How to sing powerfully?

I am having trouble singing with endurance. And I feel like I'm still singing from my throat because it becomes sore after a few songs. I know that I am supposed to push air from the diaphragm, but my throat still hurts. On top of that, I like to sing more rock-like songs (like Three Days Grace, Papa Roach, Flyleaf, etc) and I am a girl. Basically, does any have any advice on how to not destroy my vocal chords?