Deviation Correction Technology for High Pressure Jet Grouting Pile Bridge Pier of Operating High-speed Railway
Taking Shalang Grand Bridge of Guangzhou-Zhuhai intercity Railway as the research object,based on the principle of elastic foundation beam,the bridge pier and abutment are corrected by the injection pressure of high-pressure jet grouting pile,and the linkage model of pier deviation correction is established.The deviation correction technology is proposed and successfully applied.The results show that the deformation and displacement of pier structure caused by skylight point construction are much smaller than the influence of train operation and temperature on track deformation during daytime.After correcting the deviation of the bridge and track structure by high pressure jet grouting pile,the pier in the section with offset greater than 5 mm should be ic monitoring;stability corrected in principle,and the pier in the section with offset less than 5 mm should be corrected according to the offset values of the front and back piers.
bridge foundationhigh-pressure jet groutingpile foundation inspectionlinkage correctiondisplacement monitoringsecuritydynamic monitoringstability
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维普
