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板柱结构是一种经常被采用的结构体系,它具有不少优点,如施工支模及绑扎钢筋较简单,结构本身高度较小,可以减少建筑物的层高,从而降低建筑物的造价等等,但由于此种结构在遭受较强地震作用时,其板柱节点的抗震性能不如有梁的梁柱节点,此外,地震作用产生的不平衡弯矩要由板柱节点传递,它在柱周边将产生较大的附加应力,当剪应力很大而又缺乏有效的抗剪措施时,有可能发生冲切破坏,甚至导致结构的连续破坏。因此,新的抗震规范对于板柱—抗震墙结构的适用高度,作了较严格的规定。但是,实际工程中,对于板柱结构还是有大量要求的,现提供一些措施,使板柱结构可以建筑得更高一些,以满足实际需求。
Plate column structure is a commonly used structural system, which has many advantages, such as the construction of molds and binding steel bars is relatively simple, the height of the structure itself is small, can reduce the height of the building, thereby reducing the cost of the building, etc. However, the seismic behavior of the slab node is not as good as that of the beam-column node because of the strong earthquake action. In addition, the unbalanced moment generated by the earthquake action is transmitted by the slab node. Peripheral will have greater additional stress, when the shear stress is large and the lack of effective shear measures, there may be punching failure, and even lead to the continuous destruction of the structure. Therefore, the new seismic code for slab column - the application of anti-seismic wall height, made more stringent requirements. However, in actual engineering, there are still a lot of requirements for the slab structure, and some measures are provided to enable the slab structure to be constructed higher to meet the actual needs.