桥梁施工进度控制GERT网络仿真研究

Simulation of GERT network to control progress of bridge construction

根据GERT网络特点,引入计算机仿真技术,研究了桥梁施工进度控制模拟仿真网络模型GERTS,通过网络要素的节点和活动仿真,提出了产生规定分布随机数的中值平方法、中值乘法、线性同余法,建立了GERTS计算机模拟网络模型,结合实桥钻孔桩施工网络仿真,编制了仿真网络的计算机程序并进行了模拟分析,其仿真工期都在150d上下波动,随着程序运行次数的增多,该结果越来越接近工期理论计算值150d,仿真效果符合工程实际规律,结果表明:GERT仿真网络是控制桥梁施工进度的一种有效方法。

According to the characteristics of GERT network, authors introduce the computer simulation technique and study the analog simulation network model (GERTS) of the bridge construction progress control. In this paper,through the network elements and nodal simulation, authors describe the basic principle of simulation method of GERT network model and introduce several ways to produce regulation distributed random numbers. By building of GERT network model on drilling with machinery in bridge,authors program and simulate to get a result which conforms to regularity of practical engineering.