摘要
通过研究最新版《工程网络计划技术规程》(JGJ/T121-2015)中修正单代号搭接网络时间参数的方法,定义了搭接网络中异常值的范围及构建了对应的网络计划,揭示了其修正方法中存在的不足,并在保证网络结构和逻辑关系不变的情况下提出了修正搭接网络中异常值的新方法.首先采用分支定界法研究异常值产生的条件,揭示异常值与间隔时间的关系及修正方法的不足;然后依据影响因素分别建立研究思路并进行对比、分析和改进,提出了新的修正方法使之能够摆脱时间约束的限制;最后采用案例对新旧修正方法进行对比,观察各项指标的变化,验证新方法的科学性与合理性.
Based on the studying the method of correcting the time parameter of activityon-node networks with generalized precedence relations of latest edition of Technical Specification for Engineering Network Planning and Scheduling(JGJT 121-2015),this paper defines the range of outliers in the activity networks with generalized precedence relations and constructs the corresponding network plan,besides,this paper also reveals the shortcomings in the correction method,and finally proposes a new correction method based on the network structure and logical relationship remain unchanged.Firstly,the branch and bound method is used to study the creation conditions of outliers to reveal not only the relations between outliers and lag time but also the shortcomings of the correction method.Afterwards,the research ideas are established,compared,analyzed and improved based on the influencing factors,respectively,based on which the new research method is proposed to meet all the time-constrained.Finally,the method of case study is used to compare the old and new correction methods to verify the scientificity and rationality of the new method through observing the changes of various indicators.
作者
张延涛
苑晨丹
ZHANG Yan-tao;YUAN Chen-dan(College of Resources,Environment and Architectural Engineering,Chifeng University,Chifeng 024000,China)
出处
《数学的实践与认识》
北大核心
2020年第14期178-187,共10页
Mathematics in Practice and Theory
基金
内蒙古自治区高等学校科学技术研究项目(NJZY20195)
赤峰市自然科学科研课题(2020)
赤峰学院科研服务地方项目(CFXYFD201821)。
关键词
搭接网络
异常值
分支定界法
修正方法
时间约束
activity-on-node networks with generalized precedence relations
outliers
branch and bound method
correction method
time-constrained
