Combined large seam modular expansion joints Guangzhou Air Transport Co., Ltd., the predecessor of the Guangzhou-cheng Rubber Technology Development Co., Ltd., a professional to undertake all types of telescopic equipment installation engineering, business covers Guangdong, Hainan, Hunan, Guangxi and other highway stretch equipment installation project started in 2002 to undertake a telescopic device manufacturing operations, assisting many famous manufacturers and processing and production business, product quality by the parties praise. Due to the rapid development of domestic highway construction, the gradual strengthening brand awareness, and therefore established the Guangzhou Air Transport Ltd. in 2011, the company registered capital of 30.08 million yuan. Production base is located in Guangzhou Zengcheng District, fixed staff of 153 people, with a total area of ??100,000, of which the storage area of ??50,000 square meters, can accommodate up to 50,000 meters joints. The company's existing production line six joints, the average daily production of expansion joints 300 meters, the annual output of up to 50,000 meters, the production base has specialized production technology and inspection personnel, production personnel can be deployed at any time, there is no problem in production. Has produced a number of bridge expansion joints experts, senior engineers and technicians. The company also is equipped with a professional installation and bearing replacement bridge expansion joints, bridge strengthening, lifting of the professional team. The company management and engineering and technical staff from the subordinate state-owned enterprises in the same industry, have relevant qualifications and qualifications. The company mainly produces bridge expansion joints (modulus telescopic device, BEJ resin telescopic device, TST seamless thermoplastic elastomer highway bridge stretching devices, SCF comb joints, profiled steel joints and large combination of various types of joints), bellows, flexible concrete and quick-drying concrete filler professional telescopic device, and rubber water stop and other products. Guangzhou Air Traffic Technology Co., Ltd. has passed ISO9001 quality management system certification, the products have nationwide coverage, expansion joint annual output has reached 100,000 linear meters. The company set production technologies and processes, by domestic and foreign companies and experts, have reached the advanced level, and passed the inspection by the State Ministry Testing Center, won the Guangzhou Municipal Bureau of Industry and Commerce issued the "Shou contract, re-credit" honor certificate. Company's current products are mainly sold to the highway project in Guangdong Province, Hunan, Jiangxi, Guangxi and Guizhou provinces. Especially in the Guangzhou-Shenzhen expressway along the river Lot A2, Tan Lei and big bangs high speed projects total package to get points and owners recognize and give a good evaluation of the written opinion. Before the Guangzhou Asian Games, the many urgent needs of urban roads construction, because of past production and installation of construction in Guangzhou City, the recognition of the construction unit, specially invited to participate in the installation and construction of our city bridge expansion joints, at this time Our outstanding performance in construction, all according to the requirements of the total package quality and quantity to complete the task. The company has a pioneering leadership, a group of high academic standards of engineering and technical personnel as well as hardworking and dedicated management team, all employees will be scientific management, rigorous and realistic attitude and integrity of reliable service for domestic and foreign construction projects contribute to the development. Modular expansion joints is the use of rubber and steel or a combination of steel, able to adapt to a larger amount of deformation. Combination of joints (or Modular expansion joint) is the use of rubber and steel or a combination of steel, able to adapt to a larger amount of deformation, bridge and bridge expansion joints should be used to this. Combination joints take many forms, but also more complex structure. Such telescopic device, which have in common that they were all constructed by a V-shaped cross section or other cross-sectional shape of the rubber seal (tape), the engagement in the sealing body consisting of telescopic beams and the contoured edge of the steel beam. Shaped steel beam directly bear the load of the vehicle, its height should be determined based on the calculation, but not less than 70mm, and should have a strong anchoring system. Assembled into a variety of stretching the amount of products according to the demand and the rubber seal (with) the number of processing. When using a continuous deck construction, continuous partial deck is easy to crack. In order to improve the stress state of the bridge structure, can be simply supported - continuous structure, so that multi-span simply supported beam under a dead load of the system in a simply supported by force, then two adjacent end of the beam for full consolidation treatment, second dead load and live load system is under continuous stress, avoiding the disadvantages of simple easy to crack a continuous deck, and make the structure more exhibits characteristics of continuous girder bridge, suitable for a good foundation occasions.