Study on Deformation Monitoring of Foundation Pit Supporting Structure of Soft Soil Foundation Bridge
In order to analyze the deformation characteristics of foundation pit support structure of soft soil foundation bridge,this paper takes a single span steel box girder suspension bridge as an example to monitor the evolution of horizontal displacement,settlement and supporting axial force of the foundation pit support structure of bridge.The results show that the maximum horizontal displacement of foundation pit is 22.6mm.The accumulated settling amount is 5.4 mm;With the continuous advancement of foundation pit construction,the supporting axial force of foundation pit engineering at all monitoring points is stable first and then increasing.The maximum support stress of all monitoring points is 126,108,125,109 and 83 MPa respectively,and all monitoring data are less than the design requirements 150 MPa,indicating that the sup-port structure scheme has effective safety and reliability.
Soft soil foundationBridge foundationHorizontal displacementAxial force
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