Deformation of large stones masonry

Introduction. The paper investigates the stress-strain state of masonry walls made of large ceramic stones with dry vertical tongue and groove joints.

Aim: to study the distribution of vertical stresses in masonry of large ceramic stones with vertical tongue and groove joints not filled with mortar.

Materials and methods. The study was performed on the model of the wall section. Numerical study of the stress state of the wall masonry at a concentrated load was carried out for masonry with chain bond. The wall fragment was modeled by solid finite elements.

Results. It was found that under a concentrated load, the deformable zone has the form of a triangle with a vertex under load and expanding as it moves away from the load point. Based on the studies conducted, the authors of the paper have proposed an approximate method for determining compression stresses in masonry stones with chain bond. When the load is concentrated, the zone of distribution of compressive stresses in the masonry has the form of a triangle. The study established the characteristics of the distribution of compressive stresses in chain masonry of walls made of large stones with dry vertical joints at a concentrated load.

Conclusions. The study shows that the existing methods of calculating solid masonry are not suitable for calculating masonry with dry vertical tongue and groove joints because the latter comprise a discrete-continual system. 

1. State Standard 530-2012. Ceramic bricks and stones. General specifications. Moscow: Publishing House of Standards; 2012. (In Russian).

2. Baranova T.I., Laskov N.N., Artyushin D.V. Resistance of masonry walls under the combined action of vertical and horizontal forces. Moscow: BST Publ.; 1998. (In Russian).

3. Baranova T.I., Tumanov A.V. Method of calculating brick and reinforced brick walls on based on core models. Promyshlennoe i grazhdanskoe stroitel'stvo = Industrial And Civil Engineering. 2001;(8):29–31. (In Russian).

4. Brusentsov G.I., Budreika V.E. Experimental and theoretical studies of fragments of masonry in a flat stressed state. In: Research and methods of calculation of building structures. Collection of works. Moscow: TSNIISK named after V.A. Koucherenko; 1985, pp. 74–86. (In Russian).

5. Geniev G.A., Voronov A.N. On the strength criteria of an orthotropic material of the type of masonry in a flat stressed state. Research and metho ds of calculation of building structures. Collection of works. Moscow: TSNIISK named after V.A. Koucherenko; 1985, pp. 23–29. (In Russian).

6. Geniev G.A., Kurbatov A.S., Samedov F.A. Questions of strength and plasticity of anisotropic materials. Moscow: Interbruk Publ.; 1993. (In Russian).

7. Donchenko O.M., Degtev I.A. Towards the development of the theory of crack resistance and resistance under compression. Izvestiya vysshikh uchebnykh zavedenii. Stroitel’stvo = News of higher educational institutions. Construction. 2000;(10):16–20. (In Russian).

8. Kameyko V.A., Lomova L.M. Studies of masonry from hollow ceramic blocks. In: Theoretical and experimental studies of stone structures. Collection of works of TSNIISK named after V.A. Koucherenko. Moscow: Stroyizdat Publ.; 1982, pp. 37–50. (In Russian).

9. Pangaev V.V. Destruction of compressed masonry. Izvestiya vysshikh uchebnykh zavedenii. Stroitel’stvo = News of higher educational institutions. Construction. 2000;(12):7–12. (In Russian).

10. Polyakov S.V., Chigrin S.I. production and application of industrial ceramic panels. Moscow: Stroyizdat Publ.; 1990. (In Russian).

11. Obozov V.I. Methods of constructing volumetric computer models of filling the outer walls of frame buildings with masonry from large blocks. Stroitel’naya mekhanika i raschet sooruzhenii = Structural Mechanics and Analysis of Constructions. 2018;(2):50–55. (In Russian).