Structural design on large-span steel grid roof of Hanchuan East Railway Station
The roof of Hanchuan East Railway Station is a complex curved surface with maximum column grid span of 140m×48m,and a large-span steel grid structure is adopted.Due to the limitation of modeling,the roof structure is staggered.In order to coordinate the deformation and optimize the force transmission path,a reinforced truss with prestressed cables was set at the staggered connection part to effectively reduce the adverse effects of the staggered roof.Due to the complex shape of the roof,in addition to the static calculation of the structure to ensure that the roof deformation index meets the requirements of the code,the buckling analysis,joint finite element analysis,cable type selection,and anti-collapse analysis were also carried out to ensure that the roof stability meets the requirements of the code,reliable force transmission of important nodes,the efficiency and necessity of the cable and the ability to anti-continuous collapse.The results show that the design of the project meets the requirements of code.
Hanchuan East Railway Stationlarge-span steel gridbuckling analysisanti-continuous collapse
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