|
|
|
| Material procurement model for channel engineering based on GIS |
| SHI Xichen1, LIU Yongqiang1, LI Huimin2 |
| 1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2.School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450045, China |
|
|
|
|
Abstract In order to optimize the purchasing cost of enterprises and achieve intensive procurement objectives, a material procurement model for channel engineering is developed based on GIS, from the point of view of transportation route planning, by fusing operations research knowledges. At first, the material supply and storage points are decided, then transport routes are chosen by means of a GIS software, finally a route network model for material procurement is built. By applying the Floyd algorithm in graph theory to find the shortest transportation route between the material supply points and the material demand points, then the material transportation costs are figured out, and finally the comprehensive/total unit prices are determined by considering ex-factory prices. On this basis, a linear programming tool is introduced and a linear programming model for purchasing decision is established, in which the purchase quantities between supply and demand points are the variables to be optimized, the total purchase cost serves as objective function, comprehensive unit prices of materials are used as the value coefficient, while the balance of supply and demand are constraint conditions. The mode is solved by using MATLAB and VOGEL approximation method of allocation, respectively, and corresponding results by the two methods are compared. It is shown that the procurement cost can be reduced by RMB￥530 k predicted in MATLAB and RMB￥340 k with the VOGEL method. Obviously, the procurement program determined by the former is more attractive. Note that the purchasing model based on GIS has removed the uncertainty of material transportation route and distance in purchasing and solved the problem of unrealistically high purchasing cost. Naturally, this article provides a supplementary tool for proposing a scientific and reasonable procurement plan.
|
|
Received: 25 April 2016
|
|
|
|
| [1]苑东亮. 工程项目建设材料采购项目化管理研究[D].西安:西安建筑科技大学,2011.[2]秦常. 水利水电工程材料采购供应管理方式研究[D].南京:河海大学,2006.[3]HONG Jae-Dong, HAYYA J C. Just-in-time purchasing: single or multiple sourcing?[J]. International journal of production economics, 1992,27(2):175-181.[4]GHODSYPOUR S H, O′BRIEN C. The total cost of logistics in supplier selection, under conditions of multiple sourcing, multiple criteria and capacity constraint[J]. International journal of production economics, 2001,73(1):15-17.[5]崔星. 土建工程项目中材料供应的物流形式及管理[J]. 山西建筑,2010,36(36):204-205. CUI Xing. On logistical forms for material supply and management in civil engineering programs[J]. Shanxi architecture, 2010,36(36):204-205.(in Chinese)[6]吕茜,季常煦,王阳. 供应链下高速铁路工程物资采购模式的优化研究[J]. 物流技术,2007(8):175-177. LYU Qian, JI Changxu, WANG Yang. Research on the purchasing mode for high speed railway project[J]. Logistics technology, 2007(8):175-177.(in Chinese)[7]朱琦. 铁路施工项目物流运作模式优化研究[D].合肥:合肥工业大学,2008.[8]吴恒杰,王卓甫. 大型建筑集团应采用材料集中采购方式[J]. 建筑管理现代化,2000(3):41-42. WU Hengjie, WANG Zhoufu. The large-scale construction group should centrally procure building material[J]. Construction management modernization, 2000(3):41-42.(in Chinese)[9]张卫国. 线性规划在线路工程工地运输中的应用[J]. 电力建设, 2003,24(2):35-38. ZHANG Weiguo. Application of linear planning in site transportation of transmission line projects[J]. Electric power construction, 2003,24(2):35-38.(in Chinese)[10]王景辉. GIS技术在县域电网规划中的应用[J]. 电子科技,2013,26(8):124-125,129. WANG Jinghui. Application of GIS technology in county power grid planning[J]. Electronic science and techno-logy, 2013,26(8):124-125,129.(in Chinese)[11]卢厚清,黄劳生. 运输问题的研究[J]. 系统工程理论与实践,1997(10):120-126. LU Houqing, HUANG Laosheng. A study on transportation problem[J]. Systems engineering-theory & practice, 1997(10):120-126.(in Chinese)[12]蒋宏峰. 运输问题表上作业法的改进[J]. 长沙大学学报, 2002,16(2):47-48. JIANG Hongfeng. Modification of the table algorithm for transportation problem[J]. Journal of Changsha Universtiy, 2002,16(2):47-48.(in Chinese)[13]王升. 土方调配经济方案的Matlab实现[J]. 山西建筑, 2012,38(20):285-287. WANG Sheng. On Matlab realization of economical scheme for earthwork allocation[J]. Shanxi architecture, 2012,38(20):285-287.(in Chinese)[14]龚强. 论表上作业法与单纯形法的相关同一性——测绘运筹学线性规划计算方法解析[J]. 东北测绘,1998,21(1):3. GONG Qiang. On the correlation identity between the table and the simplex method——analysis of the calculation method of the linear programming of the operations research of surveying and mapping[J]. Northeast surveying and mapping, 1998,21(1):3.(in Chinese)[15]刘勇,刘宝坤,李光泉. 基于Matlab平台的遗传算法工具包[J]. 天津大学学报, 2001,34(4):490-494. LIU Yong, LIU Baokun, LI Guangquan. Realization and application of genetic algorithm oolbox based on Matlab[J]. Journal of Tianjin University, 2001,34(4):490-494.(in Chinese) |
|
|
|
