Lower-bearing tied arch bridge generally uses the medium span across rivers or roads,with higher stiffness,clearance,convenient construction,the lower foundation requirement,and so on.The domestic hanger mainly uses the flexible hanger with the parallel wire strand,and the distant landscape effect is poor.In recent years,the European arch bridge increases the use of rigid hanger with full welded steel hanger.The fully welded steel hanger connects the arch rib and the tie beam through the joint welding process,and the section tension stiffness and bending stiffness are very important to affect the stress system of the arch bridge.However,there are few reports in domestic literature at present,and there is an urgent need for research.Taking the stiffness of fully welded steel hanger as the parameter,this paper analyzes the influence of fully welded steel hanger with different stiffness on the stress performance of the arch bridge,provides reference for the design and construction of the rigid hanger for fully welded steel hanger arch bridges.
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