ANALYTICAL STUDY ON THERMAL STRESS OF AUTOCLAVED AERATED CONCRETE SHEAR WALLS

In this numerical study, finite element method (FEM) is employed to demonstrate temperature and stress simulations of autoclaved aerated concrete (AAC) shear walls in different seasons by using ANSYS software. Structural behavior simulation is conducted by a good combination of comprehensive material properties and reasonable models. Calculation results show that, compared with the ordinary mortar (OM), the insulation mortar (IM) can effectively reduce f temperature variation in AAC matrix layer by 1.668. in summer and 5.315 degrees C in winter, which indicates a better performance on heat insulation. In terms of thermal stress, IM layer would withstand a greater stress in all cases, but it could lower the maximum stress in AAC layer and interface stress by almost 50% in winter compared with wall structures with OM. As for temperature deformation, a 17% reduction in winter and a 30% reduction in summer are observed in AAC matrix layer coated with IM.