【摘要】 对一个具有完整边界条件的轻钢龙骨体系房屋足尺模型进行了低周反复试验。试验主要考虑转角墙对轻钢龙骨体系房屋抗震性能的影响,以及龙骨壁厚对复合承载墙体破坏模式的影响,研究房屋在低周反复荷载作用下的变形过程、破坏特征和滞回性能等。试验结果表明:轻钢龙骨房屋的抗震性能与自攻螺钉连接性能密切相关。自攻螺钉的连接性能决定了轻钢龙骨房屋的耗能机制、耗能能力以及破坏形态。由于螺钉在该结构中分布广泛,使得结构的侧向变形能力和耗能能力较好,同时,试验验证了轻钢龙骨复合墙体抗剪承载力计算时关于自攻螺钉连接受力方向的假设和受力大小分析结果的正确性。更多还原

【Abstract】 The paper presents a reversed cyclic loading test on a full-size light-gauge steel framed specimen with full boundary conditions.The test mainly considers the influence of corner wall on seismic performance of light-gauge steel framed residences and the influence of stud thickness on failure modes of composite walls.The paper studies the specimen’s distortion process,failure modes and hysteretic performance.The results show that: the seismic behavior of light gauge steel framed structure is closely related to the performance of screw connections,which decide its energy dissipation capacity and failure modes.Because of wide distribution of screw,the structure shows good lateral distortion and energy dissipation capacities.The test also verifies the correctness of the assumption about directions and distributions of sheathing fastener forces used in shear strength of light-gauge steel framed composite walls.更多还原