公路工程进度计划可行性的仿真评估

公路工程进度管理人员在编制进度计划时，一般都根据经验增加后备机械的数量或延长工作的持续时间，即通过机械冗余或工作时间冗余来保证机械发生故障时计划仍能顺利执行．将机械发生故障视为一个随机事件，运用计算机仿真技术和网络计划技术，建立一个综合考虑各台具体机械工作效率及其可维修性的仿真模型，在有限机械投入的条件下，对进度计划的可行性进行评估．然后，通过一个算例对评估模型进行了说明．最后，基于该模型的实际使用情况，提出了几个尚待解决的问题．

Simulative Evaluation of the Schedule Feasibility of Highway Construction

When scheduling, the contractors of highway always increase the spare machines or prolong the duration of project to avoid delay. In the paper, the stoppage of machine is regarded as a random event. A model based on the simulation technology and the network schedule technology is discussed in detail. The simulation model is used to evaluate the feasibility of a schedule with limited machines. After that, it is used to evaluate a schedule in highway engineering. Finally, the improvement of the model is illustrated based on several case studies.