Rio Loro改质混兑站项目是中化石油勘探开发下属公司Emerald公司的一个地面工程建设项目,该项目的主要目的是用于Capella重油的改质混兑,充分利用Gigante油田轻油品质好的优势,与Capella油田重油通过1∶3的比例进行混兑,使Capella重油的...Rio Loro改质混兑站项目是中化石油勘探开发下属公司Emerald公司的一个地面工程建设项目,该项目的主要目的是用于Capella重油的改质混兑,充分利用Gigante油田轻油品质好的优势,与Capella油田重油通过1∶3的比例进行混兑,使Capella重油的API°能够从9°提高到24°,同时该项目选址紧临国道旁边,更有利于改质后原油罐车运输。该项目的主要功能是罐车卸油、原油储存、稀油重油混兑及罐车装油。主要对项目的团队建设、设计管理、进度控制、质量控制、成本控制、HSE管理、招投标、合同及采购、资金管理等方面进行了全面管理。展开更多
Time, cost, and quality are three key control factors in rockfill dam construction, and the tradeoff among them is important. Research has focused on the construction time-cost-quality tradeoff for the planning or des...Time, cost, and quality are three key control factors in rockfill dam construction, and the tradeoff among them is important. Research has focused on the construction time-cost-quality tradeoff for the planning or design phase, built on static empirical data. However, due to its intrinsic uncertainties, rockfill dam construction is a dynamic process which requires the tradeoffto adjust dynamically to changes in construction conditions. In this study, a dynamic time-cost-quality tradeoff （DTCQT） method is proposed to balance time, cost, and quality at any stage of the construction process. A time-cost-quality tradeoff model is established that considers time cost and quality cost. Time, cost, and quality are dynamically estimated based on real-time monitoring. The analytic hierarchy process （AHP） method is applied to quantify the decision preferences among time, cost, and quality as objective weights. In addition, an improved non-dominated sorting genetic algorithm （NSGA-II） coupled with the technique for order preference by similarity to ideal solution （TOPSIS） method is used to search for the optimal compromise solution. A case study project is analyzed to demonstrate the applicability of the method, and the efficiency of the proposed optimization method is compared with that of the linear weighted sum （LWS） and NSGA-II.展开更多
基金Project supported by the Innovative Research Groups of the National Natural Science Foundation of China （No. 51621092）, the National Basic Research Program （973 Program） of China （No. 2013CB035904）, and the Natural Science Foundation of China （No. 51439005）
文摘Time, cost, and quality are three key control factors in rockfill dam construction, and the tradeoff among them is important. Research has focused on the construction time-cost-quality tradeoff for the planning or design phase, built on static empirical data. However, due to its intrinsic uncertainties, rockfill dam construction is a dynamic process which requires the tradeoffto adjust dynamically to changes in construction conditions. In this study, a dynamic time-cost-quality tradeoff （DTCQT） method is proposed to balance time, cost, and quality at any stage of the construction process. A time-cost-quality tradeoff model is established that considers time cost and quality cost. Time, cost, and quality are dynamically estimated based on real-time monitoring. The analytic hierarchy process （AHP） method is applied to quantify the decision preferences among time, cost, and quality as objective weights. In addition, an improved non-dominated sorting genetic algorithm （NSGA-II） coupled with the technique for order preference by similarity to ideal solution （TOPSIS） method is used to search for the optimal compromise solution. A case study project is analyzed to demonstrate the applicability of the method, and the efficiency of the proposed optimization method is compared with that of the linear weighted sum （LWS） and NSGA-II.
