新型轻钢加层节点累积耗能性能试验研究

为了研究轻钢加层节点的累积耗能性能，设计制作了4种不同形式的轻钢结构加层节点．分别对其进行拟静力试验，并分析其破坏现象、滞回性能、强度退化及累积塑性变形率．结果表明：与传统植筋节点相比，3个新型节点均能有效控制结构裂缝的开展，外包钢强化节点延缓节点承栽力的降低最有效；外包钢强化节点的累积耗能能力提高了115％，碳纤维强化节点和连接形式转化节点的累积耗能能力提高30％左右．

Experimental Study on Accumulative Energy Dissipation of New-type Joints in Light Steel Adding Storey

In order to study the accumulative energy dissipation of joints in light steel adding storey, four different types of nodes were tested under pseudo-static test, in which failure phenomenon, hysteretic behaviors, strength deterioration, and accumulate plastic deformation rate were analyzed. In contrast with the traditional plant steel node, the results showed that： three new types of nodes can slow down the cracks＇ development; the steel plate strengthening node can delay nodes＇ strength deterioration; the steel plate strengthening node＇s accumulative energy dissipation capacity can be raised by 115 per cent, but for the node strengthened with CFRP and the node transformed in connection form, their accumulative energy dissipation capacity are improved by 30 per cent.