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钢筋混凝土框架柱作为高层房屋建筑的主要承重构件,在历次地震中因框架脆性剪切破坏而造成结构严重损坏甚至倒塌的现象十分常见。本文通过分析有关试验资料,提出了钢筋混凝土框架柱塑性铰区剪切强度的计算公式及有关构造措施,以保证框架柱在一定延性条件下具有足够的抗剪强度,实现“强剪弱弯”的抗震设计原则,使抗震设计的框架结构具有足够的强度和良好的延性,以配合混凝土结构设计规范(GBJ10-89)的修订工作。本文的主要结论已被规范(GBJ10-2000)修订所采纳。
As the main load-bearing component of high-rise building, reinforced concrete frame column is very common because of brittle shear failure of the frame caused by serious frangibility or even collapse of the structure in all previous earthquakes. In this paper, by analyzing the test data, the formula for calculating the shear strength of the plastic hinges in the reinforced concrete frame columns and related structural measures are proposed to ensure that the frame columns have enough shear strength under a certain ductility condition to achieve “strong shear weak bending” The seismic design principle, so that the seismic design of the frame structure with sufficient strength and good ductility to meet the concrete structure design specifications (GBJ10-89) revision. The main conclusions of this paper have been adopted by the specification (GBJ10-2000).