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(1 College of Civil Engineering, Lanzhou Institute of Technology, Lanzhou 730050; 2 Track Maintenance Section of Beijing High-speed Railway, Beijing, 100071;3 National and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control,Lanzhou Jiaotong University, Lanzhou 730070; 4 Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province,Lanzhou Jiaotong University, Lanzhou 730070；5 China Railway First Survey and Design Institute Group Co.,Ltd., Xi′an 710043) |
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