基于改进型 Naive Bayesian 算法的建筑物抗震能力评估

IF 1 Q3 GEOCHEMISTRY & GEOPHYSICS
Yalong Li, Wei Wang, Bin Tan, Hongxia Wang
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引用次数: 0

摘要

分析建筑抗震能力的影响因素,确定基于故障树分析法(FTA)的评估目标的基本成因事件,对 FTA 模型中的基本成因事件进行分类和归纳,构建建筑抗震能力的判断体系。采用基尼指数计算系统中各指标因子的权重,分析指标的重要性。在计算指数的斯皮尔曼相关系数的基础上,将改进的天真贝叶斯算法与指数的重要性相结合,建立房屋建筑抗震能力的判断模型。在该判断体系的基础上,结合霍山县部分房屋建筑的基础数据,构建样本集。为了提高泛化能力,避免过拟合,对混合抽样的 K-SMOTE 算法进行了改进,提高了样本的均衡性,并采用随机 k 倍交叉验证法进行样本划分和模型优化,实现了建筑物抗震能力等级的判定。研究结果表明(1)模型评价准确率为 93%,模型准确率和召回率分别为 0.913 和 0.93,表明模型具有较强的泛化能力。(2)选取一些实际的建筑实例,模型判断结果与实际结果一致,验证了所提方法建立模型的正确性,可有效用于建筑结构抗震能力的判断。(3) 将所提出的方法应用于六安大别山区建筑物的抗震能力评估,得出城市建筑物的抗震能力一般,而农村建筑物的抗震能力较差的结论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Building Seismic Capacity Based on Improved Naive Bayesian Algorithm
The influencing factors of building seismic capacity are analyzed, the basic cause events of the assessment target based on fault tree analysis (FTA) are determined, the basic cause events in the FTA model are classified and summarized, and a judgment system of building seismic capacity is built. The weight of each index factor in the Gini index calculation system is used, and the importance of the index is analyzed. On the basis of the Spearman correlation coefficient calculation of the index, the improved naive Bayesian algorithm is combined with the importance of the index to build a judgment model for the seismic capacity of housing buildings. The sample set is constructed based on the judgment system with the basic data of some housing buildings in Huoshan County. In order to improve the generalization ability and avoid overfitting, the K-SMOTE algorithm for mixed sampling was modified to improve sample balance, and random k -fold cross validation method was used for sample division and model optimization, achieving the determination of seismic capacity level of building. The research results indicate the following: (1) the accuracy of model evaluation is 93%, with model accuracy and recall rates of 0.913 and 0.93, respectively, indicating strong generalization ability of the model. (2) Selecting some actual examples of a building, the model judgment results are consistent with the actual results, verifying the correctness of the proposed method for building the model, which can be effectively used for determining the seismic capacity of building structures. (3) Applying the proposed method to the seismic capacity assessment of buildings in the Ta-pieh Mountains of Lu’an, it is concluded that the seismic capacity of urban buildings is common, while that of rural buildings is poor.
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来源期刊
International Journal of Geophysics
International Journal of Geophysics GEOCHEMISTRY & GEOPHYSICS-
CiteScore
1.50
自引率
0.00%
发文量
12
审稿时长
21 weeks
期刊介绍: International Journal of Geophysics is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles in all areas of theoretical, observational, applied, and computational geophysics.
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