Abstract：Research purposes:For meeting the demands of longitudinal drainage，the subway station structure has a longitudinal grade．The longitudinal grade not only makes the civil engineering more difficult，but also makes the equipment installation and the architectural decoration more uneasy． Based on the analysis of the reason for building the longitudinal grade and the problems in the engineering practice，this paper presents the design plan of building a level grade plan to subway station structure ．
Research conclusions:Based on the contrastive analysis，the drainage plan of building a longitudinal level grade to the main structure of the station and a bidirectional herringbone drainage under the station bottom is presented． It not only can meet the demands of the station function and the requirements of the corresponding standards in China，but also can reduce the difficulties of the construction and architectural decoration，enhance the precision of the civil engineering，decrease the process of the equipment installation，avoid the treatment of the elevation difference with other interrelated engineering and lowering the additional investment compared with the conventional longitudinal grade．In consequence，it is suggested to use the level grade widely in urban rail transit．
王欢. 城市轨道交通地下车站平坡设计研究[J]. 铁道工程学报, 2012, 29(12): 100-103.
WANG Huan. Research on Designof Level Grade of Underground Station of Urban Rail Transit. 铁道工程学报, 2012, 29(12): 100-103.
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2012, Vol. 29 
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