钢骨高强混凝土框架边节点损伤分析

在试验的基础上,通过考虑影响损伤的因素,确定损伤变量和损伤模型,建立了一种适合低周期反复荷载作用下的钢骨高强混凝土柱/钢筋高强混凝土梁框架边节点的损伤模型,分析了在反复荷载作用下的损伤发展的不同阶段及特点,并对其损伤与位移的相关关系进行了分析·结果表明,在其他情况相同时轴压比越大的节点其损伤值也越大,延性略差;核心区配箍率越小的节点其损伤值越大,延性略差;含钢率增加的情况下,其损伤值是降低的,但延性更好·

Damage Analysis of Side Joints of HSRC Frame

Based on tests, the influencing factors on the damage as shown in the topic were considered to ascertain the damage variable and damage model which is adaptable to the side joints of HSRC column/HRC beam under low cycle repeated load. The different phases of damage growth and their features were analyzed under the cyclic earthquake load, as well as the relation of damage to displacement. The result showed that the damage level of joints with increasing axial compression ratio, and the smaller the rate of stirrup used in core area is, the higher the damage level of joints rise but the ductility decreases slightly will be with ductility decreased slightly. On the contrary, the damage level of joints lowers but the ductility increases.