[Bridge expansion joint] bump prevention BEAM special design: beam ends to have sufficient rigidity to meet operational role in the process of repeated loads. The design process to use proper stretching distance to ensure the normal operation of telescopic device to use. [] A reasonable selection of bridge expansion joint expansion joint expansion joint device selection means the most important is the telescopic device itself stiffness and mass. [Ideal] bridge expansion joint devices must meet the following requirements: (1) meet the structural beams and displacement between the upper beam and between the beam and the station; anchor (2) telescopic device is solid and reliable, durable, able to resist mechanical wear, impact; (3) the vehicle stationary, comfortable; (4) to prevent the infiltration of rainwater and rubbish; convenience (5) to install, simple GQF-F80 bridge expansion joint products, easy to check and easy to track maintenance workers operate. [] Apparatus bridge expansion joint anchor bars in prefabricated beams (board) and the end of the back wall anchor bars telescopic device is buried under two different circumstances. The general design is symmetrical with respect to a given bridge width center of the beam (plate) end portion embedded steel, is embedded in every piece of steel beam position (board) are not the same inside, to the construction more difficult, and therefore anchor bars should be symmetrical to each piece of beam (plate) centers set up, this should give full consideration in the design. [] Construction of bridge expansion joints to ensure that the role of anchor bars. Exclusively in the pouring 8 ~ 10 cm thick concrete deck setting is not desirable, it does not actually make the positioning angle telescopic device securely with the beam (plate) and the back wall of concrete links into a whole, the formation of unstable hidden GQF -F120 bridge expansion joint sales, require construction seriously. [] Bridge expansion joints installed specific requirements: bridge expansion joint devices and height control between -2mm-0, the transverse flatness less 3mm / 3m. In practice, it may be insufficient local pavement roughness, targets difficult to achieve the above requirements, then the first to try to meet the flatness along the bridge, and secondly to meet the flatness of the transverse direction, and the uneven places to be arranged in the parking trail, to ensure comfort parking. [] After the completion of the bridge expansion joints positioning, welding positioned immediately reinforced steel rings in the welded portion to cut off the telescopic device registration plate. Note telescopic device rings and the back wall of reinforced construction. Ministry of embedded steel (or round 16 Reinforced) welding using single-pass welding, weld and so on at the same time should meet the regulatory requirements. After [] in place to complete the bridge expansion joints and clean, the field technician inspection bridge expansion joints, after the approval of the supervising engineer concrete construction permit before proceeding to pouring concrete. [C50] bridge expansion joints pouring concrete bridge expansion joints model GQF-F60, C50 concrete used gravel, sand, water, cement and additives etc. Mix strict implementation of construction. Concrete mechanical stirring, to ensure uniformity of concrete. Because slotted shallow notch, the use of plug-in vibrators Plate vibrators peace with the construction, pay attention to the construction of the plug-in vibrators insertion point spacing and flat vibrators drag speed and lap in construction ensure vibration compacting concrete. Installation seam ends should adopt the steel template to ensure end clearance straight. Before pouring the concrete, the gap in the expansion joints, application of plastic foam desert or equivalent gap filling, pouring concrete to prevent the gap closed, the impact stretching. Bridge expansion joints, GQF-F60 type bridge expansion joints, rubber-Run-Run Companies by Hengshui Rubber Co. project. Hengshui-Engineering Rubber Co., Ltd. (www.grgcxj.cn) (www.grgcxj.cn) is specialized in "earthquake spherical steel bearing, one-way two-way sliding spherical steel bearings, ball joints fixed elastic damping bearings," the enterprises, companies adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Wang.