SSF-type expansion joint device bridge expansion joints, is by Academy of Railway Sciences, Ministry of Transportation and Changshu xinjin 筑路机械厂 rubber expansion joint series jointly developed one of the products Modular bridge. 1, the structural characteristics of steel bridge expansion joints and rubber-piece telescopic device. Its structure is supported mainly by the force transmission system and the displacement control system in two parts. Support systems for power transmission power transmission system is supported by the intermediate beams, side beams, bearings and bearing support beam and pressed bearing components, shown in Figure 5-8. Bridge expansion joints welded steel shaped steel structure instead of the overall shape, ie the middle beam processed from railroad rails, equilateral beam and the crosspiece with the general structural steel manufacture. According to the principle structure of TCS-filled thermoplastic elastomer bridge joints, and must strictly adhere to all the major aspects of construction, bridge expansion joints should generally use embedded squeeze demonstrate good stiff processed gravel, bridge expansion joints for the main layer specifications 20-40mm, the surface layer of 5-10mm, and requires its value is not more than 30% crushed, flattened and elongated stone content should be less than 15% -20%, while the use of special equipment must be heated, the heating temperature should be controlled in 100-150, bridge expansion joints dedicated RS composite rubber, the heating temperature in the 190-210, short of 230, the temperature shall not exceed 2h, should pay attention to more than three in the wind, the weather conditions at a temperature below 10, not construction telescopic device, for different amount of stretching that expansion joints, depending on the size of the notch to the displacement of prestressed multi-telescopic device, bridges thermoplastic elastomer material per meter of material fact, the construction process can be roughly in accordance with the grooving, clean tank, drying notch, adhesive-coated, gravel heating, paving gravel modulus telescopic device, pouring RS accord rubber, leveling is complete. For ease of calculation analysis and practical application, accustomed to the temperature bridge structure changes due to the above causes is subdivided into two parts. Bridge expansion joints linear and non-linear temperature change temperature rubber plate telescopic device, the design of the bridge structure, should consider the effect of temperature, telescopic structure which accounted for bridge expansion joints linear temperature changes caused by the structure of the entire stretch of bridge Most of the amount. Analysis of the role of linear temperature variation of the bridge structure, off into the formula to determine the temperature range of the bridge structure, the highest value and the lowest effective temperature effective temperature. Telescopic device, Hao-engineering rubber, prestressed multi-telescopic device to displacement by Hao-engineered rubber. Hengshui Hao Tong Engineering Rubber Co., Ltd. (www.htgcxj.com) in the grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, ball bearings and other steel industry has high visibility, integrity management both, quality of service, welcome to inquire or consult our "business alliance customer service" it!