| 碳纤维增强方钢管混凝土压弯构件的静力性能(I)——试验研究与有限元模拟 |
| |
| 引用本文： | 王庆利,陈星宇,张芝润.碳纤维增强方钢管混凝土压弯构件的静力性能(I)——试验研究与有限元模拟[J].工业建筑,2014(7):141-145. |
| |
| 作者姓名： | 王庆利 陈星宇 张芝润 |
| |
| 作者单位： | 沈阳建筑大学土木工程学院; |
| |
| 基金项目： | 国家自然科学基金面上项目(51378320);辽宁省科学事业公益研究基金项目(2013003004) |
| |
| 摘 要： | 以长细比和偏心率为主要参数,对24个碳纤维(CFRP)增强方钢管混凝土(S-CF-CFRP-ST)压弯构件进行静力性能的试验研究。试验结果表明,构件的轴力-中截面挠度曲线可以分为3个阶段:弹性段、弹塑性段和下降段。通过分析试验结果发现,钢管与CFRP可以协同工作;构件的挠曲线近似为正弦半波曲线。应用ABAQUS软件模拟了试件的轴力-中截面挠度曲线和变形模态,模拟结果与试验结果吻合良好。
|
| 关 键 词： | 碳纤维增强方钢管 填充混凝土 压弯构件 试验研究 有限元模拟 |
STATIC PERFORMANCE OF CONCRETE FILLED SQUARE STEEL TUBULAR BEAM-COLUMN STRENGTHENED BY CFRP EXTERNALLY(I) :EXPERIMENTAL STUDY AND FINITE ELEMENT SIMULATION |
| |
| Abstract: | Taking slenderness ratio and eccentricity ratio as the principal factors,static behavior of 24 pieces of concrete filled square steel tubular beam-columns strengthened by CFRP externally(S-CF-CFRP-ST) were experimentally investigated.The test results showed that the axial load-deflection curves on the cross-section at midheight of the composite members could be divided into elastic stage,elasto-plastic stage and softening stage.Analysis on the experimental results showed that the steel tube and its outer CFRP material could cooperate both longitudinally and transversely,in addition,deflection curves of the tested members behaved much similarly as half sinusoidal curve.The failure modes and the axial load-deflection curves on the cross-section at mid-height of the specimens were simulated by using ABAQUS software.The simulated results agreed well with experimental values. |
| |
| Keywords: | square steel strengthened by CFRP externally in-filled concrete beam-column experimental study finite element simulation |
| 本文献已被 CNKI 等数据库收录！ |
