[Slide] ball hinge support the basic requirements for concrete cement, sand, stone, water, Mixed agent mixed material quality and specifications must comply with the relevant technical requirements of finished steel sliding hinge support, according to a predetermined ratio with construction. Support cushion stone not appear dew angle, hollow, cellular, Ma surface phenomenon and any cracks. [Slide] specify the contents of a ball joint bearing "Highway Bridge Engineering Quality Inspection and Evaluation Standards" civil engineering (JTG F80 / 1-2004) Appendix D concrete compressive strength assessment are as follows: Recently, the highway bridge design, construction specifications have carried out amended to include concrete with strength grade nominal, and this standard and GB "concrete strength inspection and assessment" (GBJ 107-87) consistent. Strength rating C is a side 150mm cube specimen, according to standard methods for making and testing, compressive strength 28d age range of 95% guaranteed rate of the past relationship between the concrete grade M and the C = M-2, which units of Mpa [slide] ball joint bearing industry problem: more steel, more steel structure is a strategic national policy of resource use, development should be encouraged and strengthened. But the company did not return on short-term benefits, it is difficult to be widely used. [Slide] ball hinge support the concept behind the long-term planned economy, product refinement is not enough, the added value of a low sliding hinge support, the support base is far from strong steel structure. [Slide] ball bearing hinge largest construction market that is relatively backward, many stakeholders in the development of housing construction, design and use are in-depth, but rights, responsibilities and inadequate protection of private ownership. Finally, the rapid development of steel undertakings is conducive to the stable development of the national economy, we expect steel suppliers, steel companies and steel manufacturers together form industry alliances, and work together to enlarge and strengthen the steel industry, manufacturing strong, national will be powerful. Application of the sliding ball joint bearing steel beam steel structure Abstract: This paper introduces the steel widely used in the field of civil engineering, summed up the development and use of domestic and foreign steel, described the steel beams in the construction field more level, and the like by force mechanism design methods and probability limit state. Slide the ball joint bearing steel girder civil engineering sliding ball joint bearing light steel construction in some developed countries has been widely used in factories, warehouses, stadiums, exhibition halls, supermarkets and other building walls finished sliding hinge support, while steel itself has a light weight, high strength, fast construction and other unique advantages, so the top, large span, especially super-tall, large span steel structure is ideal. Steel ball bearing slide hinge system has great development potential and ideal prospects, steel girder as an important force components, the mechanical properties will be more complete in the future development and reasonable. A sliding ball bearing hinges are varied, in addition to the section above the main bearing form made a special presentation. In addition to some special form of bearing and functional improvements and additions are merged into a bridge abutment other forms of carriage on the basis of the above form. Currently on the market all kinds of Bearings manufacturer of self-improvement and development is also a range of new features, this is a developing trend, it can be said that a good sign bridge support technology development way sliding hinge support -DX, as long as we guide well, certainly a manifestation of a sliding ball joint bearing technology development and progress. However, these forms of support may say in the form of non-standard provisions, all the cautious attitude of the choice should be checked, if necessary, to further define its performance and reliability. We can predict there will be more new, full-featured and powerful bridge support and application appear in the future. Here is functionally similar to the further classification introduced.