Minimum surcharge load of URM walls under flexure and axial force / Mindestauflast bei Biegung mit Normalkraft - Exact solution and considerations on the basis of the arch model / Genaue Lösung und Betrachtungen anhand des Bogenmodells

This paper suggests a detailed parametric study, which has been drawn up in connection with the question of the necessity of verification of masonry wall by a minimum vertical load subject to bending and normal force by the author and his team [7]. It assumes the actual eccentricities from supporting due floors and takes into account the second order theory in middle of wall according to DIN EN 1996-1-1 or the German NA. In some cases, the model is derived for very high wind loads to its limits. Using the arch model which is introduced in DIN EN 1996-1-1 and may be applied by NA, is helpful and effective. This method may provide higher capacity rather than for example, with the bar or plate model.
In this article the verification by means of the arch model will be presented and discussed. It is also shown that, forming an arch opposing to the horizontal wind load and low vertical loads may not come to a stability failure.