REPAIR OF MASONRY AFTER DYNAMIC IMPACTS. CALCULATION AND DESIGN METHODS
Main Article Content
Abstract
Civil engineers are encouraged to apply novel techniques, to improve and to adapt well-known methods amid the reality of modern life. An impressive number of restoration and strengthening techniques are developed for unreinforced masonry (URM) material well-known for centuries. Masonry may need restoration and strengthening due to errors made in the course of design, construction or long-term operation of buildings and structures. Besides, masonry needs strengthening in seismic areas. Strengthening of masonry structures, subjected to dynamic impacts during military operations, was initiated after the Second World War. Construction technologies advanced considerably over the last seventy years, and today shotcrete, a widely known strengthening technique, can be applied for a good reason. This article addresses shotcrete as a method for restoring masonry damaged by explosion impacts. Results of the laboratory testing of materials and parts of structures are provided together with improved methods of analysis. The methodology for computer-aided analysis of buildings is also presented, taking into account the staged nature of work and the ability of external shotcrete to support loads. Practical restoration of buildings is addressed in the conclusions section, and conclusions are drawn there.
Downloads
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
Page, A.W. The biaxial compressive strength of brick masonry, Proc. Inst. Civ. Eng. 1981, 71, pp. 893–906. DOI: https://doi.org/10.1680/iicep.1981.1825
Lourenço, P.B. Computational strategies for masonry structures, Doctoral Thesis. Delft University, 1996.
López, J.; Oller, S.; Oñate, E. Cálculo del Comportamiento de la Mampostería Mediante Elementos Finitos. Barcelona, 1998.
Geniev, G.A. About the criterion of strength of masonry under flat stressed state. Structural Mechanics and Analysis of Structures 1979, 2, pp. 7-11.
Tyupin, G.A. Deformation theory of plasticity of masonry. Structural Mechanics and Analysis of Structures 1980, 6, pp. 28-30.
Kabantsev, O.V. Modeling nonlinear deformation and destruction of masonry under biaxial stresses. Part 1. Applied Mechanics and Materials 2015, 725-726, pp. 681-696. DOI: https://doi.org/10.4028/www.scientific.net/AMM.725-726.681
Kabantsev, O.V. Modeling nonlinear deformation and destruction of masonry under biaxial stresses. Part 2. Applied Mechanics and Materials 2015, 725-726, pp. 808-819. DOI: https://doi.org/10.4028/www.scientific.net/AMM.725-726.808
Kabantsev, O.V. Research fundamentals of the structur-al theory of masonry for the assessment of limit states of masonry structures in earthquake resistant buildings, Post-Doctoral Thesis. Moscow State University of Civil Engineering, Moscow, 2016.
Vildeman, V.E.; Sokolkin, Y.V.; Tashkinov, A.A. Me-chanics of inelastic deformation and fracture of composite mate-rials, Nauka: Мoscow, Russia, 1997, 228 p.
Kashevarova, G.G.; Zobacheva, A.Yu.; Dubinsky, S.I. Modeling of the process of destruction of a brick masonry of buildings in full-scale and numerical experiments. Structural Mechanics and Analysis of Structures 2011, 1, pp. 69-73.
Kabantsev, O.V. Discrete model of masonry under the biaxial stressed state. Proceedings of TSASU 2015, 4, pp. 113-134.
Kabantsev, O.V.; Tamrazyan, A.G. Modeling of elastic-plastic deformation of a masonry under the biaxial stressed state. International Journal for Computational Civil and Structural Engineering 2015, 11, pp. 87-100.
Polyakov, S.V.; Safargaliev, S.M. Seismic stability of buildings with bearing brick walls, Alma-Ata: 1988, 188 p.
Polyakov, S.V. Studies on earthquake resistance of large-panel and stone buildings, Мoscow: 1962, 289 p.
Polyakov, S.V.; Konovodchenko, V.I. Strength and deformations of vibrating brick panels at skew. Seismic stability of prefabricated large element buildings, Мoscow: 1963, pp. 131-148.
Likhnenko, E.V.; Zhadanov, V.I.; Arkaev, M.A.; Adigamova, Z.S. Modern methods of reinforcement of masonry structures with the use of composite materials when performing the capital repair of civil buildings. Expert: theory and practice 2021, 6 (15), pp. 37-44. DOI: https://doi.org/10.51608/26867818_2021_6_37
Orlovic, R.; Mantegazza, D.; Naichuk, A.; Derkach, V. Modern methods of repair and strengthening of stone structures. Architecture, design and construction 2010, 1 (44), pp. 86-87
Shvedova, V.I.; Tumolskiy, A.P.; Molchanova, A.V. Application of Stakhanov's methods to rehabilitation works. General construction works, Moscow, Leningrad: 1945, 88 p.
Basov, M.A. Restoration of buildings destroyed by bom-bardment, Moscow, Leningrad: People's Commissariat of the RSFSR, 1943, 88 p.
Kabantsev, O.V.; Tonkikh, G.P.; Koshayev, V.V. Experimental investigations of the bearing capacity of the masonry with cracks during cement mortar injection using the discharge-pulse technology. Vestnik MGSU 2011, 1, pp. 127-135
Tonkikh, G.P.; Kabantsev, O.V.; Granovsky, A.V.; Simakov, O.A. Experimental studies of seismic reinforce-ment of masonry with the system of external reinforce-ment on the basis of carbon fiber. Vestnik of TGSU 2014, 6, pp. 57-69.
Tonkikh, G.P.; Kabantsev, O.V.; Koshayev, V.V. Meth-odology of experimental studies on reinforcement of masonry buildings with reinforced concrete applications. Earthquake-resistant construction. Safety of constructions 2005, 6.
Tonkikh, G.P.; Kabantsev, O.V.; Koshayev, V.V. Experimental studies of bearing capacity of masonry under main loads. Earthquake-resistant construction. Safety of constructions 2007, 6.
Tonkikh, G.P.; Kabantsev, O.V.; Simakov, O.A.; Simakov, A.B., Baev, S.M.; Panfilov, P.S. Experimental study of seismic strengthening of masonry exterior con-crete applications. Earthquake-resistant construction. Safety of constructions 2011, 2.
Tonkikh, G.H.; Simakov, O.A.; Kabantsev, O.V.; Bayev, S.M. Experimental studies of masonry aseismic reinforcement using external concrete applications. Earthquake-resistant construction. Safety of constructions 2011, 2.
Kabantsev, O.V.; Simakov, O.A.; Neshchadimov, V.A.; Shtyrlov, D.A. Strengthening bearing masonry walls of damaged multi-storey buildings. Industrial and Civil Engi-neering 2023, 7, 29-35.