Modeling of systems and processes

Моделирование систем и процессов

2219-0767

57878

10.12737/2219-0767-2023-16-1-18-26

Технические науки

Modeling of the stress-strain state of brickwork of a single-storey non-residential building

Моделирование напряженно-деформированного состояния кирпичной кладки одноэтажного нежилого здания

Николенко

Сергей Дмитриевич

Nikolenko

S. D.

Сазонова

Светлана Анатольевна

Sazonova

Svetlana Anatol'evna

Уваров

Владислав Олегович

Uvarov

Vladislav Olegovich

Воронежский государственный технический университет Voronezh State Technical University

29 03 2023

16 1 18 26 23 03 2023

https://zh-szf.ru/en/nauka/article/57878/view

Рассматривается применение метода конечных элементов (МКЭ) для расчета кирпичных конструкций одноэтажного здания на стадии проектирования. Воспроизводится напряженно-деформированное состояние критичной кладки здания. С этой целью применена деформационная теория пластичности А.А. Ильюшина, зависимости напряжений от деформаций по существующим нормам для расчета кирпичной кладки зданий. Анализируются результаты натурного испытания с применением метода неразрушающего контроля. В результате мониторинга технического состояния несущих конструкций исследуемого здания выявлены дефекты, появившиеся на стадии возведения здания и при его эксплуатации. Полученные результаты по двум методам сопоставлены, определена степень износа строительных конструкций каменной кладки, после чего разработаны рекомендации для улучшения текущего технического состояния рассматриваемого кирпичного здания. Установлено, что после завершения ремонтных работ и при дальнейшей эксплуатации строительного объекта необходимо соблюдать предписания по текущей конструктивной профилактике здания на основании требований действующих нормативных актов. Также была проанализирована возможность надстройки выполнения надстройки второго этажа на существующие конструкции. Выявлено, что на данный момент выполнение надстройки невозможно, так как для того чтобы стало возможным выполнить надстройку второго этажа, должны быть соблюдены условия, обеспечивающие усиление конструкций для безопасности эксплуатации нижнего этажа при увеличении на него нагрузки за счет опирания на него дополнительного этажа.

The application of the finite element method (FEM) for the calculation of brick structures of a single-storey building at the design stage is considered. The stress-strain state of the critical masonry of the building is restored. For this purpose, the deformation theory of plasticity of A.A. Ilyushin, the dependence of stresses on deformations according to existing norms for the calculation of brickwork of buildings is applied. The results of full-scale testing using the method of non-destructive testing are analyzed. As a result of monitoring the technical condition of non-existing structures of the building under study, defects that appeared at the stage of construction of the building and during its operation were revealed. The results obtained by the two methods were compared, the degree of wear of masonry building structures was determined, after which recommendations were developed to improve the current technical condition of the brick building under consideration. It is established that after the completion of repair work and during the further operation of the construction object, it is necessary to comply with the requirements for the current constructive prevention of the building on the basis of the requirements of the current normative acts. The possibility of the superstructure of the second floor superstructure on existing structures was also analyzed. It is revealed that at the moment it is impossible to perform the superstructure, since in order to make it possible to perform the superstructure of the second floor, the conditions must be met to strengthen the structures for the safety of the operation of the lower floor with an increase in the load on it due to the support of an additional floor on it.

Несущие конструкции метод конечных элементов проектирование метод неразрушающего контроля процесс обследования технического состояния дефекты разработка рекомендаций.

Load-bearing structures finite element method design non-destructive testing method technical condition inspection process defects development of recommendations

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