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以苏州工业园区职业技术学院新校区教学楼为背景,首先采用两种可以考虑二阶效应影响的计算方法以及拟合公式分别计算在中震弹性作用下细长柱的配筋,并和η-l0计算法的结果进行比较。以细长框架柱在地震作用下的位移作为已知条件,求出细长柱的二阶效应变形曲线,再分别求出曲线的最大曲率和P-Δ,P-δ效应值。通过上述分析探讨钢筋混凝土细长柱在地震作用下的受力特征及变形特点,为类似结构的设计及抗震分析提供参考依据。
Taking the teaching building of the new campus of Suzhou Industrial Park Vocational and Technical College as the background, two kinds of reinforcement columns for slender columns subjected to moderate elastic earthquake are first calculated by using two calculation methods that can consider the influence of second-order effect and the fitting formulas. l0 calculation results for comparison. Taking the displacement of the slender frame column under the action of earthquake as the known condition, the second-order deformation curves of the slender columns are obtained. The maximum curvature and the P-Δ and P-δ effects of the slender columns are obtained respectively. Through the above analysis, the stress characteristics and deformation characteristics of reinforced concrete slender columns under earthquake action are discussed, which can provide references for the design of similar structures and seismic analysis.