Experimental study on fatigue properties of partial shear connection composite beam

partial shear connection;  composite beams;  Fatigue

Through the static load and repeated loading tests of eight partially shear connection composite beams, the effect of repeated loading on the stress performance of partial shear connection composite beams was studied on the basis of the analysis of the test process, test phenomenon and test results. The test results show that the partial shear connection composite beam under repeated load has good fatigue resistance. Under the condition that the welding quality is guaranteed, the fatigue failure of part of the shear connection composite beam under the fatigue load within the normal use range will hardly occur. Therefore, it is feasible to use partial shear connections in building structures and bridge structures to bear fatigue loads when necessary, and can bring good economic benefits.