资源描述：
《汶川8_0级地震甘肃陇南地区建筑震害调查》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、第32卷第2期西北地震学报Vol.32No.22010年6月NORTHWESTERNSEISMOLOGICALJOURNALJune,2010汶川8.0级地震甘肃陇南地区建筑震害调查①1,32121刘玮,吴志坚,马宏旺,王兰民,陈龙珠(1.上海交通大学安全与防灾工程研究所,上海200240;2.中国地震局兰州地震研究所,甘肃兰州730000;3.浙江大学宁波理工学院土木系,浙江宁波315100)摘要:总结了2008年汶川8.0级地震在甘肃陇南地区造成的农村房屋和城镇房屋的典型震害及其原因。考察发现,由于农村房屋一般未经抗震设防设计,在本次地震中即使在低烈度地区仍然震害严重;而城镇房屋震害
2、较轻,一般均表现出良好的抗震性能,严重破坏的大多是一些施工质量差,缺乏良好的抗震概念设计以及改建时未考虑抗震设计的建筑。建筑震害调查的几个地区设防烈度均为Ⅷ度,实际烈度为Ⅵ～Ⅸ度,因此这些地区的房屋震害情况刚好能反映这些地区房屋抵抗小震、中震及大震的能力。结果表明,严格按照抗震规范设计、并保证施工质量的建筑基本都能达到三水准设防目标。最后本文对灾后重建和抗震设防提出了建议。关键词:汶川地震;震害调查;三水准抗震设防;农村房屋;城镇房屋;设防烈度中图分类号:TU352.1;P315.9文献标识码:A文章编号:1000-0844(2010)02-0179-07DamageInvestigat
3、ionofBuildingsinSouthernGansuProvinceduringtheWenchuanMS8.0Earthquake1,32121LIUWei,WUZhi2jian,MAHong2wang,WANGLan2min,CHENLong2zhu(1.InstituteofEngineeringSafetyandDisasterPrevention,ShanghaiJiaotongUniversity,Shanghai200240,China;2.LanzhouInstituteofSeismology,CEA,Lanzhou730000,China;3.Departmen
4、tofCivilEngineering,NingboInstituteofTechnology,ZhejiangUniversity,ZhejiangNingbo315100,China)Abstract:ThetypicalseismicdamagesofbuildingsinbothruralandurbanareasinsouthernGansuprov2inceduringtheWenchuanMS8.0earthquakein2008andthecorrespondingreasonsaresummarized.Theinvestigationshowedthattheseis
5、micdamagesofruralbuildingswereverydifferentfromthatofurbanbuildings.Generally,theconstructionofruralbuildingsdoesnotfollowtheseismicdesigncode,whichleadstoseriousdamageeveninlow2intensityseismicareas.Urbanbuildings,ontheotherhand,general2lysurvivedtheearthquakewithlightormoderatedamage.Itwasfound
6、thatseveredamagesofurbanbuildingweremostlycausedbytheeffectofpoorconstructionquality,improperdesignandunreasonablereconstruction.Theseismicfortificationintensitiesforthoseinvestigatedregionsareall8degree,whiletherealintensitiesare6～9degrees.Sotheobservedseismicdamagecouldbeusedtodemonstratewhethe
7、rthecurrentdesignmethodscouldsatisfytheThree2Levelperformancefortificationtarget.Thesur2veyresultshowsthatbuildingswithgoodseismicdesignandconstructionallhaveawellseismicbehav2ior,andthedistributionsofbuildingdamagesha
