摘要
针对钢筋剥肋滚轧直螺纹套筒连接技术的强度及连接的最小螺纹扣数等方面研究处于试验研究阶段,理论分析相对匮乏的情况,通过有限元分析软件ANSYS为此研究提供一定的理论支撑。在建立螺纹接触仿真分析模型的基础上,对钢筋直螺纹连接方式下不同连接长度的钢筋与套筒的应力分布进行了计算。计算结果表明,随着钢筋和套筒连接长度的增加,连接强度增加;钢筋和套筒最佳连接长度为9~11扣螺纹。计算结果与试验结果完全吻合。
Despite the wide use in modern construction, nowadays, we can just decide the minimum connection length of reinforce bar connector with experiments without the support of theoretical works. In the paper, the finite element software ANSYS is used to investigate the strengths of reinforce bar connector. A three-dimensional finite element model has been developed to account for contact and material nonlinear behavior of threads of connector and bars and the stress distribution of reinforce bar connector with different connecting length is obtained. The numerical results show that with the increasing of connecting length, the maximum stress of thread of the bar decreases violently and the optimal connecting length is about 9-11 threads. The proposed numerical model provides a consistence with experimental results.
出处
《江南大学学报（自然科学版）》
CAS
2009年第3期331-334,共4页
Joural of Jiangnan University (Natural Science Edition)
关键词
钢筋
套筒
连接强度
reinforcebar, sleeve, strength of jointing
