Technical And Economic Study On Underground Garage Floor Structure

With the acceleration of urbanization, the development and utilization ofunderground space, especially the large space and large span underground species， isgetting more and more attention. As one of the solutions, underground garage can easethe status quo of resources shortage and land scarcity. As well know, the weight andcost of underground garage floor systems occupies a large proportion in theengineering, and an underground garage floor structure is complicated. Based on theabove situation, investigation and research on the common underground garage floorstructure in this paper, and the common structure form of the underground garage floorare technical and economic research, determine the optimal design scheme of differentoperating conditions, to provide reliable basis for the design phase of the schemeselection.First of all, based on the investigation to determine the five commonly usedunderground garage floor structure, and analyzes the design characteristics andconstruction requirements. Second, to five kinds of structure forms the structuraldesign of underground garage floor. Consider conventional load and design workingcondition with the fire load.It is selection of structure deformation as control index,under different working conditions. Selected three kinds of column grid size,respectively for the underground garage floor STRAT finite element structure design.According to the result of finite element design STRAT on five kinds of structureforms the underground garage floor engineering measurement and pricing, sure aroundthe garage floor structure system of material usage project cost and other economicindicators. Finally, the comprehensive consumption of the different structure forms theunderground garage floor materials engineering cost function constructioncomprehensive technical and economic index of operation management, etc,determined underground garage floor plan comparison method. Base on AnalyticHierarchy Process, to establish evaluation index system of the underground garagefloor and structure scheme comparison model, proceeding underground garage floorstructure scheme comparison, determined under different working conditions of theoptimal structure of the underground garage floor scheme.