Using plaxis for slab foundation calculation on undermined territories

Authors

Keywords:

contact tensions, undermined territories, round foundation slab, PLAXIS

Abstract

. Purpose. Slab foundation calculation problem (for example round slab foundation) on the undermined territories is difficult and we need to get analysis and inventory a huge amount of factors for receiving satisfactory solution. The guidelines show us solution of this problem with linear form. It`s describing occurred processes approximately. Numerical methods application (for example finite elements method) can remove this disadvantage. In this case, huge amount of factors need to use computer technologies for calculation rationalization. Comparison of the contact tensions calculation results (linear calculation and calculation with PLAXIS) on round foundation slab base with radial bended ground base on undermined territories was our aim.

Methodology. For this task execution we defined calculated values of contact tensions on round slab foundation base of tower-type building with radial bend I÷IV groups. Calculation was made for different type of deformation: a) convexity curvatures and full contact of foundation base with soil; b) concavity curvatures and full contact of foundation base with soil; c) convexity curvatures and not full contact of foundation base with soil; d) concavity curvatures and not full contact of foundation base with soil. Deformation radius varied from 1 to 15 km. Round foundation slab designed as rigid.

Originality. Comparison of two calculation can show us that the calculation with using PLAXIS gives us lower unfavorable contact tensions (12…19 % lower than linear solution) and aligned diagrams (non-contact zone is absent).

Practical value. PLAXIS using for round foundation calculation in case of undermined territories allow modeling round foundation slab interaction with non-uniform deformated base more qualitative.

Author Biographies

R. A. Timchenko, Department of industrial, civil and urban building, State higher educational institution "Kryvyi Rih National University"

Dr. Sc. (Tech), Prof.,

D. A. Krishko, Department of industrial, civil and urban building, State higher educational institution "Kryvyi Rih National University"

Cand. Sc., senior lect.

A. V. Bogatynskiy, Department of industrial, civil and urban building, State higher educational institution "Kryvyi Rih National University"

PhD student

V. O. Savenko, Department of industrial, civil and urban building, State higher educational institution "Kryvyi Rih National University"

PhD student

References

DBN V. 1.1.–5–2000. Zakhyst vid nebezpechnykh heologichnykh protsesiv. Budynky ta sporudy na pidrobluvalnykh terytoriiakh ta prosidaiuchykh gruntakh [State Building Guidelines V. 1.1.–5–2000. Protection from dangerous geological processes. Buildings and construction on undermined territories and giving soils]. Kyiv, 2000. 70 p.

Rogova T.B. Sdvizheniya i deformatsii porod i zemnoy poverkhnosti pri vedenii gornykh rabot [Movement and deformation of rocks and soil surface with mining operations]. Kemerovo, KuzGTU Publ., 2015. 50 p.

Gusev V.N. Volokhov E.M. Sdvizhenie i deformatsii gornykh porod [Movement and deformation of mining rocks]. Sankt-Peterburg, Sankt-Peterburgskiy gornyy institut im. G. V. Plekhanova, 2003. 83 p.

Rukovodstvo po proektirovaniyu zdaniy i sooruzheniy na podrabatyvaemykh territoriyakh. Chast III. Bashennye, transportnye, i zaglublennye sooruzheniya, truboprovody [Guidelines of buildings and construction on undermined territories design. Part III Tower-type, transport and underground constructions, pipes]. Moscow, Stroyizdat Publ., 1985. 211 p.

Varvak P.M. Varvak L.P. Metod setok v zadachakh stroitelnykh konstruktsiy [Grating method in building constructions problem]. Moscow, Stroyizdat Publ., 1977. 204 p.

Klepikov S.N. Paschet konstruktsiy na deformiruemom osnovanii [Constructions on deformating base calculation]. Kyiv, NIISK Publ., 1996. 204 p.

Timchenko R.A. Primenenie program MKE dlya modelirovaniya raboty sistemy “osnovanie – inzhenernoe sooruzhenie” v usloviyakh neravnomernykh deformatsiy osnovaniya [FEM programs using for “base – construction” system behavior modeling in case of non-uniform base deformations]. Visnyk Kryvorizkogo Tekhnichnogo Universytetu [Bulletin of Kryvorizhkyi Tehnichyy Universytet], 2008, issue 21, pp. 113-116.

Bazarov B.A., Konnov A.V., Konakbaeva A.N., Bekezhanova D.A. Voprosy opredeleniya nesushchey sposobnosti buronabivnykh svay na sovremennom etape proektirovaniya [Bored piles bearing capacity definition problems in modern design]. Tekhnologiya proizvodstva metallov i vtorichnykh materialov - Technology of production of metals and recycled materials, 2012, issue 1, pp. 241-245.

Kalnitskiy A.A., Peshkovskiy L.M. Raschet i konstruirovanie zhelezobetonnykh fundamentov grazhdanskikh i promyshlennykh zdaniy i sooruzheniy [Civil and industrial ferroconcrete foundations calculation and design]. Moscow, Vysshaya Shkola Publ., 1975. 261 p.

Timchenko R.A. Metodika rascheta kruglykh plitnykh fundamentov v usloviyakh neravnomerno-deformiruemogo osnovaniya pri slozhnom nagruzhenii [Round slab foundation on non-uniform deformated base calculation method]. Kryvoy Rog, Kryvyi Rih Technical University Publ., 2008. 24 p.

Issue

Section

Computer systems and information technologies in education, science and management