Hao-engineering rubber | gyzf4 laminated rubber bearings | laminated rubber bearing is 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 bearings with steel development of the highway bridge technology, the type of bridge bearings are constantly updated and increased until the 1960s, we can say the larger-type highway bridge abutment bearings are almost always made of steel reinforced concrete support to drink Block, for 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, 100 percent of the bridge with steel supports, from 1958 began to use pot bearings, 1970 after began extensive use of pot bearings gyzf4 laminated rubber bearings, pot bearings and bearing all proportion the amount is growing. General rubber material that can be tested in accordance with the provisions of the standard rubber bearings, while the steel laminated rubber bearings, the strength, elongation, toughness, durability and weather resistance, etc. to confirm. Rubber bearings bearing structure using rubber core, deems necessary pilot project, assuming the selected pilot projects and test conditions can be determined based on the performance of bearing requirements. Test specimen ball crown laminated rubber bearing, according to test purposes, the necessary accuracy, the ability to select test equipment. In previous studies using bearing structure of the new method, you can refer to the test to verify its performance. Steel bearings use steel bearings gjzf4 new laminated rubber bearing, generally considered necessary for the pilot project, in accordance with the requirements of bearing performance, the selected pilot projects to test conditions and assumptions. Furthermore, according to past bearing structure, the study of new uses, and I hope the reference pilot project to verify its performance. 1, bridge bearings supporting the bridge span bridge bearing structure, and load pass piers, abutments components. 2, modulus of elasticity modulus of elesticity material unidirectional tension or compression and stress and strain showing sexual relations, the cross-section corresponding to the normal stress and normal strain ratio. 3 shear modulus of shear modulus unidirectional shear material and strain linear relationship between the ratio of shear stress and the corresponding shear strain on the section. 4 deformation modulus of deformation modulus unidirectional material tension or compression, and the stress and strain of linear and non-linear or partial part nonlinear relationship between normal stress on the cross-section and the corresponding normal strain ratio. 5 coefficient of friction coefficient of friction to the pressure ratio of the two objects in contact with the French friction surfaces.