Application of Lifting Construction Technology of Integral Pier of Dagengjia Overpass
This paper takes the project of Dagengjia overpass as an example to explore the application of the lifting technology of the monolithic pier.The monolithic pier used in this project adopts the factory prefabrication method.After the quality inspection of the prefabricated pier is passed,the rail car is moved to the transport car and fixed with jacks and hydraulic thrusters,and then transported to the construction site.The bridge crane is used to complete the lifting of the whole pier,and the steel pipe pile is inserted into the pouring hole of the pier with adaptive adjustment device to complete the fixing of the pier.The construction shows that the transportation and lifting technology of the monolithic pier used in this project improves the construction efficiency,and the lifting task is completed 8 days ahead of the construction plan.