现代钢结构反复拉压下带圆形洞口的钢板力学性能研究

韩雪; 李海锋; 谢彩霞

doi:10.13204/j.gyjz202006021

现代钢结构反复拉压下带圆形洞口的钢板力学性能研究

doi: 10.13204/j.gyjz202006021

1. 厦门工学院, 福建厦门 361021;
2. 华侨大学土木工程学院, 福建厦门 361021

基金项目:

福建省自然科学基金面上项目（2018J01075）。

详细信息

作者简介:
韩雪,女,1981年出生,硕士,讲师。电子信箱:hanxuepaper@126.com

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- 文章访问数: 443
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出版历程
- 收稿日期: 2019-12-14
- 刊出日期: 2020-08-20

RESEARCH ON MECHANICAL PROPERTIES OF STEEL PLATES WITH ROUND HOLES UNDER REPEATED TENSILE AND COMPRESSIVE LOADS

1. Xiamen Institute of Technology, Xiamen 361021, China;
2. College of Civil Engineering, Huaqiao University, Xiamen 361021, China

摘要

摘要: 为研究反复拉压下带圆形洞口的钢板力学特性，对4种不同反复加载模式下的带圆形洞口的钢板进行数值分析。通过对比分析数值算例的变形形态、应力-应变滞回曲线、极限状态下的强度系数，获得加载模式、开洞形式、洞口大小对钢板滞回性能的影响规律。研究表明：反复拉压下钢板在圆形洞口区域存在应力集中现象，且钢板在受拉时的应力集中现象比受压时的更为显著；反复加载过程中，钢板经历的最大应变值对钢板滞回性能的退化起控制作用；而加载过程中循环加载的圈数对钢板滞回性能退化的影响相对较小；当圆形洞口数量较少、洞口直径较小时，圆形洞口对钢板滞回性能影响较小；而当圆形洞口数量较多或洞口直径较大时，圆形洞口对钢板滞回性能影响显著。
- 圆形洞口 /
- 钢板材性 /
- 数值分析 /
- 加载模式 /
- 滞回性能
Abstract: In order to investigate the mechanical properties of steel plates with round holes under repeated tensile and compressive loads, the numerical analysis for steel plates with round holes under four patterns of repeated tensile and compressive loads were carried out. The deformation patterns, stress-strain hysteretic curves and strength coefficients under the ultimate state were compared and analyzed. Then the influence laws of loading patterns, opening forms and diameters of holes on hysteretic performances of specimens were obtained. The results showed that the phenomena of stress concentration were occured surrounding round holes of steel plates under repeated tensile and compressive loads, and the phenomena of stress concentration under the tensile state was more obvious than that of the compressive state. The maximal strain values under the repeated loading were the dominated effect on degeneration of hysteretic properties of specimens, while the number of repeated loading cycles had less influence on degeneration of hysteretic performances. When the quantity and diameter of round holes were small, the effects of the openings on hysteretic properties of specimens were not obvious. While the quantity or diameter of round holes was bigger, the effects of the openings on hysteretic properties of specimens would become obvious.
- round hole /
- steel plate properties /
- numerical analysis /
- loading pattern /
- hysteretic properties

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