Bearing grouting material in the important role of bridge bearing installation

Bearing grouting material in the bearing installation pedestal standard and quality should be fit plan request, its bottom and top surface when bearing assembly ( Buried in the pier top and beam bottom) Steel plate, it is necessary to embedment close-grained. Near the bearing flat plate with bearing dense paste, can not have 0. More than 3 mm gap, keep clean. Activities in support of ptfe plate and stainless steel plate must not have scratches and bumps. Neoprene plate sealed inside steel basin, to clear the air, keep tightly. 1, shifting bearing device with acetone or alcohol before carefully wipe the relative sliding surface, wipe after within four fluorine skateboard storage tank filled with silicon lipid lubrication beautiful seam an agent, and pay attention to the silicon grease cleaning; Ramp bridge silicon grease injection should be pay attention to prevent slippery. 2, pot rubber bearing, the roof and bottom plate can be used when the welding or anchor bolt, using the fixed pedestal grouting material, it shows the height of the screw shall not be greater than the thickness of the nut; Cast-in-place beam at the bottom of the embedded steel plate or skateboarding, should according to the temperature of the casting, the prestressed tensioning, concrete creep and shorten the impact on the beam length, set the partial value relative to the support base of the planning. 3, pot rubber bearing in the field until the device is optional apart of roof and floor, when the device ensure the accuracy support in place. Pot rubber bearing before loading bridge dead load, unfavorable to fix bearing iron removal. Such as cast-in-place box beam bottom pot rubber bearing in M50 liquidity non-shrinkage mortar ( Bearing grouting material) After the completion of the casting, the prestressed tensioning or floor diaphragm apart before the fixed plate. 4, support device is necessary to think device working environment and temperature effects, choose the suitable device for temperature and humidity is necessary. 5, pot rubber bearing, in use process found rust, demand for the bearing surface besmear brushs antirust paint; Steel desoldering requirements in terms of repair welding, but completes the protective measures is necessary during repair welding, should avoid to burn basin and four fluorine rubber plate. 6, if use pot rubber bearing, crack and deformation of steel, ptfe skateboarding wear, supported by displacement overrun, overrun and anchor bolt support corner cut, needs a special plan, such as disease of pot rubber bearing to be replaced.