The Issue of Determination of the Rigidity Characteristics of Reinforced Concrete Elements with Normal Cracks

  • Authors

    • Taliat Аzizov
    • Nataliia Sribnyak
    • Liudmyla Tsyganenko
    • Oleg Yurin
    2018-10-13
    https://doi.org/10.14419/ijet.v7i4.8.27238
  • normal crack, reinforced concrete ribbed slab, torsion, torsional rigidity

  • Abstract

    Most of the reinforced concrete slab structures are statically indeterminate systems. In these systems, the redistribution of internal forces depends on the nature redistribution of rigidities between their separate elements. The presence of cracks significantly affects the change of elements rigidity of reinforced concrete structures. In the plate-ribbed systems, which include bridge structures, ribbed prefabricated and monolithic slabs, at the moment when normal cracks are wide enough, spatial torsion cracks may be absent. In this article the method of  analysis of the rigidity of reinforced concrete elements with normal cracks is presented. The method is based on approximate striping of cross section to separate lines. The method is approximate, but it is rather convenient, since it can be used as a subprogram for analysis of complex statically indeterminate reinforced concrete systems. The torsional rigidity of every rod of the system is determined in such a subprogram at  iterative analysis in  automatic mode. As a result of this analysis, the forces in the rods of statically indeterminate system s are determined more accurately as the change of flexural as well as torsional rigidities caused by normal cracks formation were taken into account. The comparison of the results obtained by the torsional rigidity determination method with the results obtained by the numerical method confirmed the  developed methodology

     

     

  • References

    1. [1] Azizov T.N. Prostorova robota zalizobetonnykh perekryttiv. Teoriia ta metody rozrakhunku: Avtoref. dyss. … dokt. tekhn. nauk: 05.23.01 / Poltavskyi natsionalnыi tekhnichnyi universytet. – Poltava, 2006. – 35 p.

      [2] Gornov V.N. Issledovanie prochnosti i zhestkosti industrial'nyh konstrukciy zhilyh domov. – M.: Gosstroyizdat, 1954. – 240 p.

      [3] Bondarenko V.M. Inzhenernye metody nelineynoy teorii zhelezobetona. / V.M. Bondarenko, S.V. Bondarenko – M.: Stroyizdat, 1982. – 287 p.

      [4] Gurevich A.L. O sposobakh rascheta zhelezobetonnykh plit na EVM s uchetom protsessa treshchinoobrazovaniya/ A.L. Gurevich, N.I. Karpenko, L.I. Yarin // Stroitelnaya mekhanika i raschet sooruzheniy . – 1972.–№1.– P. 24–29.

      [5] Kvasha V.G. Prostoroviy rozrakhunok plitno-rebristikh sistem z vrakhuvannyam nelÑ–nÑ–ynogo rozpodÑ–lu zhorstkostÑ–/ V.G. Kvasha, І.G. Іvanik // MaterÑ–ali UkraÑ—nskogo mÑ–zhgaluzevogo naukovo-praktichnogo semÑ–naru „SuchasnÑ– problemi proektuvannya, budÑ–vnitstva ta ekspluatatsÑ–Ñ— shtuchnikh sporud na shlyakhakh spoluchenyaâ€. – KiÑ—v, 1998. – p. 104–107.

      [6] Yaremenko A.F. Prikladnaya teoriya dlitelnogo deformirovaniya i soprotivleniya ploskikh zhelezobetonnykh elementov: avtoref. dis. na soiskanie uchen. stepeni dokt. tekhn. nauk: spets. 05.23.01 "Stroitelnye konstruktsii, zdaniya i sooruzheniya" / A.F. Yaremenko.– M., 1989.

      [7] Karpenko N.I. Obschie modeli mehaniki zhelezobetona. – M.: Stroyizdat, 1996. – 416 p.

      [8] Karpenko N.I. Teoriya deformirovaniya zhelezobetona s treschinami. – M.: Stroyizdat, 1976. – 208 p.

      [9] Azizov T.N. Opredelenie krutil'noy zhestkosti zhelezobetonnyh elementov s treschinami//Dorogi і mosti. Zbіrnik naukovih prac'. Vip. 7.Tom 1. – Kiїv: DerzhdorNDІ, 2007. – p. 3–8.

      [10] Azizov T.N. Construction and Calculation of Reinforced Concrete Overlap with A High Spatial Work Effect/ T.N. Azizov, A.G. Azizova, Sakr Al Ghadban// International Journal of Engineering & Technology, 7 (3.2) (2018) p.567–574.

      [11] Piskunov, V. G., Gorik, A. V., & Cherednikov, V. N. (2000). Modeling of transverse shears of piecewise homogeneous composite bars using an iterative process with account of tangential loads 2. resolving equations and results. Mechanics of Composite Materials, 36(6), 445-452. https://doi.org/10.1023/A:1006798314569

      [12] Kochkarev, D., & Galinska, T. (2017). Calculation methodology of reinforced concrete elements based on calculated resistance of reinforced concrete. Paper presented at the MATEC Web of Conferences, 116 https://doi.org/10.1051/matecconf/201711602020

      [13] Kochkarev, D., Azizov T., & Galinska, T. (2018) Bending deflection reinforced concrete elements determination. Paper presented at the MATEC Web of Conferences, 230 https://doi.org/10.1051/matecconf/201823002012

  • Downloads

  • How to Cite

    Аzizov, T., Sribnyak, N., Tsyganenko, L., & Yurin, O. (2018). The Issue of Determination of the Rigidity Characteristics of Reinforced Concrete Elements with Normal Cracks. International Journal of Engineering & Technology, 7(4.8), 185-189. https://doi.org/10.14419/ijet.v7i4.8.27238

    Received date: 2019-02-11

    Accepted date: 2019-02-11

    Published date: 2018-10-13