Experimental study on mechanical properties of bearing ball of roads and bridges, mainly in order to develop and revise highway bridge design specifications and provide a reliable basis for the transportation industry standard two trials conducted several studies in the country has undergone the following three The main experimental stage. Pilot phase ball bearings and started to explore the early 1980s, ball bearings appear nearly ten years and used in China, and has been widely used in roads and bridges, but in the bridge design specification relating to the ball Content-type bearing design calculations prescribed rough, but yet our own rubber bearing product standards, therefore, to amend the 1975 bridges and culverts norms, from November 1980 to March 1982 by the Shanghai Municipal Engineering Design Institute Highway Planning and Design Institute (formerly the Ministry of Transportation Planning and Design Institute) commission chaired the four categories, 51 kinds of different specifications of the 155, the smallest form factor of 1.75 spherical steel bearings, up to 15.87, a flat area 100mm × 140mm, the maximum test research for small-scale 150mm × 200mm rectangular ball bearing. By testing the mechanical properties of ball bearing have a better understanding for the selected revision of the design parameters provide a practical basis. Ball bearing amount is too large spherical steel bearing seismic slip way, affect the quality factor and great, so you can not put a lot more work ahead of yellow rubber bearings for posterity, although the design when considering a replacement measure, but replace it Multi-plate system that is called the mount easier said than done, therefore, the ball bearing bridge design should put a good man and expensive first hurdle. In revising the bearing industry norms and standards of bridges and culverts, the project team for disposal information and international standards, foreign as well as domestic standards for all willing to achieve the relevant technical levels were fully reflected, revised standards, and norms solicit Bright system design, construction, production, management and the opinions of experts, also sought the views of system-level detection, municipal, quality supervision, the manufacturer's advice. A type of ball bearing type belong rubber bearing, in earthquake-prone areas must consider earthquake building bridges so that when the local earthquake can make a bridge to maintain its function, so as to ensure the smooth progress of relief and post-earthquake work. Reduce the losses caused by the earthquake, the ball bearing damping design, rubbing the bridge structure can support up unidirectional sliding seismic steel spherical bearings, ball bearings make structural vibration in the long period of the same time, by LRB vibration energy dissipation, thereby reducing damage to the bridge structure seismic crews. Unidirectional slip earthquake spherical steel bearings, spherical steel bearings, 13833855982 provided by Engineering Rubber Co., Ltd. Hengshui HaoTong. Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement through innovative ideas will lead Hao engineered rubber and you work into the brilliant, for a better future!