The Design of Steel Bent Cap of Portal Frame Pier on Zhongchuan Airport Terminal 3 Connecting Line
Taking the steel bent cap of the portal frame pier of Zhongchuan Airport Terminal 3 Connecting Line viaduct as an example,this paper refers to the Specifications for Design of Highway Steel Bridges(JTG D64-2015)for research,clarifies the structural design idea of the steel bent cap,determines the web thickness of the steel bent cap and the reasonable setting form of its stiffening rib,and carries out the structural design of the bearing position of the main bearing part and the connection between the pier and the beam.At the same time,the overall and local analysis is conducted through the finite element model to verify the local stress and stability of the controlled section.Through the research,the most unfavorable design control factors of the steel bent cap of the portal frame pier are clarified,which can be used as a reference for subsequent engineering design.
viaductportal frame piersteel bent capintermediate diaphragmstiffening ribfinite element analysis
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