考虑抗倒能力的砌体结构震害预测
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摘要
以往对砌体结构的抗震鉴定或震害预测方法没有考虑构造柱、圈梁等抗震措施对增强砌体结构抗倒能力的影响,使得在高烈度下的鉴定或震害预测结果多为倒塌,这与震害实际不符合。实际在高烈度区,有一些砌体结构并没有倒塌。本文按照杨玉成等[1]提出的用抗倒增强系数修正楼层综合抗震能力指数方法,将抗倒增强系数的取值推广到不同工况;提出地震烈度为Ⅹ度时烈度影响系数为4.0;推演了杨玉成等提出的用综合抗震能力指数表示的震害预测判别标准。按此法进行了24栋建筑的分析,震害预测结果显示考虑抗倒能力的方法适用于高烈度下的砌体结构震害预测,简单易用,符合震害实际。
The existing earthquake damage prediction method for masonry buildings generally does not consider that the constructural columns and ring beams can increase the collapse-resistant capacity of masonry buildings.It results in that most masonry buildings will collapse in high-intensity,which do not meet actual damage.Based on comprehensive damage prediction method proposed by Yang[1],the seismic collapse-resistant enhancement coefficients for different structure types of masonry buildings are provided in this paper.In addition,we propose that the intensity influence coefficient is 4.0;and deduce the damage prediction criterion of the comprehensive damage prediction method in detail.24 case studies by this method are provided to show that this method is practical and simple for earthquake damage prediction of masonry buildings in high intensity particularly.
The existing earthquake damage prediction method for masonry buildings generally does not consider that the constructural columns and ring beams can increase the collapse-resistant capacity of masonry buildings.It results in that most masonry buildings will collapse in high-intensity,which do not meet actual damage.Based on comprehensive damage prediction method proposed by Yang[1],the seismic collapse-resistant enhancement coefficients for different structure types of masonry buildings are provided in this paper.In addition,we propose that the intensity influence coefficient is 4.0;and deduce the damage prediction criterion of the comprehensive damage prediction method in detail.24 case studies by this method are provided to show that this method is practical and simple for earthquake damage prediction of masonry buildings in high intensity particularly.
引文
[1]杨玉成,孙柏涛.论多层砖砌体住宅楼的抗倒设计—汶川地震映秀镇漩口中学宿舍楼震害探究[J].地震工程与工程振动,2010,30(6):1-12.YANG Yucheng,SUN Baitao.On seismic collapse resistant design of multi-story brick masonry buildings:Finding the causes of seismic damage tomulti-story hostels of Xuankou Middle School in Yingxiu Town during Wenchuan earthquake[J].Journal of Earthquake Engineering and Engineer-ing Vibration,2001,30(6):1-12.(in Chinese)
[2]孙柏涛,周强,杨玉成.乡镇中小学校舍抗震抗倒安居安学设防目标—汶川地震北川擂鼓镇中小学校舍震害原因探究[J].地震工程与工程振动,2011,31(2):1-8.SUN Baitao,ZHOU Qiang,YANG Yucheng.Seismic fortification objects of rural primary and middle scools:The damage cause study for primaryand middle school buliadings of Leigu Town,Beichuan County in Wenchuan earthquake[J].Journal of Earthquake Engineering and EngineeringVibration,2011,31(2):1-8.(in Chinese)
[3]杨玉成,杨柳,高云学.唐山地震多层砖房震害与强度的关系[J].地震工程与工程振动,1980,1:42-52.YANG Yucheng,YANG Liu,GAO Yunxue.Elation between damage to multistorey storey brick buildings and their strength during the Tangshanearthquake[J].Journal of Earthquake Engineering and Engineering Vibration,1980,1:42-52.(in Chinese)
[4]杨玉成,杨柳,高云学.现有多层砖房震害预测的方法及其可靠度[J].地震工程与工程振动,1982,3:76-84YANG Yucheng,YANG Liu,GAO Yunxue,Method of damang prediction for existing multi-story brick buildings and its reliability[J].Journal ofEarthquake Engineering and Engineering Vibration,1982,3:76-84.(in Chinese)
[5]江近仁,洪峰.多层砖房的地震可靠性分析[J].地震工程与工程振动,1985,5(4):16-28.JIANG Jinren,HONG Feng.Reliability analysis of multistory buildings subjected to seismic load[J].Journal of Earthquake Engineering and Engi-neering Vibration,1985,5(4):16-28.(in Chinese)
[6]防灾科技学院.西昌市建筑物抗震能力调查研究报告[R].三河:防灾科技学院,2010.Institute of Disaster Prevention.The survey report of building seismic capacity in Xichang City[R].Sanhe:Institute of Disoster Prevention,2010.(in Chinese)
[7]尹之潜,赵直,杨淑文.建筑物易损性和地震损失与地震加速度谱值的关系(上)[J].地震工程与工程振动,2003.23(4):196-202.YIN Zhiqian,ZHAO Zhi,YANG Shuwen.Relation between vulnerability of buildings and earthquakek acceleration spectra(1)[J].Journal ofEarthquake Engineering and Engineering Vibration,2003,3(4):196-202.(in Chinese)
[8]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,2004:102-110.YIN Zhiqian,YANG Shuwen.Earthquake loss analysis and fortification standards[M].Beijing:China Earthquake Press,2004:102-110.(inChinese)
[9]GB50023-2009建筑抗震鉴定标准[S].GB 50023-2009 Seismic Identification of Standards[S].(in Chinese)
[10]GB50011-2010建筑抗震设计规范[S]GB 50011-2010 Seismic Design of Buildings[S].(in Chinese)
[11]王亚勇,等.汶川地震建筑震害启示录[M].北京:地震出版社,2009.WANG Yayong,Wenchuan earthquake building damage revelation[M],Beijing:Earthquake Press,2009.(in Chinese)
[12]胡聿贤.地震工程学[M].北京:地震出版社,2008:44-50.HU Yuxian.Earthquake engineering[M].Beijing:China Earthquake Press,2008:44-50.(in Chinese)
[13]兰景岩,刘红帅,吕悦军,等.表层土剪切波速的不确定性对地表设计谱平台值的影响[J].吉林大学学报:地球科学版,2012,42(3):772-778.LAN Jingyan,LIU Hongshuai,LU Yuejun,et al.Effects of uncertainties of shear wave velocity of soill surface layer on platform value of surface de-sign response spectra[J].Journal of Jilin University:Earth Science Edition,2012,42(3):772-778.(in Chinese)
[14]兰景岩,吕悦军,刘红帅.地震动强度及频谱特征对场地震反应分析结果的影响[J].震灾防御技术,2012,7(1):37-45.LAN Jingyan,LU Yuejun,LIU Hongshuai.Influence of intensity and frequency of ground motion on site earthquake response[J].Technology forEarthquake dissaster Prevention,2012,7(1):37-45.(in Chinese)
[2]孙柏涛,周强,杨玉成.乡镇中小学校舍抗震抗倒安居安学设防目标—汶川地震北川擂鼓镇中小学校舍震害原因探究[J].地震工程与工程振动,2011,31(2):1-8.SUN Baitao,ZHOU Qiang,YANG Yucheng.Seismic fortification objects of rural primary and middle scools:The damage cause study for primaryand middle school buliadings of Leigu Town,Beichuan County in Wenchuan earthquake[J].Journal of Earthquake Engineering and EngineeringVibration,2011,31(2):1-8.(in Chinese)
[3]杨玉成,杨柳,高云学.唐山地震多层砖房震害与强度的关系[J].地震工程与工程振动,1980,1:42-52.YANG Yucheng,YANG Liu,GAO Yunxue.Elation between damage to multistorey storey brick buildings and their strength during the Tangshanearthquake[J].Journal of Earthquake Engineering and Engineering Vibration,1980,1:42-52.(in Chinese)
[4]杨玉成,杨柳,高云学.现有多层砖房震害预测的方法及其可靠度[J].地震工程与工程振动,1982,3:76-84YANG Yucheng,YANG Liu,GAO Yunxue,Method of damang prediction for existing multi-story brick buildings and its reliability[J].Journal ofEarthquake Engineering and Engineering Vibration,1982,3:76-84.(in Chinese)
[5]江近仁,洪峰.多层砖房的地震可靠性分析[J].地震工程与工程振动,1985,5(4):16-28.JIANG Jinren,HONG Feng.Reliability analysis of multistory buildings subjected to seismic load[J].Journal of Earthquake Engineering and Engi-neering Vibration,1985,5(4):16-28.(in Chinese)
[6]防灾科技学院.西昌市建筑物抗震能力调查研究报告[R].三河:防灾科技学院,2010.Institute of Disaster Prevention.The survey report of building seismic capacity in Xichang City[R].Sanhe:Institute of Disoster Prevention,2010.(in Chinese)
[7]尹之潜,赵直,杨淑文.建筑物易损性和地震损失与地震加速度谱值的关系(上)[J].地震工程与工程振动,2003.23(4):196-202.YIN Zhiqian,ZHAO Zhi,YANG Shuwen.Relation between vulnerability of buildings and earthquakek acceleration spectra(1)[J].Journal ofEarthquake Engineering and Engineering Vibration,2003,3(4):196-202.(in Chinese)
[8]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,2004:102-110.YIN Zhiqian,YANG Shuwen.Earthquake loss analysis and fortification standards[M].Beijing:China Earthquake Press,2004:102-110.(inChinese)
[9]GB50023-2009建筑抗震鉴定标准[S].GB 50023-2009 Seismic Identification of Standards[S].(in Chinese)
[10]GB50011-2010建筑抗震设计规范[S]GB 50011-2010 Seismic Design of Buildings[S].(in Chinese)
[11]王亚勇,等.汶川地震建筑震害启示录[M].北京:地震出版社,2009.WANG Yayong,Wenchuan earthquake building damage revelation[M],Beijing:Earthquake Press,2009.(in Chinese)
[12]胡聿贤.地震工程学[M].北京:地震出版社,2008:44-50.HU Yuxian.Earthquake engineering[M].Beijing:China Earthquake Press,2008:44-50.(in Chinese)
[13]兰景岩,刘红帅,吕悦军,等.表层土剪切波速的不确定性对地表设计谱平台值的影响[J].吉林大学学报:地球科学版,2012,42(3):772-778.LAN Jingyan,LIU Hongshuai,LU Yuejun,et al.Effects of uncertainties of shear wave velocity of soill surface layer on platform value of surface de-sign response spectra[J].Journal of Jilin University:Earth Science Edition,2012,42(3):772-778.(in Chinese)
[14]兰景岩,吕悦军,刘红帅.地震动强度及频谱特征对场地震反应分析结果的影响[J].震灾防御技术,2012,7(1):37-45.LAN Jingyan,LU Yuejun,LIU Hongshuai.Influence of intensity and frequency of ground motion on site earthquake response[J].Technology forEarthquake dissaster Prevention,2012,7(1):37-45.(in Chinese)
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