江苏高邮、宝应M_S4.9级地震现场震害调查与破坏原因研究
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摘要
江苏高邮、宝应MS4.9级地震在极震区造成了数10间农村民居不同程度和不同方式的破坏,出现人员伤亡。震后对地震灾害现场进行震害调查与破坏原因研究,典型的震害特征包括砖砌体、砖木和砖混结构房屋局部倾倒、墙体贯通开裂、房顶瓦片掀翻和烟囱倒塌等。农村民居遭到破坏的主要因素包括:选址不当、施工质量较差、砂浆强度不够、缺少圈梁和构造柱等。同时,分析了竖向地震作用和鞭梢效应等地震效应,讨论了砖砌体和砖混结构抗震设计的加固方法和改善抗震性能的构造措施等,为农村民居的抗震设防和减轻震害损失等提供参考。
2012 Gaoyou-Baoying MS 4.9 earthquake in Jiangsu province caused various damages involving tens of rural buildings,and seismic casualty is appeared in meizoseismic area.Based on the field investigation and research on damage post-earthquake,we found that the typical damage characteristics mainly includes local collapse of brick masonry,brick wood and brick concrete structure,through fracture of wall,tiles of roof tilting,and chimney collapse.The main factors causing the damage of the rural buildings are improper construction site,poor qualities of the buildings,inadequate mortar strength,and lack of ring beam and constructional column.Meanwhile,the seismic effect of vertical seismic action and whipping effect are analyzed.Both seismic design reinforced methods of brick masonry and concrete structure and constitution in order to improve anti-seismic capacity for rural buildings are discussed.Finally,our results can offer reference to the earthquake fortification and the reduction of damage loss.
2012 Gaoyou-Baoying MS 4.9 earthquake in Jiangsu province caused various damages involving tens of rural buildings,and seismic casualty is appeared in meizoseismic area.Based on the field investigation and research on damage post-earthquake,we found that the typical damage characteristics mainly includes local collapse of brick masonry,brick wood and brick concrete structure,through fracture of wall,tiles of roof tilting,and chimney collapse.The main factors causing the damage of the rural buildings are improper construction site,poor qualities of the buildings,inadequate mortar strength,and lack of ring beam and constructional column.Meanwhile,the seismic effect of vertical seismic action and whipping effect are analyzed.Both seismic design reinforced methods of brick masonry and concrete structure and constitution in order to improve anti-seismic capacity for rural buildings are discussed.Finally,our results can offer reference to the earthquake fortification and the reduction of damage loss.
引文
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周云,邹征敏,张超等,2009.汶川地震砌体结构的震害与改进砌体结构抗震性能的途径和方法.防灾减灾工程学报,29(1):109-113.
中华人民共和国标准,2001.中国地震动参数区划图(GB 18306-2001).北京:中国标准出版社.
中华人民共和国行业标准,2008.镇(乡)村建筑抗震技术规程(JGJ 161-2008).北京:中国建筑工业出版社.
都昌庭,李文巧,卢宁等,2006.2006年青海玉树5.0、5.6、5.4级地震灾害损失及震害特点.震灾防御技术,1(4):371—377.
冯建林,李德庆,秦建增等,2007.河南范县ML4.7级地震的启示.震灾防御技术,2(4):432—433.
高孟潭,肖和平,燕为民等,2010.中强地震活动地区地震区划重要性及关键技术进展.震灾防御技术,3(1):1-7.
高志兵,陶小三,孔建国等,2009.北川县城汶川地震震害特征及其成因探讨.防灾减灾工程学报,29(1):114-118.
洪海春,杨伟林,黄伟生等,2009.江苏省农村民居抗震措施与加固方法研究.震灾防御技术,4(2):223-232.
洪海春,侯康明,谭慧明等,2011.安徽安庆MS4.8级地震现场调查启示与震害特征分析.震灾防御技术,6(4):471-477.
刘爱文,常宝林,李雨生等,2006.2006年7月4日河北省文安5.1级地震震害分析.震灾防御技术,1(3):278-282.
彭小芹,马铭彬,2002.土木工程材料.重庆:重庆大学出版社.
曲淑英,王心健,曲乃泗等,2001.结构的鞭梢效应分析.烟台大学学报,14(1):55-59.
杨春田,于淑琴,1993.竖向地震作用对震害的影响.建筑结构,(7):25-30.
周云,邹征敏,张超等,2009.汶川地震砌体结构的震害与改进砌体结构抗震性能的途径和方法.防灾减灾工程学报,29(1):109-113.
中华人民共和国标准,2001.中国地震动参数区划图(GB 18306-2001).北京:中国标准出版社.
中华人民共和国行业标准,2008.镇(乡)村建筑抗震技术规程(JGJ 161-2008).北京:中国建筑工业出版社.
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