Swiss soil 马格巴 (Mageba) telescopic device bridge expansion joints for the past 20 years the usual form. As a well-designed telescopic device such alternative products, bridge expansion joints that strip section (bird-shaped rubber band) mode, improvements in technology and development. Its reserved slot (Figure 5-21) and the corresponding series of technical design parameters and specifications listed in Table 5-9. Whether ribbon and box-section telescopic device, the same as the overall cross-sectional dimensions. They all have the same basic structure, and welded components are standard ST52-3 of manufacturing. A basic support system is the successful application of bridge expansion joints 20 years Mageba principle that each rigid steel beams welded to its corresponding joists (beams), this can be for all units and joists provide telescopic device supporting force transverse direction of expansion joints, expansion joints and through elastic friction bearing preload force to prevent tilting. Preloading the same time to strengthen the torsion elastic contact point for all the support and each unit. The main span of the bridge is generally in the form used within 16m, was recorded at 72, between the station back and approach slab MAURER expansion joints, or between the station and back deck, most appear sizes through crack or cracks, some of the circle into the pits, breakage rate is almost 100%, bridge expansion joints, usually in the 16m span bridge over the adoption, along 42 survey, a total of 116 single record total d80 steel expansion joints, bridge expansion joints where the loose, fall off serious damage has 56, accounting for 48% of the survey of the book, and another 60 different levels slightly loose, there's 52% failure precursor, only several main bridge stretching Interchange device is more intact, ruler version of telescopic device, such expansion joints along the bridge devices such telescopic device along a total of 20, including nine to appear bridge expansion joints cover screws loose fd80 bridge expansion joints, cover and just eat plate off, Hubei Shayang Hanjiang River Bridge main span 113m of multi-span continuous prestressed concrete beam bridge section ruler edition, ruler plate telescopic device damage loss, anchors exposed, market poke bad car tires, drivers complain incessantly . MAURER expansion joints, expansion joints Heihe, 13,833,855,982 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!