SU1481359A1

SU1481359A1 - Reinforcement structure for a ferroconcrete girder

Info

Publication number: SU1481359A1
Application number: SU874248550A
Authority: SU
Inventors: Евгений Александрович Рабинович; Виталий Леонидович Благов; Александр Александрович Бохотский
Original assignee: Проектный И Научно-Исследовательский Институт Харьковский Промстройниипроект
Priority date: 1987-05-21
Filing date: 1987-05-21
Publication date: 1989-05-23

Abstract

Изобретение относитс к области строительства и может быть использовано при реконструкции промышленных и гражданских зданий и сооружений и позвол ет повысить несущую способность железобетонных балок. Конструкци усилени железобетонной балки 1 включает приклеенный к нижней грани металлический лист 2 и элементы креплени металлического листа к балке 1. Элементы креплени выполнены в виде двух гибких напр женных т жей 3, расположенных на боковых поверхност х балки 1 в раст нутой зоне у ее нижней грани, и нижних 4 и верхних 5 напр гаемых вертикальных анкеров. Напр гаемые вертикальные анкера 4, 5 расположены поочередно на боковых поверхност х балки 1. При этом нижние анкера 4 верхними концами закреплены на гибких напр женных т жах 3, а нижними концами закреплены на верхней грани металлического листа 2. Верхние анкера 5 верхними концами закреплены на верхней грани балки 1, а нижними концами закреплены на гибких напр женных т жах 3. Концы гибких напр женных т жей 3 закреплены на торцах балки 1. Нижние 4 и верхние 5 напр гаемые вертикальные анкера в опорных зонах балки 1 установлены с меньшим шагом, чем в пролете. 1 з.п. ф-лы, 2 ил.The invention relates to the field of construction and can be used in the reconstruction of industrial and civil buildings and structures and allows to increase the bearing capacity of reinforced concrete beams. The reinforcement structure of reinforced concrete beam 1 includes a metal sheet 2 glued to the bottom edge and metal sheet fastening elements to the beam 1. The fastening elements are made in the form of two flexible tension strands 3 located on the side surfaces of the beam 1 in the stretched zone at its bottom edge , and lower 4 and upper 5 tensioned vertical anchors. The vertical tension anchors 4, 5 are alternately arranged on the side surfaces of the beam 1. In this case, the lower anchors 4 are fixed to the flexible tension strands 3 by the upper ends, and the lower ends are fixed to the upper edge of the metal sheet 2. The upper anchors 5 are fixed to the upper ends the upper edge of the beam 1, and the lower ends are fixed on the flexible tension strands 3. The ends of the flexible tension strands 3 are fixed on the ends of the beam 1. The lower 4 and upper 5 tension vertical anchors in the supporting zones of the beam 1 are installed with a smaller pitch than at the span. 1 hp f-ly, 2 ill.

Description

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Изобретение относитс к строительству и может быть использовано дл усилени железобетонных балок при реконструкции промышленных и гражданских зданий и сооружений.The invention relates to construction and can be used to reinforce reinforced concrete beams in the reconstruction of industrial and civil buildings and structures.

Цель изобретени - повышение несущей способности балки.The purpose of the invention is to increase the bearing capacity of the beam.

На фиг. 1 изображена конструкци усилени железобетонной балки, общий вид на фиг. 2 - разрез А-А на фиг. 1.FIG. 1 shows the reinforcement reinforcement construction of a reinforced concrete beam; the general view of FIG. 2 shows section A-A in FIG. one.

Конструкци усилени железобетонной балки 1 содержит приклеенный к нижней грани балки металлический лист 2 и элементы креплени металлического листа 2 к балке 1. Элементы креплени выполнены в виде двух гибких напр женных т жей 3, расположенных на боковых поверхност х балки 1 в раст нутой зоне у ее нижней грани, и нижних 4 и верхних 5 напр гаемых вертикальных анкеров. Напр гаемые , вертикальные анкеры 4 и 5 расположеThe reinforcement structure of reinforced concrete beam 1 contains a metal sheet 2 glued to the bottom edge of the beam and the fastening elements of the metal sheet 2 to the beam 1. The fastening elements are made in the form of two flexible tension strings 3 located on the side surfaces of the beam 1 in the stretched zone at its lower edge, and lower 4 and upper 5 tensioned vertical anchors. Tight, vertical anchors 4 and 5 are located

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При усилении железобетонной балки 1 создание предварительного напр жени в гибких напр женных т жах 3, а также в нижних 4 и sepxkrfx 5 напр женных анкерах позвол ет поддерживать посто нное прижатие приклеиваемого металлического листа 2 к железобетонной балке 1, обеспечива их совместную работу в процессе эксплуатации усиливаемой конструкции.When reinforced concrete beam 1 is created, the creation of prestressing in flexible tension joints 3, as well as in the lower 4 and sepxkrfx 5 tension anchors allows maintaining a constant pressure of the glued metal sheet 2 to the reinforced concrete beam 1, ensuring their joint operation during operation reinforced design.

Claims

1. Construction of reinforcement of reinforced concrete beams, including a metal sheet glued to the bottom edge of the beam and metal sheet fastening elements, characterized in that, in order to increase the beam carrying capacity, the fastening elements are made in the form of two flexible strands located on the side surfaces x beams in races

alternately on the lateral surfaces of the 25-toned area at its lower face, and

beams 1. In this case, the lower tension anchors with 4 upper ends are fastened on flexible tension straps 3, and the lower ends of lower tension anchors 4 are fixed on the lower face with their ends fixed on flexible

lower and upper tensioned vertical anchors alternately arranged on the side surfaces of the beam, while the lower anchors top

sheet 2. The upper tension anchors 5 are fixed to the upper edge of beam 1 by their upper ends, and the upper elastic anchors 5 are fixed to flexible tension straps by their lower ends 3. The flexible tensioned ends of rubber 3 are fixed to the ends of beam 1.

The lower 4 and upper 5 tensioned vertical anchors in the support zones of the legs 1 can be installed with a smaller pitch than in the middle part.

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straps, and the lower ends are fixed to the lower edge of the metal sheet, the upper anchors are fixed to the upper face of the beam, and the lower ends are fixed to flexible loads, and the ends of flexible loads are fixed at the ends of the beam .

2. The structure according to claim 1, which differs from the fact that the lower and upper tensioned vertical arrays in the support zones of the beam are installed with a smaller pitch than in the span

their ends are fixed on flexible

lower and upper tensioned vertical anchors located alternately on the lateral surfaces of the beam, with the lower anchors top5

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with the lower ends attached to the lower edge of the metal sheet, the upper anchors with the upper ends attached to the upper edge of the beam, and the lower ends attached to the flexible tensile weights, with the ends of the flexible tensile shears attached to the ends of the beam.

2. Design according to claim 1, characterized in that the lower and upper tensioned vertical anchors in the support zones of the beam are installed with a smaller pitch than in the span.

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frM. Blanar Editor

Compiled by A. Bulov

Tehred A. Kravchuk Proofreader S. Cherni

Order 2647/30

Circulation 645

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

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