Investigation of the stressstrain state of brick veneer of the exterior walls with flexible connectors under temperaturehumidity influences

Abstract

The temperature and deformations of the laying of the face layer of the outer walls of a large-scale model of the building, formed by external three-layer walls and a one-floor-height slab were investigated. The construction of the model was started in the summer and finished in the fall of 2015. The work reflects the results of observations for the period until January 2018.

It is shown that the VAT of the face layer is greatly influenced by slabs of overlapping. When the structure (masonry) is closed in the warm season, the greatest stretching stresses and bending moments that can cause cracks appear in the face layer during cold weather.

On the basis of the studies, the methods for estimating the VAT of the face layer, the forces in flexible bonds under temperature-humidity influences are refined.

Correlations between the temperature of the outside air and the temperature of the laying of the face layer were refined. It is shown that in three-layer walls when determining the VAT of the laying of the face layer with a thickness of 12 cm or less, it is necessary to take the maximum values of the daily variations in air temperature in absolute value.