Build an elevated bridge, one equipment can do it! On January 18, it was learned from China Railway Science, technology and industry group, a central enterprise in Hubei that the world's first pile beam integrated bridge erecting machine "Gonggong" was successfully developed, which will realize the complete assembly construction of bridge construction.
"Gonggong" bridge erecting machine is a "big guy", with a length of 92 meters, a weight of 575 tons, an effective span of 48 meters, and a cantilever heavy-duty operation of 16 meters. It adopts a double truss main beam structure, with 5 legs, 3 crown blocks and 1 pile driving device. It can walk freely in areas such as beaches and shallow water areas, and complete drilling, hoisting of pier body and beam body alone.
Xie Jiwei, chief engineer of the Design Institute of China Railway Science and technology group, introduced that according to the traditional way, road and bridge construction has four processes: drilling, pile foundation, pier assembly and beam erection, which need to be completed by equipment relay in three aspects: drilling rig, hoisting equipment and bridge erection equipment. The "Gonggong" bridge erecting machine realizes "three in one", which can complete all construction operations in an integrated way without the assistance of other equipment.
It is reported that the bridge erecting machine can realize "air" operation in beaches, shallow water areas and urban prosperous areas without laying construction access roads or trestles separately, which can not only reduce land acquisition and demolition, but also protect the ecological environment of the construction area. In addition, the construction of single span bridge is shortened from the previous 10 days to 3 days, which will greatly improve the construction efficiency and save the construction cost.
The bridge erecting machine has applied for 8 national patents and will be used in the reconstruction and expansion project of Shenzhen Shantou West expressway. The project is the expressway reconstruction and expansion project with the largest investment scale and the longest mileage in Guangdong. After completion and opening to traffic, it will promote the economic development and industrial upgrading of Shenzhen Shantou Special Cooperation Zone and Guangdong Hong Kong Macao Dawan district.
