为改善桥隧设备质量状态，确保提速重载运输安全，对新长线175#桥、23

In order to improve the quality of bridge and tunnel equipment and ensure the safety of high-speed and heavy-load transportation, the entire hole of the new long line 175# bridge, 233# bridge, and 234# bridge sleepers has serious failures and undergoes major repairs. The deck of the 2-hole trestle bridge is 48m bolt-welded lower truss, each hole is made and installed with 49.1 bridge extension meters (136 pieces), 59 bridge extension meters are dismantled and paved, and 272 sets of K-type split fasteners are dismantled and assembled; Install 272 sets of sherardizing hook bolts and 136 sets of sherardizing straight bolts; the upper cover plate is derusted and zinc sprayed is 49.1 square meters. The new long line 175# bridge is a 1-32m under-bolt welded plate girder. The bridge sleeper is 32.6 meters long (90 pieces), 4 double sleepers at the bridge head, 48 bridge extension meters are dismantled and paved, and the K-type split type is dismantled and assembled. 180 sets of fasteners, 180 sets of sherardizing hook bolts, 90 sets of sherardizing straight bolts, rust removal of the upper cover and 32.6 square meters of zinc spray paint.

In order to improve the quality status of bridge tunnel equipment and ensure the safety of speed-up heavy-duty transportation, the new long-line 175-bridge, 233-bridge, 234-bridge pillow hole failure is serious, major repair and replacement. The 2-hole bridge bridge surface is 48m welding under the crucible, each hole to make the installation of bridge pillow 49.1 bridge extension meters (136), the removal of the rail 59 bridge extension meters, the removal of K-type separate fasteners 272 sets; The new long-line 175-bridge for 1-32m under the bolt welding plate beam, the production and installation of bridge pillow 32.6 bridge Yanmi (90 roots), bridge head double pillow 4 roots, the removal of the guard rail 48 bridge extension meters, the removal of K-type separate fasteners 180 sets, the installation of zinc hook bolts 180 sets, zinc seepage straight bolts 90 sets, cover plate rust removal, spray zinc paint 32.6 square meters.

In order to improve the quality of bridge and tunnel equipment and ensure the safety of speed-up and heavy-duty transportation, the whole hole of 175, 233 and 234 bridge sleepers on the new long line was seriously invalid, and they were overhauled and replaced. The deck of the two hole trestle is 48m bolt welded lower truss, 49.1 m bridge extension meters (136 pieces) of bridge sleepers are made and installed in each hole, 59 m bridge extension meters of guard rails are removed and paved, 272 sets of K-type separated fasteners are removed and assembled, 272 sets of galvanized hook bolts and 136 sets of galvanized straight bolts are installed, and 49.1 square meters of rust removal and zinc spraying are applied to the upper cover plate. The 175 # bridge of the new long line is a 1-32m lower bearing bolt welded plate beam. 32.6 linear meters (90 pieces) of bridge sleepers, 4 double sleepers at the bridge head, 48 extended meters of bridge guard rails, 180 sets of K-type separated fasteners, 180 sets of galvanized hook bolts, 90 sets of galvanized straight bolts, and 32.6 square meters of rust removal and zinc oil painting on the upper cover plate are manufactured and installed.<BR>