Design And Development Of Refined Quantity Calculation System Based On BIM Technology

With the development of 3d digital technology,BIM(Building Information Modeling)has rised rapidly both at home and abroad in building industry,provides a sound solution for the problems existing in the budget softwares in the present construction engineering.The maturity of the technological condition makes that cost control based on refinement has become a new trend.BIM is based on 3D digital technology,increase progress factor,cost factor and so on,thus can derive to 4D,5D and ND.It integrates the engineering data at various stages and even the whole life cycle of the project,can make the relevant participants significantly improve efficiency and reduce risk.This software serves as the research work on “the refined quantity calculation system based on BIM technology”.Based on the existing research,the aim of this study is to develop the Revit-based,localized prototype system in architecture engineering,with the technology of Application Programming Interface(API).At last,it will solve the key problems that the Revit model output quantity directly,in favor of the integration of the BIM-based design software and budget software.The research results of this paper mainly include the following contents:First of all,the basic system requirements of the output precision engineering based on BIM technology is introduced.This paper is descripted around the system of business process reengineering,functional requirements,quality attributes,constraints,and data correlation.And it has carried on the demand analysis from many aspects,has completed the system application requirements modeling.It has laid the theoretical foundation for system design.Second,the optimal design scheme based on Revit is given.Including overall architecture design,functional module design,database design,environmental design and interface design,etc.It has laid a forward-looking framework for the detailed design and implementation of the system.Third,this paper has integrated multiple advanced technologies to develop key functions,interfaces,databases,etc.This study has completed the integration and associated operation of new database,as well as engineering set properties,model mapping,check,practice show.The code of four core functions is written,finally realizes nearly 100 c # class,more than 20000 lines of code.At last,the sub-item attribute set of the domestic "list specification" is set up,based on the BIM model,and the code of the list item is configured.