【摘要】 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。更多还原

【Abstract】 The excavations in urban areas are highly required for the construction environment,the construction period and the safety index,so the pile-anchor supporting scheme has been wildly used in the excavations.Combined the characters of certain excavation in the core trade area beside Wuyi Road in Changsha,the fuzzy matter-element theory which could solve the questions characterized with the fuzzy and incompatibility is induced to evaluate the supporting schemes.Aiming at the properties of the multi-objects and fuzzy which are shown in the design process of the excavation supporting scheme,the evaluation index system and the model for different pile-anchor bracing systems are established based on fuzzy matter-element theory.Through solving the correlation degree values between the real scheme and the theoretical optimal scheme,the optimal design is determined.The method could provide the reference for the further design of the pile-anchor supporting scheme.更多还原