| 剪切型消能连梁的循环屈曲特性研究 |
| |
| 引用本文： | 刘晓刚,樊健生,聂建国.剪切型消能连梁的循环屈曲特性研究[J].工程力学,2020,37(7):89-98. |
| |
| 作者姓名： | 刘晓刚 樊健生 聂建国 |
| |
| 作者单位： | 1.中冶建筑研究总院有限公司，北京 100088 |
| |
| 基金项目： | 国家重点研发计划项目(2017YFC0703804)；国家自然科学基金项目(51708566，51890903) |
| |
| 摘 要： | 该文对剪切型消能连梁的循环屈曲特性展开了试验研究，并建立了连梁的数值分析模型，分析了不同参数对连梁腹板循环屈曲特性的影响规律。研究表明:轴向位移约束对连梁的腹板的屈曲特性基本没有影响，轴力不大时也基本不影响连梁的腹板的屈曲特性。参数分析表明:腹板高厚比对连梁屈曲位移角的影响最为显著；腹板宽高比和横向加劲肋间距与腹板高度的比值对屈曲位移角的影响也十分明显，但腹板宽高比和横向加劲肋间距与腹板高度的比值超过2之后，其对屈曲位移角的影响变得很小；等效连梁长度系数和材料强化特性对屈曲位移角基本无影响。建立了腹板循环屈曲位移角的理论预测方法，试验和数值验证表明:该方法具有较高的可信性。
|
| 关 键 词： | 钢连梁 循环屈曲 剪切 位移角 消能减震 |
| 收稿时间： | 2019-08-01 |
RESEARCH ON CYCLIC WEB BUCKLING BEHAVIOR OF ENERGY DISSIPATION SHEAR LINKS |
| |
| Affiliation: | 1.Central Research Institute of Building and Construction CO. LTD. MCC, Beijing 100088, China2.Department of Civil Engineering, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | Specimen tests were conducted to study the cyclic web buckling behavior of energy dissipation shear links. Numerical models for the links were established and the influence of different parameters was analyzed and summarized. The results indicate that the axial displacement constraint had little influence on the cyclic web buckling. The axial forces also had little influence if the tension or compression was not significant. By a parametric analysis, it was confirmed that the web height-thickness ratio had most significant influence on the web buckling displacement angle. The web aspect ratio and the ratio of transverse stiffener spacing to web height also had significant influence, but the influence became slight after the ratio exceeded two. The equivalent link length coefficient and the steel hardening characteristic had little influence. A theoretical prediction approach for the cyclic web buckling displacement angle was proposed. The experimental and numerical validation confirmed that the approach is reliable. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《工程力学》浏览原始摘要信息 |
|
点击此处可从《工程力学》下载全文 |
