Model Experimental Research of the Joint Between Integral Abutment and Composite Beam
Integral bridges eliminate the cost of construction of expansion joints as well as problems of disease and re-placement.In order to study the mechanical properties of the joint between integral abutment and composite beam,three structural forms of the joints are proposed in this paper:compression-shear type,web-structure type and plug-in type.Static loading model experiments were carried out on the three joint structures,and the joint displacement and relative slip data were tested considering the most unfavorable bending moment and the most unfavorable shear condi-tions.The model experiment results show that the compression-shear type specimen has the largest bearing capacity,the largest relative rotational stiffness,the longest linear segment of the load-displacement relationship and the bend-ing moment-rotation angle relationship,and the best combination performance.The research results can provide refer-ence for the design and research of the joint between integral abutment and composite beam.
integral composite bridgeabutment-steel beam jointmodel experimentmechanical properties
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