SF三防桥梁伸缩缝 货到付款 型号齐全。SF三防桥梁伸缩缝 货到付款 型号齐全
The size of the reserved slot for the installation of the expansion joint of the road bridge shall be checked according to the size provided by the design drawings in the end of the installation. If the drawing does not specify, then the modulus expansion device, the amount of expansion is 160mm, the reserve groove depth should be greater than or equal to 250mm, and the remaining expansion amount should be gradually deepened according to needs. The depth of the reserved groove of the special-shaped steel single slit telescopic device shall be greater than or equal to 150mm. At the same time should check the consistency of the location and design specifications, quantity, pre embedded anchor bar, beam, plate, and the reliability of abutment anchorage； check telescopic beam, plate and the gap between the abutment is consistent with the design value, if it does not comply with the design requirements, the construction unit should first meet the design requirements after the treatment. The production of the expansion device can be installed.
Before the installation of bridge expansion device, should be in accordance with the installation location and installation of the temperature adjustment value, and shall be responsible for the installation check signed available special fixture will be fixed. Before the expansion device is hoisted, the concrete in the reserved tank should be cleaned and cleaned. When lifting, it should be hoisted according to the hanging point indicated by the factory, and can be properly strengthened if necessary.
SF三防桥梁伸缩缝 货到付款 型号齐全
When installed, the center line of the expansion device should coincide with the center line of the bridge expansion device, placed along the bridge clearance from the joints to be symmetrical, and then along the deck transverse slope direction, a horizontal elevation measurement per meter, and with horizontal feet or board foot position, the top surface elevation and design requirements anastomosis pad. Then wear a cross connection level and reinforcement, anchoring steel telescopic device and beam, plate or abutment pre buried steel welded on both sides at the same time. If there is difficulty, the first side welding, installation to temperature has been determined, and then the other side anchor bars all welded, relaxed fixtures, the free expansion.
Comb type retractor device installation should prevent deformation, distortion and other uneven comb, strictly control the error due to telescopic direction and transverse expansion caused by the gap between teeth, at the highest temperature, the transverse distance between comb teeth should not be less than 5mm, tooth plate gap should not be less than 15mm.
SF三防桥梁伸缩缝 货到付款 型号齐全
The installation device for expansion joints of highway bridges shall be in a compression state after installation. Before placing the concrete, the reserve tank shall be thoroughly cleaned and the gap shall be filled with foam plastic in the gap of the expansion joint, and then the necessary formwork shall be installed. The concrete reserved trough shall be C40 epoxy resin concrete or C50 steel fiber concrete, and the concrete filled with C50 or more strength grade shall be filled and tamped. Concrete shall be prevented from penetrating into the displacement control box of the modular expansion device, and concrete shall not be allowed to be splashed on the surface and surface of the sealing rubber band. If this occurs, it should be removed and then properly maintained. The concrete strength of the reserved slot on both sides of the expansion device shall not be open until the design requirements have been met. The construction and acceptance of the telescopic device shall be carried out in accordance with the provisions of JTJ071.
SF三防桥梁伸缩缝 货到付款 型号齐全