Transmission And Substation Foundations - Technical Design Manual

SECTION 4: DESIGN METHODOLOGY Lateral Capacity of Helical Piles

Battered Piles

GRADE BEAM & PILE CAP

Grade Beam & Pile Cap

BATTERED PILES

Enlarged Shaft Section

ENLARGED SHAFT SECTION

PASSIVE EARTH PRESSURE RESISTANCE Passive Earth Pressure Resistance

BENDING MOMENT DISTRIBUTION IN PILE Bending Moment Distribution In Pile

PILE CAP Pile Cap

OPTIONAL LATERAL TIEBACK Optional Lateral Tieback

FIGURE 5-17 LATERAL RESISTANCE METHODS

Lateral Resistance Methods Figure 4-16

Lateral Deflection (in) Medical Office Bldg. - Portland, CT - RS6625 Lateral Deflection (in) Medical Office Bldg. - Portland, CT - RS6625

Bending Moment (in-kips) Medical Office Bldg. - Portland, CT - RS6625 Bending Moment (in-kips) Medical Office Bldg. - Portland, CT - RS6625

-0.1 -0.1

-0.05 -0.05 0 0.05 0 0.05

0.1 0.1 0.15 0.25 0.35 0.45 0.2 0.3 0.4 0.5 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

-400 -400-350 -300 -250-200 -150 -100 -50 50 100 150 200 0 -350 -300 -250 -200 -150 -100 -50 0 50 100 150 200

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

0

0

1

1

2

2

3

3

4

4

5

5

6

6

Depth (ft)

Depth (ft)

7

7

Depth (ft)

Depth (ft)

8

8

9

9

10

10

11

11

12

12

13

13

Case 1 Case 1 Case 2 Case 3 Case 2 Case 3

Case 1 Case 1 Case 2 Case 3 Case 2 Case 3

14

14

LPILE Plus Sample Plot: Deflection vs. Depth Figure 4-17

LPILE Plus Sample Plot: Bending Moment vs. Depth Figure 4-18

www.hubbell.com/hubbellpowersystems | 4-29