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型钢高强高性能混凝土组合结构刚度大、承载力高,该结构充分发挥了混凝土材料的高抗压强度、高耐久性和优良工作特性的优点,其内置型钢可以明显地改善高强高性能混凝土脆性破坏的特征。采用MTS伺服加载系统进行了一榀两跨三层型钢高强高性能混凝土框架结构的拟静力试验研究,观测了在低周反复荷载作用下型钢高强高性能混凝土框架结构的裂缝开展和破坏模式,并分析了结构的力学特性,得到了在循环荷载作用下框架结构的荷载-位移滞回曲线,给出了型钢高强高性能混凝土框架结构的水平承载能力、变形、刚度和耗能等抗震特性参数的取值,对承载力和刚度的衰减规律进行了分析。研究结果显示型钢高强高性能混凝土框架结构具有良好的抗震性能,该研究可为型钢高强高性能混凝土框架结构的工程应用提供设计参考。
High-strength steel and high-performance structural steel composite structures with high stiffness and high bearing capacity, the structure give full play to the high compressive strength of concrete materials, high durability and excellent working characteristics of the advantages of its built-in steel can significantly improve the high-strength high-performance concrete brittle failure Characteristics. The pseudo-static test of one-two-span three-story steel reinforced high-performance concrete frame with MTS servo loading system was carried out. The crack initiation and failure mode of the high-strength and high-performance concrete frame structure under the action of low cycle and repeated loading were observed. And the mechanical characteristics of the structure are analyzed. The load-displacement hysteresis curve of the frame structure under cyclic loading is obtained. The seismic performance parameters such as horizontal bearing capacity, deformation, stiffness and energy dissipation of the high-strength high-performance concrete frame structure are given The value of the bearing capacity and stiffness attenuation of the law were analyzed. The results show that the high strength and high performance steel reinforced concrete frame structure has good seismic performance. This research can provide reference for engineering application of high strength and high performance steel frame structure.