框支密肋复合墙结构模型振动台试验研究  

Earthquake simulation test on multi-ribbed composite wall supported on frame

作　　者：袁泉[1] 何玉阳[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《振动与冲击》2014年第22期72-77,共6页Journal of Vibration and Shock

基　　金：国家科技支撑计划"村镇住宅新型抗震节能结构关键技术研究与示范"(2011BAJ08B02)

摘　　要：对1/6缩尺框支密肋复合墙结构模型进行振动台试验,研究结构模型经历弹性阶段、开裂直至破坏的不同阶段动力特性及反应。以El Centro波、Taft波、人工波为输入地震波,分别对设防烈度7度及8度多遇、基本、罕遇、超罕遇地震作用进行试验,研究模型结构在各阶段地震作用下加速度、位移、应变反应及破坏形式、破坏机理。试验结果表明,框支密肋复合墙结构转换层破坏模式为剪切型破坏,塑性变形主要集中在转换层;框支密肋复合墙结构各层绝对加速度响应主要取决于前两阶振型,高阶振型影响较小,其中第一阶振型起绝对控制作用。The shaking table test of the 1 /6 scale model of a multi-rib bed composite wall supported on frame was carried out.The test structure has undergone the whole process of elastic stage,cracking and destruction.The dynamic characteristics and the dynamic responses of the structure in the various stages were tested,taking respectively the El Centro wave,Taft wave,artificial seismic wave as the input signals,under the excitation of earthquakes with the seismic fortification intensity of frequent,basic,rare,very rare 7 degrees and 8 degrees.The acceleration,displacement and strain responses of the model structure in each phase under the action of earthquack as well as the failure mode and failure mechanism of the structure were investigated.The results show that：the main destruction mode of frame supported ribbed composite wall structure is the shear failure of its conversion layer.The plastic deformation is mainly concentrated on the conversion layer.The absolute acceleration response of each layer depends primarily on the first two vibration modes,the effect of higher order modes is rather small and the first mode plays a decisive role.

关 键 词：底框结构 密肋复合墙 转换层 抗震性能 振动台试验 

分 类 号：TU375[建筑科学—结构工程]