Bridge jacking & repair of bearing plinths

Our team undertook the project to repair the bearing plinths of a highway overpass. Poor construction techniques such as insufficient compaction of concrete, concentration of debris and construction materials, poor mould fabrication and misalignment of elastomer bearings were evident on a highway overpass constructed about 20 years ago. The above issues raised concerns regarding the efficiency of load transfer mechanisms from superstructure to the abutments. The aim of the intervention was to restore the bearing plinths without replacing the existing bearings. Five hydraulic jacks were utilized, providing up to 1250 kN of lifting force per abutment. During the execution of bearing plinths restoration, the existing elastomer bearings were used as temporary supports providing additional stability and safety for the superstructure.

0 A2 A1 2before1 2after1 IMG_20191115_155059 IMG_20191115_143024 IMG_20191115_142904

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