基于灾后援建特殊性的工序施工组织设计优化

发布时间：2018-10-08 22:00

【摘要】：灾后援建中,道路与建筑工程往往同时进行施工。道路通车后,建筑工程部分工序所用的材料费用由于运费下调会大幅下跌。通常建筑工程的管理者无法准确的确定道路通车时间,只能预估出一个时间段。在这期间内,可根据援建中的施工组织安排范式以周为单位进行优化。优化时采用动态规划模型,计算出每周的材料期望价格和每周的人工成本,并根据总周数(时间段)、一周额外增加工程量进行分类讨论可以得出一个规律性的结果。在总结其结果的基础上对原模型进行简化,简化后模型计算量大幅减少而且可以有更广泛的用途。该模型是分阶段进行优化,最终不仅可得到费用最低方案也可汇总各个阶段的方案进行比较。管理者可根据调整原施工组织设计的难易程度和节省的费用来确定最终的优化方案。同时该模型也可用于其他类似情况下的优化。
[Abstract]:In post-disaster construction, road and construction works are often carried out at the same time. Following the opening of roads, the cost of materials used in part of the construction process will fall sharply due to lower freight rates. Usually construction managers can not accurately determine the road opening time, can only predict a time period. During this period, the week can be optimized according to the pattern of construction organization. The dynamic programming model is used to calculate the material expected price and the weekly labor cost, and according to the total number of weeks (time period), a regular result can be obtained. On the basis of summarizing the results, the original model is simplified. After simplification, the calculation amount of the model is greatly reduced and can be used more widely. The model is optimized in stages, which can not only get the lowest cost scheme, but also sum up the schemes of each stage for comparison. The final optimization scheme can be determined by adjusting the difficulty and cost saving of the original construction organization design. At the same time, the model can also be used in other similar cases of optimization.
【作者单位】：天津大学管理与经济学部;
【基金】：国家自然科学基金资助项目(71172148)
【分类号】：TU721

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