基于施工能力的过水围堰—隧洞导流方案多目标优化

通过分析工程对于工期、应力、防洪的要求建立过水围堰的多目标决策模型,采用单纯形法且不断调整摄动权重来求得pareto解.通过近似理想点排序法,对不同施工速度对应的非劣解集进行排序,选择每个施工速度对应的最优决策方案,根据施工速度限制选出最终决策方案.运用该模型采用关键工作窗口期的限制条件模拟了过水围堰工期限制,并根据围...

Multi-objective optimization of overflow cofferdam-tunnel diversion scheme based on construction capability

A multi-objective decision-making model of the overflow cofferdam was established based on the analysis of the requirements for construction time, stress, and flood control, then the pareto solution was obtained using the simplex method by constantly perturbing the weights. The approximate aspiration dot arrange method was used to sort the non-inferior solution sets corresponding to different construction speeds, through which the optimal decision-making plan for each construction speed was determined, and the final decision-making plan was then selected according to the construction speed limit. This model uses the constraints of the critical activity window period to simulate the construction time limit of the overflow cofferdam, and analyzes the relationship between the pouring intensity and the unit cost according to the construction technical characteristics of the cofferdam, and obtains the final decision-making plan after determining the optimal construction speed. This model takes into account the capbility constraints of the construction party, which is conducive to the decision-making of the design party. They can formulate an optimized scheme after considering the capabilities of the construction party.