论文部分内容阅读
城市中心区深基坑对施工环境、施工周期、施工安全性指标要求都很高,桩锚支护结构体系在这些深基坑支护中应用非常广泛。结合长沙市五一商圈内的某深基坑特点,引入可以解决事物模糊性和不相容性的模糊物元优化理论对该基坑支护方案进行评价。针对桩锚支护结构在基坑工程设计中呈现的多目标性和设计参数模糊性特点,应用模糊物元优化理论建立了各种不同桩锚体系支护方案的评价指标体系和模型。通过求解和比较各方案与理论最优方案的关联度,最后得出最优设计方案。该方法可为桩锚体系设计提供一些参考。
Deep foundation pit in urban area has high requirements on construction environment, construction period and construction safety index. The pile-anchor supporting structure system is widely used in these deep foundation pit support. Combined with the characteristics of a deep foundation pit in the Wuyi district of Changsha City, fuzzy matter element optimization theory that can solve the ambiguity and incompatibility of things is introduced to evaluate the support plan of the foundation pit. In view of the multi-objective characteristics and the ambiguity of the design parameters of the foundation-pits in pile-anchor supporting structure design, the evaluation index system and model of various pile-anchor supporting schemes are established by using the fuzzy matter-element optimization theory. By solving and comparing the correlation between each program and the theoretical optimal program, finally, the optimal design plan is obtained. This method can provide some references for the design of pile-anchor system.