基于模糊层次分析法的砖石木结构古建筑安全评价

发布时间：2018-04-10 01:32

本文选题：砖石木结构　切入点：古建筑　出处：《土木工程与管理学报》2017年05期

【摘要】：为了准确地对砖石木结构古建筑进行安全现状评价,考虑到砖石木结构古建筑的结构复杂性和安全评价因素的模糊性,本文提出了基于模糊层次分析法的评价方法。首先,将砖石木结构古建筑分为地基基础、承重木柱、承重木梁、木构架整体性、屋盖结构和墙体6个相对独立的部分,并建立27项影响每部分安全性的评价指标。然后,由层次分析法得到各评价指标的权重,根据建立的安全因素评判标准和两种类型的隶属函数对单因素进行模糊评价,利用多级模糊综合评价的原理建立三层次两阶段的砖石木结构古建筑安全评价模型。最后,通过工程实例对评价模型的可行性进行验证,评价结果为较安全,与依据现有规范的评价结果相比,利用模糊层次分析法得到的评价结果更接近于实际,可以为古建筑的修缮工作提供安全性现状依据。
[Abstract]:In order to accurately evaluate the safety status of ancient brick and stone structures, considering the complexity of the structure and the fuzziness of safety evaluation factors, this paper puts forward an evaluation method based on fuzzy analytic hierarchy process (FAHP).Firstly, the ancient masonry structure is divided into six independent parts: foundation, bearing timber column, load-bearing timber beam, wood frame integrity, roof structure and wall, and 27 evaluation indexes affecting the safety of each part are established.Then, the weight of each evaluation index is obtained by analytic hierarchy process (AHP), and the fuzzy evaluation of single factor is carried out according to the established criteria of safety factor evaluation and two types of membership function.Based on the principle of multilevel fuzzy comprehensive evaluation, a three-level and two-stage safety evaluation model for ancient masonry structures is established.Finally, the feasibility of the evaluation model is verified by an engineering example, and the evaluation results are safer. Compared with the evaluation results based on the existing norms, the evaluation results obtained by using the fuzzy analytic hierarchy process are closer to the reality.It can provide the present safety basis for the repair of ancient buildings.
【作者单位】：河南理工大学土木工程学院;
【基金】：国家自然科学基金(51408198) 河南省科技攻关项目(162102310421) 中国博士后科学基金面上资助项目(2015M570818)
【分类号】：TU311.2;TU36

【相似文献】