The research of tangential stresses in the support zone of the steel beam, prestressed by the wall stretching

The technique of definition of shift forces on the contact "wail-band” at a stage of preliminary tension of beams by the wall stretching is given in the article. The equations of the total shifting effort in the weld accumulated on the rod length and maximum tangential force at the beam ends are worked out. The article contains a method of determination of tangent tension at a stage tension of a steel beam. The equations of tangent tension on the stage of prestressing steel beam are worked out. The equations of shear stresses in prestressed steel beam at work of external load are also given. The size of the maximum cross force for an I-beam with preliminary tension from durability condition on a shear is determined. The influence of preliminary tension on the size of the maximum cross force operating in the support zone of the steel beam of l-shaped cross-section during the work on external loading is defined.