Once the changes in the new situation should be cleaned or repair outside damping steel bearings and check the degree of change and its causes from the surrounding circumstances, whether made early repair and strengthening of the predicate is very important bearing steel grid daily work. Causes damage to the bridge bearing steel grid are many, generally considered the force acting on the bearing and deformation often exceeds the design requirements exceed the design requirements is the main reason, while the construction and quality management is one of the reasons imperfect steel structure bearing manufacturers, therefore, should be fully considered in the design of steel grid bearing force, displacement and use of the environment, but also the need to ensure construction quality. Steel truss bearing types and causes damage to the main aspects can be summarized as follows: bearing steel grid itself bearing deformation due to the structure itself, the main reason for the deformation force curved bridge or ramp bridge complex, in steel mesh rack mount at uneven stress concentration. Mortar base plate is not dense or corroded steel bearing seismic processing quality management is lax, bearing in itself flawed. Bolts, nuts and shedding deformation not tightened construction, corrosion, deformation, vibration considered inadequate. Sliding surface or rolling surface corrosion. Given in the Highway Code for Seismic Design of steel grid is calculated using seismic load bearing steel bearing, in shock absorption design, seismic loads can be the same formula to calculate the form, this time, the upper structure of steel horizontal seismic load bearing structure of the top surface of the grid generated by the proposed tie-damping design ideas put forward nearly 100 years of history, especially in the second half of the 20th century, with the accumulation of a large number of earthquakes recorded data, steel grid holder in the late 1950s, New Zealand, Japan, the United States and other developed countries for more damping bearing technology put a lot of manpower and resources to carry out in-depth research, system and achieved remarkable results. By the early 1970s, New Zealand and other countries of the first researchers to develop a damping device use continues to mature inelastic dynamic structural analysis method, developed a successful large-scale test equipment, steel grid bearing in order to use the damping Progress has been made to develop the device major breakthrough, making the shock absorption technology to explore the theory and experimental research stage, the stage of development to promote the use and application of the model. Steel bearing design, Liaoning steel bearings, 13833855982 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!