采用钢筋砼扁梁结构是一种降低高层建筑层高的有效途径。由于梁宽大于柱宽,因此其梁柱节点的抗震性能较为复杂。为解决这类结构的设计问题,本文通过5个中柱扁梁节点和2个边柱扁梁节点在低周反复荷载下的试验以及3根约束扁梁在弯、剪静力荷载下的试验,基本摸清了扁梁结构的静力性能及抗震性能。根据受力特征和破坏形态的机理分析,提出了扁梁结构的实用强度计算方法及有效的配筋构造措施。 The use of reinforced concrete flat beam structure is an effective way to reduce the height of high-rise buildings. Because the beam width is larger than the column width, the seismic performance of the beam-column joint is more complicated. In order to solve the design problem of this kind of structure, this paper passes the test of five mid-columna flat beam nodes and two side-column flat beam joints under low cyclic reversed loading and three confined flat beams under bending and shear static loads. Basically, the static performance and seismic performance of the flat beam structure are clearly understood. Based on the mechanism analysis of the force characteristics and failure modes, a practical strength calculation method for the flat beam structure and an effective reinforcing structure measure are proposed.