深厚软岩填土不同能级强夯对比试验研究

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中图分类号：TU472 文献标识码：A DOI： 10.7535/hbgykj.2025yx05003

（1.WSGRIEnginering&Surveying Incorporation Limited，Wuhan，Hubei430080，China；2.SchoolofCivil Engineering， Nanhua University，Hengyang，Hunan 4210o1，China ；3.Schoolof Civiland Architectural Engineering，Wuhan University， Wuhan，Hubei 430072，China）

Abstract：Inorder tofurther enhance theenginering qualityof deep soft rock fillafter dynamiccompaction treatment，four kindsofenergy level dynamiccompaction tests were caried out，including low，medium，high and super high.By systematically monitoring the settlement perblowand ground heave deformation，the relationshipbetweensettement per blow andthe numberofcompactionblows wasanalyzed，along with the deformationpaternsof ground heave aroundthecompaction pit.Through dynamic penetration tests，curves ilustrating the variation ofdynamic penetration resistance with depth before andafterdynamiccompaction were ploted.Based ontheseresults，thefirst reinforcement depthand thesecond reinforcement depthweredetermined.Theresultsshow thatthesetlementofdynamiccompaction showssignificantnonlinear characteristics as thenumber of hammer blows increases，which can be divided into three stages ：rapid development stage，stable development stage and stable stage.The soil near the rammer has significantsetlement under theactionof huge impact presure.The setlement amount decreases as the distance from the centerof the compacted pit increases.The soil on both sides of therammerissquezedbythelowerpart，and thereis alitleuplift.Theinfluencerangeof ground deformationaround the ramming pit is mainly concentrated in 3-12m . The dynamic compaction reinforcement depth is divided into the first reinforcement depth and the second reinforcement depth by using the growth rateof thenumberofdynamic probes beforeand afterdynamiccompaction.Itis found thatthe firstreinforcementdepth，thesecondreinforcementdepthandthetamping energyare basicall polynomial related.The research results cannotonly provide reference for the designand constructionof dynamiccompactionmethod，but alsohelp toefectivelycontrol theconstructionof dynamiccompactionin manyaspects such as construction period，costandquality，andfurther promotetheaplicationof dynamiccompaction technologyin engineering practice.

Keywords：roadbed engineering;softrock fill；dynamiccompaction；different energy level;comparative experimental;reinforcement depth

随着城市化进程的加速推进，山区用地矛盾日益突出。（剩余7972字）