轻钢龙骨墙体拟动力试验研究

Pseudo-dynamic test on light-gauge steel framed wall

对一面壁厚为1mm的轻钢龙骨墙体进行拟动力试验,研究了该结构在地震作用下的破坏模式、变形、滞回、和刚度退化等抗震性能。结果表明:9度多遇地震下结构才开始出现塑性变形,说明结构表现出较好的抗震性能;7度罕遇地震下墙体节点出现严重变形,但仍有承载能力,结构延性系数为4.71,表明结构有很好的延性性能;由于结构节点1至节点7横杆与斜杆都有开孔,且受力复杂,所以破坏程度较为严重,建议在局部节点增加锚固件数量以增加强度。

Pseudo-dynamic test is conducted on a full-scale light-gauge steel framed wall with 1 mm thick. Failure mechanism, deformation properties, rigidity degradation,load-displacement curve and stiffness degeneration under seismic action are investigated. The results show that: the plastic deformation appears under 9 degree frequent earthquake,and the structure shows better seismic performance;the wall nodes are badly deformed under 7 degree rare earthquakes,but carrying capacity still exists, and ductility coefficient is 4.7,which shows that the structure has a good ducility performance. Due to the open hole and complex force of the structural nodes 1 to 7 crossbar and inclined rod, the damage is more serious, and the number of anchoring parts should be increased to increase the strength.