摘要
施工期随机事件和施工方法严重地影响施工能耗,研究控制能耗的施工方法和影响因素意义重大,针对此问题设计了一种基于Lyapunov动态队列控制技术的施工能耗时变分析算法。首先根据项目时限制定进度计划,在单位时间t内构建施工队列函数;其次构造施工期随机事件的影响参数bi(t),以random随机数来表示bi(t)的影响等级,并且核验各施工阶段完成质量U的合格状态,以此作为下阶段开工的判断条件;最后引入Lyapunov二次函数构造能耗、工期函数和虚拟队列,得到加权和最小化的目标函数,经过漂移后进入惩罚阶段,得到控制能耗的惩罚参数V,以此分析相关参数对能耗的影响。研究结果表明,施工队列模型在施工能耗权衡分析上具有较强的实用性,可以作为一种分析和控制施工能耗的参考方法。
Random events and construction methods during the construction period seriously affect the construction energy consumption.It is of great significance to study the construction methods and influencing factors to control the energy consumption.Aiming at this problem,a time-varying analysis algorithm of construction energy consumption based on Lyapunov dynamic queue control technology is designed.Firstly,according to the project time limit schedule,the construction queue function is constructed in unit time t;secondly,the influence parameter bi(t)of random events in the construction period is constructed,and the influence level of bi(t)is expressed by random number,and the qualified state of the completed quality U in each construction stage is verified as the judgment condition of starting in the next stage;finally,Lyapunov quadratic function is introduced to construct energy consumption.The duration function and virtual queue are used to get the weighted and minimized objective functions.After drifting,they enter the penalty stage and get the penalty parameter V to control energy consumption,so as to analyze the impact of relevant parameters on energy consumption.The research results show that the construction queue model has a strong practicability in the trade-off analysis of construction energy consumption,which can be used as a reference method to analyze and control the construction energy consumption.
作者
何威
李伟
HE Wei;LI Wei(School of Civil Engineering and Mechanics,Yanshan University,Qinhuangdao 066004,China;Hebei’s Key Laboratory of Civil Engineering in Green Construction and Intelligent Maintenance,Yanshan University,Qinhuangdao 066004,China)
出处
《土木工程与管理学报》
北大核心
2020年第5期42-50,共9页
Journal of Civil Engineering and Management
基金
河北省自然科学基金(E2016203174)。
关键词
施工队列
施工能耗
工期
施工管理
Lyapunov漂移加惩罚
construction queue
construction energy consumption
construction period
engineering management
Lyapunov drift-plus-penalty
