平面K形管板节点主管受弯承载力研究

发布时间：2018-01-12 05:00

本文关键词：平面K形管板节点主管受弯承载力研究　出处：《钢结构》2016年12期 　论文类型：期刊论文

【摘要】：对于K形管板节点在主管受弯模式下的承载能力进行试验研究和有限元分析。共完成5组节点静力试验,观察不同主管壁厚及直径的节点承载力及变形发展情况。建立4组K形管板节点有限元分析模型,分别研究主管直径、主管壁厚、节点板厚度及加载方向几个主要参数对节点受力性能的影响。对比试验和有限元结果表明,K形管板节点的受弯承载力随着主管直径的增大先增大后保持不变、随着主管壁厚的增加增大显著、与节点板厚度关系较小,并且在同等弯矩下主管与节点板交界处抗拉性能优于抗压性能。在试验和理论分析基础上,通过数值回归的方法提出了主管受弯的承载力计算式,并验证了其适用性。
[Abstract]:The load-carrying capacity of K-shaped tube-plate joints under the in-charge bending mode was studied and finite element analysis was carried out. Five groups of static tests were completed. The development of bearing capacity and deformation of joints with different wall thickness and diameter were observed. Four groups of finite element analysis models of K-shaped tube-plate joints were established to study the diameter and wall thickness respectively. Comparison test and finite element results show that the flexural capacity of K-shaped tube-plate joints increases first and then remains unchanged with the increase of the diameter of the joints. With the increase of the wall thickness of the supervisor, the relationship between the thickness of the joint plate and the thickness of the joint plate is small, and the tensile performance at the junction between the supervisor and the joint plate is superior to the compressive performance under the same bending moment. A numerical regression method is used to calculate the bearing capacity of the supervisor and its applicability is verified.
【作者单位】：北京建筑大学工程结构与新材料北京高等学校工程研究中心;
【基金】：国家自然科学基金项目(51578038) 北京2011协同创新中心项目
【分类号】：TU392.3
【正文快照】： 1概述钢管构件经常应用于大跨度的停机库、工业厂房及输电塔架等结构中。其具有截面对称,具有较大的回转半径、抗扭刚度较大、承载力高、稳定性好,端部封闭后抗腐蚀性能好等优点。管板节点为工程中常见的管结构节点形式,能够避免传统相贯焊节点的复杂加工工艺,相比于螺栓球节

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