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Volume 6 – Geotechnical Manual, Site Investigation and Engineering ...

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Chapter 9 FOUNDATION ENGINEERING<br />

Deflection Coefficient, F δ for Applied Lateral Load, H<br />

Moment Coefficient, F M for Applied Lateral Force, H<br />

Notes:<br />

5<br />

1. T = E pI p<br />

where E<br />

n p I p = bending stiffness of pile <strong>and</strong> n h = constant of horizontal<br />

h<br />

subgrade reaction<br />

2. Obtain coefficients F δ ,F M <strong>and</strong> F v at appropriate depths desired <strong>and</strong> compute<br />

deflection, moment <strong>and</strong> shear respectively using the given formulae.<br />

3. Maximum shear occurs at top of pile <strong>and</strong> is equal to the applied load H.<br />

Figure 9.12 Influence Coefficients for Piles with Applied Lateral Load (Fixed against Rotation at<br />

Ground Surface) (Matlock & Reese, 1910)<br />

9-38 March 2009

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