土坯墙承重民居抗震加固振动台试验研究  

Shaking Table Test Study on a Seismic Strengthening of Adobe Wall Bearing Dwellings

作　　者：周铁钢[1] 朱瑞召 朱立新[2] 于文[2] 包继宏 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]中国建筑科学研究院,北京100013

出　　处：《防灾减灾工程学报》2016年第2期181-187,共7页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家科技支撑计划课题项目(2014BAL06803);陕西省重点科技创新团队计划项目(2014KCT-31)资助

摘　　要：传统土坯墙承重民居由于材料自身缺陷、施工粗糙及缺乏抗震构造措施等原因.地震时经常发生严重损毁甚至倒塌。当前国内全面实施美丽乡村建设,对此类房屋进行抗震加固很有必要。提出的加固措施是在土坯墙体内外设置厚度较薄的水平和竖向配筋砂浆带,形成格栅配筋网,以约束土坯墙体并增强房屋的整体抗震性能。为验证以上措施的有效性,制作了单层单开间、1/2缩尺房屋加固模型,并进行了模拟地震振动台试验。试验表明:小震时格栅配筋带有效抑制了裂缝的出现和发展;大震时虽然墙体开裂较多.但由于约束较好,土坯未有剥落现象,8度大震时模型最大位移角达到1/195,总体上可以满足"小震不坏、中震可修、大震不倒"的设防目标。The traditional adobe wall bearing dwellings often suffer severe damage and even collapse during earthquake due to the material defects,rough construction and lack of details of seismic design and so on.The construction of The beautiful countryside is widely implemented in the country now,so it is necessary to reinforce this kind of building.According to earthquake damage characteristics,this paper puts forward the following reinforcement measures.In order to constraint the adobe walls and reinforce the overall seismic performance of the building,both inside and outside the wall we set up the horizontal and vertical reinforced thin mortar to form the grid reinforcement mesh.In order to verify the effectiveness of the above measures,1/2 scale building reinforcement model of monolayer and single bay was made and shaking table seismic simulation test was carried out.The shaking table test results show grid reinforcement mesh effectively restrains the emergence and development of cracks under frequently occurring earthquakes.The wall cracks are more under the seldom occurring earthquake,but adobe hasn＇t the phenomenon of peeling off due to the better constraint.The maximum displacement angle of the model is 1/195 under the seldom occurring earthquake with intensity 8.The reinforcement model can attain the design goal,which is ＂intact under the frequently occurring earthquakes,repairable under the moderate earthquakes,and don＇t be collapsed under the seldom occurring earthquakes＂.

关 键 词：传统民居 土坯墙承重 抗震加固 振动台试验 

分 类 号：TU361[建筑科学—结构工程] TU317.1