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Su H.F.,Beijing Jiaotong University | Su H.F.,Shandong University of Science and Technology | Liu W.N.,Beijing Jiaotong University | Liu F.C.,China Railway 19th Bureau Group 2nd CO.
Applied Mechanics and Materials | Year: 2014

Confronting with the difficulties of the construction metro station in the Northeast of China, a new idea of shield method combined prefabricated method is put forward. In the paper the research status of the underground engineering precast assembly technology was analyzed and classified firstly. The method of single round interval shield combined with open-cut(or covered excavation) prefabricated sections and on the basis of shield tunnel to build single arch station is especially worth studying and promotion. Then the key prefabricate theory needing to deal with such as how to calculating the spring stiffness and so forth of the calculating model. The key technology such as joint formation, waterproof and the other of shield method combined with prefabricated method was discussed. © (2014) Trans Tech Publications, Switzerland.

Liu F.C.,China Railway 19th Bureau Group 2nd CO. | Su H.F.,Shandong University of Science and Technology | Wang Q.C.,Shandong University of Science and Technology
Applied Mechanics and Materials | Year: 2014

By the engineering background of Datong-Xian Passenger Dedicated Railway Line passing through the collapsible loess area, four representative test sections such as roadbed-bridge transition section, roadbed-culvert transition section, ordinary and special embankment section was selected. Different pile parameter and pile plane layout and subgrade filling measure has been taken according to the different test sections. At the same time, the correspondence of settlement monitoring project was carried out. After the long time monitoring, by the hyperbolic curve and logarithmic method predicting, the long-term settlement has been predicted. The monitoring results and the curve fitting shows that the settlement and the foundation treatment schemes with subgrade filling measurement meet the design requirement also provided reference and reference for other engineering. © (2014) Trans Tech Publications, Switzerland.

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