permanent tie-back for slurry wall/basin wall

[sbian]

This question is two folds:

1. Are you aware of such construction (permanet tie-back for slurry wall/basin wall) for a liquid containing basins? good or bad?

2. As this tie-back appears part of the permanent structure, how engineer monitor its corrosion and creep/relaxation over the years? manual datalog or a SCADA-alike automact live monitoring?

Many thanks

 

[Erdbau]

I don't see why you couldn't put a liquid in a slurry wall excavation, provided that it is properly lined. If the liquid bears directly against the wall, it will only help reduce pressures. If the liquid is in a secondary container, isolating it from the wall, then it's no different from any old slurry walled excavation.

As far as the installation of permanent load cells, I don't see any reason why you couldn't install some automated data retrieval system. Talk to an instrumentation company about this, and they'll probably give you some recommendations as to what you can and can't do.

Make sure you spec out that anchorheads have the capability of being restressed and that they will be accessible through whatever waterproofing is put in.

Have you explored circular retaining walls? You may be able to forgo tiebacks all together, depending on geometry and soil, etc.

 

[Erdbau]

I don't see why you couldn't put a liquid in a slurry wall excavation, provided that it is properly lined. If the liquid bears directly against the wall, it will only help reduce pressures. If the liquid is in a secondary container, isolating it from the wall, then it's no different from any old slurry walled excavation.

As far as the installation of permanent load cells, I don't see any reason why you couldn't install some automated data retrieval system. Talk to an instrumentation company about this, and they'll probably give you some recommendations as to what you can and can't do.

Make sure you spec out that anchorheads have the capability of being restressed and that they will be accessible through whatever waterproofing is put in.

 

[Erdbau]

Please don't post the same question to multiple forums.