A lateral displacement control method of long-span arch bridges for high-speed railways
A technology for long-span arch bridges and high-speed railways, applied to arch bridges, bridges, bridge forms, etc., can solve problems such as waste of engineering quantity and influence on bridge type selection, and achieve the effect of reducing bridge cost and simplifying structural design
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[0041] The applicant used this method to control the lateral displacement of the bridge during the design of the Beipanjiang Super Bridge of the Shanghai-Kunming Passenger Railway. refer to Image 6 , the total length of Beipanjiang Bridge is 721.25m, and the main bridge is a reinforced concrete arch bridge with a span of 445m, which is the reinforced concrete arch bridge with the largest span in the world. The span layout of the approach bridge and the structural holes on the arch is 1×32m simply supported box girder + (2×65m+8×42m+2×65m) prestressed concrete rigid frame-continuous composite beam + 2×37m prestressed concrete continuous beam.
[0042] The lateral displacement values at the arch deck under various working conditions of the bridge are:
[0043] Lateral swing force: 1.3mm
[0044] Horizontal wind force: 50.1mm
[0045] Temperature change (the temperature of the arch ring and the pier column on the arch is increased by 10° on one side): 51.4mm
[0046] Total...
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