Bearing weight bearing structure caused by the reaction force of the standard value of 0.5 times the vehicle load (included in the impact factor) support reaction force due to the standard value; see Section 8.4.2 specification JTG D62-2004, but excluding car braking force caused by shear deformation, the plane bearing gross area, the standard values ??braking force caused by the car load. PTFE slide rubber bearing friction coefficient should meet the following requirements in some of them. The design calculation example in order to help readers understand the bridge design specifications of the relevant provisions "of reinforced concrete and prestressed concrete highway bridge design specifications" (JTG D62-2004), basically in accordance with the provisions of the order specification requirements. Basic data design (according to the specification section 8.4.1) of the use of the seat installed in the warm area, so the concrete abutment contact at room temperature, the friction coefficient σ = 0.3; bearing an average compressive stress of 10mpa. A laminated rubber bearing role (or load) effect standard value rubber bearings gyz200, weight bearing reaction force for 380kn, vehicle load reaction force for 290kn, weight and vehicle load reaction force for 670kn, temperature drop, concrete shrinkage and bearing shear deformation caused by creep 16.5, automotive braking force for 3.2kn, bearing directly located at 0.5% below the bottom longitudinal beam, along the longitudinal direction of the reaction force is divided into: weight and vehicle load 400 rubber support Block, weight deflection angle of the pivot φ = 0.0023rad, bearing top surface generated by the longitudinal beam angle position φ = 0.005rad, laminated rubber bearing geometry and mechanical properties. Supports use of 250mm * 300mm * 63mm rectangular laminated rubber bearings, single rubber thickness is 8mm, total rubber layer is 45mm, bearing steel stiffening short side length of 240mm, bearing steel stiffening truss length of 290mm rubber bearings, hair flat area of ??75000mm, bearing factor of production volume compression model. Elastic bearing type called elastic support type, is the use of shear deformation of rubber bearing horizontal force will pass to the cradle type substructure. Thus, the horizontal force is given to the rigidity of the rubber bearing and the upper and lower portions of the structure is calculated. Meanwhile, as the sliding mechanism of the horizontal displacement of the upper structure, suitable for sliding-type rubber bearing, generally do not have elastic support type, but made a sliding bearing type. Elastic rubber bearing support structure, as the level of force structure to withstand earthquakes, generally have the following types. Seismic horizontal forces dispersed seismic horizontal forces dispersed rubber bearing rubber bearings, is the use of rubber bearing shear deformation of the upper structure of the inertial forces dispersed structure of multiple substructure, rubber 1-7 Fig. When the seat is used on multi-span continuous structure constructed (E for horizontal forces dispersed bearing). Hao Tong Engineering Rubber _ grid rubber bearing rubber bearings _ provided by Hao-engineering rubber. Search for "grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, spherical steel bearing" fly suppliers, network operators choose to have a full alliance Certified: Engineering Rubber Co., Ltd. Hengshui HaoTong (www.htgcxj.com), trustworthiness and reliability, "business alliance customer service" on page now click on live chat with us now!