摘要
2014年3月30日湖北省秭归县发生M4.7地震,震中烈度Ⅵ度,地震对震中区的房屋造成了不同程度的损坏。通过对震中区房屋震害情况进行抽样统计和分析,归纳总结了农村两种常见类型房屋的典型震害特征,并对其原因进行深入的分析。在此基础上,对农村民居的场地选择及设计施工等提出一些建议,可以为灾区及其他抗震设防地区的农居建设及政府决策提供依据和参考。
On March 30,2014,aM4.7earthquake occurred in the Zigui county,in Hubei province.The epicenter intensity reached Ⅵ.The earthquake caused various degrees of damage to houses in the epicentral area.According to on-site investigation data conducted after the earthquake,through the sampling statistics and analysis on house damage in the epicentral area,two typical and common house damages in rural areas are summarized in this work.There are three main reasons for theⅥ damage caused by the earthquake to the houses in the area studied.First,the house foundation is mishandled.Most damaged houses are located in the scarp near the Yangtze River,where part of the houses lie on bedrock foundation and part lie on artificial stone masonry.Therefore,the houses are prone to uneven deformation and cracking.Second,high mountains and deep valleys also have an effect.Due to the amplification of ground motion in abrupt mountain terrain,the houses will suffer stronger seismic action and thus house damage occurs.Third,the houses＇ structure is defective and the construction quality is unqualified.Most of the damaged houses have cavities in the walls and the constructional columns are missing.The design and construction are not standardized.Hence,the houses are vulnerable to damage caused by earthquakes.Based on the investigation and analysis,four suggestions on the site selection,design,and construction of rural housing have been put forward in this study.These suggestions can provide the basis and reference for the rural construction and government decision-making in the disaster area and other earthquake prone areas.First,the houses should be built in areas which aid earthquake resistant structures.The houses should not be built on towering isolated hills and steep slopes.Second,houses should be built with constructional columns and ring beam structures and with a superior strength of mortar.These are the key measures to ensure that masonry structures do not collapse.Third,the house builders should put emphasis on the foundations design.Finally,the government should train building craftsmen in the rural areas and improve earthquake resistance knowledge.
出处
《地震工程学报》
CSCD
北大核心
2016年第4期669-672,共4页
China Earthquake Engineering Journal
基金
中国地震局地震应急青年重点任务(CEA_EDEM-2015)
关键词
秭归M4.7地震
房屋震害
抽样统计
农村民居
抗震设防
Zigui M4.7 earthquake
building damage
sampling statistics
rural buildings
seismic fortification
作者简介
吴建超（1985-），男，工程师，硕士，主要从事地震工程研究。E—mail：jianchaowu85@gmail．com。
