Apply And Study On The Management Of Project Cost In Engineering Design Stage

Once the project investing passes through the decision-making,the design is the key point which decides construction cost of the project. According to statistics, the influence that the design stage make to construction cost can reach more than 75%. With China's "Eleventh Five-Year Plan" about " land and energy-saving " and "green" building construction strategy implementing, so a higher demand about engineering design is Proposed, that is engineering design not only to consider the project construction costs, but also to consider the life cycle cost of project. To achieve the desired investment and social benefits, strengthening the cost management of engineering design phase is particularly important.The paper summarizes the importance of the management of project cost, the status quo of the management of project cost at home and abroad, as well as the management of project cost trends in our country, propose the management pattern of life cycle cost. Based on the theory of life cycle cost, focused on analyzing various economic factors which impacts the economy of engineering design, in architecture design, including the overall planning, layout, building height-width ratio and economic height, the building height and floor level; in structural design , including the selection of structural forms, the plane components, the vertical sub-system; as well as the selection of building materials and so on. And used the above factors as evaluation index, through the application of analytic hierarchy process, value engineering method in the management of project cost in engineering design, to elect the best design plan. Combinating with examples in engineering design stage, analysis the impacting on construction costs and life-cycle costs with different design plan, through the detailed quantitative comparison about the major factors which impacts project cost, proposed relevant measures and recommendations about the management of project cost in engineering design stage. For the masses of designer to reference, so as to achieve the desired effect of the management of project cost in design stage.