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Research on the Mechanical Properties of Medium Plate Large Opening of Assembled Integral Underground Station |
LEI Chong, SUN Bo, XU Junlin, ZHANG Zhen |
China Railway Siyuan Survey and Design Group Co. Ltd, Wuhan, Hubei 430063, China |
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Abstract Research purposes:Assembled underground stations are in line with the national advocacy of vigorously developing green buildings, and have been gradually applied in recent years. Based on the assembled integral station structure system used in Nanmen station of Wuxi to Jiangyin intercity rail transit, this paper puts forward the design scheme of large opening edge structure, and analyzes the mechanical properties of the structure, to provide theoretical basis for the application of the large opening edge structure of the assembled integral station. Research conclusions:(1)It is reasonable and feasible to adopt the superposed assembly large opening edge structure scheme, which has the advantages of high assembly rate, no bracket template, fast construction, no taking up building space, and large stiffness of the opening edge structure. (2)Whether in the construction stage or in the use stage, the bearing capacity and deformation meet the requirements, the structure is safe and reliable. (3)In the construction stage, the safety redundancy of MYZAL(Y) beam and MYZAL(X) beam is relatively low, so the size of the long side of the opening and the construction load need to be controlled. (4)In the permanent use stage, the stiffness of the opening edge structure is significantly greater than that of the cast-in-place component. (5)The research results can be applied in the assembled underground stations.
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Received: 11 July 2022
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