Weak-scale supersymmetry is one of the best motivated and studied extensions of the Standard Model. The recent increase in the centre-of-mass energy of proton-proton collisions at the Large Hadron Collider gives a unique opportunity to extend the sensitivity to production of supersymmetric particles. We present several ATLAS results on searches for supersymmetric squarks and gluinos, including third generation squarks produced directly or via the decay of gluinos. The searches involve final states containing jets (possibly identified as coming from b-quarks), missing transverse momentum and no leptons. They are performed on 3:2fb-1 proton-proton data collected in 2015 at √s = 13TeV. The limits obtained in these searches extend the ones obtained during Run-1 of the LHC significantly.