| 国产低屈服点钢材循环加载试验研究 |
| |
| 引用本文： | 施刚,王珣,高阳,张勇.国产低屈服点钢材循环加载试验研究[J].工程力学,2018,35(8):30-38. |
| |
| 作者姓名： | 施刚 王珣 高阳 张勇 |
| |
| 作者单位： | 1.土木工程安全与耐久教育部重点实验室, 清华大学土木工程系, 北京 100084; |
| |
| 基金项目： | 国家自然科学基金优秀青年科学基金项目（51522806）；国家自然科学基金项目（51478244） |
| |
| 摘 要： | 为研究不同荷载作用下国产低屈服点钢的材料力学行为，对LY100、LY160及LY225钢材共46个试件进行了单调拉伸试验及12种不同加载制度的循环加载试验。对国产低屈服点钢的单调性能、滞回性能、破坏形式、延性特征等进行了分析，并与其他结构钢材的力学性能进行了对比。结果表明，低屈服点钢在循环荷载作用下有明显循环强化现象，塑性变形能力强，且与普通钢材相比延性及耗能能力突出。该试验结果为后续研究低屈服点钢本构模型提供基础。
|
| 关 键 词： | 钢结构 低屈服点钢 单调加载 循环加载 试验研究 |
| 收稿时间： | 2017-08-11 |
EXPERIMENTAL STUDY ON DOMESTIC LOW YIELD POINT STEELS UNDER CYCLIC LOADING |
| |
| Affiliation: | 1.Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China;2.East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China;3.School of Civil Engineering, Beijing JiaoTong University, Beijing 100044, China |
| |
| Abstract: | To investigate the mechanical behavior of low-yield-point steels produced in China under various loadings, 46 specimens of LY100, LY160, and LY225 were tested under monotonic tensile loading and 12 cyclic loading programs. The monotonic loading behavior, hysteretic behavior, failure modes and ductility performance of low-yield-point steels were analyzed and compared with other structural steels. The results indicate that low-yield-point steel shows obvious cyclic hardening characteristic and high capability of plastic deformation. Compared with other structural steels, the low-yield-point steel has better ductility and energy dissipation capacity. The results will provide the basis for future studies on the constitutive model of low-yield-point steels. |
| |
| 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 |
|
