
In late September 2022, KET successfully completed the commissioning and delivery of the synchronous bridge lifting system for the reconstruction project of the old bridge on Harbin East Third Ring Expressway. This project involved the overall synchronous lifting of the bridge, reaching a maximum elevation height of 6.897 meters—the highest recorded bridge lifting height in the Harbin area.
During the lifting process, the project team faced several technical challenges, including controlling both lateral and longitudinal displacements, managing the complexity of nearly 7-meter-high jacking operations, adapting to changes in span and beam forces, and lifting the massive weight of the superstructure, including piers, caps, and the bridge deck. Leveraging its expertise and extensive industry experience, KET provided the most suitable intelligent synchronous lifting system to the jobsite, ensuring safe and efficient operations throughout the project.

The entire bridge adopts a simply supported to continuous prestressed concrete small box girder structure, with the deck divided into two sections, each 23 meters wide.
West section spans: 4×30m (simply supported to continuous small box girders) + 3×40m (small box girders, railway section) + 3×30m + 3×30m (simply supported to continuous small box girders)
East section spans: 4×30m + 4×30m (railway section) + 3×30m + 3×30m (all small box girders)

The bridge starts 400 meters north of Xianfeng Road, crosses Xianghua Street and a dedicated railway line, and ends at stake K40+812.5. The total length is 420 meters, including a 120-meter railway crossing from K40+512.5 to K40+632.5. The bridge is designed for City-A load class and complies with seismic intensity 7, completed in 2012.
Utilizing advanced computer control technology, KET has been dedicated to offering lifting, pushing, and jacking solutions, widely applied in multi-point synchronous lifting, jacking, sliding, hoisting, tensioning, asymmetric weighing of large components, spatial attitude adjustment, and intelligent transportation of heavy structures. The company delivers safe, efficient bridge synchronous lifting equipment and services for complex engineering demands.
Working Drawings for This Project :







Synchronous Bridge Lifting Equipment Specifications:

PLC Multi-Point Synchronous Lifting Hydraulic System
Model: KET-DBTB-48
System Pressure: 70 MPa
Rated Voltage: 380V 50Hz
Synchronous Accuracy: ±0.2 mm
System Power: 9 kW
Motor Power: 2.2 kW × 4
System Flow: 1.8 L/min × 4
Oil Tank Volume: 400 L
Double-Acting Outer Ring Mechanical Self-Locking Jack
Model: KET-CLLRS-300T-140
Working Pressure: 70 MPa
Load Capacity: 300 T
Body Height: 320 mm
Stroke: 140 mm