Nope. There was a "Galt's Gulch" in Atlas Shrugged, but that was an invitation-only special case.
There wouldn't have been enough room there for everyone who "went Galt".
"Going Galt" doesn't mean quitting your job and becoming homeless (or a backwoods survivalist, or whatever) - although I suppose that's one way you could go about it, if you wanted to do it that way. It doesn't mean removing the product of your body's labor from society. It means removing the product of your mind's labor from society. IOW: "going Galt" is essentially just a "brain drain" tactic - it doesn't require anyone to become a self-isolating hermit.
It's been a while since the last time I read Atlas Shrugged, so I don't recall exactly how it was put, but in Galt's (in)famous speech, he didn't tell people to just quit their jobs - not unless they were reasonably able to do so (by retiring early, for example). He told them to stop putting any effort or ability into their work and to do the bare physical minimum needed to keep their jobs and adequately maintain themselves and those they cared about. He suggested that if their work required any particular intelligence, creativity or special talent that they get some other job that doesn't require any of those things (à la Hugh Akston working as a fry cook in a roadside diner instead of as a university philosophy professor, for example). The product of any efforts of their minds or talents should be kept secret and not shared with the world for its benefit (and at the expense of the creators) - not until the world was finally willing to fully acknowledge the value of the "men of the mind" (and recognize the brutish, vicious, and parasitical nature of the "men of the body").