Straddle type monorail roadbed structure in hard rock area and construction method thereof

The invention provides a straddle type monorail roadbed structure in a hard rock area and a construction method thereof. The roadbed structure comprises a plurality of bearing platforms and a plurality of supporting plates, wherein the bearing platforms are used for supporting rail beams of straddle type monorails. The multiple bearing platforms are laid on a hard rock stratum and arranged at intervals in a longitudinal direction of the rail beams, the multiple supporting plates are sequentially arranged in the longitudinal direction of the rail beams, the supporting plates are arranged at thetops of the multiple bearing platforms and connected with the bearing platforms, and the rail beams are fixed to the top ends of the supporting plates; and two straddle type monorail rail beams are longitudinally arranged on each supporting plate in parallel. According to the roadbed structure, the multiple bearing platforms are arranged on the stratum of the hard rock to support the rail beams,loads of the rail beams an