叠合框架顶层过节点负弯矩钢筋锚固性能研究

框架顶层边节点因轴力甚小，受力情况与其它各层节点不同．目前对叠合框架顶层边节点的钢筋锚固问题尚未进行完整的试验研究．木文通过对叠合框架及整浇框架的边节点试验，对节点区的受力性能作了一些探讨，并提出了梁负弯矩钢筋在节点内的锚固方案及相应的构造措施．

Investigation of Anchorage Behaviour of Steel Bars Subjected to Negative Moment of Composite Frams at Corners and Joints

As the axial forces of frames at corners are rather small,the mechanic properties of the frames are different from other joints.Anchorage methods of steel bars of composite beams have not been completely studied nor have they been specified in "Concrete Design Code"(GBJ10-89).Based on the test of the mechanical properties of corners and joints of composite beams,the authors have made an investigation of these properties.Furthermore,the anchorage plan and construction methods of steel bars subjected to negative moment at corners and joints have been proposed.