施工项目资金流的逐时段逆向调节演算模型

Reverse Calculation Model Adjusted by Time for Cash Flow of Construction Project

由于施工项目资金供给量具有时变特征,针对如何确定供需平衡点问题,引入资金供给量、资金需求量、资金存储量等概念,提出一种逐时段逆向调节演算模型。根据资金系统初始状态的临界条件调整论域,从最末时段逆向推求各时段资金供给量与资金存储量,考虑施工项目的人、材、机施工计划以及施工单位的支付意愿,实现资金供给过程优化的目标,开发施工项目资金流的逆向调节演算算法。实例表明,通过本模型调节后的资金供给量峰值显著降低,峰值出现时间点可以根据决策准则提前或后移,可以实时量化对比资金需求量与资金供给量差异,研究成果能为项目资金流计划、控制、调整优化等管理决策活动提供参考依据。

The supply of capital for construction project has time-varying characteristics.To determine the supply and demand balance point,and introduce the concept of capital supply,capital demand and capital storage,a set of time-dependent reverse adjustment calculus model is proposed.According to the initial state of the capital system,the critical conditions of the domain are adjusted,and the money for supply and storage in the period are calculated from the last time to reverse.By considering the people,materials,equipment in construction project,and the willingness to pay by construction units,the reverse adjustment algorithm is developed,and the optimization of money supply process is achieved.It is shown that the peak value of the money supply is decreased obviously,and the time of peak value appearance has moved forward or backward by decision criterion.The difference between the funds demand and supply can be quantified by time.The research results can be used in the project management for capital flow plan,control,adjustment and optimization.