钢梁混凝土柱节点中梁贯穿与柱贯穿节点受力性能对比

Analysis on the behavior of beam-penetration and column-penetration joints composed by concrete column and steel beam

通过钢梁与混凝土柱节点中梁贯穿节点与柱贯穿节点两组节点共6个试件低周反复荷载试验对比,分析了不同节点连接方式下节点开裂、极限荷载、位移、刚度、耗能能力等性能。结果表明,梁贯穿节点破坏主要发生在钢梁根部翼缘及腹板,而柱贯穿节点的破坏主要发生在钢梁与锚板间的焊缝处,由于核芯区有腹板和翼缘穿过,梁贯穿节点在受力性能方面优于柱贯穿节点。梁贯穿节点的抗震能力略大于普通混凝土节点,柱贯穿节点与普通混凝土节点抗震能力对比有待于进一步研究。

Low-cycle loading experiments were conducted on joints which steel beam penetrated concrete column, and which the flange and web of steel beam was connected to concrete column by anchor slab, including six specimen of two groups joints. Cracks load, ultimate load,displacement, stiffness, energy dissipation capacity of joints between different connection patterns were compared. The results show that the failure of joints of beam-penetration occur in steel beam-end flange and web, the failure of joints column- penetration occur in weld between steel beam and anchor slab. Because of web and flange in core zone, the mechanical behavior on joints of beam-penetration is better than that of column-penetration. The seismic capacity of joints of beam-penetration is a little better than that of common concrete, and the seismic capacity of joints need further research between column-penetration and common concrete.