very unusual visitation rights!

I am 15 years old. My parents threw me out of the house. They sent me to live with my uncle. I didn't do anything to really deserve it-we couldn't agree on a few things,but that is not the problem. They will not allow me to see my brothers and sister. I was more of a parent to my siblings than they ever were. (My parents aren't exactly Ozzie and Harriett.) Is there a way that I can petition the court for visitation rights? I know it sounds odd-but I desperately want to see my siblings. Hope someone can help me out. thanks. Garen