中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 1997, Vol. 16 ›› Issue (3): 29-34.

• • 上一篇    下一篇

预应力对杆件稳定性效应的研究

李克非, 杜国华   

  1. 上海:同济大学桥梁工程系 200092
  • 收稿日期:1996-08-14 出版日期:1997-06-23 发布日期:2016-11-14
  • 作者简介:李克非,男,1972年生,博士生

Study on the Effects of Prestress on the Stability of Members

Li Kefei, Du Guohua   

  1. Department of Bridge Engineering, Tongji University, Shanghai 200092
  • Received:1996-08-14 Online:1997-06-23 Published:2016-11-14

摘要: 基于有限位移理论的虚功原理,通过理论分析和对典型结构的分析,得到了预应力砼杆件的临界荷载.讨论了预应力、截面配筋率和偏心距对杆件临界荷载的影响.提出了预应力在单个构件和复杂杆系结构稳定问题分析中的处理方法.

关键词: 有限位移, 临界荷载, 初应力, 总势能, 预应力

Abstract: In this paper, based on the principle of virtual work of finite displacement theory, the critical loads of members with prestress are developed by the analysis of several typical structures. These results make clear the influence of prestress on the critical loads.Meanwhile, a method of dealing with prestress is given, with its application to the stability analysis of structural engineering.

Key words: stability, critical load, finite displacement theory, initial stress, prestress