3D Adjustment and Intelligent Synchronous Lifting System for Beijing-Shenyang Railway Liuhe Bridge

Project Name: 3D Adjustment System and Intelligent Synchronous Lifting System applied in Beijing-Shenyang Railway Liuhe Bridge

Location: Shenyang City, Liaoning Province

Project profile:
Liuhe extra-large bridge on Beijing-Shenyang railway (bid section TJ-11), with 44.5m long simple support arch spanning across national expressway G304 in Xinmin city, is one of the key and difficult projects in this bid section. During construction process, in order to ensure the normal traffic on G304, the simple support arch was cast in place at a higher position. After the completion of beam structure and arch rib, the whole simple support arch and beam were gradually lowered to required place.

Challenge: 
According to construction plan, the whole simple support arch and beam structure which weighs 2873t needs to be lowered around 4m and then accurately positioned. Plus the extreme cold environment( minus 20 degrees), the construction team has to take all these key factors into consideration.

Solution:
During the beam-lowering process, synchronicity needs to be ensured, or it may bring great potential safety hazard. In order to realize synchronous movement control, KATTOR SLS (Synchronous Lifting System) was successfully applied in this project. Additionally, in an effort to make sure the whole beam structure was lowered on permanent bearings with no deviation, the construction team adopted KATTOR 3DAS (Three Dimension Adjustment System) to measure and correct the position of the beam when deviations happened.  

Applied products:
KATTOR Intelligent Synchronous Lifting System(SLS), 3D Adjustment System (3DAS)