基于BIM的承包商施工阶段直接成本控制框架研究

BIM-Based Direct Cost Control Framework for Contractor During Construction Phase

目前承包商的成本控制模式还比较粗放,分析成本偏差的原因时数据源不足,影响到纠偏措施的确定。为了改善成本控制的纠偏工作,提出了基于建筑信息模型(BIM)的承包商施工阶段直接成本控制框架,将BIM应用到成本控制的对比、分析、纠偏以及检查环节中,利用BIM生成成本控制基准,包括资源控制基准和分项工程控制基准,通过将实际成本数据与控制基准对比,得到资源偏差和分项工程偏差,从而使偏差分析的对象落实到具体的每个分项工程和每类资源上,为分析偏差的原因提供了足够的数据源。并利用BIM的可视化开展纠偏工作,大大提高了成本控制工作的效率和准确度。

At present,it is hard for contractors to analyze the discrete causes of cost variances and decide practical corrective measures as they use a less refined method of cost control,which is unable to provide needed data for variances analysis. Thus,this paper proposed a BIM-Based cost control framework to make improvements. BIM（building information modeling）is applied in four main steps of cost control. Firstly,the baseline of resources and subdivisional work are generated by using BIM;then the actual data are compared with the baseline to calculate cost variances and resource variances. As the analytical target is a subdivisional work or a resource in this framework,there is enough information for the variances analysis. Finally,corrective measures deciding is visualized through BIM application,which improves the efficiency and accuracy of cost control.