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对不同梁高的特殊抗弯框架抗震性能的差异进行研究,主要考虑节点构造的影响。对由连续板组成的节点进行研究,如直板、斜板、盖板、法兰及扁梁一侧加腋节点,这种节点能替代扁梁或深梁与柱的连接节点。在实际工程中,这种节点构造经常出现,但规范没有考虑这种情况。为了研究采用这种节点构造的框架的抗震性能,进行6个足尺试验。分析节点构造对结构破坏的影响,并进行对比分析。试验及分析结果表明:结构在强度退化20%之前,层间侧移比至少达到4%～6%。通过混和使用法兰和加腋节点,可消除大多数节点构造中都可能发生的深梁下翼缘的裂缝开展。
The research on the difference of seismic behavior of special flexural frames with different beam heights, mainly considers the influence of the structure of the joints. Research on nodes consisting of continuous slabs, such as straight slab, sloping slab, cover plate, flange and flank beam plus axillary node, can replace the connection of flat beam or deep beam with column. In practical engineering, this node structure often appear, but the specification did not consider this situation. In order to study the seismic behavior of frames constructed with this kind of nodes, six full-scale tests were conducted. The effect of node structure on structural damage is analyzed and compared. The results of the tests and analyzes show that the structure has a lateral slip ratio of at least 4% to 6% before the strength is reduced by 20%. By blending flanges and axillae nodes, the cracking of the lower flange of the deep girder, which may occur in most node configurations, can be eliminated.