Bearing steel grid corrosion of the components are the main reason, anti-corrosion and water leakage and produce bad flooding, causing severe rust. Cleaning is not timely, adequate, there dust deposition. Anchor bolts cut, pull out the main reasons are as follows, bearing steel grid is set incorrectly, the range of movement of steel truss bearing prolapse. Less than double the number of Romanian and buying length. Bear no negative bearing reaction force set up fixtures. Mortar filled not dense. Base fill empty mortar, cracks, filling mortar base empty, mainly cracks; no shrinkage mortar filling agent is not dense mix well, good waterproofing and drainage, water immersion internal cracking. Crushed concrete base, peel, crushed concrete and steel truss bearing the main reason for stripping edge distance and lack of seat base Jiaqing steel, steel grid inadequate support and seat cushion stone base size. Mortar filled not dense. Floor junction crack or break under the main reason for the long-term effects of heavy traffic loads, bearing steel grid floor junction fatigue cracking or breaking. Bolt deformation or fracture. Seismic loading piers, pier entity by weight Piers particle damping horizontal seismic load bearing, flexible steel pier by pier body weight bearing damping, since the calculation requires Yongda power factor problems developed because spring shock absorber damping bridge abutment design, seismic load calculation, according to the natural cycle of the bridge, the nature of steel grid bearing different venues, to identify power amplification factor, and suggested bridge cycle is calculated by the following formula . Horizontal loads to the force of gravity as a node node bearing steel truss bridge horizontal displacement of the grade structure of the pier were taken just elastic stiffness and yield stiffness. Steel truss bridge bearing damping device is composed by a separator damping bearings, spacers used to provide flexible support for the bridge structure, the bridge structure to resist horizontal forces, the group produced a bridge too large, while dissipation ability to absorb vibrations, the two then that could be a whole, may be separately provided on the bridge structure. Currently the world's common steel grid bearing type and separation can be divided into two types as a whole. The separation type bearing steel grid is usually generated by a large horizontal displacement to the ordinary rubber bearing steel grid structure drink some form of combination, according to our research report provides general classification. Spring shock absorber damping bearings _ _ bearing manufacturer direct products offered 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!