Hello, everyone.
This is Enta.
Do you know the actual location of ground anchor work?
Huh?
What are you talking about?
That's what people would think, right? lol
As a construction supervisor, you measure the anchor installation positions based on layout tolerances, right?
The positioning error is, after all, merely the position of the final head.
That means the drilling location is correct.
I'm using the anchor scale because other methods are hard to understand, lol.
What I'm trying to say is that we drilled the hole, inserted the anchor, and positioned the anchor head in the designated location.
However, the actual anchor should be a little lower.
The picture above is a common one.
In this drawing, the anchor is positioned right in the center after drilling.
However, the actual installation location is different.
It's just hanging down there.
People often assume, “You guys usually set it up right in the middle, don’t you?” but we haven’t actually set it up in the middle.
Technically, there's a spacer, but it doesn't serve any purpose.
However, when it comes to whether the anchor is attached directly to the rock mass,
Since it's covered in cement slurry, corrosion protection doesn't seem to be an issue. (Even though I can't see it.)
Since the construction method involves either cement slurry immersion or casing replacement grouting, it is thoroughly coated with cement slurry.
(Maybe I'll write about this injection method next time.)
What I'm trying to say here is that there has been friction from the very beginning.
Since it is set with cement slurry, the surrounding area will not shift when tension is applied.
As a result, friction occurs inside the polyethylene pipe.
There's grease around it, so I don't think there will be any problems with how it moves, but,
This is why there is some variation in test results.
The illustration is a bit exaggerated, but I think the refraction is actually a little more gradual.
It is by no means buckling.
So, how can we eliminate this variability that occurs during times of stress?
I'll save that for next time lol
See you later.
