Bolt Welded Connection Node Test And Finite Element Analysis

Normally, most joints of steel structure are taking single fastening device as connection type, like bolt connection, weld connection, and connection using rivets. Combined connections can also be taken as one kind of connection type usually for the reason of reinforcing the joint and increasing the joint carrying capacity. Weld connection and bolt connection are the most popular two types in single connection; therefore the combined connection with welds and bolts is most widely used combined one. Related experiments and analysis on this combined connection can be rarely referred domestically. In this paper, experimental research on combined connection with welds and different gauges of slip-critical high-strength bolts is undertaking. Through simulating the experimental members by using FEM and comparing the experimental results and the simulating ones, the conclusions and advice on this kind of combined connection are put forward.In this paper, the Finite Element Method is taken to analyze the carrying capacity of combined connection with slip-critical high-strength bolts and welds in the same shear plane with regard of the model member material nonlinearity and plane contact nonlinearity; conclusions that how much the slip-critical high strength bolts and fillet welds contribute for the carrying capacity of the joint are also drawn by comparisons of the deformable capability of basic experimental members and that of models and by comparisons of the carrying capacity of each experimental member and that of related model. Hence the calculated design model and formula are got for the combined joint; these could apply the practical use of the bolt-weld combined joint and compilation of related technical code with reliable experimental data and theoretical analysis.