Beijing Tong overall expansion joints designed rubber expansion joint device find Liu Li

Beijing Tong overall expansion joint expansion joint device designed rubber Liu Li 18230181118 find a reasonable selection of the appropriate amount of stretching the gap is extremely important, the greater the gap, the easier telescopic device destruction. Use of the gap is too large or too small, and not considered when installing and adjusting the temperature gap. Especially for laminated rubber telescopic device, easy to damage. Even continuous deck, on the surface layer of pavement also tend to crack. Therefore. To take pre-cut deck, set up the joint, or soft to absorb the pavement cracks, or install a small telescopic device to resolve. In the case of larger longitudinal, if not set up to consider the vertical displacement structure to adapt, but also prone to defects, causing damage. Longitudinal telescopic device along the bridge surface, even a small amount of stretching, there is a large difference between the deflection of the problem, therefore, in the telescopic device is configured to be given attention. Telescopic device and other strong beam combined into a whole is undoubtedly an important means to enhance its effective utilization. In addition to modulus telescopic device than other types of bridge expansion joints, and fixed bridge deck, with often insufficient, the effect is not ideal, generally small size of the structure, lack of rigidity, but also features new materials, fit, etc. research is not deep enough, so make full comparative study in the selection should be. To prevent rainwater leaking into the sky, although in some steel expansion joint device, the matching portion of the take easy cleaning type insert sealing rubber or drainage or pavement level layer as, or perfusion fill the entire gap in people Practical type waterproof material. Rainwater and deck, should generally be concentrated in the vicinity of the outlet telescopic device is provided; not routine maintenance work on for several painted components, should be of high quality and durable material for protection and effective treatment design. 1 safe installation of expansion joints, will require the construction unit joints hoisting, check whether it coincides with the center line of the beam centerline seam, the top surface and the road surface elevation is consistent, timely adjustments. The anchors embedded steel and welding joints firmly, and then across the 12 or 16 level bars. Expansion joints must be dismantled immediately positioning plate, engraved to locate the screw, and rubbed off the wheel burr horn, make up paint. Sealed with adhesive tape or wood joints the top slot in the notch portion 50 of the pouring of concrete; with the plug-in vibrator, vibrator fully dense. Smooth over the surface of the concrete section. Check the top surface with a ruler joints, excessive segment, should be smooth and the road. Only well after the opening of the concrete health. With anti-wall, sidewalk construction joints, the Senate made the mounting process operation. 2, the installation of [2] shall check whether the expansion joints with a factory certificate, manual, etc., and invite supervision, design and appearance of the officer on the joints, geometric precision inspection and acceptance, after passing before use. Scribed on the bridge, cutting: according to the location of the release of the expansion joint design center line, according to the design dimensions measured from the centerline position joints with concrete protection sideline, concrete cutting sewing machine according to the draw bridge asphalt concrete cutting edges. To ensure the trimming is not damaged, it can be divided into two cuts. The first slit edges aside from the protection zone 5cm, pending before pouring concrete, and then along a second cutting edges accurately. Slit requirements straight, accurate, careful not to damage the bridge deck waterproofing layer to protect the waterproof layer roll when cut. 3, be sure to promptly clean up the deck, filling the gap: artificial air compressor to clear cutting of asphalt concrete within the range, and chiseled loose concrete, and will clean up debris inside seam. Aperture width must meet the design requirements, after cleaning up the joints with benzene board blocking strict. Recovery embedded Anchorage, reserved number of bars to be consistent with the design drawings, not according to timely repair welding. Air compressor to clean up again. To prevent solder joints during installation flower burn foam board, foam board can be covered and protected on both sides with steel or iron. 4. When you want to install expansion joints in place with a crane lifting, you should check good crane hook, to prevent decoupling, should be in strict accordance with the manufacturer reserved hoisting crane lifting bits and tie rolled steel in accordance with the design drawings. In the fixed process used method of controlling the cable straight along the middle and degree of telescopic device, with a length greater than 3m beam or aluminum alloy steel having sufficient rigidity to control the ride height on both sides of the expansion joints. I-beam in the vertical direction at 1m spacing joints placed and pressed on both sides of the road with the seam, the joints with a wedge-shaped steel pad level, and then use the 3m ruler wicket stand with homemade piecewise precise leveling, adjusting level process should be made of steel wedges. After the expansion joints in place, it should be adjusted to the center line and elevation joints, according to the actual road surface elevation level on both sides of the seam is determined 5m range. The company specializes in the production of two-component polysulfide sealant, rubber water stop, rubber seal, water swelling rubber seal, closed-cell polyethylene foam, inflatable mandrel, rubber bearings, expansion joints, two-component polyurethane sealants.