摘要
为深入研究不锈钢螺钉抗剪连接斜拔破坏的受力性能,在试验研究基础上,建立了三维实体有限元模型进行数值模拟,分析了螺钉连接斜拔破坏不同阶段的受力特点;探讨了钢板厚度、螺钉直径以及螺钉端矩3个参数对抗剪承载力的影响规律。研究结果表明:建立的有限元模型可准确模拟不锈钢螺钉连接斜拔破坏承载性能;其抗剪承载力与螺钉直径及板厚呈线性关系变化。最后,结合试验及参数分析结果,讨论了现行相关规范不锈钢螺钉连接抗剪承载力设计计算方法的适用性。
In order to deeply study the mechanical properties of stainless steel screw shear connection in tilting and pullout failure mode,based on the experimental study,a three-dimensional solid finite element model was established for numerical simulation. The stress characteristics of different stages of screw shear connection tilting and pull-out failure mode were analyzed. And the influence of three parameters such as the plate thickness,the diameter of screw and end distance was elaborated. The results showed that the established finite element model could accurately simulate the tilting and pullout failure performance of stainless steel screw connection. The shear bearing capacity of screw connection was linearly related to the screw diameter and plate thickness. Finally,On the basis of the tests and parameter analysis,the adaptability of the current design method for shear-bearing capacity of screw connections was discussed.
作者
钱峰
彭洋
周伟
沈慧之
董军
QIAN Feng;PENG Yang;ZHOU Wei;SHEN Huizhi;DONG Jun(College of Civil Engineering,Nanjing Tech University,Nanjing 211816,China;Zhenjiang Jianke Engineering Quality Checking and Measuring Center Co.Ltd,Zhenjiang 212004,China)
出处
《钢结构》
2018年第9期70-74,共5页
Steel Construction
关键词
不锈钢
螺钉连接
数值模拟
斜拔破坏
抗剪承载力
stainless steel
screw connection
numerical analysis
tilting and pull-out failure
shear-bearing capacity
