Research On Valuation Mode Of Construction Engineering Bill Of Quantity Based On Construction Operations

There is a problem of disconnection between the current bill pricing mode and the concrete construction operation,which leads to the incomplete function of bill of quantities.Therefore,it is particularly necessary to explore a more suitable project pricing model for modern project management methods.Based on the process logic of the construction project,this paper reconstructs the current list item division system,and proposes the list item division standard and the corresponding pricing mode based on the construction operation,so as to provide a new way of thinking for the cost management.By comparing the cost management models at home and abroad,and on the basis of systematically sorting out the development context of different domestic versions of the list pricing standard in recent years,the composition and characteristics of the current list pricing system are analyzed.Believe that the current list valuation system based on output content of project cost elements,while in the aspect of tender offer has more perfect,but there are also activities such as from the practical production process,valuation and construction management,and problems,theory and practice of dividing the current listing projects need standard necessary refactoring.By introducing the concept of activity-based costing(ABC)and breaking through the traditional cost concept of "product" as the core,"activity" is taken as the object of cost accounting.Establish the connection between price formation and construction schedule,so as to facilitate the control and accounting of various costs in the construction process.At the same time,activity-based costing method can comprehensively consider the causes of indirect costs of different levels and properties of each activity and its relationship with each activity,and carry out pricing management and cost control around each construction activity.Through the structural description of all the work,complete the structural decomposition of the target work,accurately define the scope of work of a construction project,Further establish the corresponding relationship between the deliverable based decomposition structure and the construction work-based decomposition structure,and generate the list of construction project activities.In order to provide a basis for the division of construction project activities,construction costs can then be determined according to the workload of construction project activities given in the bill of quantities.The current standard for dividing the bill of quantities is changed,and it is proposed to adjust the partial and itemized bill of quantities and some measures.It is closely combined with the work breakdown structure and divided into the construction operation according to the construction technology.Such as excavation,pouring,masonry,laying,transportation,etc.By closely combining the list items with the construction process,it provides a platform and tools for the integrated control of progress/cost,expands the function of the bill of quantities pricing mode,and USES the bill of quantities to carry out the whole-process pricing management,so as to improve the efficiency and level of cost control.The bill of quantities based on construction operations continues the division of professional engineering in the current 2013 bill pricing specification.It redefines the division of project and operation object,and no longer lists items according to the method of dividing the output of the proposed building and forming a partial itemized bill of quantities.The sample list of typical construction operations such as pouring and binding is also given.The bridge between the work breakdown structure and the valuation activity is built in order to further expand the use function of the bill of quantities.In terms of valuation management,the bill of quantities is closely combined with construction activities,and the particularity of each construction project is fully taken into account,especially in projects with complicated technology and difficult construction.First,it is helpful for construction enterprises to compile the priced bill of quantities according to their own management ability,technical strength and construction plan.Second,it helps the bid invitation unit to reduce the workload of bid evaluation;Three is based on the bill of quantities of construction on the basis of the work breakdown structure,and closely linked to the project schedule,progress in the preparation of bill of quantities can reflect image,only need to check the current progress in terms of progress payment to pay,compare the list of quantities,reduce the repeated work,completion settlement and more quickly.