American Watson (Wotson) means a bridge expansion joints, bridge expansion joints support systems: support beam supporting the bridge expansion joint device on the brake can be buffered the impact of elastic support, so that deflection move the entire structure is easy to adjust. Beams located on each respective set of support beam, bridge expansion joints and rigid connection (Figure 5-22). Thus, fixed to the support beam of the beam does not tilt when subjected to braking force level, since the entire support beam as a basis for assembly, forms a very stable grid structures. 2, bridge expansion joints displacement control system: the telescopic device between the root support beam bearing boxes are installed polyurethane foam control spring, they can slip from one application to the other side, when the device is opened to the maximum extent d160 Modular expansion joints, bridge expansion joints produced the greatest pressure control spring. Conversely, when compressed into the smallest gap gqf-c-1-type expansion joints, control spring that is completely relaxed, to adjust the span and other purposes, as shown in Figure 5-26. According to the principle structure TCS bridge joints filled thermoplastic elastomer, and must strictly adhere to all the major aspects of the construction, expansion joints should generally use the embedded squeeze demonstrate good stiff processed gravel, bridge expansion joints primary 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%, and must use special equipment for heating, the heating temperature should be controlled 100-150, bridge expansion joints dedicated RS composite rubber, the heating temperature in the 190-210 joints, short time for 230 gqf-c60 bridge expansion joints, the temperature shall not exceed 2h, should pay attention to more than three in the wind, the temperature less than 10 under the weather, not construction, for a different amount of stretching, that depending on the notch size, bridge expansion joints bomb material per meter of plastic body material, in fact, the construction process can be roughly in accordance with grooving, clean tank, drying notch, adhesive coating, heating gravel, paving gravel, pouring RS line with rubber, leveling is complete. For ease of calculation analysis and practical application, used to be the bridge structure temperature changes due to the above causes broken down into two parts. Bridge expansion joints linear and nonlinear temperature changes temperature changes in the design of the bridge structure, should consider the effect of temperature, telescopic structure which accounts for bridge expansion joints linear temperature changes caused by the bridge structure stretching all the vast amount of section. Linear temperature variation analysis of the role of the bridge structure, locked type to determine temperature range of the bridge structure, the highest and lowest values ??of effective temperature effective temperature. gqf-c60 joints bridge expansion joints _ _ HaoTong company factory outlets provided by Hengshui HaoTong Rubber Company. Hengshui Hao-Engineering Rubber Co. (www.htgcxj.com) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement through innovative ideas will lead Hao engineered rubber and you hand in hand into the brilliant, for a better future!