|Table of Contents|

Optimization model of dry bulk feright in Yangtze River based on river-sea transportation mode and investment constraint(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2012年04期
Page:
93-99
Research Field:
交通运输规划与管理
Publishing date:

Info

Title:
Optimization model of dry bulk feright in Yangtze River based on river-sea transportation mode and investment constraint
Author(s):
RUAN Ning1; 2;  LI Xiang1;  LIU Zhi-xue1
1. School of Management, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China; 2. China Changjiang National Shipping(Group)Corporation, Wuhan 430062, Hubei, China
Keywords:
fleet planning;  dry bulk freight;  ship assignment;  river-sea transportation;  river-sea combined transportation;  investment constraint;  Lagrangian relaxation algorithm;  knapsack problem
PACS:
U695.27
DOI:
-
Abstract:
The concepts of river-sea transportation mode and investment constraint were introduced, the existed transportation network of dry bulk freight in Yangtze River was optimized, and the characteristics of river-sea transportation mode and river-sea combined transportation mode were compared. According to the characteristic of mature market for inland shipping and the management feature of rolling planning for shipping enterprise in China, the minimum operation cost and the minimum ship investment cost were taken as objective functions, and the model that integrated transportation mode selection, ship assignment and ship type update was set up. The time dimension of the model was simplified, the Lagrangian relaxation algorithm based on knapsack problem was designed, and the data of group A were used to solve the model. Analysis result shows that while the total shipping cost of current mode is taken as a reference point, the total shipping cost can decrease by about 2% after using river-sea combined transportation mode. After using river-sea transportation mode, the maximum descent range is more than 8%, but the financial risk will increase. While the fund cost rate is 7% and the investment constraint is not considered, cost-reduction effect increases by 16.2%, but net investment budget will raise by 60.1%. From the configuration of optimal route, the river-sea transportation mode and river-sea combined transportation mode must be used together on different routes. 3 tabs, 2 figs, 16 refs.

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Last Update: 2012-08-30