The thermo-stressed state in massive concrete structures
A.V. Bushmanova, N.V. Videnkov, K.V. Semenov, Yu.G.
Barabanshchikov, A.V. Dernakova, V.K. Korovina, Peter the Great
St. Petersburg Polytechnic University, St. Petersburg, Russia
examines the justification for using one-dimensional structural models
in the analysis of the thermo-stressed state in massive concrete and
reinforced concrete structures during the building period. The paper
presents calculation results for the thermo-stressed state in massive
foundation slabs with different planform dimension ratios. Special
attention is paid to presence/absence of thermal insulation on the
sides of the slab during the mixture pouring process. Generally,
one-dimensional structural model is suitable in cases when ratio h/l
< 0.17, h stands for the minimal plane dimension in a construction
such as slab. The research indicates the existence of zones near the
sides of slabs, where values of the tensile stress exceed the values
that were obtained with use of one-dimensional structural model. This
excess may account for 9.5 %.
building period; massive concrete and reinforced concrete structures;
cement setting temperature; thermal stressed state; thermal cracking
resistance; one-dimensional structural model
Read the whole article in pdf
(Bushmanova A.V., Videnkov N.V, Semenov K.V., Barabanshchikov
Yu.G., Dernakova A.V., Korovina V.K. The thermo-stressed state in
massive concrete structures. Magazine of Civil Engineering. 2017. No.
3. Pp. 51–60.