doi: 10.18720/MCE.79.5
Thermal cracking resistance in massive steelreinforced concrete structures
A.V. Bushmanova, D.K. Kharchenko, K.S. Semenov, Yu.G. Barabanshchikov,
V.K. Korovina, A.V. Dernakova,
Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia
The work is
dedicated to research of the thermal crack resistance in massive
steelreinforced concrete structures in construction period. The
article examines the results of the analysis of the thermal stress
state, which occurs in massive steelreinforced concrete column. The
steel part of the column is represented by a system of cross UCbeams.
The study was conducted with using analytical models, which include the
factor of steel profiles availability in comparison with simplified
methods. Authors established that calculations of thermal
stresses state of massive steelreinforced concrete structures in
construction period should be carried out with using analytical models,
which assumed accounting of the availability steel profiles in
crosssection of the column. Structure heating and tension stresses are
significantly lower in this case. With all characteristics averaged,
maximum tension stresses are less than real by 50.9% and thickness of
the thermal insulation is less than required 5 times. Was defined, that
calculations of thermal crack resistance in construction period of
steelreinforced concrete structures by simplified analytical model
(which assume absence of steel profiles in crosssection of the column)
lead to significant errors.
Keywords:
steelreinforced concrete; stressed state; cracking resistance; analytic model; construction period
Read the whole article in pdf
(Bushmanova A.V., Kharchenko D.K., Semenov K.S.,
Barabanshchikov Yu.G., Korovina V.K., Dernakova A.V. Thermal cracking
resistance in massive steelreinforced concrete structures. Magazine of
Civil Engineering. 2018. No. 3. Pp. 45–53. doi:
10.18720/MCE.79.5.).
