Abstract The shield construction effects in different strata are greatly different because of complex geological conditions. The customized shield machine and design scheme for a specific project can not perfectly fit into other projects, and so the problems of evaluation of design adaptability of shield cutterhhead system need to be solved urgently. In this paper, the influence mechanism of design adaptability of shield cutterhead system is analyzed, and an analysis model and an evaluation method for design adaptability of shield cutterhead system are proposed based on improved TOPSIS method by taking the quality membership matching degree between current design and target design as the initial data of the evaluation model. Based on the current design of a cutterhead system, its design adaptability is analyzed and evaluated for its application to metro construction in certain city. It is concluded that the adaptability of the 17 design items of the shield cutterhead system is general, and the adaptability sequences of the 9 evaluation indexes in descending order are adaptability of engineering construction, adaptability of tunnelling parameters, technical adaptability, adaptability of excavation face stability, adaptability of environmental protection, adaptability of construction safety, adaptability of economy, adaptability of geological conditions and adaptability of durability. The proposed model and method can effectively evaluate the design adaptability of cutterhead system, provide scientific basis for decision making of rebuild and maintenance when the shield machine is reused in other projects, and improve the design adaptability and market competitiveness of cutterhead system.
Abstract：
The shield construction effects in different strata are greatly different because of complex geological conditions. The customized shield machine and design scheme for a specific project can not perfectly fit into other projects, and so the problems of evaluation of design adaptability of shield cutterhhead system need to be solved urgently. In this paper, the influence mechanism of design adaptability of shield cutterhead system is analyzed, and an analysis model and an evaluation method for design adaptability of shield cutterhead system are proposed based on improved TOPSIS method by taking the quality membership matching degree between current design and target design as the initial data of the evaluation model. Based on the current design of a cutterhead system, its design adaptability is analyzed and evaluated for its application to metro construction in certain city. It is concluded that the adaptability of the 17 design items of the shield cutterhead system is general, and the adaptability sequences of the 9 evaluation indexes in descending order are adaptability of engineering construction, adaptability of tunnelling parameters, technical adaptability, adaptability of excavation face stability, adaptability of environmental protection, adaptability of construction safety, adaptability of economy, adaptability of geological conditions and adaptability of durability. The proposed model and method can effectively evaluate the design adaptability of cutterhead system, provide scientific basis for decision making of rebuild and maintenance when the shield machine is reused in other projects, and improve the design adaptability and market competitiveness of cutterhead system.
SUN Jianping TANG Zhaoping
.Study and Evaluation on the Design Adaptability of Shield Cutterhead System[J] MODERN TUNNELLING TECHNOLOGY, 2020,V57(4): 27-36
2020, Vol. 57 