We can refer to the standard table of railway bridge plate rubber bearings. When installing a T-shaped bridge, if the plate rubber bearing is wider than the bottom of the beam reinforcement, a reinforced concrete cushion or thick steel plate larger than the support should be added between the support and the bottom of the beam reinforcement as a transition layer to avoid the support Partial compression, which constitutes stress concentration.
The accurate positioning of the manufacturer of the PTFE slide rubber bearing first puts the bearing and the supporting cushion stone into accurate positioning as planned. When the beam is dropped, the longitudinal axis of the T-beam should coincide with the base line of the support; the longitudinal axis of the slab beam and box beam should be parallel to the base line of the support. In order to accurately drop the beam, when setting the top span slab beam or hollow slab beam, you can draw the cross bearing base of the two supports at the bottom of the beam, and mark the bearing base line of the two supports on the end elevation of the beam. Lead line, when the beam falls, make it coincide with the azimuth base line on the abutment.
In the future, the number of spans can be based on the top beam of the list. When the beam is dropped, it should be stable to avoid compression deviation or initial shear deformation. When using reinforced concrete cushions or thick steel plates with epoxy mortar and beam bottom bonding, use PTFE slide rubber bearing manufacturers. The larger bearing capacity of the bearing should be consistent with the reaction force of the bridge fulcrum, and the allowable error planning should be ± 10%; the PTFE slide rubber bearing should be horizontal equipment . And the upper and lower steel plates should be set, and 5201-2 silicone grease should be coated between the manufacturer of the PTFE slide rubber support and the stainless steel plate, and a dust cover must be installed after the equipment; The stainless steel plate that is in contact with the PTFE slide plate can not be set on the bridge pier or light-proof cushion cliff stone.
For curved, sloped, inclined and wide bridges, circular plate rubber bearings should be used. Highway bridge engineering should not use rubber bearings with spherical crowns or slopes. When the slope of the longitudinal slope of the bridge is not more than 1%, the plate rubber bearing can be directly set on the pier and abutment, but the thickness required for the influence of the longitudinal slope should be considered. When the slope of the cross slope is greater than 1%, pre-embedded steel plates (plus wedge-shaped steel plates), concrete cushions (pads with slopes) or other methods should be used to level the bottom of the beam to ensure that the support is flat. Plate rubber bearings should be checked according to the relevant regulations of D62 and can only be used after the inspection meets the requirements of the regulations.
With the continuous improvement of scientific skills, rubber support manufacturers have begun to pay attention to skills when they produce goods. This is a specific performance of advancing with the times. No matter what it is, it needs to be guaranteed by skills. This is an important reason why manufacturers win the consumer market. The rubber bearings produced by Hebei Tushun Rubber Products Co., Ltd. are sold all over the country, and we can use them well.
