CPC E01D 21/00 (2013.01) [E01D 11/04 (2013.01)] | 10 Claims |
1. A mid-span axial force-free connecting device for an earth-anchored cable-stayed bridge, the device comprising an externally sleeved large steel box girder and an internally embedded small steel box girder arranged inside the externally sleeved large steel box girder a plurality of bearing beams arranged on an inner periphery of the externally sleeved large steel box girder;
a set of transverse spherical bearings;
a set of vertical spherical bearings;
wherein transverse spherical bearings or vertical spherical bearings from the set of transverse spherical bearings or from the set of vertical spherical bearings, respectively are arranged on the plurality of bearing beams; wherein the internally embedded small steel box girder is fixedly supported at a set of sections in the externally sleeved large steel box girder through a plurality of symmetrically arranged transverse spherical bearings and symmetrically arranged vertical spherical bearings from the set of transverse spherical bearings and from the set of vertical spherical bearings, respectively.
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