有无填充墙的矩形钢管混凝土框架结构抗震性能对比试验

目的对比分析有无填充墙的矩形钢管混凝土框架的抗震及其受力性能，为框架的抗震应用提供理论依据和技术支持．方法对矩形钢管混凝土框架在水平方向上施加低周反复荷载，竖直方向上施加恒定的竖向荷载，以柱的含钢率作为对比分析指标进行试验研究．结果对于有无填充墙的矩形钢管混凝土框架结构体系，前者的承载能力明显优于后者．无填充墙的框架结构的延性系数在5．56～6．80，延性满足抗震要求；而带填充墙的框架结构变形能力稍弱，延性系数在4．07—4．27，但其破坏过程总体比较缓和，也满足延性框架位移延性系数大于4．0的要求．结论有填充墙的矩形钢管混凝土框架结构的抗震性能较好，实际工程应用中，应充分发挥填充墙的作用．

Contrast Experiments of Seismic Behavior for Concrete Filled RHS Frames with and without In- Filled Wall

To give theoretical references and technical supports for seismic application of frameworks, seismic behaviors and mechanical properties of concrete filled RHS frames with and without in-filled wall are experi- mentally studied. Exerting vertical loads and lateral cyclic loads and applying the inclusive steel ratio of the column section as a contrast analysis index, contrast experiments are conducted. It is found that, for systems of concrete filled RHS frames with and without in-filled wall, the bearing capacity of the former is clearly superior to the latter. Ductility coefficients of the concrete filled RHS frames without in-filled wall are 5.56 - 6. 80 that satisfy the seismic requirements. Ductility coefficients of the concrete filled RHS frames with infilled wall are 4. 07 -4. 27, which is indicated the deformation of concrete filled RHS frames with infilled wall is a little weak, but the damage process is overall moderate. They also meet the requirement that the frame displacement ductility coefficient must be larger than 4.0. Results show that the seismic perform- ance of concrete filled RHS frames with the in-filled wall is more efferent and should be fully used in practi- cal engineering applications.