Help dealing w/ aggressive 4 year old

Hello,I have a 4 year old daughter who is very aggressive and destructive when angry and I can't figure out how to make it stop. Anything can set her off. Yesterday morning, it was because I parked the car on a driveway chalk drawing she did a day before. Usually, it's when she doesn't get her way or if she's very tired.Here is my dilemma. When she gets angry she lashes out on the environment. She will try to flip furniture, pull curtains off the walls, knock over end tables, slam doors. Very recently, she ran off down the street. Obviously, I can't let her do that so I have to physically stop her. As soon as I, or my wife, touch her, she will start hitting, scratching, kicking, and biting us. She drew blood yesterday on my wife's arms. As I type I this, I have scabs on the tops of both of my hands. If I try to restrain her, she'll scream that we're choking her and try to spit on us. She'll fight to free herself until she passes out. So, you can see my problem. I can't let her destroy the house, but I also can't physically stop her without being attacked myself.We have tried everything: spanking (which only makes her angrier), timeouts (she will not stay in the timeout spot and will fight you to get out), taking things away, talking to her after when she finally gets calm. When she is in the red zone, it's like she can't even hear us talking. There is nothing that can stop her.Lately, my only method is to take her upstairs to a spare bedroom and sit against the door so she can't leave (while inside room with her). She will repetitively scream "go away" or "stupid head" over and over for at least an hour while trying to get out of the room. It only stops when she completely fatigues herself. I don't even know how she still has a voice when it is done. By the end we are scraped up, tired and wondering why we decided bring a second child into this.I need a new strategy but don't have any better ideas. I can't let her destroy things and I can't let her hit me. But if I stop one, I get the other. via /r/Parenting https://ift.tt/2Uumf4P