论文部分内容阅读
为研究圆管桁架构件不同连接工艺条件下的承载力性能,针对6种常用的连接模式,采用计算力学方法进行了力学性能分析,研究其工艺力学特性。考虑焊缝刚度影响、焊材脆性影响,构建了网格化数值模型。数值计算中通过在非线性Newton-Raphson算法中引入Low-Speed Dynamics Damping技术,考察节点的极限承载力与撕裂失效特征;综合力学、工艺、经济性等因素综合评价。分析表明,隔板对接方式具有较好的承载能力和变形性能,值得在工程应用中推广,为实际工程改进、优化连接设计的构造措施提供参考。
In order to study the bearing capacity of pipe trussed truss members under different connection conditions, the mechanical properties of the pipe truss members under different connection conditions were analyzed. Considering the effect of weld stiffness and the brittleness of welding consumables, a gridded numerical model was constructed. In the numerical calculation, by introducing Low-Speed Dynamics Damping technology into the nonlinear Newton-Raphson algorithm, the ultimate bearing capacity and the failure characteristics of the joint are investigated. The comprehensive evaluation of the comprehensive mechanics, technology and economy is carried out. The analysis shows that the butt-jointing method has good bearing capacity and deformation performance, which is worth to be popularized in engineering application. It provides a reference for the actual engineering improvement and optimization of the connection design.