Cost & Time Interaction Behavior on Construction Materials Procurement and Execution Processes in Infrastructure Projects
Cost & Time Interaction Behavior on Construction Materials Procurement and Execution Processes in Infrastructure Projects
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DOI：
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发表时间：
2020
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通讯作者：
K. R. Erzaij
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作者：
Aktham Kh. Majeed;K. R. Erzaij
建筑材料的成本构成了建筑项目总成本的很大一部分，因此，建筑材料采购缺乏合理的时间和成本管理规划将导致建筑材料供应和流动的不足，更不用说其延误和财务损失的负面后果，这通常被认为是产品退化的主要原因。这项研究将提出一个适用的采购管理系统模型的发展，特别是在伊拉克的水和污水基础设施项目中使用的UPVC和延性管。实际数据是从七个伊拉克基础设施项目中收集的。使用SBSS v.23统计分析程序对这些数据进行分析。在分析结果的基础上，利用MATLAB R2015 B和CurveExpert Basic软件建立了四种数学关系，建立了一个符合伊拉克建筑材料采购实际情况的采购管理系统，并利用巴格达省Al-Al-Alfiyia下水道项目的实际数据对该系统进行了测试。其中该系统显示出86%的准确度结果。
The cost of construction materials forms a large proportion of the total cost of construction projects Thus, the lack of a sound time and cost management planning for construction materials procurement will lead to deficiencies in the supply and flow of construction materials, not to mention its negative consequences of delays and financial losses which are often cited as major causes of product degradation. This research will present the development of an applicable procurement management system model particularly for UPVC & Ductile pipes used in water and sewage water infrastructure Projects in Iraq. Actual data are collected from seven Iraqi infrastructure projects. These data are analyzed by using SBSS v. 23 statistical analysis programs. On the bases of analyses results, four mathematical relationships have been developed by using MATLAB R2015B & CurveExpert Basic software to be used on building a realistic procurement management system with accurate, acceptable, and appropriate results for the construction materials procurement conditions in Iraq, the system was finally tested by using actual data from Al-Latifiyia sewer project in Baghdad governorate, where the system showed an accuracy results of 86%.