Jouko Lehtonen

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Jouko Lehtonen LOAD TRANSFER SYSTEM ANALYSIS IN
UNDERPINNING
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INTRODUCTION

• The first analysis on load transfer system in
  underpinning was introduced by Dr Ismo Tawast,
  TUT 1993
• The analysis has been updated and enlarged in the
  DATU project at Turku Polytechnic
• The load transfer system has many impacts to
  superstructures and implementation of
  underpinning
• Settlements
• Costs
• Duration of the underpinning project

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• TOTALLY 9 DIFFERENT BASIC TYPES HAVE BEEN
  IDENTIFIED IN 2 CATEGORIES
• SETTLING SUPERSTRUCTURE
• NON-SETTLING SUPERSTRUCTURE

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SETTLING SUPERSTRUCTURE
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Load transfer system No. 1
Column
Wall
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Load transfer system No. 2
Wall
Column
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Load transfer system No. 8
Column
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NON-SETTLING SUPERSTRUCTURE
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Load transfer system No. 3
Wall
Column
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Load transfer system No. 4
Wall
Column
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Load transfer system No. 5
Wall
Column
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Load transfer system No. 6
Wall
Column
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Load transfer system No. 7
Wall
Column
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Load transfer systems No. 9A and 9B
Column
Column
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• THANK YOU FOR YOUR ATTENTION!