[Opinion] bridge expansion joints and bridge expansion joint damage repair [] means from the point of view of practice and relevant information, regardless of W, V-type, hollow rubber body type can be used. Colloid is not wrong in itself, but in the entire telescopic device structure design is reasonable. West Germany Maurer's telescopic device, in recent years, the application of more TST telescopic device design is reasonable, while driving it has a high stiffness, deformation of flexible time and temperature variations. From now the construction of a bridge expansion joints [view] means [D160] factory direct bridge expansion joints, the flatness of the comb plate telescopic device is better, not only because adding a sufficient number of plates to increase the stiffness of the deformable body, and there are a sufficient number of rivets to make body with retractable bridge linking deformable body is strong, not like the original hollow rubber expansion joints as easily prolapse. And improved construction techniques, can play a waterproof, dustproof effect. The disadvantage is deformed like inflexible. Damage in the form of bridge expansion joints [by] the Hulunbeier of six routes and 15 medium-sized bridge the technical condition of the survey, found that the reinforced concrete bridge expansion joints are different degrees of damage, breakage rate of more than 40%. The main form of expansion joints are: zinc metal joints, steel expansion joints, rubber expansion joints. Failure phenomena manifested in joints throughout the fall, and down through the deck beams to cover lost link between the hole and the hole; steel welded joints open, the wheels grind into the seam, so joints are packed, losing stretch effects;] [bridge expansion joints on both sides of the deck coverings wheels crushed, broken concrete was squeeze into the seam, and some clogged dirt, debris, so that would not achieve the telescopic effect; the impact of the role of the vehicle causing the beam The ends of the broken joints [D40] single stitch price, so the width of the individual joints of the bridge to reach 10 ~ 30 m. [Bridge expansion joint replacement and improvement] 1. material selection based on [this] to replace bridge expansion joints and project schedule tasks, construction time can only choose a relatively small amount of traffic night; the choice should be based on concrete material meet the rapid setting time is short, high early strength concrete construction and convenient fast. A complete set of continuous seam, replace bridge expansion joints [] Currently, the continuous seam setup is not perfect, the need to improve the design. (1) the addition of continuous galvanized iron joints usually coated with two layers of asphalt highway bridge expansion joints [D80] single slit, in the middle of laying a layer of oil felt (the two oil a mat), or coated with two layers of asphalt emulsion, in the middle of laying a layer of geotextile (the two oil-cloth). (2) Adjust the upper part of the steel structure of the set of prestressing steel T-beam portion of the top surface of the seal anchor appropriate adjustments needed in order not to extend the principle of the top surface. Otherwise, the extension will prevent the exposed rebar sewn on two successive oil a mat or two of oil a cloth and galvanized iron sheet settings. (3) Two oil a carpet, two oil-cloth set the width of two oil-mat, two oil-cloth set the width required in the design of text made clear, the width should be about 50 cm. (4) lightweight packaging material should not be used within a continuous seam stuffer lightweight packaging materials, mainly in order to bring the oil or geotextile felt no less flexible and not be bursting (in fact, it is difficult to achieve the desired effect). The wide range of material, and no bridge dedicated product, it is chaos expansion joints used in construction, to cover up the beam (plate) debris inside seam, and even pieces of hard blocks. [Because] bridge expansion joints in the addition of galvanized iron joints, optimizing the use of the effect of two oil a mat or two oil-cloth, lightweight packaging materials can not. [D80 highway bridge expansion joints single seam joints _ _] [joints] Guangrun sell Guangrun provided by Hengshui Rubber Company. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) (www.grgcxj.cn) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangrun Rubber Company and you work into the brilliant, for a better future! You can also access (www.grgcxj.cn/supply_details_48604685.html), for more information about the company.