CALCULATION OF DEFORMATIONS AND PRESSURE IN CONCRETE MONOLITHIC PLATES OF THE COVERINGS

Zheltkovich A.E., Brest State Technical University, Brest, the Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Veremejchik A.I., Brest State Technical University, Brest, the Republic of Belarus

In work the problem of calculation of the is intensedeformed condition of a monolithic concrete plate of a covering on the basis of the known differential equation describing shrinkable deformations in the conditions of restriction shrinkage from outside of the basis is solved. The algorithm is developed for definition of the is intensedeformed condition in a plate. By results of researches mathematical modelling of the is intensedeformed condition of the concrete stripsplates made in laboratory of the Brest state technical university is presented. It is shown that distribution of deformations of the stripplate, received at the analysis of experimental data and calculated with model use, has high correlation, and calculation of pressure without the account of the relaxation caused by creep of concrete, gives considerable overestimate of values of pressure.

Stress-strain state, the calculation of the deformation, mathematical modeling, monolithic concrete plates

• Stroit. normy i pravila 2.03.13-88. Poly [Building standards and rules. Floors]. Moscow, CITP Gosstroja SSSR, 1988. 16 p.
• Ulickij I.I. Teorija i raschet zhelezobetonnyh sterzhnevyh konstrukcij s uchetom dlitel'nyh processov [Theory and calculation of reinforced concrete beam structures taking into account long-term processes]. Kiev, Budivel'nik, 1967. 346 p.
• Ulickij I.I., Chzhan Chzhun-jao, Golyshev A.B. Raschet zhelezobetonnyh konstrukcij s uchetom dlitel'nyh processov [Calculation of reinforced concrete structures taking into account long-term processes]. Kiev, Gosstrojizdat USSR, 1960. 495 p.
• Pettersson Dan. Stresses in concrete structures from ground restraint. Licentiate thesis, 1998, Part 1. 58 p. Part 2. 59 p.
• Zhang J., Victor Li. Influece of supporting base characteristics on shrinkage-induced stresses in concrete pavements. Journal of Transportetion Engineering, 2001, Vol. 127, no. 6.
• Stott J. Test on materials for use in sliding layers under concrete road slabs. Civ. Ingrg., 1961, pp. 663-655.
• Wesevich J., Mc-Cullough B., Burns N. Stabilized subbase friction study for concrete pavements. Austin, Texas, University of Texas at Austin, 1987. 495 p.
• Wimsatt A., Mc-Cullough B., Burns N. Methods of analyzing and friction influencing frictional effects of study for subbase. Austin, Texas, University of Texas at Austin, 1987.
• Rozycki D., Rasmussen R. Assessment of slab-base interaction in PCC airfield pavements. Innovations for The Next Century, ASCE, New York, 1998, pp. 403-422.
• Tur V.V. Jeksperimental'no-teoreticheskie osnovy predvaritel'nogo naprjazhenija konstrukcii pri primenenii naprjagajushhego betona [Experimental and theoretical basis of the preliminary structure stress using stressing concrete]. Brest: BPI, 1998. 246 p.