Buy preferred Hebei Chun passers bridge expansion joints, professional quality, complete

E-type bridge our supply manufacturers Advisory COD, GQF a C type, GQF a Z type, GQF a L-shaped, GOF an F-type bridge expansion, GQF a MZL mold type bridge expansion devices, is the use of hot-rolled overall shape of the shaped steel bridge expansion joint design. GQF a C type, GQF an E-type, GQF an F-type, GQF a L-type telescopic device for stretching the amount 8Omm below the bridge joints, GQF a telescopic device MZL type is by the side beams, beams, beams and linked Modular bridge expansion joint institutions, and for stretching the amount of 80mm -12O0mm of large and medium span bridges. 2, design and manufacturing technology condition a, design load: The JTJ01-88 (1995) "Highway Engineering Technical Standards" provides a super car 20 loading design. b, shaped steel material used in the present structure of 16Mn steel bridge special steel tensile strength of not less than 480Mpa, the allowable bending stress of not less than 210Mpa. c, branched structure Cheng Hengliang use 16Mn or 45 steel, which allows bending stress of not less than 210Mpa. d, the remaining parts of steel can be used not less than 0235-strength steel. 3, the scope of the compound a, chloroprene rubber (CR) of the telescopic device is suitable for a temperature of 1 25 ℃ 60 ℃ regions. b, When using natural rubber (NR) telescopic device is suitable for a temperature of 40 ℃ a 60 ℃ areas. 4, structural features GQF-MZL type telescopic device outstanding feature is the load-bearing structure and the displacement control system telescopic device separately, both under stress interfering clear division of labor, so that not only guarantee the security forces, but also to ensure that the subject even when the displacement force. 5, retractable telescopic device to determine the amount of bridge stretching a direct impact on the amount of the calculated value telescopic device size selection. If the telescopic device size selection is unreasonable. Directly affect the results telescopic device. It should also be taken into account while selecting the beam telescopic device, the amount of clearance between the plates telescopic device size, to ensure that telescopic device and beams, plates fully anchored at both ends, in order to achieve the best results. When choosing specifications telescopic device, be sure to leave enough margin to ensure the use of telescopic device and durability. 6, after the bridge design unit in the choice of my company's expansion devices, for ease of manufacture, should provide the following information: a, cross-sectional view of the bridge (including cross slope, sidewalks, belts, railings position and size). b, construction telescopic device when the time to implement changes in the magnitude and installation temperatures. c, users have special requirements should be clearly specified. Note: If you do not provide positioning value, the company will be rated according to the maximum amount of stretching half compression product positioning factory. 7, telescopic device transport, storage and installation Transport telescopic device according to the design of all assembled, shipped by the manufacturer or user construction site. Transportation as it is longer than the allowable limit or for other reasons can not be transported as a whole, it can be produced using the method segments. After storage telescopic device delivered the construction site, the storage site should be as close to the installation position, and should be placed on a minimum of 30cm above the ground support. Install the same excellent telescopic device, a different quality of the installation, using the results and durability have significant differences. Telescopic device construction and installation quality assurance telescopic device is good or bad effect last key. a, telescopic device should be installed on Pavement good after, before stretching installations shall be of width, depth and reserved slot embedded steel inspection, to conform to the requirements telescopic device installation. b, clean up a notch, you must put all the dirt, dust and other unnecessary things all be cleared. After c, the gap between the telescopic device to check whether the installation of each beam temperature requirements, does not comply must be adjusted under the guidance of engineering and technical personnel, the gap between the beam each telescopic device meet the design requirements, and then adjust the placement of clamps to prepare for the installation. d, with asphalt on both sides of the elevation, with a lifting device to the telescopic device placed in the slot, so that the top surface of the telescopic device to adjust the elevation of the same road, the longitudinal, transverse slope should be consistent with the road bridge. position e, check the telescopic device, so that the telescopic device in position in the vertical direction of the slit rolls seam direction are in line with the design requirements, if at this time to individual embedded steel telescopic device is properly installed hinder, gas cutting can be cut off. After f, telescopic device is properly seated, the first retractable embedded steel anchor bars and reserve tank connected device side and welding can weld a time interval of a welding, and then the other side of the anchor bars above steps welding. When the telescopic device to confirm fixed, the fixture can be removed, then the remaining unwelded embedded steel anchor bars and fully welded, so that reliable telescopic device anchoring. NOTE: prohibited in the telescopic device in the beam, side beams of arbitrary welding. g, telescopic device is segmented if installed, the seams must be welded. Welded joints in steel manufacturing facility was ready, when two adjacent slits on the positive, you are ready to install. Each beam welding good after all the above steps anchoring. H, in 梁端安 installed templates that gap by telescopic device and reserved slot dimensions for production, the template should be very tight to prevent mortar into the displacement flow or flow into the control box beam end gaps. l, and then check the installation of the template tight seamless slot reserved for future clean, can be concreted and vibrated dense. Concrete and concrete structure where at least have the same strength, to keep the top surface clean telescopic device when pouring concrete. Diagonal layout and installation of telescopic device: To meet the river route is not perpendicular to the direction of the bridge needs can be anchoring bars and displacement control box diagonal arrangement, the amount of O is about stretching a variety of 80mm telescopic device and MZLI6O a 120Omm anchor bars and displacement modulus telescopic device control box horizontal tilt of welded shaped steel edge beam. Its anchor bars and the side angle of the beam with the direction of the inclination of the inclined bridge is changed. Hebei Chun passers Engineering Ltd. National Free Hotline: 400-696-3393 Tel: 0318-5820287 Fax: 0318-5261112 Mobile: 15333180287 QQ: 2252786736 HC Hair: jtgc1006 mail: juntu@hbjuntu.com Website: http: / /www.hbjuntu.com