含有最大时距的搭接网络计算方法研究  

Calculation Methods for Multi-dependency Network with Maximum Time Lags

作　　者：周梦[1] 杜志达[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《工程管理学报》2012年第4期67-71,共5页Journal of Engineering Management

摘　　要：实际工程项目中,工作之间的关系多为搭接关系,时距可能为最大时距,其计算过程也更为复杂。为了减少程序计算搭接网络时间参数和关键线路的所需时间,将网络中FTF,STS,STF,FTS这4种简单逻辑关系以及2种常见的FTF&STS和STF&FTS组合逻辑关系全部转化为FTS逻辑关系,引入虚拟时距工作的概念,将搭接网络转化为传统的衔接网络。并采用衔接网络的时间参数计算公式和最大时距的检验法则,得出转化后的衔接网络的时间参数,所得的各实工作的时间参数值和关键线路与用一般方法直接计算出的结果一致。基于这种新的算法编制计算CPM分析程序进行PERT分析时,将会缩短其计算时间,提高决策效率。There are many concurrent activities with maximum time lags practically and its calculating process is more complex.In order to reduce the calculation time,a new approach is presented.The logic relations of FTF,STS,STF,FTS,FTF＆STS,and STF＆FTS are tranformed into FTS by introducing a dummy time lag activity so that multi-dependency network is converted to traditional network.Time parameters are obtained by the equations of schedule calculations for the conventional network and check rules for the maximum time lags.Time parameters and critical paths are the same as the results by equations of schedule calculations for the traditional network.Based on the approach,computer programs are made to identify the critical path.

关 键 词：搭接网络 最大时距 虚拟时距工作 时间参数计算 

分 类 号：TU722[建筑科学—建筑技术科学]