The other day, while talking about using bicycle sharing, I was looking up bicycle stations along the Tozai Line (“Tozai” means “East-West”), and I suddenly thought, “Is there some kind of problem with the Minami-sunamachi station on the Tozai Line?(“Minami-sunamachi” means “Southen sand town”) Like a misalignment in the route map?” After all, it’s underground.
However, when I calmed down and thought about it, considering the accuracy of Google Maps these days, there’s no way that such a distorted area would be unnatural. I searched for “Minami-sunamachi S-curve” and found an article that explains it.
Minamisunamachi is now located on land, but at the time of construction, it was at the bottom of the Suzaki River(“Suzaki” nealy… “Sandbar cape”). In other words, it is a station that was built at the riverbed using the caisson method.
And the subway that used to run underground beneath the road that ran parallel to the river all the way to Minami-sunamachi was moved to the neighboring river, resulting in this forced S-curve.
I was also surprised to learn that Minamisunamachi Station was originally the riverbed… And other stations like Takebashi Station were also made in the river (To be more specific, it is moat of Imperial palace ) using caisson construction, so even stations that you just pass through every day are made with incredible technology.
But I was also surprised that there are people who notice and investigate even the distortions in Takebashi Station and similar places.
It ended up being just a story of finding/introducing someone who has done amazing analysis in response to a simple question that I suddenly had, but I wanted to convey this excitement. So I’ll go ahead and post it.
