Mechanical Property Analysis on Abutment of Concrete Filled Steel Tube Deformed Arch Bridge

A through concrete filled steel tube deformed arch bridge(with main span of 132 m) is made spatial analysis by means of finite element procedure ABAQUS.The abutment stress is calculated and analyzed separately with two construction methods of removal of scaffolding once and removal of scaffolding twice.The results show that 1) the stress of the abutment surface between arch ribs is more than the tensile strength designed value of concrete;2) under the condition of removal of scaffolding once,the stressed and deformed abutment won't meet level section assumption any more.