FINITE ELEMENT ANALYSIS OF BRIDGE JACKING CONSTRUCTION
Liaoyang Road Bridge in Qingdao is a prestressed concrete continuous box girder bridge.In order to real-ize the connection with the new bridge,the 46#bridge of the bridge is required to lift 655～1 218 mm.ANSYS soft-ware is used to establish the finite element calculation model of 46#bridge,and we analyze the maximum lifting force required when jacking to the highest point and the stress and deformation of box girder bridge and distribution beam under synchronous jacking conditions and jack failure conditions,so as to ensure the safety of bridge during jacking.The results show that the bridge has a large safety reserve under the two types of working conditions,which can en-sure the safety and feasibility of the bridge during the jacking process.The research results may provide the refer-ence for other similar bridge jacking construction projects.
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