江苏理工学院学报2024，Vol.30Issue(6) ：41-50.

基于板-梁理论的UHPC预应力双T薄壁截面梁弯扭屈曲理论与有限元验证

Flexural buckling theory and finite element verification of UHPC prestressed double T-section thin-wall beam based on plate-beam theory

张文福 李沈杰 曹石 江杨
江苏理工学院学报2024，Vol.30Issue(6) ：41-50.
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  • 维普
  • 万方数据

基于板-梁理论的UHPC预应力双T薄壁截面梁弯扭屈曲理论与有限元验证

Flexural buckling theory and finite element verification of UHPC prestressed double T-section thin-wall beam based on plate-beam theory

张文福 1李沈杰 2曹石 3江杨2
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作者信息

  • 1. 安徽建筑大学土木工程学院,安徽 合肥 230000;南京工程学院 建筑工程学院,江苏南京 211167
  • 2. 安徽建筑大学土木工程学院,安徽 合肥 230000
  • 3. 南京工程学院 建筑工程学院,江苏南京 211167
  • 折叠

摘要

当前,针对预应力双T开口截面的理论研究较少.以预应力高强混凝土(Ultra-High Performance Concrete,UHPC)双T截面梁为研究对象,基于"板-梁"理论和变形分解原理对梁的弯扭屈曲进行研究,通过推导得到弯扭屈曲下的总势能方程,并通过最小势能原理给出组合扭转的弯扭屈曲解析解.借助ANSYS软件对所求得的解进行正确性判定,分析有限元计算的结果.结果表明:所得的弯扭屈曲解析解与有限元结果吻合度较好,误差范围在-0.50％～1.44％.

Abstract

At present,there are fewer theoretical studies on prestressed double T openings.Based on the theory of"plate-beam"and the principle of deformation decomposition,the flexural and torsional buckling of prestressed UHPC double T section beam is studied.The total potential energy equation under flexural and torsional buckling is derived,and the analytical solution of flexural and torsional buckling is given based on the principle of minimum potential energy.The correctness of the obtained solution is determined by ANSYS software,and the result of finite element calculation is analyzed.The results show that the analytical solution of flexural and torsional buckling is in good agreement with the finite element results,and the error is within-0.50％～1.44％.

关键词

双T截面/弯扭屈曲理论/板-梁理论/有限元

Key words

double T section/flexural and torsional buckling theory/plate-beam theory/finite element

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出版年

2024
江苏理工学院学报
江苏技术师范学院

江苏理工学院学报

CHSSCD
影响因子：0.369
ISSN：2095-7394
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