SEISMIC BEHAVIOUR OF TIED-BACK WALLS. INITIAL ANALYSIS AND EXPERIMENTS

The seismic behaviour of tied-back walls is more complex than that of simpler earth-retaining structures such as gravity walls, in that the overall behaviour depends not only on the active force behind the wall but also on the responses of the toe restraint and the anchorage. Previous work on the seismic behaviour of retaining walls is reviewed, and in particular the Mononobe-Okabe analysis for passive failure is discussed in some detail. A test series is described which considers passive failure of a wall. Passive failure is induced by subjecting a small test wall to a roughly constant horizontal force. The wall is then shaken in a laboratory shaking trough using discrete pulses. Development of failure surfaces is observed, and forces, displacements and acceleration distributions are recorded for each pulse. It is concluded that use of the sliding-block model based on the Mononobe-Okabe passive equations is justified, but that in practice because of large toe forces involved and because the centre of active pressure moves up as the wall displaces at the base, a tied-back wall would be more likely to suffer an anchorage failure rather than to fail by rotation about the top.

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  • Corporate Authors:

    University of Canterbury

    Department of Civil Engineering, Private Bag 4800
    Christchurch,   New Zealand  8140
  • Authors:
    • Richards, R
    • Elms, D G
  • Publication Date: 1987-11

Language

  • English

Media Info

  • Pagination: 45 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00606115
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM