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. The role of a laminated rubber bearing (or load) effect standard value, weight bearing reaction force for 380kn rubber bearings, auto load reaction force for 290kn rubber bearings gjzf4, weight and vehicle load reaction force for 670kn, the temperature drop , concrete shrinkage and creep bearing shear deformation caused 16.5 400 rubber bearings, 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, the weight of the pivot angle of deflection 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 bearing bridge rubber bearings, single rubber thickness is 8mm, total rubber layer is 45mm, bearing steel stiffening short side length of 240mm, bearing stiffened plate length 290mm, hair flat area of ??75000mm, bearing capacity factor of production compressive model. With the development of technology, highway bridges, bridge bearing types are constantly updated and increased until the 1960s, we can say the larger highway bridge bearing almost all type of steel reinforced bearing drink concrete supports, small span bridges almost exclusively simple method for processing (such as oil blankets, etc.). With the development of the chemical industry, the emergence of the use of PTFE slide rubber bearings drink plane sliding bearings, by the early 1960s began, laminated rubber bearings and rubber bearing basin gradually into the development and application, in particular to the 20th century, 80 to 90 years, have worked out a highway bridge culvert design standard drawings (1980). transportation industry standard "highway bridges laminated rubber bearing specifications series" (JT 3132.1-88), "highway bridge technical conditions of laminated rubber bearings "(JT 3132.2-88)," highway bridge laminated rubber bearings mechanical properties of the finished product inspection rules "(JT 3132.3-90) and" highway bridge pot bearings "(JT 3141-90) issued and implemented, so that basin branch Block soon became the main highway bridge abutment of the form. Abroad in the 1970s started to develop spherical bearings, and soon in the curved bridge applications. Germany prestressed concrete bridge built in recent decades has been the use of bearing condition survey results show that in 1964 ago, 100 percent of the bridge with steel supports, from 1958 began to use pot bearings, 1970 after began extensive use of pot bearings, pot bearings and bearing all proportion the amount is growing. Hao-engineering rubber, rubber bearing gjzf4, rubber bearings supplied 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!