Kartopoltsev V.M.

UDC 624.21.012.45

VLADIMIR M. KARTOPOLTSEV, DSc, Professor,

kaf_most@mail.ru

ALEKSANDR G. BOROVIKOV, PhD, A/Professor,

diamos@mail.ru

ANDREI V. KARTOPOLTSEV, PhD, A/Professor,

kaf_most@mail.ru

Tomsk State University of Architecture and Building,

2, Solyanaya Sq., 634003, Tomsk, Russia

RESIDUAL LIFE OF METAL BRIDGE STRUCTURES ESTIMATED BY CRACK FORMATION

The paper deals with the residual life of metal bridges estimated on the analysis of stresses and stress-strain state during crack propagation as well as the stress intensity and crack resistance factors under static, dynamic and cyclic loading and stress-corrosion fracture. The parameter dependencies are suggested for the stress-strain state of the bridge members at stages of crack birth and propagation. For the first time, the regularities of crack propagation are ascertained depending on the shape of the structural element and its limit state.

Keywords: metal structure; bridge span; stress-strain state, crack resistance.

References

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