The Analysis of Long Spiral Drilling Hole’s Deformation with Finite Element

Xiu Shao Zhao; Lin Li Mo; Da Xin Geng

doi:10.4028/www.scientific.net/AMR.168-170.206

Paper Titles

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Mechanical Properties and Microstructures of Cement Mortar Modified with Styrene-Butadiene Polymer Emulsion
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Solving the Inverse Heat Conduction Problem with Multi-Variables
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Evaluation of Earth Pressures Against Rigid Retaining Structures with RTT Mode
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The Analysis of Long Spiral Drilling Hole’s Deformation with Finite Element
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Study on Light–Colored Technology of Highway Tunnel Pavement
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Permanent Deformation Prediction Model of Graded Gravel under Repeated Load
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Effect of Semi-Rigid Connection and Pole in Different Flat on the Overall Steady-State Load-Bearing Capacity of the Steel Tubular Scaffold with Couplers
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Size Dependent Micro-Stress-Field of Fibers in Eutectic Ceramic Rod
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The Analysis of Long Spiral Drilling Hole’s Deformation with Finite Element

Abstract:

The long spiral CFG pile construction often causes crack while in saturated slit. 3D finite element model is carried out, and the deformation of drilling hole is analyzed. The deformation’s factors are emphtically discussed such as drilling depth, dumped-soil load, soil strength, groundwater level etc. The results show that uneven settlement and horizontal displacement are relatively small while silt has high strength. The reduced soil strength is the main factor of drilling holes’ deformation, which causes serious hole shrinkage and the soil is brought to surface with spiral blade, and then causes “excessive dumping” and soil cracking.