The third step: hanging basket forward, according to the above third steps in the symmetrical construction of box girder section.The fourth step: the installation of side span closure segment hanging mold installation ---- closure section skeleton, formwork, steel banding, installation of prestressed pipe and the core concrete pouring, side span closure segment and maintenance - tension closure segment longitudinal, transverse and vertical prestressed grouting, removing the side line and cross - closure section construction support - side span box girder falling.
The second step: in the 0# block 1# block assembled hanging basket hanging basket -- 1.2 times the pre load pressure (first), observation, uninstall the pre camber adjustment, bottom plate and web of steel processing and installation, bottom plate and web prestressed pipe laying, installation of roof - mandrel steel processing, installation, installation of prestressed pipe roof 1# block, concrete pouring, the symmetry conservation tension in this section of the longitudinal and transverse steel beam and a vertical section of the finishing rolling rebar and anchor sealing and grouting.
The first step: the erection of scaffolding - Installation of permanent support and the temporary support ---- ---- ---- preloading die bedding bottom die ----0# block bottom plate and web of steel processing and installation, bottom plate, web plate and vertical prestressed pipe laying, installation of roof - mandrel steel processing, installation, roof pre stress pipe installation (vertical and horizontal). Pouring concrete, curing, 0# block tension lateral steel bundle, sealing anchor, pressure grouting, and on the top of the pier to girder and pier temporary consolidation.
The construction of the hanging basket is not the pre pressure of each section.Hanging basket construction steps are as follows:
