横向集中荷载下桥梁承压杆件弹塑性失稳的简化模型

重庆交通大学学报（自然科学版） ›› 2001, Vol. ›› Issue (S1): 23-25.

横向集中荷载下桥梁承压杆件弹塑性失稳的简化模型

彭凯¹,肖盛燮¹,施尚伟¹,吴王武²

1.重庆交通学院桥梁及结构工程系重庆400074;2.重庆交通学院河海建筑工程系重庆400074

收稿日期:2001-06-02 出版日期:2001-12-31 发布日期:2016-07-12
基金资助:
国家自然科学基金资助项目(59878057)

Simplified analysis on elasto-plastic instability of bridges’ compression members under concentrated transverse loads

PENG Kai ¹, XIAO Sheng xie ¹,SHI Shang wei ¹,WUWu ²

1. Bridge & Structure Engineering Department,Chongqing Jiaotong University,Chongqing 400074,China;2.Department of River & Ocean Engeering,Chongqing Jiaotong University,Chongqing 400074,

Received:2001-06-02 Online:2001-12-31 Published:2016-07-12

摘要/Abstract

摘要： 借助中心压杆弹塑性失稳的山雷 (Shanley)理论,利用静力平衡条件,针对桥梁结构中各型承压杆件在横桥向集中荷载作用下的梁柱力学行为进行了建模分析,提出了横向临界力概念,探讨了横向集中荷载最不利作用位置的确定方法

关键词: 梁柱, 弹塑性失稳, 横向临界力

Abstract: A general static model of the bridges compression members under concentrated transverse loads is set up in simulation of the simple model supporting the Shanley Theory which can satisfactorily explain the behavior of the axially loaded compression member in elasto plastic instability.The analysis based on the model gives the new concept of critical transverse loads as well as the worst acting location of the transverse loads.

Key words: beam column, elasto plastic instability, critical transverse loads

中图分类号:

U441

彭凯,肖盛燮,施尚伟,吴王武. 横向集中荷载下桥梁承压杆件弹塑性失稳的简化模型[J]. 重庆交通大学学报（自然科学版）, 2001, (S1): 23-25.

PENG Kai , XIAO Sheng xie ,SHI Shang wei ,WUWu. Simplified analysis on elasto-plastic instability of bridges’ compression members under concentrated transverse loads[J]. Journal of Chongqing Jiaotong University(Natural Science), 2001, (S1): 23-25.

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