论文部分内容阅读
为研究屈曲约束支撑钢筋混凝土框架结构的抗震性能,对安装和不安装屈曲约束支撑的两榀三层两跨的钢筋混凝土框架进行拟静力试验研究,对比有控框架与无控框架的试验结果。结果表明,安装屈曲约束支撑后,钢筋混凝土框架结构的屈服荷载提高了约1倍,极限承载力提高了约0.75倍,初始刚度和耗能能力提高了近2.5倍,框架滞回曲线更饱满,有更好的抗侧移能力,有效控制了节点区域的裂缝发展。由此可见,钢筋混凝土框架结构的承载能力、变形能力、耗能能力、刚度及破坏形态等各项抗震性能均得到显著提升。为使屈曲约束支撑更好地发挥其性能,应保证其与框架连接部分的可靠性,避免平面外失稳。
In order to study the seismic behavior of reinforced concrete frame structures under buckling restraint, the quasi-static tests on two-story, three-story and two-span RC frames with and without buckling restraint are carried out. The results of tests comparing controlled and unmanaged frames . The results show that the yield load of RC frame structure is increased by about 1 times, the ultimate bearing capacity is increased by about 0.75 times, the initial stiffness and energy dissipation capacity are increased by 2.5 times, and the hysteresis curve is more full, Have better anti-migration ability, effectively control the crack growth in the node area. It can be seen that the seismic performance of reinforced concrete frame structures such as bearing capacity, deformation capacity, energy consumption capacity, stiffness and failure modes have been significantly improved. In order to make buckling restraint support to better play its performance, should ensure the reliability of its connection with the frame, to avoid out-of-plane instability.