1. 1 general contracting mode. The general contracting mode refers to that the construction unit issues a tender announcement, and after receiving the tender invitation, the general contractor surveys the construction site, checks the tender information, makes subcontracting inquiry, and finally draws up the tender documents for the general contracting project. After the bid evaluation, if the construction unit wins the bid, it will sign a general contracting mode contract with the construction unit, which is responsible for managing the whole construction process of the project and promoting the maximization of contracting profits. Based on the general contracting mode, in the process of engineering design, we can accurately grasp various elements of the procurement stage and the construction stage, improve the scientificity of design, and realize the reasonable control of engineering cost from the primary stage of engineering construction. At the same time, the general contracting mode mostly implements fixed total price. In the specific project construction process, the total contract price is less influenced and interfered by external factors, which is helpful to reduce the overall investment of the project and form full protection for the owners' rights and interests.
In addition, the division of responsibilities between the general contractor and the owner is very clear, which also plays a certain value in reducing the project cost. 1.2 project cost management. At this stage, China's project cost management has achieved a series of excellent development achievements, realizing the whole life cycle management of the whole process of project construction. The characteristics of project cost management are as follows: ① life cycle: the management from the stages of project investment decision-making, design, construction and maintenance is called life cycle management. Through the comprehensive accounting of engineering investment cost, design cost, construction cost and maintenance cost, it is helpful to control the construction cost as a whole [1]. ② Whole process cost management: manage and control the detailed cost of the whole process of project construction, including the cost management from project design to completion. ③ Total factor cost management: In the process of cost management, the adverse effects of external factors such as construction period, environmental protection and safety on the project construction cost are strictly eliminated, and the overall cost optimization is promoted. (4) In the process of project cost management, trade associations, construction units and government supervision departments should attach importance to cost management, build a scientific information communication mechanism, and realize systematic control of the total project price without harming the interests of all parties [1].
2 Shanghai North City Development Investment Co., Ltd. Project Cost Management Status
Shanghai Beicheng Development Investment Co., Ltd. was incorporated in Jing 'an District Market Supervision Administration on June 1993. The legal representative is Wu Hao, whose business scope includes investment and development, commerce, real estate development and management, and home ownership management [2].
2. 1 Project cost management requirements. From the perspective of general contracting, higher requirements are put forward for project cost management. As we all know, the general contractor is responsible for the planning, acquisition, construction and management of the project, and needs to deliver the project as scheduled within the time limit stipulated in the contract, and ensure that the project quality will not be affected, which also puts forward higher requirements for the coordination ability of the general contractor. At the same time, some costs such as engineering survey, decision-making, design, procurement, construction, etc. are difficult for the general contractor to control, which requires a lot of calculation, which also has a certain impact on its cost control effect and needs the general contractor's attention. Finally, influenced by the owner's preference, the reputation of the general contractor has become the key factor to win the favor of the owner, which fully verifies the importance of the general contractor to strengthen its own credit management.
2.2 Existing problems.
2.2. 1 The budget for equipment, materials and construction costs of the project is relatively large. In practice, many departments did not carry out the cost budget work according to the actual situation, which had a great impact on the actual situation evaluation. When the price of equipment and materials rises in the process of purchasing, it will have a great impact on the development of budget work. In addition, in many cases, people will not consider the actual situation of engineering equipment, which makes the cost budget work extremely inaccurate. From the construction point of view, the construction of many projects is extremely complicated and the construction period is long, which has a negative impact on the budget. From the perspective of long-term operation, the possibility of cost adjustment will be great, and it will also have a serious impact on the development of enterprises. When signing a contract, people will focus on fixing the total contract price. Once the contractor is found to have cost problems, Party A will refuse to pay compensation, thus changing the budget [3].
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