传统框架及楼板局部设缝框架“强柱弱梁”实现综述

框架结构实现"强柱弱梁"是抗震的目标之一,本文针对框架结构抗震性能的研究现状进行了详细阐述,表明现浇楼板及板内纵筋对框架梁端实际抗弯承载力的贡献不可忽略,导致框架结构形成"强梁弱柱"的柱铰屈服机制。进而介绍了楼板局部设缝框架结构,即在框架梁端塑性铰范围的侧向楼板内设置贯穿板厚的通缝,以消除现浇楼板及纵筋对梁端抗弯承载力的贡献,实现"强柱弱梁"的屈服机制。

For frame structure to achieve'strong column- weak beam'is one of seismic goals. In this paper,the research status of seismic performance of frame structure was described in detail. It shows that the contribution of cast- in-place floor slab to the bearing capacity of the frame beam ends cannot be ignored,which lead to the framework generate the'strong beam- weak column'yielding mechanism. And then,the frame structure with local slot in floorslab has been introduced,that the straight slots penetrating slab thickness in floorslab may be designed along plastic hinges range of frame beam ends to eliminate the contribution of in- situ- floorslab and its longitudinal reinforcement on the flexural capacity of beam ends,and to achieve the'strong column- weak beam'yielding mechanism.