砖石结构古建筑震后破坏状态评估方法

发布时间：2018-01-04 21:37

本文关键词：砖石结构古建筑震后破坏状态评估方法　出处：《西南交通大学学报》2016年04期 　论文类型：期刊论文

【摘要】：为提高砖石结构古建筑震后破坏状态评估的准确性,考虑到砖石结构古建筑震后破坏状态的评估涉及众多影响因素,且各因素之间存在相关性和不确定性,基于模糊数学理论,将砖石结构古建筑分为地基、基础和上部结构3个部分,选取11个指标作为评估因子,采用隶属函数法和类比法构造评判矩阵,再由层次分析法确定权系数向量,建立三层次两阶段的模糊综合评估模型.以羌寨碉楼为例,应用该模型对其在汶川地震后的破坏状态进行了评估,结果表明,根据该模糊综合评估模型,该碉楼在震后遭受中等程度破坏,评估等级为B级,评估结果与实际破坏状态相符,较准确地反映了震后砖石结构古建筑的破坏状态,为震后砖石古建筑采取维修措施提供了依据.
[Abstract]:In order to improve the accuracy of post-earthquake damage assessment of ancient masonry buildings, it is considered that the assessment of post-earthquake damage state of masonry structures involves many influential factors, and there is correlation and uncertainty among these factors. Based on the theory of fuzzy mathematics, the ancient masonry structure is divided into three parts: foundation, foundation and superstructure. Eleven indexes are selected as evaluation factors, and the evaluation matrix is constructed by membership function method and analogy method. Then the weight coefficient vector is determined by analytic hierarchy process (AHP), and a fuzzy comprehensive evaluation model with three levels and two stages is established. Taking Qiangzhai Diaolou as an example, the failure state of Qiangzhai Diao Lou after Wenchuan earthquake is evaluated by the model, and the results show that the model is effective. According to the fuzzy comprehensive evaluation model, the blockhouse suffered moderate damage after the earthquake, the evaluation grade is B, and the evaluation results are consistent with the actual damage state. It accurately reflects the damage state of the ancient masonry structures after the earthquake, and provides the basis for the maintenance measures of the ancient masonry buildings after the earthquake.
【作者单位】：西南交通大学土木工程学院;陆地交通地质灾害防治技术国家工程实验室;四川省建筑科学研究院;
【基金】：中国工程院咨询研究项目(2010-ZD-4) 国家留学基金资助项目(20123022)
【分类号】：TU311.3;TU-87;TU364
【正文快照】： 我国现存大量砖石结构古建筑,但由于其材料的脆性性质,加之建造年代久远,其抗震能力不足.近年来,汶川、芦山等地震使得大量砖石结构古建筑受损较重[1-2].目前,对于砖石结构古建筑的震后评估研究不足,相应的评估规范尚未出台,评估方法多以传统经验法较为主,具有简单、易行的特

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