[提要]  就两个不同梁柱刚度比、内置实腹I字钢的钢骨高强混凝土(>C75)梁柱十字节点试件分别进行了低周反复加载试验，就高强混凝土的作用，型钢腹板、箍筋、翼缘框等对节点的抗剪能力贡献进行了分析，对不同梁柱刚度比的抗剪能力做了对比，并提出了这种结构的节点抗剪承载力公式。
[关键词] 钢骨高强混凝土 十字节点 抗剪

The tests of two steel reinforced high strength concrete(>C75)  beam-column joints under the cyclic re-
versed loading have been carried out, which vary in the stiffness ratio of beam to column. Shear effect of each part that consists of joint core including high strength concrete, steel web, band and flange frame is analyzed in detail.  Shear capacity of joints with different stiffness ratio of beam to column is compared as well. As a result, an equation calculating shear capacity of such joint is proposed.
Keywords: steel reinforced high strength concrete; joint; shear capcity