ESTIMATION OF LOCAL DEFECTS OF loaded SLABS CONSIDERING A STEP CHANGE IN DESIGN DIAGRAM
Abstract
The paper presents the analysis of structural behavior with defects. It is shown that the influence of local defects on the stress-strain state of the structure is demonstrated at one of the loading stages. The estimation of stress-strain state of defective structure requires the use of computational methods to track the gradual stress accumulation and redistribution. The multi-stage computational analysis accounts for the available reserves of bearing capacity of the structure with defects. Design analysis of defective structures performed using the traditional technology in terms of the stress superposition principle gives an extremely conservative estimate of the stress-strain state, which is defined by the inability to take into account such important factors as design and multi-mode structural behavior at a local excess of bearing capacity leading to the force redistribution.
About the Authors
OLEG V. Kabantsev
Moscow State University of Civil Engineering
Russian Federation
Russian Federation
SERGEI V. Gorbatov
Moscow State University of Civil Engineering
Russian Federation
Russian Federation
KIRILL O. Pesin
OOO 'MonolitStroiProekt'
Russian Federation
Russian Federation
References
1. Kabantsev O.V. Raschet konstruktsii mnogoetazhnykh i vysotnykh zhelezobetonnykh zdanii s uchetom izmeneniya osnovnykh parametrov raschetnoi modeli v rezhimakh vozvedeniya i ekspluatatsii [Structural analysis of multistoried and tall reinforced concrete buildings]. Proc. 3rd All-Rus. Conf. on Concrete and Reinforced Concrete. 2014. V. 1. Pp. 282–292. (rus)
2. Kabantsev O.V., Karlin A.V. Raschet nesushchikh konstruktsii s uchetom istorii vozvedeniya i poetapnogo izmeneniya osnovnykh parametrov raschetnoi modeli [Load-bearing structural analysis and main parameter change in design model]. J. Industrial and Civil Engineering. 2012. No. 7. Pp. 33–35. (rus)
3. Kabantsev O., Perelmuter A. Modeling transition in design model when analyzing specific behaviors of structures. Proc. 11th Int. Conf. on Modern Building Materials, Structures and Techniques MBMST 2013. Procedia Engineering. 2013. V. 57. Pp. 479–488.
4. Gorodetskii S.A., Evzerov I.D. Komp'yuternye modeli konstruktsii [Computer models of structures]. Kiev : Fakt Publ., 2007. 394 p. (rus)
5. Snehal D., Poojara, Paresh V. Patel Axial deformation of columns in multi-story R.S. buildings. International Journal of Civil Engineering and Technology (IJCIET). 2014. V. 5. No. 3. Pp. 294–300.
6. Kim H.S., Shin A.K. Column shortening analysis with lumped construction sequences. Procedia Engineering. 2011. V. 14. Pp. 1791–1798.
7. Jayasinghe M.T.R., Jayasena W.M.V.P.K. Effects of axial shortening of columns on design and construction of tall reinforced concrete buildings, ASCE – Practice Periodical on Structural Design and Construction. 2004. V. 9. No. 2. Pp. 70–78.
8. Burago N.G. Modelirovanie razrusheniya uprugoplasticheskikh tel [Elastoplastic body fracture modeling]. Computational Continuum Mechanics. 2008. V. 1. No. 4. Pp. 5–20. (rus)
9. Vil'deman V.E., Sokolkin Yu.V., Tashkinov A.A. Mekhanika neuprugogo deformirovaniya i razrusheniya kompozitsionnykh materialov [Mechanics of inelastic deformation and fracture od composites]. Moscow : Nauka, Fizmatlit Publ., 1997. 228 p. (rus)
10. Szary T., Köckritz V. Numerische Bewertung lokaler Verschwächungen in Ölfeldrohren, Erdöl, Erdgas Kohle. Hammburg/Wien. 2004. V. 11. Pp. 403–407. (Germ.)
11. Novoselov A.V., Vil'deman V.E. Issledovanie kharaktera protsessa razrusheniya ortotropnykh plastin s kontsentratorami napryazhenii na baze vychislitel'nogo eksperimenta [Computing experiment of fracture process of orthotropic plates with stress concentrators]. PNRPU Mechanics Bulletin. 2012. No. 4. Pp. 66–78. (rus)
12. Kabantsev O.V., Tamrazyan A.G. Uchet izmenenii raschetnoi skhemy pri analize raboty konstruktsii [Design model modification at structural analysis]. Magazine of Civil Engineering. 2014. No. 5. Pp. 15–26. (rus)
13. Rzhanitsyn A.R. Raschet sooruzhenii s uchetom plasticheskikh svoistv materialov [Structural analysis and plastic properties of materials]. Moscow : SI Publ., 1954. 289 p. (rus)
14. Krylov S.M. Pereraspredelenie usilii v staticheski neopredelimykh konstruktsiyakh [Force redistribution in statically redundant structures].Moscow : SI Publ., 1964. 168 p. (rus)
15. Perel'muter A.V., Slivker V.I. Raschetnye modeli sooruzhenii i vozmozhnost' ikh analiza [Structural design and analysis of models ]. Moscow : SKADSOFT, ASV, DMK Press, 2011. 709 p. (rus)
16. Kabantsev O.V. Verifikatsiya raschetnoi tekhnologii ‘Montazh’ programmnogo kompleksa SCAD [‘Montazh’ design technique verification of SCAD software]. Int. J. Computational Civil and Structural Engineering. 2011. No. 3. V. 7. Pp. 103–109. (rus)
17. Sergeev N.D. Raschet staticheski neopredelimykh sistem pri ikh mnogokratnoi posledovatel'noi modifikatsii [Statically redundant structure design at multiple subsequent modification]. Stroit. mekh. i raschet sooruzhenii. 1975. No. 6. Pp. 11–16. (rus)
18. Mazhid K.I. Optimal'noe proektirovanie konstruktsii [Optimum structural design]. Moscow : Vysshaya Shkola Publ., 1979. 237 p. (rus)
Review
For citations:
Kabantsev O.V., Gorbatov S.V., Pesin K.O. ESTIMATION OF LOCAL DEFECTS OF loaded SLABS CONSIDERING A STEP CHANGE IN DESIGN DIAGRAM. Vestnik of Tomsk state university of architecture and building. 2015;(2):89-108. (In Russ.)
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