UHPC-NC mixed box girder, large-span rigid frame bridge and construction method of large-span rigid frame bridge

• Main Authors: HE YAOBEI, SHAO XUDONG
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention discloses a UHPC-NC mixed box girder for a large-span rigid frame bridge. The UHPC-NC mixed box girder comprises a UHPC ribbed bottom plate, an NC web plate and an NC top plate, and theUHPC ribbed bottom plate is fixedly connected with the NC top plate into a whole through the NC web plate. The invention further provides a large-span rigid frame bridge which comprises pier top beamsections, first beam sections and second beam sections, the first beam sections are located on the two sides of the pier top beam sections and are symmetrically arranged along the pier top beam sections, and the second beam sections are located on the outer sides of the first beam sections and are symmetrically arranged along the pier top beam sections. The invention further provides a construction method of the large-span rigid frame bridge. According to the large-span rigid frame bridge, the bottom plate of the high-pressure stress area is the UHPC ribbed plate, creep of the UHPC prefabricated plate after high-temper