Multi-Objective Fuzzy Trade-Off Optimization in Construction Project Under Uncertainty

Based on the recent research on multi-objective optimization in construction project,the problem under uncertainty is discussed.The cost change rate and the quality change rate are described by fuzzy number,and the fuzzy numberα-cut level is considered as a parameter.The multi-objective fuzzy trade-off optimization model is established.The approach of the model is given,and the range of optimization compromise solution of objectives is found under different fuzzy numberα-cut level.The method can make decision-maker to choose the optimization objectives according the decision-making risk.