StatusThe thesis was presented on the 11 October, 2019
Approved by NCAA on the 6 December, 2019
Abstract– 2.53 Mb / in romanian
– 2.92 Mb / in russian
10.47 Mb /
Thesis structure: introduction, four chapters, conclusions and recommendations, a list of literature from 148 titles, set out on 149 pages of printed text, contains 87 figures, 3 tables. The main research results are published in 9 scientific works, 7 inventions, 1 application for an invention.
Field of study: - seismic resistance of buildings with stone walls.
The purpose of the work: - development of an effective, technologically advanced design and calculation methodology, antiseismic precast and monolithic zones of buildings.
Object: - AC belts of buildings with stone walls and methods of their calculation.
Subject: - manufacturability and compatibility of the work of the precast element with cast concrete belts in the ultimate state, taking into account the window sills, changes in the rigidity of the walls and the progressive destruction of the weakest piers.
Tasks: - study of seismic resistance of buildings with stone walls; - development of entiseseismic belts of precast-monolithic construction and experimental investigations of their strength, deformations and cracks; - numerical studies of the strength of the belts in buildings; -development of methods of their construction and calculation.
Scientific problem: - the lack of an effective, highly technological design and method of calculation, the anti-seismic precast-monolithic belts of buildings, which ensure the combined operation of the prefabricated blocks with monolithic concrete of the core and as a whole with the walls, up to the stage of destruction.
Scientific novelty and originality. A precast-monolithic design of antiseismic belts of buildings (the author's invention) was developed, ensuring the combined operation of the precast hollow block and a monolithic core (edges along its entire height) up to the stage of destruction, significantly increasing its carrier (up to 2 times) ability to. A solid contact of a monolithic beam with a wall located below reaches 70 ÷ 75% of the total belt bearing area, with a norm of ≥ 60%. A technique has been developed for the design and calculation of the proposed belts, taking into account the action of seismic forces, according to their limiting conditions, preventing progressive destruction of the walls.
Fundamentally new results for science and practice. The design of anti-seismic precastmonolithic belts and the method of their calculations increase the seismic resistance of buildings. They are practically applicable in buildings with stone and frame-stone walls, as well as in monolithic, prefabricated-monolithic, frame buildings with different walls, diaphragms and free spans.
The introduction of scientific results. The developed design of the belts is used in the construction of a 9-storey complex residential building in Chisinau, the outside Ion Soltâs.