G MS THESIS_final version_Maxim Prokudin.pdf - Digital Repository ...

152Table 40: Stiffness comparison at 5 mm displacement between groups of aggregatepiers and C(I)+C(K)Pier typeAggregate Pier UnitCellAggregate PierSingle PierAggregate PierGroup of 2Aggregate PierGroup of 4Aggregate PierGroup of 5Aggregate PierGroup of 6Length(mm)Legend:δ top - deflection at the top of the pier (kPa)σ – stiffness of the pier (kPa)n –stiffness ratioσ aggregate pier at δ top = 5mm (kPa)Pier type305 588 C(I) + C(K)σ I+K at δ top = 5mm (kPa)n. stiffnessratio968 1.6610 1,330 Unit Cell 1,241 0.9305 247 C(I) + C(K) 1,418 5.7610 704 Single Pier 1,841 2.6305 1,345 C(I) + C(K) 2,023 1.5610 2,521 Group of 2 2,209 0.9305 2,254 C(I) + C(K) 3,151 1.4610 3,105 Group of 4 N/A N/A305 3,233 C(I) + C(K) 3,647 1.1610 4,375 Group of 5 4,148 0.9305 4,100 C(I) + C(K) 3,820 0.9610 5,361 Group of 6 4,818 0.9Table 41: Stiffness comparison at 10 mm displacement between groups of aggregatepiers and C(I)+C(K)Pier typeAggregate Pier UnitCellAggregate PierSingle PierAggregate PierGroup of 2Aggregate PierGroup of 4Aggregate PierGroup of 5Aggregate PierGroup of 6Length(mm)Legend:δ top - deflection at the top of the pier (kPa)σ – stiffness of the pier (kPa)n –stiffness ratioConversions:1 m = 3.3 ft1 mm = 0.0394 in1 kPa = 0.145 psiσ aggregate pier at δ top = 10mm (kPa)Pier typeσ I+K at δ top = 10mm (kPa)n. stiffnessratio305 908 C(I) + C(K) 1,147 1.3610 1,533 Unit Cell 1,460 1.0305 406 C(I) + C(K) 1,806 4.4610 949 Single Pier 2,065 2.2305 2,146 C(I) + C(K) 2,400 1.1610 3,017 Group of 2 2,869 1.0305 3,406 C(I) + C(K) 3,609 1.1610 3,947 Group of 4 N/A N/A305 4,150 C(I) + C(K) 4,225 1.0610 4,825 Group of 5 4,630 1.0305 4,898 C(I) + C(K) 4,096 0.8610 7,068 Group of 6 5,672 0.8Conversions:1 m = 3.3 ft1 mm = 0.0394 in1 kPa = 0.145 psi