Architectural and constructive decisions of a triangular reinforced concrete arch with a self-stressed steel brace

Semko, A. N.; Hasenkо, Аnton; Fenko, Oleksiy; Arch, Joseph; Dariienko, Viktor

doi:10.32515/2664-262x.2020.3(34).209-217

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Створення попередніх напружень бетонного ядра і сталевої обойми дозволяє підвищити загальну несучу здатність та зменшити деформативність вказаних елементів [3].…”

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Experience of Creating Preliminary Self-Stressed in Compressed Steel-Reinforced Concrete Elements

HASENKO¹

2022

УЖБА

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Problem statement. Compressed steel-reinforced concrete structures work effectively as individual racks or columns of buildings and structures for various functional purposes, and as compressed elements of spatial steel-reinforced concrete structures (for example, compressed truss members). Usually, such structures consist of a steel shell filled with concrete. The creation of the concrete core preliminary compressive stresses allows increasing the overall bearing capacity and reducing the deformability of the specified compressed elements. Purpose of the article is to analyze the existing practical methods of creating preliminary compressive stresses in the concrete core of compressed steel-reinforced concrete structures and to distinguish from them methods of the concrete core self-stressed without the use of special mechanical and force measures. Conclusion. Based on the analysis of existing scientific publications in the indicated direction, it was found that pre-stressed in the concrete core of compressed steel-reinforced concrete elements can be created due to the preliminary compression of the concrete core with jacks in outer steel pipe-shell (in a through shell), cutting outer steel shell with deformation seams into separate sections, installation of a pre- stressed double shell, etc. Preliminary self-stressed in the concrete core are created due to the following measures: use for concrete solution preparation stressed cement or a concrete mixture compaction by centrifugation during the combined structures manufacture. The specified methods of creating preliminary stresses can also be used when strengthening existing steel structures by concreting or inclusion in the steel shell joint operation reinforced concrete columns reinforcement.

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Experience of Creating Preliminary Self-Stressed in Compressed Steel-Reinforced Concrete Elements

HASENKO¹

2022

УЖБА

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Calculation of the Constructive Nonlinearity of Ribbed Reinforced Concrete Slabs of Self-Stressed Covering Panels

Hasenko,

Semko,

Skliarenko

2023

Slovak Journal of Civil Engineering

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Precast reinforced concrete constructions meet the requirements of industrialization, high manufacturability, and cost-effectiveness at a reasonably high level. The ribs in constructions perform load-bearing functions, and the slab part performs enclosing functions. Often before the installation of such structures at a construction site, they are mounted from assembly elements. The overall dimensions of the elements are limited by transportation requirements. During such an aggregated mounting, the assembly units work according to a calculation scheme that differs from an operational scheme. The structural nonlinearity of ribbed reinforced concrete slabs during transportation, mounting, and installation, and the operation of a combined spatial covering panel were investigated in this paper. The effects were identified, and a rational design of nodes connecting the individual prefabricated units into a spatial structure was developed. With the help of these nodes, it is possible to create unloading support moments, which will reduce the internal forces in the design cross-sections. The effects of changes in the width of the reinforced concrete slab shelves on the internal forces of the load-bearing ribs of a wall and a roof panel were investigated.

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Architectural and constructive decisions of a triangular reinforced concrete arch with a self-stressed steel brace

Cited by 2 publications

References 5 publications

Experience of Creating Preliminary Self-Stressed in Compressed Steel-Reinforced Concrete Elements

Experience of Creating Preliminary Self-Stressed in Compressed Steel-Reinforced Concrete Elements

Calculation of the Constructive Nonlinearity of Ribbed Reinforced Concrete Slabs of Self-Stressed Covering Panels

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