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Design Guidelines for Increasing the Lateral Resistance of Highway-Bridge Pile Foundations by Improving Weak Soils (2011) / Chapter Skim
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Chapter 1 - Introduction
Pages 3-4

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From page 3...
... Furthermore, an expanded pile cap or connecting beam often is required to structurally connect the new piles to the existing pile group. Although these structural approaches provide the required lateral resistance, they may also be relatively expensive and time consuming An alternative approach is to use soil improvement techniques to increase the strength and stiffness of the surrounding soil and thereby increase the lateral resistance of the pile group.
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From page 4...
... Improved Soil 4-5D 3-4D (a) Existing Foundation (b)
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Key Terms

  • pile diameters
  • soil improvement
  • pile foundations
  • pile cap
  • existing foundation

  • passive resistance
  • entire block
  • interior piles
  • bridge foundations
  • required lateral

  • existing pile
  • eral pile
  • perimeter pile
  • increased lateral
  • pile foundation

  • inadequate lateral
  • lateral pile
  • pile stiffness
  • demands induced
  • drilled shafts

  • potentially produce
  • thereby increase
  • level moments
  • improvement techniques
  • approaches provide

  • structural approaches
  • column plastic
  • axial loads
  • service level
  • moment demands


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