| dc.description.abstract | For earthwork construction, how to plan and use the current resources to have a fast, efficient and economical allocation and finish the project within the deadline is an important topic for the project manager.In the past, people usually use the traditional method to allocate depending on their experiences. However, this may be a competent way for small projects, but it usually wastes resources for the high workload earthwork construction . In order to provide the manager the assignment reference , this research uses the linear programming and optimal model to determine the most economical distribution of earthwork from cut sections or borrow pits to fill sections.
In the real working environment, the resources and limitations in all respects are not unchangeable. Through the sensitivity analysis model, the manager can automatically adjust the construction condition or resource distribution to match up other item’s limitations according to the changing tendency of every parameter’s sensitivity. Moreover, partial operation time can be reviewed again to modify the schedule diagram so that the resource can be fully utilized and cost can be saved.
As for the solution, this research model is established by linear programming method and the parameters of every constraint can be set according to the construction requirements and conditions in a certain time then the required schedule can be directly output by inputting LINGO package software. As regards the cost’s unit price estimation, this research uses EXCEL to get the referable unit price according to the cost of different materials, condition of routes, transportation distance, condition in the operation area… etc. For the manager, it can be a reference for the unit price.
This research’s model is suitable for the short-term allocation. In the real process, when the construction conditions change, the parameter can be adjusted and schedule can be rearranged. This research uses an industrial park developing project as an example. Comparing the traditional method, this research indicates a good performance. | en_US |