[] Types of bridge expansion joints and bridge expansion joints presentation [] blind stitch joints Disadvantages:? Durability is poor. ? Easy expansion joints due to stress concentration levels of wear caused by irregular horizontal large cracks or dents. ? Is only available with a short-span bridges, stretching the amount of 5mm or less, and the traffic is not too large or live load. [Closed] bridge expansion joints seam small bridges span the desired amount of stretching its also small bridge expansion joints, it can be closed at this time to replace the open seam seam. Closed seam structure or site can take pre-production, packing can be squeezed from within or outside the scene hot water to fill the cracks. Closed sewn seam existing openings must be repaired or updated frequently used to, which is more commonly used pre-sewn closed. Common seam closed the following three: [] asphalt bridge expansion joints exposed to fuel expansion joints such deck joints, slit width of 1 ~ 2cm, middle watering asphalt, its vertical seam down, or the middle of the corners. To prevent asphalt whereabouts can be added to make the seal integrity and reliable Guangrun bridge expansion joints, the lower part of the canonization. Such expansion joints are generally applicable to the amount of 1 ~ 2cm bridge. Advantages:? Simple structure, low cost. ? Construction easy. ? When damaged, repair is easy D40 Modular bridge expansion joints specializing in the design, there are still plans to maintain traffic during repairs. [Bridge Expansion joints] asphalt consumption Disadvantages:? Water is poor. After the asphalt hardens elasticity will decrease over time naturally there is a gap. In particular, asphalt and bridge deck (or abutment back wall) is not easy to close, so that when the water will easily penetrate into the bearing. ? Life is short, poor durability. ? Can only be used for short-span bridges. ? Prone while driving beat, comfort is reduced. [Bridge expansion joints] Installation Notes:] [Bridge Expansion slots reserved for cleaning the deck surface layer of asphalt paving closed to traffic after the completion of the slots reserved for excavation. Firstly, thin with a basic accuracy of eye-catching colors marked reserve position, and then the crusher location of the expansion joints at the east and west sides of 50cm were broken, and then cutting the size of geometric nation treatment. Cutting should ensure that the entire edge of the deck Qi Pingshun asphalt surface, no defects. After completion of the slit to clean up all kinds of debris inside the slot filled, steel and other clean. Excavation should prevent contamination asphalt surface, and re-exposed parts of the notch concrete cutting hair treatment. Cutting the old bridge expansion joints [] after notching the original old joints were cut out, cut out joints when taking into account the special nature of the material, the application of oxygen-acetylene welding gas cut from the roots, to be completely cut is completed, you can Remove the old joints. Using grinding machine for grinding roots protruding parts processing, reserve after cutting steel keep consistent line on the site also has a deformed application to be processed hammer; the situation is still the site of the old joints debris should use fine steel to tick. ] [Bridge expansion joints during the installation, you should first clean cold mix asphalt and residual debris removed. The same model will be ready to install slot joints caused by lifting, lifting process should prevent the collision, oblique hanging, or improper lifting position Modular bridge expansion joints Professional tailor make joints bending deformation. To prevent deformation of the hanger spacing can be adjusted according to the situation or increase the auxiliary bracket, after the basic joints in place, adjust the center line and the center line of the reserved slot is consistent with the standards approved by two feet on both sides of the road outside of the elevation of its elevation and ends with a 3m straight foot flatness testing, adjustment. Modular bridge expansion joints _ _ Recommended bridge expansion joint device (certified merchants) provided by Hengshui Rubber Co. Guangrun. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) is specialized in the "seismic steel ball bearings, spherical steel unidirectional bidirectional slide bearing, fixed-elastic damping ball bearing hinge" of the enterprise, the company is adhering to the "integrity management , hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Wang.