考虑过程干扰因素的引水工程工期成本仿真优化研究

发布时间：2018-10-04 19:38

【摘要】：针对国内大量引(调)水工程建设的现状,以及建设项目受到大量影响因素的干扰使工程进度控制受到较大困扰的事实,研究过程干扰因素影响下引水工程工期成本仿真优化问题。在分析国内外线性工程进度计划编制方法研究现状的基础上,明确了线性工程进度计划编制及优化的重要性及特点,并基于线性进度计划理论,针对过程干扰因素下的工程进度计划修改、施工方案的合理优化调整、以及工期与成本的均衡优化几方面展开研究,主要内容如下:首先,针对过程干扰因素影响下的引水工程进度计划修改及优化问题,根据过程干扰因素的不确定特性,提出基于过程干扰因素的引水工程进度动态循环优化调整模型,优化思路尽可能考虑工程实际环境因素,提高了引水工程在干扰因素影响下优化进度的能力。针对具体事件干扰下的进度优化,建立模型,改善现有LSM计划约束体系,建立模型定量分析过程干扰因素下的LSM计划资源受限工期优化问题。并结合某引水工程在建设过程中的干扰因素进行仿真优化计算和分析。其次,在解决过程干扰因素下引水工程工期优化问题的基础上,以发包人角度进一步考虑工期成本优化问题,在工期成本优化的同时考虑业主奖罚机制对工期成本优化的影响。针对这一问题,建立模型定量分析工期成本均衡优化问题,其实质也就是多目标优化问题。优化模型中,明确建设项目未施工部分每个施工作业其可能的施工模式及不同模式对应的合理成本,在某作业受到干扰因素影响的情况下,利用Pareto最优前沿理论得到若干优化方案供发包人决策参考。为了更加高效地得到本文优化结果,依据建立的模型,借助Matlab编程软件编写求解程序,并结合某大型调水工程项目对过程干扰因素下的工期成本优化问题进行了仿真优化计划和分析。
[Abstract]:In view of the present situation of the construction of a large number of water diversion projects in China, and the fact that the construction project is disturbed by a large number of influential factors, the control of the project progress is greatly troubled. This paper studies the simulation optimization of the construction cost of water diversion project under the influence of process disturbance factors. On the basis of analyzing the present situation of the research on the preparation methods of the linear engineering schedule at home and abroad, the importance and characteristics of the preparation and optimization of the linear engineering schedule are clarified, and based on the theory of linear schedule planning, The main contents of this paper are as follows: firstly, the modification of the project schedule, the reasonable optimization of the construction scheme, and the optimization of the time limit and the cost under the influence of the process interference are studied. According to the uncertain characteristics of the process disturbance factors, the dynamic cycle optimization model of the water diversion project schedule based on the process interference factors is put forward in order to modify and optimize the schedule of the diversion project under the influence of the process disturbance factors, and according to the uncertain characteristics of the process interference factors, the dynamic cycle optimization model is proposed. The optimization idea takes into account the actual environmental factors as far as possible and improves the ability of water diversion engineering to optimize the schedule under the influence of interference factors. Aiming at the schedule optimization under the disturbance of specific events, this paper establishes a model, improves the existing LSM plan constraint system, and establishes a quantitative analysis of the LSM planning resource constrained duration optimization problem under the process interference factors. Combined with the interference factors in the construction process of a water diversion project, the simulation optimization calculation and analysis are carried out. Secondly, on the basis of solving the problem of optimal construction period of diversion project under the interference of process factors, the optimal cost of construction period is further considered from the perspective of the contractor, and the influence of the reward and penalty mechanism of owner on the optimization of construction cost is considered as well as the optimization of time cost. In order to solve this problem, a quantitative analysis model of time-cost equilibrium optimization problem is established, which is essentially a multi-objective optimization problem. In the optimization model, the possible construction mode and the reasonable cost corresponding to the different modes are defined for each construction operation of the construction project without construction. In the case of an operation affected by interference factors, By using the Pareto optimal frontier theory, some optimization schemes are obtained for the decision making of the contractor. In order to get the optimization result of this paper more efficiently, according to the established model, the solution program is written with the help of Matlab programming software. Combined with a large water transfer project, the optimization of the duration cost under the process interference is simulated and analyzed.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV67;TV51

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