摘要
村镇建筑土坯结构在一定地域仍有较多应用,为提高土坯结构的抗震能力、减小地震反应,提出了再生砖-土坯组合砌体结构,还提出了一种玻璃珠-石墨基础滑移隔震系统。进行了足尺再生砖-土坯组合砌体结构的振动台试验,采用了玻璃珠-石墨基础滑移隔震系统,研究了结构动力特性与损伤演化过程,分析了影响结构地震反应的主要因素,阐明了隔震系统减小结构地震反应的作用。研究表明:基础滑移隔震再生砖-土坯组合砌体结构具有良好的工作性能;小震下,玻璃珠-石墨基础滑移隔震系统不启动,结构地震反应与抗震结构类似;中震下,玻璃珠-石墨基础滑移隔震系统启动,减轻了上部结构的地震作用;大震下,基础滑移隔震系统工作良好,有效地减缓了上部结构的损伤破坏;再生砖-土坯组合砌体结构可用于村镇砌体结构的抗震设计。
Adobe structure of rural building is still used in many areas. In order to improve its seismic performance,a kind of masonry structure composed of regeneration brick and adobe,as well as glass beads- graphite foundation seismic isolation was proposed to reduce the seismic response. This full scale composite masonry building adopting the glass beads- graphite base isolation system was tested on a shake table. Based on the test,the structural dynamic behavior and damage evolvement process were studied. Main factors influencing the structural seismic response were analyzed,and the function of the isolation system to reduce the structural seismic response was clarified. The test shows that,the proposed masonry structure,composed of regeneration brick and adobe,with base isolation system,has good performance; under small earthquakes,the glass beads- graphite base isolation system is not activated,and the structural seismic response similar to seismic resistant structures; under moderate earthquakes,the base isolation system starts,and the seismic effect exerted to the upper structure is reduced; under major earthquakes,the base isolation system works well,which effectively mitigates the damage of the upper structure. The masonry structures composed of regeneration brick and adobe are suitable to apply in rural areas.
出处
《自然灾害学报》
CSCD
北大核心
2015年第6期131-138,共8页
Journal of Natural Disasters
基金
"十二五"国家科技支撑计划项目(2015BAL03B01)~~
关键词
再生砖-土坯组合砌体
基础滑移隔震
结构性能
振动台试验
masonry structure composed of regeneration brick and adobe
sliding base isolation
structural behaviour
shaking table test
