Shaanxi Zhongtuo Mining Equipment Co., Ltd. is a global supplier specializing in bridge stretching equipment, down-hole drill series, steel processing machinery, rock splitting equipment, grouting equipment, and pavement processing equipment. After years of hard work and development. We have established a solid foundation for providing quality services with many years of experience in mechanical equipment manufacturing.
Bridges allow roads, railways, or sidewalks to cross rivers, lakes, valleys, canyons, or other roads. Bridges are mostly fixed, but some bridges can be raised or rotated. Regardless of the type of bridge, the design and construction problem faced by engineers is to make the bridge structure strong and not sink or break due to the weight. There are several ways to solve this problem.
The cantilever bridge is a long and strong section, similar to a truss bridge, but each section is supported in the middle rather than at both ends.
Girder bridges: including simply supported slab beam bridges, cantilever beam bridges, and continuous beam bridges. Among them, the simply supported slab beam bridges have the smallest spanning capacity, and generally have a span of 8-20m. The maximum span of continuous girder bridges in China is below 200m, and it has reached 240m abroad (currently the longest span girder bridge in the world has a maximum span of 330m, which is the double-track bridge of Shibanpo Yangtze River Bridge in Chongqing, China)
Arch bridge: Under the vertical load, the vertical reaction force and horizontal thrust are generated at the supports at both ends. It is the horizontal thrust that greatly reduces the mid-span bending moment and increases the spanning capacity. The theoretical calculation is that the limit span of the concrete arch is 500m Right and left, the steel arch can reach 1200m. It is this thrust that requires good geological conditions when constructing the arch bridge.
Steel bridges: There are T-shaped steel bridges and continuous steel bridges. The main disadvantage of T-shaped steel bridges is that there are many expansion joints on the deck, which is not conducive to high-speed traffic. The continuous steel structure's main beams are continuous and seamless, and the traffic is smooth. No system conversion. The largest span in China has reached 270m (Humen Bridge Auxiliary Channel Bridge)
Cable-bearing bridges (cable-stayed bridges and suspension bridges) are the best design for the construction of bridges with very large spans. The road or railway deck is suspended in midair by steel cables, and the cables are suspended between the towers. The cable-stayed bridge has a built main span of 890m and a suspension bridge of 1991m.
Zongtuo's high-quality bridge equipment and mining machinery products such as bridge stretching
equipment, downhole drill series, steel processing machinery, rock splitting equipment, grouting
equipment, and pavement processing equipment have been well received by users. In recent years, we have begun to focus on the development of international markets.