现浇楼板对钢筋混凝土框架结构抗震性能的影响

The Impact of Seismic Performance of Cast-in Slab to Reinforced Concrete Frame Structure

本文通过PKPM结构计算软件建模并求得配筋,通过改变楼板厚度来分析在梁的每侧不同板翼缘宽度的情况下现浇楼板对于梁端承载力和柱端承载力的影响,进而分析是否会发生"强梁弱柱"这种破坏机制.结果表明,边节点和中节点的梁端承载力会随着梁的每侧板翼缘宽度的增加而增加,并且随着现浇楼板厚度的增大,梁端承载力增加的幅度也会增大.但是,由于边节点柱是构造配筋,柱的承载力会提高很多,所以不会发生"强梁弱柱"这种破坏机制,而中节点在考虑现浇楼板对梁端承载力影响的情况下则会发生"强梁弱柱"这种破坏机制.

This paper gets the building model and the result of reinforcement by the softmare called PKPM and analyzes the impact of cast - in slab on bear capacity of beam and column under the different width of slab flange on each side of beam by change the thickness of slab, then weak column＂. The result of analysis indicates that the be increase with the increasing width of slab flange analyzes whether the failure mechanism of ＂strong beam and bear capacity of beam on the side joint and the midjoint will on each side of beam, the degree of increasing the bear capacity of beam will be increase with the increasing thichness of cast - in slab. But the column on the side joint have struc- tural reinforcement, the bear capacity of column can be increase a lot , so the failure mechanism of ＂strong beam and weak column＂ can not happen, however, the failure mechanism of ＂strong beam and weak column＂ maybe happen on the midjoint when we consider the impact of cast - in slab on bear capacity of bear.