Study on influencing factors of prefabricated building construction cost based on GCA-TOPSlS
It describing the main factors affecting the cost of prefabricated buildings and their influence weights in order to better control its cost,and there are 20 influence factors after scientifically and seriously analysis and investigation about it,and each influencing factor was divided into levels by using the interpretive structural model algorithm,and ultimately the weight of each level of influencing factors was calculated using the AHP(Analytic Hierarchy Process).The result indicates that material prices and assembled ratio have a greater im-pact on the cost of prefabricated buildings among various influencing factors.Finally,an evaluation model of the cost of prefabricated build-ings is created through GCA(grey correlation analysis)and TOPSIS(technique for order preference by similarity to ideal solution),and the indicators of influencing factors are quantified.Then,the cost difference under different conditions is evaluated after calculating the posi-tive and negative ideal solutions and relative closeness under each condition,and the prefabricated shear wall structure residential building of the shanty town renovation project in economic and technological development zone is used to verify the model of the algorithm.
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