Sliding surface or rolling surface corrosion of the main reasons for the deck, defense, poor drainage, causing water to enter the sliding surface or rolling surface corrosion. When the hinge and roller cracking the main reason, such as to limit the transverse components located in the center of the hinge or the rollers, while relying too close if it will produce cracks. Crack and fall off the roll axis, due to shrinkage of concrete, creep displacement of more than design, aging and cracking, aging and cracking of rubber bearing steel grid bearing the main beam chassis construction or bad In individual position over compression cracks. Bearing steel grid strict quality control process causes early aging of rubber, rubber layer cracking, spalling. Lifting means deformation, mainly because of the deformation floating means hands over the role of the complex bridge design to withstand the force and displacement of the deformation. Deformation limit device, the deformation of the main stopper, steel grid bearing selection and arrangement inappropriate, shrinkage of concrete bridges, creep generate additional shrinkage. Construction error generated during deformation, the same support line set up multiple steel grid bearing, due to the gap between the upper and lower transverse bearing inconsistent concentrated force acting on a bearing and deformation. Prestressed concrete bridge of the Bay Bridge or the occasion, the amount of compression deformation due to the tension caused by poor control of the bridge fixed bearing, displacement restrained steel grid bearing upturned deformation. Horizontal seismic load bearing steel grid structure on the upper top surface generated pier combination 康维刚 degrees, powered by a structure designed to calculate the elastic stiffness basic cycle bridge, check count of the amplification factor pot rubber fixed bearing, together The total weight of the upper structure, an important type of correction factor, see the highway engineering seismic design specifications, horizontal seismic coefficient, seismic loading pier, pier due to the weight of solid particles in the pier body horizontal seismic loads. Pier basic modal participation factors, the relative horizontal displacement of the steel truss segment bearing piers fundamental mode at the center of gravity. Pier identity segment of gravity, the water level of seismic load fixed bearing, horizontal seismic load of the upper structure of the top surface of the laminated rubber bearings produced. Earthquake equivalent horizontal seismic coefficient, steel truss design bearing damping coefficient damping design pier plastic hinge bearing fixed bearing promise when bent pier damage calculated by the formula to determine, when bearing steel grid pier damage occurs by bending transitional destroy or reduce damage to the shear failure of the funds raised to 1.0 when the reinforced concrete piers limit displacement, reinforced concrete roll yield displacement. Hinge bearing fixed bearing, fixed bearing, Hao-Hao Rubber pass by Hengshui 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!