Bridge expansion joint device technology leader in the production of Beijing-assured of quality rubber expansion joints

Bridge expansion joint device technology leader in the production of Beijing-quality assured 18230181118 rubber expansion joints bridge expansion joint device since the end of the beam structure in weak position, directly withstand repeated action vehicle loads, and there are exposed to nature, subject to various natural factors, therefore, the telescopic device is easily damaged, difficult to repair the site. The reason is that telescopic device be damaged by many, are: 1, ill-designed beam end design failed to consider carefully, in the repeated loads, beam end damage caused by the telescopic device failure. Moreover, sometimes deformation amount calculating inappropriate, excessive use of telescopic pitch, resulting in breakage of the telescopic device. 2, the device itself issues telescopic joints insufficient member strength of the device itself insufficient stiffness of the anchor structure, resulting in varying degrees of damage in their operations. Telescopic device after pouring pressure filling material is not taken seriously, carefully selected, resulting in lower quality telescopic device operations, resulting in varying degrees of disease. 4, the construction and placement of construction joints, beam end joints distance is not completed according to design requirements, artificially zoom in and out, positioning angle position is incorrect, resulting in the telescopic device is not working properly. It will appear the following conditions: As from the small seam, rubber expansion joints arising due to overrun crush lobe jumping; the seam away from excessive shear loads and driving under the vehicle inertia, will loose rubber expansion joints with a positioning angle, producing another type of jumping. Telescopic device anchoring steel welded construction is not strong enough, or produce the phenomenon of missing embedded anchor bars to the expansion joint itself cause problems; well, after pouring a bad bridge deck expansion joint telescopic device is installed during the construction, use, under cyclic loads causing damage to joints. 5, continuous seam set inadequate expansion joints in order to reduce a large number of continuous beam or continuous deck. Continuous deck on the need to set up a continuous seam, continuous seam setup is not perfect, resulting in continuous seam damage, and produce bridge jumping. Continuous deck joints, width and depth of the deformation fake joints set not standardized, not unified, which to varying degrees affect the normal operation of a continuous seam. 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.