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Fatigue strength of ribbed reinforcing bars made of the B500SP steel

100%

Szlachetka O., Dohojda M., Mazurczuk R., Lusawa M.

Acta Scientiarum Polonorum. Architectura

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2017

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tom 16

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nr 1

In the paper, the fatigue strength of ribbed reinforcing bars, not embedded in concrete, with the diameter of 32 mm, made of the B500SP steel grade for pulsating tensile stress, has been determined. The fatigue tests were performed on the Instron 8806 machine under axial tensile loading. Each of the fatigue tests was run until damage or up to 2·10⁶ cycles of loading. The fatigue tests were performed on 12 specimens. The specimens were cut from one bar of the length 12 m. The fatigue strength of the steel being tested was determined by the classical method consisting in making of a Wöhler curve (S log N curve). The determined fatigue strength Zrj = 135 MPa for 2·10⁶ cycles constitutes ca. 22% of the tensile strength and also is much lower than the yield point (it is ca. 26% of its value). The paper identifies the factors that may affect the value of the fatigue strength.

2

Destructive moments study of concrete beams reinforced with armature connection

75%

Luchko Y., Pentsak A.

Acta Scientiarum Polonorum. Architectura

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2014

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tom 13

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nr 1

For reinforcement of prestressed concrete structures using reinforced thermo-hardened steel rebar standard length 12 m class A400, A500, A600, A800 with periodic profile. However, thermo-hardened steel rebar is essential for the production flaw - bad soldered, welded connection to that she did not meet the performance requirements for fittings in this class. Since adhesion to concrete reinforcement studied mainly experimental method because the results depend on many factors. This paper presents the design of prototypes, methods of testing and analysis of the strength of concrete beams reinforced with connected valves. Experimental research program provides four series test reinforced concrete beams crossing 120 X 220 mm length 2000 mm bend with two concentrated forces. Experimental beams were reinforced with welded frame constructions of armature 4 0 8 A400 and working pre-stressed armature 0 12 A500C. Steel bars in reinforced concrete beams connected by crimp sleeves. To determine the characteristics of strength, deformation and crack-resisting of experimental beams they were tested for bending to destruction.

3

Strength and stability of structures with nodes flexible in terms of shift

75%

Zamorowski J.

Acta Scientiarum Polonorum. Architectura

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2021

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tom 20

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nr 1

4

Investigation of heating time of a bundle of steel bars

75%

Aghbalyan S., Bagdasaryan V., Wyczolkowski R.

Acta Scientiarum Polonorum. Architectura

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2022

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tom 21

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nr 3

5

Static analysis of a variable cross-section element under load

51%

Zamorowski J.

Acta Scientiarum Polonorum. Architectura

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2021

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tom 20

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nr 2

Ograniczanie wyników

5 Acta Scientiarum Polonorum. Architectura

2 Zamorowski J.

1 Aghbalyan S.

1 Bagdasaryan V.

1 Dohojda M.

1 Luchko Y.

1 Lusawa M.

1 Mazurczuk R.

1 Pentsak A.

1 Szlachetka O.

1 Wyczolkowski R.

1 2022

2 2021

1 2017

1 2014

Fatigue strength of ribbed reinforcing bars made of the B500SP steel

Destructive moments study of concrete beams reinforced with armature connection

Strength and stability of structures with nodes flexible in terms of shift

Investigation of heating time of a bundle of steel bars

Static analysis of a variable cross-section element under load