边梁对板柱结构侧向刚度影响的研究

Study on Influence of Spandrel Beam on Lateral Stiffness of Flat Plate Structures

板柱结构的周边布置边梁可以提高结构的抗震性能。采用等代框架法分析带边梁的板柱结构发现,边梁的抗扭刚度对内框架的侧向刚度影响较小。在边框架中,等代梁的抗弯刚度比边梁的抗弯刚度大,影响因素有板与边梁的抗弯刚度比、受扭构件与板抗弯刚度的比等,给出了边梁抗弯刚度增大系数的计算方法。

The seismic performance of flat plate structure can be improved by the spandrel beam. The equivalent frame method is used to analyze the flat plate structure with spandrel beam. The results show that the lateral stiffness of the inner frame is affected little by the torsional stiffness of the spandrel beam. For the side frame, the flexural stiffness of equivalent beam is larger than that of the spandrel beam, and the affected factors are the ratio of the flexural stiffness of the plate to that of the spandrel beam and the torsional members to that of the plate. The calculation method of amplification coefficient is given.