摘要
对4.8×2.8m轻型钢木混合楼盖平行及垂直于搁栅方向分别进行了水平往复加载拟静力试验研究，得到了其变形特征、破坏模式、强度、平面内刚度、耗能以及延性。结果显示平行及垂直于搁栅加载时，楼盖变形都以剪切变形为主，主要破坏模式都是两加载点以外的面板钉剪断。垂直于搁栅相比平行于搁栅加载具有更高的强度、平面内刚度、更好的耗能性能和延性。另外将这些参数与FEMA273、ASCE 41-06及NSZEE规范建议值作了比较。结果表明楼盖平面内刚度大大低于FEMA273建议值，高于ASCE 41-06及NSZEE，但与ASCE 41-06更接近。楼盖强度及延性均高于这些规范建议值。
Abstract
Horizontal cyclic pseudo-static experimental study were conducted separately on parallel and perpendicular to joist direction of light wood-steel hybrid diaphragm of 4.8×2.8m, by which its deformation feature, failure mode, strength, in-plane stiffness, energy dissipation and ductility were obtained. The result showed that whatever the diaphragm was loaded parallel or perpendicular to joist, shear deformation occupied the vast majority of total deformation and panel nail clipped outside the two loading point was the main failure mode. Moreover, In contrast to the diaphragm loaded parallel to joist, it loaded perpendicular maintained higher strength, in-plane stiffness, better energy dissipation performance and ductility. In addition, these parameters were compared with the provision in FEMA273, ASCE 41-06 and NSZEE. The consequence indicated that the diaphragm’s in-plane stiffness was significantly lower than the provision in FEMA273 but higher than ASCE 41-06 and NSZEE, however, it was more close to ASCE 41-06. What’s more, its strength and ductility both exceeded the recommendation of all of these standards.
关键词
轻型钢木混合楼盖 /
平面内刚度 /
水平荷载分配 /
剪切变形
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Key words
light wood-steel hybrid diaphragm /
in-plane stiffness /
horizontal load distribution /
shear deformation
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马仲 何敏娟 马人乐.
轻型钢木混合楼盖水平抗侧性能试验[J]. 振动与冲击, 2014, 33(18): 90-95
MA Zhong HE Minjuan MA Renle.
Experiment of Light Wood-steel Hybrid Diaphragm’s Racking Performance[J]. Journal of Vibration and Shock, 2014, 33(18): 90-95
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