On the picture that Kulverstukas posted, there is a righthand maingear. It is interesting that first pair of wheels are torn off. Quite a force. Normally first pair of wheels hit the ground first, as gear is angled and they are lowest. Could these missing wheels indicate, that gear was not retracted, when plane hit water? First pair of wheels hit water, probably a wave, which at that speed is as hard as a concrete wall.
But then again, hydrocylinder is extended and bent, which means that gear was retracted during impact.
Here is a short video about how Tu-154 gear works:
https://www.youtube.com/watch?v=HhupJGUZYLQ