Analysis of ways to combine concrete and steel in steel-concrete composite bridges
The article presents features of different ways of combining reinforced concrete slabs and steel main beams in steel-concrete composite span structures of bridges. On the basis of domestic and foreign experience of construction bridges is analyzed advantages and disadvantages used in steel-concrete composite bridges rigid and flexible abutments, a flexible inclined anchors, joins on high-strength bolts and bolt-adhesive joining, including developments of recent years. The analysis of existing methods of calculation of the basic ways of combining, presented in the normative literature, the results of which indicate the need for additional experimental and theoretical studies of the flexible and rigid abutments at various operating conditions bridge spans. Special consideration should be given to the behavior of abutments under dynamic loads and improvement of their calculation of endurance.