Page 29 - ASF Katalog 2018 en

4 ANCHOR/WALING JOINTS

When settlement is expected, the anchor connection should be For anchors at steep angles or where excessive settlement or rotational
hinged and allow movement in the vertical direction in order to movements are expected, the recommendation is to position the
avoid the associated bending stresses at the threaded joints. anchor connection in the trough of the sheet pile wall but below the
To allow movement, a rocker plate, end plate with spherical waling. Again, various details are possible here depending on the
recess or threaded rocker plate is normally used. particular requirements.

A rocker plate has a semicircular roller that allows the anchor to rotate, The connection to combined sheet piling with tubular piles is generally
and when subjected to moments, stresses close to the yield stress achieved via T-connections that pass through the wall of the pile. These
occur, which permit angular rotation without any particular resistance. are introduced into the tubular pile from above.
Rotation with a threaded rocker plate is possible thanks to the
semicircular roller welded to the plate. At the anchor wall, the anchor is connected via the waling, which is
fitted to the outside here (compression waling). A simple connection
If horizontal movements are expected as well, two opposed hinges can with end plate only is common.
be arranged one behind the other, or a universal rocker plate or end
plate with spherical recess can be used. A hinge effect can also be A hinged connection is necessary, for example, when the anchor is laid
achieved by using an anchor with a rounded T-head. Where the depth in filled ground over its entire length and settlement is likely.
of the wall is limited, a threaded rocker plate can be used to save the
depth of the nut.

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