of Aba plateaus,Sichuan Province,and is located in the meizoseismal area of 5•12 Wenchuan earthquake. The settlement of surrounding rock,internal displacement of surrounding rock,pressure between surrounding rock and primary support,internal force of support arch, axial force of rock bolts,pressure between primary support and secondary lining,and strain of secondary lining in two different supporting structures were all measured and analyzed using the methods of field test and numerical simulation. It was suggested that the new type support structure played a significant role to prevent and control the large deformation of surrounding rock in similar geological conditions.
徐 飞1,李术才1,石少帅1,李利平1,王渭明1,2,张 伟3,张乾青1,贺 鹏1. 千枚岩隧道传统与新型支护结构现场对比试验研究[J]. 岩石力学与工程学报, 2017, 36(3): 609-621.
XU Fei1,LI Shucai1,SHI Shaoshuai1,LI Liping1,WANG Weiming1,2,ZHANG Wei3,ZHANG Qianqing1,HE Peng1. Field test comparison of traditional and new type supporting structures in a phyllite tunnel. , 2017, 36(3): 609-621.
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