多因素影响的建筑物群体震害预测方法研究
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摘要
为了简化震害预测工作,提出了一种多因素影响的建筑物群体震害预测方法。首先,将已有数据库中的资料按不同相似度进行分类,从中选取所需要的样本数据。然后将所选取的样本数据按不同影响因素分类,分别求出考虑各影响因子下的震害矩阵,再由房屋普查资料得出预测区考虑各影响因素时各影响因子下的房屋的建筑面积,并将建筑面积比例作为各影响因子的权重,最终得出预测区某种结构类型整体的震害矩阵。利用文中方法建立了厦门市多层砌体结构的震害矩阵,与厦门市采用单体抽样法得出的震害矩阵相比较,其平均震害指数最大差值不大于0.041,验证了此方法的可行性。
In order to simplify the work of earthquake damage predictions,this paper presents a method for the earthquake damage prediction of building groups based on multiple factors.First,data in the database should be classified into different groups according to similarity,and the required samples are selected.Then the selected samples are classified according to different influence factors.The earthquake damage matrixes of different categories of buildings are given,and then building areas of a predicted district are calculated according to survey data,and the raties of the building areas are given as weight of influencing factors.Finally,vulnerability matrix for a certain structural type can be set up.The earthquake damage matrix of multi-story masonry structures of Xiamen City is obtained using this method.After comparing with the results between the method of this paper and the single sampling one,the maximum difference of average earthquake damage index is no more than 0.041,which show that the approach is feasible.
In order to simplify the work of earthquake damage predictions,this paper presents a method for the earthquake damage prediction of building groups based on multiple factors.First,data in the database should be classified into different groups according to similarity,and the required samples are selected.Then the selected samples are classified according to different influence factors.The earthquake damage matrixes of different categories of buildings are given,and then building areas of a predicted district are calculated according to survey data,and the raties of the building areas are given as weight of influencing factors.Finally,vulnerability matrix for a certain structural type can be set up.The earthquake damage matrix of multi-story masonry structures of Xiamen City is obtained using this method.After comparing with the results between the method of this paper and the single sampling one,the maximum difference of average earthquake damage index is no more than 0.041,which show that the approach is feasible.
引文
[1]姜淑珍.多层砖房震害预测方法评述[J].自然灾害学报,2004,13(6):117-121.Jiang Shuzhen.Seismic damage prediction method of multistory brick buildings[J].Journal of Natural Disasters,2004,13(6):117-121.
[2]崔玉红,邱虎,聂永安,等.国内外单体建筑物震害预测方法评述[J].地震研究,2001,24(2):175-179.Cui Yuhong,Qiu Hu,Nie Yongan,et al.Research reviewof predictive method about single building in the world[J].Journal of Seismological Re-search,2001,24(2):175-179.
[3]孙柏涛,胡少卿.基于已有震害矩阵模拟的群体震害预测方法研究[J].地震工程与工程振动,2005,25(6):102-108.Sun Baitao,Hu Shaoqing.Amethod for earthquake damage prediction of building group based on existing earthquake damage matrix[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25(6):102-108.
[4]尹之潜,杨淑文.地震损失分析与设防标准[M].北京:地震出版社,2004.Yin Zhiqian,Yang Shuwen.Earthquake Loss Analysis and Fortification Standards[M].Beijing:Earthquake Press,2004.
[2]崔玉红,邱虎,聂永安,等.国内外单体建筑物震害预测方法评述[J].地震研究,2001,24(2):175-179.Cui Yuhong,Qiu Hu,Nie Yongan,et al.Research reviewof predictive method about single building in the world[J].Journal of Seismological Re-search,2001,24(2):175-179.
[3]孙柏涛,胡少卿.基于已有震害矩阵模拟的群体震害预测方法研究[J].地震工程与工程振动,2005,25(6):102-108.Sun Baitao,Hu Shaoqing.Amethod for earthquake damage prediction of building group based on existing earthquake damage matrix[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25(6):102-108.
[4]尹之潜,杨淑文.地震损失分析与设防标准[M].北京:地震出版社,2004.Yin Zhiqian,Yang Shuwen.Earthquake Loss Analysis and Fortification Standards[M].Beijing:Earthquake Press,2004.
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