华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (3): 94-99.

• 环境科学与技术 • 上一篇    下一篇

地震作用下RC 框架结构位移反应的近似计算

周靖1 蔡健1 方小丹2   

  1. 1.华南理工大学 建筑学院,广东 广州 510640; 2. 华南理工大学 建筑设计研究院,广东 广州 510640
  • 收稿日期:2006-04-03 出版日期:2007-03-25 发布日期:2007-03-25
  • 通信作者: 周靖(1974-),男,博士生,主要从事钢筋混凝土结构抗震设计理论的研究. E-mail:jingzhchina@163.com
  • 作者简介:周靖(1974-),男,博士生,主要从事钢筋混凝土结构抗震设计理论的研究.
  • 基金资助:

    科技部重大基础研究前期研究专项课题(2004CCA03300)

Approximate Calculation of Seismic Displacement Response for RC Frame Structure

Zhou JingCai JianFang Xiao-dan2   

  1. 1. School of Architecture and Civil Engineering , South China Univ. ofTech. , Guangzhou 510640 , Guangdong , China;2. Architecture Design and Research Institute , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-04-03 Online:2007-03-25 Published:2007-03-25
  • Contact: 周靖(1974-),男,博士生,主要从事钢筋混凝土结构抗震设计理论的研究. E-mail:jingzhchina@163.com
  • About author:周靖(1974-),男,博士生,主要从事钢筋混凝土结构抗震设计理论的研究.
  • Supported by:

    科技部重大基础研究前期研究专项课题(2004CCA03300)

摘要: 假定钢筋混凝土框架结构为理想剪切型和弯曲型结构的组合,采用一般形式的等效静力荷载分布模式推导了框架的弹性侧向位移分布模式,并讨论了弯剪强度比率、荷载分布模式对位移反应的影响;通过假定结构的第一振型矢量模式,应用位移反应谱提出了计算地震弹性位移反应的方法,并分析了楼层位移和层间位移角沿高度的变化规律;采用弹塑性位移增大系数增大弹性位移的方法估算了最大弹塑性层间位移,并用数值算例验证了简单估算方法的有效性.

关键词: 钢筋混凝土, 框架结构, 住移反应, 荷载, 侧向位移, 分布模式

Abstract:

The distribution mode of lateral displacement of reinforced concrete (RC) frame structure is first deduced by taking the structure as the combination of an ideal shear-type structure and an ideal flexural-type struc-ture and by adopting a general equivalent static load distribution mode. Next , the effects of shear to flexural ratio and loading distribution mode on the displacement response are discussed. Then , by predicting the first mode shape , a method to calculate the seismic elastic displacement response of the structure is proposed according to the displacement response spectrum. Moreover, the variations of displacement response and inter-storey drift ratio with the height are analyzed , and the maximal seismic inelastic displacement is also evaluated by the inelastic inter-storey displacement amplification factor. A numerical example is finally presented to verify the effectiveness of the proposed simplified method.

Key words: reinforced concrete, frame structure, displacement response, load, lateral displacement, distributionmode