实腹式配钢L形截面异形柱轴心受压承载力分析

张爱林; 武保焕; 刘学春

doi:10.13204/j.gyjzG20032801

实腹式配钢L形截面异形柱轴心受压承载力分析

doi: 10.13204/j.gyjzG20032801

北京工业大学北京市高层和大跨度预应力钢结构工程技术研究中心, 北京 100124

基金项目:

国家重点研发计划项目（2016YFC0701100）；国家自然科学基金项目（51978013）。

详细信息

作者简介:
张爱林,男,1961年出生,教授,博士生导师。

通讯作者:
刘学春,男,1974年出生,教授,博士生导师,liuxuechun@bjut.edu.cn。

计量
- 文章访问数: 99
- HTML全文浏览量: 18
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2020-03-28
- 网络出版日期: 2021-10-27

BEARING CAPACITY ANALYSIS OF L-SHAPED STEEL SPECIAL-SHAPED COLUMN WRAPPED WITH CONCRETE UNDER AXIAL COMPRESSION

Beijing Engineering Research Center of High-Rise and Large-Span Prestressed Steel Structure, Beijing 100124, China

摘要

摘要: 为研究实腹式配钢L形截面异形柱的型钢强度、混凝土强度、型钢翼缘厚度、型钢腹板厚度、柱高、栓钉及箍筋间距等关键参数对异形柱承载能力和破坏形式的影响，共设计5组对比构件进行轴心受压有限元模拟分析。获得异形柱破坏模式、荷载-位移曲线、各组成部分应力分布等，分析异形柱轴心受压性能。结果表明实腹式配钢L形截面异形柱构件构造合理；随着型钢强度、配钢率和混凝土强度的增大，承载力逐渐上升；当柱高范围为3~5 m时，柱高对异形柱极限承载力影响不大；栓钉间距和箍筋间距对于承载能力影响可以忽略。
- 外包混凝土 /
- L形型钢混凝土异形柱 /
- 轴压 /
- 承载能力
Abstract: In order to study the influence of key parameters such as steel strength, concrete strength, steel flange thickness, steel web thickness, column height, stud spacing, and stirrup spacing on the bearing capacity and failure mode of L-shaped steel special-shaped columns, a total of 5 sets of comparative members were designed for the finite element analysis under axial compression. The failure mode, load-displacement curve, stress distribution of profiled steel and concrete, etc. were obtained to analyze the performance of the special-shaped column under axial compression. The results showed that the structure of the special-shaped column with L-shaped steel was reasonable. With the increase of steel strength, steel ratio and concrete strength, the bearing capacity gradually increased. When the column height changed from 3 meters to 5 meters, it had little effect on the ultimate bearing capacity of special-shaped columns. The effects of stud spacing and stirrup spacing on the bearing capacity could be ignored.
- wrapped concrete /
- L-shaped steel special-shaped columns /
- axial compression /
- bearing capacity

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