Study On The Cost Management Of Yangyang Expressway Construction In Guangdong Province

In recent years,China’s highway construction has developed rapidly.At the same time of huge investment,there are some problems in the process of project construction,such as excessive investment and irregular project management.Expressway construction projects have the characteristics of one-time investment,long investment cycle,large investment amount and high maintenance cost in later period.In order to achieve the four construction goals of highway construction project,such as quality,safety,construction period and cost,it is of positive practical significance and an effective cost management scheme to implement the whole process cost management on the premise of ensuring engineering quality and construction safety.At present,the cost management standards of expressway engineering in China are not uniform,and the cost data of each stage of the project are not organically related,and there are still data faults,forming an island effect;The whole process cost management of some projects pays more attention to the construction stage,not the whole process in the true sense.In order to realize the whole process cost management of expressway,this paper investigates and studies the whole process cost management system built in Guangdong Province with three-level list as the core,and analyzes and studies the whole process cost management contents,standardized design methods and processes of cost documents,and technology of realizing cost documents and data informationization in five stages of expressway project construction,including early decision-making,survey and design,bidding during implementation,construction,late completion and post-evaluation.The results show that:(1)the investment estimation stage and design stage have great influence on the total project cost;(2)The key point of cost management in construction stage is engineering change management,and construction stage is the stage with the most complex valuation,the most abundant valuation forms and the largest number of participating units in construction project cost management.(3)The three-level list system effectively establishes the cost data relationship between the early stage and the middle and late stage of the project,and provides a cost technical scheme for realizing the whole process cost management.Finally,starting from the actual case,this paper discusses in detail that the Yangyang project has successfully transformed the first-level mode of the Ministry’s bill of quantities into the third-level mode by establishing a three-level bill system consisting of bill of quantities,project list and itemized bill of quantities,and constructed the organic correspondence among highway engineering budget system,bidding and contract list system and design drawing bill of quantities system,thus realizing the unification of highway engineering quota pricing and market pricing.Thus,the following whole process cost management objectives have been achieved:(1)In terms of engineering quantity,the effective connection between design drawing engineering quantity and measurement and payment bill engineering quantity has been realized;(2)In terms of pricing system,it has realized the organic docking from budget management to bidding and contract list management to project settlement and final accounts;(3)In the aspect of project cost management and control,the relationship between engineering quantity and cost changes of highway engineering from design to construction to project settlement and final accounts of completion has been clearly displayed,thus achieving the purpose of effectively carrying out the whole process cost management of highway construction projects.The empirical study shows that the whole process cost management system with the three-level list system as the core can better solve a series of problems caused by the inconsistency of the previous and later cost pricing systems in the whole process cost management of expressway projects in China,which is beneficial to cost control.The three-level list system has better practical significance and strong operability.