(苏州九城都市建筑设计有限公司，苏州 215000)

［摘要］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。

［关键词］钢筋混凝土；细长柱；中震弹性；二阶效应

中图分类号：TU375文献标识码：A文章编号：1002-848X(2011)05-0089-04

Study on several questions of reinforcement concrete slender columns under elastic moderate seismic loading

Shi Libin(Suzhou Jiucheng Dushi Architecture Design Co., Ltd., Suzhou 215000, China)

Abstract:Based on the teaching building of the Professional Technology College located in Suzhou Industrial Estate, the reinforcements of slender column under the elastic moderate seismic loading were compared which considered second-order effect by two analysis methods, curve fitting formulas and the η-l0 method. The second-order effect deformation curve was calculated by the displacements of slender columns under the elastic moderate seismic loading. Maximum curvature and the effects of P-Δ and P-δ were calculated. According to above-mentioned studies, dynamic and deformation characteristics were discussed and it would be reference in the design and study on seismic behavior of the similar projects.

Keywords:reinforcement concrete; slender column; elastic moderate seismic loading; secondorder effect

作者简介：石立彬，工程硕士，一级注册结构工程师，Email：shilibin1124@hotmail.com。

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