Sliding surface or rolling surface corrosion of the main reasons for the deck truss bearing rubber, defense, poor drainage, causing water to enter the sliding surface or rolling surface corrosion. Hinges and rollers main reason for cracking, such as to limit the transverse member is provided in the hinge or the rollers when the central grid rubber pads, if one side is relying too close to cracking. Crack and fall off the roll axis, due to shrinkage of concrete, creep displacement of more than design, steel grid bearing aging and cracking, aging and cracking of rubber bearing the main grid plate rubber bearings, beam or base construction is bad, too much compression on individual positions 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, because of the tension caused by the compression volume control is not good, displacement restrained steel grid bearing upturned deformation. Deformation or rupture of the main bolt, bolt strength or lack of good material. Not long enough or screws into the anchor well. Bear reaction force insufficient stiffness of anchor bolts fatigue. Long-term repeated action live load fatigue. Although difficult to find in appearance bearing changes, monopile sliding parts to wear or material aging performance degradation may mount reason, in this case, bearing steel grid should also work to do it too an appropriate judgment, the general standard shown below. Degree bearing steel grid survey quite fast. As the administration or management of the bridge, you must stand by the extent of damage to the steel grid survey, and the results of the survey, consider the characteristics of the bridge structure connected, after the use and size, the need for its repair, repair or strengthening the method is necessary to make the right judgments, steel truss bearing damage to determine the work program to check the process flow. Steel truss bearing damage assessment procedures, assessment of damage on bridge bearings procedures currently curing specifications for highway bridges and culverts bearing function has a relatively clear evaluation criteria. In China's railway sector has assessed standard railway bridge and tunnel building. Grid bearing rubber | Leshan grid bearing | 13833855982 Tong Hao provided 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!