框格形式影响组合墙加固框架抗震性能试验
Seismic Performance Experiment of Frame Strengthened by Composite Walls with Different Grid Forms

为了研究框格形式对加气混凝土砌块组合墙加固框架抗震性能的影响，对1∶2比例的2肋梁3肋柱组合墙加固框架与2肋梁5肋柱组合墙加固框架试件进行了低周反复荷载试验，分析了试件的破坏过程和破坏特点，对比了试件在承载能力、刚度、耗能等抗震性能方面的差异。结果表明：框格形式与其内部砌块布置方式均对组合墙加固框架的抗震性能起着重要作用；虽然5肋柱试件肋柱数量较多，但由于砌块布置不尽合理，其承载力提高程度不大，受力过程前段的刚度反而较砌块布置合理的3肋柱试件低；增加肋柱数量可以提高组合墙加固框架的抗震性能，但需要以合理砌块布置方式为前提才能更好发挥其优势。
In order to study the influence of grid forms on the seismic performance of frame strengthened by composite walls of autoclaved aerated concrete blocks, 1∶2 scale models of the strengthened specimens with 2-rib beams 3-rib columns and 2-rib beams 5-rib columns were tested under low-frequency cyclic loading. The failure process and characteristics of specimens were analyzed, and the seismic performance difference between the two specimens, such as bearing capacity, stiffness and energy dissipation, were compared. The results show that both the grid forms and the layout of the blocks play important roles in seismic performance of the frame strengthened by composite wall. Though the number of 5-rib columns specimen is more, but the layout of blocks is unreasonable, so the improvement of bearing capacity is relatively small and the stiffness in the forepart is lower than that of the 3-rib columns specimen with reasonable layout of blocks. The seismic performance can be improved by adding the number of rib columns and it will be working better combining with reasonable layout of blocks