Consideration of Temperature Actions when Designing Bearing Structures

The necessity of mandatory consideration of temperature influences caused by operational temperature differences and the action of solar radiation is justified when when assigning design solutions to load-bearing structures. For this purpose, cases are considered when operating temperature differences lead to the appearance of significant stresses and deformations in load-bearing structures. In total, four typical examples from practice are considered. In the first example, the occurrence of temperature cracks in the bearing reinforced concrete wall of a building as a result of solar overheating of its inner surface, extending into into the under – roof space of the translucent dome; in the second, the formation of cracks in the bottom of a concrete basin of a pool located inside a room with a room temperature of +20оС when filling the bowl with cold tap water with a temperature of +4оС; in the third – the destruction of the junction of the pile with the end beam in buildings with an open underground built under the conditions of the Far North; in the fourth, one of the possible reasons for the destruction of the dome roof of the concave concrete roof shell of the Basmanny Market. On the basis of the considered examples, the author justifies the need to perform thermo-physical calculations when designing not only enclosing, but also bearing structures of buildings. When designing objects, it is necessary not only to focus on regulatory requirements, but also on the features of joint work of load-bearing and enclosing structures of buildings. Such features are difficult to formalize. In order to avoid these problems in practice, it is necessary to increase the role of building physics when training civil engineers.

A.A. PLOTNIKOV, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

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