Fig 1.
Basic Structure of a Typical Micro-Pile Foundation.
Table 1.
Value Table for Risk Factor L.
Table 2.
Value Table for Risk Factor E.
Table 3.
Value Table for Risk Factor C.
Table 4.
Relationship between Risk Value D and Risk Level.
Fig 2.
Correspondence between normalized risk value and risk level.
Fig 3.
Basic Structure of Enlarged Diameter Pile Foundation.
Fig 4.
Basic Structure of Inclined Pile Foundation.
Fig 5.
Soil and experimental micro pile model.
Fig 6.
Displacement simulation results of vertical pile under ultimate uplift load.
Fig 7.
Strain gauge layout diagram.
Fig 8.
Pile integrity testing.
Fig 9.
Experimental loading scheme.
Fig 10.
Photograph of the field experiment.
Fig 11.
Comparison of experimental and simulated displacements under different load levels.
Fig 12.
Mechanical Simulation Model of Pile-Soil System for Micro-Pile Foundation.
Fig 13.
Displacement Results of Straight Pile Foundation under Ultimate Loads.
(a) Displacement under Ultimate Compressive Load. (b) Displacement under Ultimate Uplift Load. (c) Displacement under Ultimate Horizontal Load.
Fig 14.
Displacement Results of Enlarged Diameter Pile Foundation under Ultimate Loads.
(a) Displacement under. Ultimate Compressive Load. (b) Displacement under Ultimate Uplift Load. (c) Displacement under Ultimate Horizontal Load.
Fig 15.
Relationship Curve between Maximum Displacement and Risk Level for Micro Under-reamed Pile.
Fig 16.
Ultimate Uplift Load Curve for Micro Under-reamed Pile at Different Enlargement Factors.
Table 5.
Physical and mechanical parameters of soil layers at the test site.
Fig 17.
Maximum Displacement of Micro Under-reamed Pile at Different Enlargement Factors.
Fig 18.
Displacement Simulation Results of Inclined Pile Foundation under Ultimate Loads.
(a) Displacement under Ultimate Compressive Load. (b) Displacement under Ultimate Uplift Load. (c) Displacement under Ultimate Horizontal Load.
Fig 19.
Maximum Displacement and Risk Level Relationship Curve of Micro-Inclined Pile Foundation.
Fig 20.
Limit Horizontal Load Curve of Micro-Inclined Pile Foundation at Different Inclination Angles.
Table 6.
Risk Values and Risk Levels of Micro Under-reamed Pile at Different Enlargement Factors.
Table 7.
Risk Values and Risk Levels of Micro-Inclined Pile Foundations at Different Inclination Angles.
Fig 21.
Maximum Displacement of Micro-Inclined Pile Foundation at Different Inclination Angles.