[Grid computing rubber bearings] In fact, by the general formulas to analyze rubber bearings [grid], we can find that in addition to the friction requirements, PTFE slide bearings also require checking the following items: ① [Network rack rubber bearings] effective bearing area is calculated Ae = Rck__ bearing pressure standard value of finished rubber bearing truss manufacturers large favorably, vehicle load should be included in the impact factor __ bearing using phase average compressive stress limit, Take 10.0MPa this formula applies equally for PTFE slide bearing grid rubber bearings, PTFE slide bearings can be used to determine the size of the plane. ② [grid] rubber bearing vertical average compressive deformation conditions __ [] vertical grid rubber bearings __ average compression deflection angle of the upper structure of the top surface of the seat caused, as well as bearing directly set on not the underside of the beam is greater than 1% longitudinal slope, the longitudinal slope angle in the seat top surface caused (rad). Measured data show, tan value for concrete bridge ≥1 / 300; Steel ≥1 / 500. The actual value should be calculated based on the deflection of the beam. Ee__ grid bearing compressive modulus of elasticity of rubber bearings professional quotes, Ee = 5.4GeS2. Eb__ rubber elastic body bulk modulus, Eb = 2000MPa. This formula can be used to determine the total thickness te slider bearing rubber layer. [Grid] rubber bearing quality first! [Grid rubber bearings] In addition, the "shear deformation from meet to consider the conditions to be met," does not comply with the principle of PTFE slide bearing deformation, so no checking. "From the assurance of high quality compression stable grid rubber bearings considering national standards should be consistent with the terms" and "stiffening plate thickness requirements" and without checking, because all the qualified factory of rubber bearings can meet these two conditions (of course Plate rubber bearings and without checking these two). Seismic measures seismic design [grid] rubber bearing structural capability we do not have in order to avoid the occurrence of ductile shear failure, take a "strong shear weak bending" measures to deal with the relationship between the ability to bend and shear capacity MEMBERS problems. It is worth noting that, compared with non-seismic shear damage, shear failure under seismic action is different. To beam member, for example, in the larger earthquake, diagonal cracks form a cross beam end zone, the area is divided diagonal crack concrete, blocks the formation of a number of diamond and crushing will grow as ductility and intensified. [Grid] rubber bearing the most professional manufacturers recommend! Because of the cross diagonal cracks are essentially coincident with the plastic hinge zone, vertical and diagonal crack width will be increased with the ductility. Under the seismic characteristics of the beam end according to the force, is always greater than the negative shear shear shear zone under pressure are generally located in the lower part of the beam shear force, but because of the reciprocating action of the earthquake, the bottom of the concrete beams might have been peeling off the protective layer, thus weakening the shear capacity of concrete shear pressure zone; cross diagonal crack width is larger than the non-earthquake situation, as well as the opening and closing repeatedly diagonal cracks, broken concrete and more serious, so that the diagonal crack interface aggregate effect of degradation bite; concrete cover spalling and widening cracks will make the longitudinal reinforcement dowel action has some degradation. [Grid] price of rubber bearings! Because the frame shear failure always occurred in the end of the beam plastic hinge region, which requires not only at the front end of the beam to form a plastic hinge shear failure does not occur, but also to maintain the ability to shear plastic plastic hinge rotation required to reach earthquake degree, which requires more stirrups. At the same time, the role of shear plastic deformation in the beam end and no significant increase, but also further increase the stirrups described here are not used to increase the shear strength, but in order to improve the member shear failure when ductility up . [Grid] genuine rubber bearings guarantee! National standards of quality rubber bearing grid | grid rubber bearings | manufacturers cheap big promotion offered by Hengshui Rubber Co. Guangrun. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) (www.grgcxj.cn) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangrun Rubber Company and you work into the brilliant, for a better future!