论文部分内容阅读
在钢管结构实际工程中,由于型材定尺生产、加工下料、运输等原因,大量杆件本身需要相互连接.本文研究的内置刚性连接方式,由十字连接板、垫板和高强度螺栓组成,钢管和十字插板采用角焊缝连接,十字插板之间采用摩擦型高强度螺栓连接.对轴力作用下节点受力性能进行了6个试件的轴心受拉试验.研究结果表明,通过螺栓连接和钢管的等强设计可有效传递轴力,十字插板长度在一定范围内增加可有效增加节点承载力,但由于连接处存在截面突变,容易引起应力集中和应力分布不均匀现象,在设计时应该考虑由此引起的剪切滞后效应.
In the actual engineering of steel pipe structure, a large number of bars need to be connected with each other due to the length of the profile, production and processing, cutting and transportation etc. The built-in rigid connection method in this paper is composed of cross connecting plate, backing plate and high strength bolt, The filigree connection between the steel pipe and the cross plate is adopted, and friction type high strength bolts are used between the cross plates, and the axial tension test of six test pieces under the axial force is carried out.The results show that, The axial force can be effectively transmitted by means of the bolt connection and isosceles design of the steel pipe. The increase of the length of the cross plate in a certain range can effectively increase the bearing capacity of the node. However, due to the sudden change of cross section at the junction, stress concentration and uneven stress distribution are easily caused, The design should consider the resulting shear lag effect.