The T-shaped box girder synchronously completes a big degree turn in the with air-swivel bridge spherical hinge bearing
The T-shaped box girder of the ML Airport surrounding road network project completed a big degree turn in the air simultaneously, marking the achievement of "precise positioning" for the longest span and heaviest tonnage swivel girder.
The double span T-shaped box girder is the longest and heaviest rotating beam. It is a double span 2 * 60 meter T-shaped bridge with a single pier rotating weight of 12000 tons and 13000 tons, respectively. In order to ensure the precise "positioning" of two 10000 ton beam bodies, the project department installed a "swivel device" with a diameter of 1.5 meters and a weight of 1.3 tons - a swivel bridge spherical hinge bearing . This product is designed, manufactured, and constructed by our company throughout the entire process. The device is mainly divided into two parts: the upper and lower ball joints. The contact surface of the upper and lower ball joints is a smooth spherical structure, and the ball joints can rotate each other. The bridge pier can rotate around the center axis of the ball joint through a rotating platform that is fixed with the upper ball joint, which can achieve the rotation construction operation of a 8000 ton T-shaped bridge.
Bridge swivel method construction is a construction method of swivel positioning, which can overcome the constraints of terrain, traffic, environment and other conditions, save project costs, shorten construction period, and effectively ensure the safety and reliability of the construction process.
Our company has been researching bridge swivel devices since 2013, and our products have been applied to national key projects, They have received unanimous praise from owners and construction units. We will continue to focus on the research and development of new products and make our due contributions to the construction of bridges.