Focus is on the overall design and technical characteristics of the bridge crossing the Qingjia Expressway in Jingang Road in Jiayuguan City The bridge is a wide windless bracing half-through continuous beam arch composite structural system.The seismic intensity is high at the bridge location.In order to effectively reduce the impact of earthquake on the bridge structure,the friction pendulum seismic isolation bearings are installed at the arch feet,which is significantly different from the traditional half-through hinge free arch bridges It is the first windless bracing half-through continuous beam arch composite bridge in China.The layout of the main bridge span is(22+65+22)m and the bridge is 36 m wide.The main girder is a steel-concrete composite girder The arch ribs are thin-walled rectangular steel boxes.The bridge piers are the conical solid piers.And the foundation is a drilled cast-in-place pile foundation.
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