Crack Resistance and Deformability of Plates of Variable Thickness

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Abstract

This article discusses the issues related to the strength and stability of reinforced concrete slabs of variable thickness. Such structures are widely used in modern construction, especially in buildings of complex architectural shape, industrial structures and engineering facilities. Reinforced concrete structures of variable thickness present a special problem for design engineers due to the complexity of the distribution of internal forces and the nature of the loads. Correct consideration of all factors affecting the strength and rigidity of such structures ensures the reliability, safety and durability of structures. The article identifies the problems of calculating slabs with different support structures and the method of their connection with a plate element of variable thickness, highlights the issues of determining the cracking load in reinforced concrete slabs of variable thickness taking into account the thrust forces arising from the contour elements, as well as determining the deflections at the time of crack formation. An assessment of the deflections of reinforced concrete elements is made, determining the width of the deformed zone under various clamping conditions.

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About the authors

B. A. Bondarev

Lipetsk State Technical University

Author for correspondence.
Email: lnsp-48@mail.ru

Doctor of Sciences (Engineering)

Russian Federation, 30, Moskovskaya St., Lipetsk, 398042

I. A. Suslov

Lipetsk State Technical University

Email: kaf-arch@stu.lipetsk.ru

Candidate of Sciences (Engineering)

Russian Federation, 30, Moskovskaya St., Lipetsk, 398042

A. B. Bondarev

Lipetsknitsstroyproekt LLC

Email: lnsp-48@mail.ru

Commercial Director

Russian Federation, Off. 602, 11, Balmochnykh St., Lipetsk, 398002

V. K. Zhidkov

Tambov State Technical University

Email: gidkov_vova_1999@mail.ru

Postgraduate Student

Russian Federation, Bldg. 2, 106/5, Sovetskaya St., Tambov, 392000

References

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Supplementary files

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2. Fig. 1. Diagram of the forces of a flat stress state occurring in the coffer of a ribbed plate screw shelf

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3. Fig. 2. Calculation scheme of the plate shelf when determining the maximum deflection

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4. Fig. 3. Calculation scheme of the caisson of the screw shelf of the reinforced concrete coating plate: a – schemes of the fracture of the clamped slabs of rectangular and square shapes, respectively; b, c, d – calculation schemes, respectively, for a deformed slab, taking into account the deflection from the contour flexibility and the deflection of the contour flexibility, as well as the deformations of the slab

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