[1]李会知,刘敏珊,陈淮..一次超静定梁的弹塑性全过程分析[J].郑州大学学报(工学版),2006,27(02):40-44.[doi:10.3969/j.issn.1671-6833.2006.02.010]
　Lee Huizhi,LIU Minshan,Chen Huai.An analysis of the whole process of elastoplastic properties of superstatically fixed beams[J].Journal of Zhengzhou University (Engineering Science),2006,27(02):40-44.[doi:10.3969/j.issn.1671-6833.2006.02.010]

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一次超静定梁的弹塑性全过程分析()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

27卷

期数:

2006年02期

页码:

40-44

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

An analysis of the whole process of elastoplastic properties of superstatically fixed beams

作者:

李会知; 刘敏珊; 陈淮.

郑州大学土木工程学院,河南,郑州,450002, 郑州大学热能工程中心,河南,郑州,450002

Author(s):

Lee Huizhi; LIU Minshan; Chen Huai

关键词:

超静定梁;  弹塑性;  单位荷载法;  塑性铰;  集中荷载

Keywords:

Super static fixed beam;  elastoplasticity;  Unit load method;  Plastic hinges;  Concentrated loads

DOI:

10.3969/j.issn.1671-6833.2006.02.010

文献标志码:

A

摘要:

通过虚功原理和单位荷载法分析了集中荷载作用下一次超静定梁的弹塑性加载及变形过程.受力变形可分为4个阶段:弹性阶段;固支端附近产生塑性变形阶段;固支端附近和集中荷载作用点附近均产生塑性变形阶段;固支端保持为塑性铰,集中荷载作用点附近塑性区扩展而固支端附近塑性区卸载阶段.给出了加载各阶段的弯矩、位移公式及外荷载与支反力的关系式,可供工程结构设计.

Abstract:

The elastoplastic loading and deformation process of the next superstatic fixed beam under concentrated load is analyzed by the virtual work principle and unit load method. The force deformation can be divided into 4 stages: elastic stage; Plastic deformation stage near the solid branch; Plastic deformation stages occur near the solid branch end and near the concentrated load action point; The solid end is maintained as a plastic hinge, and the plastic zone near the concentrated load action point expands and the plastic zone near the solid support end is unloaded. The bending moment, displacement formula and the relationship between external load and support reaction force at each stage of loading are given, which can be used for engineering structure design.

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