Hao-engineering rubber, truss support reaction force calculation, truss bearing provided by Hao-engineering rubber. We are Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) located at: Hebei Hengshui specializes in: grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, spherical steel bearing basin bearing installation should pay attention to alcohol before the event bearing installation applications carefully scrub each slip surface, wipe the PTFE slide after storage tank filled with poise and attention to grease lubricant grease cleaning, for Note the ramp bridge grease oil tank should pay attention to skid. Pot bearings top and bottom plates are available when welding or anchor bolts embedded steel on both bottom and top surface of the pier, when welded, should prevent burns concrete, install anchor bolts, which shall not be greater than the height of the exposed rod the thickness of the nut, steel truss girder bearing embedded in the ground at the bottom of cast, should be based on the temperature when pouring, tensioned prestressed concrete shrinkage and creep effect on the beam length. Set design support center relative to the pre-bias values ??according to each specific operation lesson thought standards. Installation and construction truss ball bearing bearing product manufacturers, the basic requirements of ball bearings installed. When the ball bearing factory, the manufacturer should stand leveling and tighten the coupling bolts to prevent the occurrence of bearing rotation and subversion in the transport and installation process, the manufacturer is also available on the use of units of the preset angle and displacement amount, is pre-adjusted in the assembly. Once the changes in the new situation should be promptly cleaned or repaired truss stand outside and check the reason from the degree of change and the surrounding circumstances, as soon as possible to make a judgment whether to repair and strengthen the daily work style is very important. Bridge bearing damage causes are many, generally considered the forces acting on the bearing and deformation often exceeds the design requirements exceed the design requirements is the main reason, while imperfect construction and quality management is also one of the reasons, therefore, in the design should take full account holder force, displacement and use of the environment, but also must ensure the construction quality. The main aspects of the type of bearing damage and its causes can be summarized as follows: bearing itself bearing itself deformation due to structural deformation of the main bridge curved or diagonal truss bridge support reaction force complex calculation that generates no place in the cradle uniform stress concentration. Not dense or mortar base plate corrosion, processing quality control is lax, bearing itself is flawed. Bolts, nuts and shedding of the construction there is no deformation when tightened, corrosion, deformation, vibration is considered insufficient. Sliding surface or rolling surface corrosion.