multi-span construction

The paper presents only some problems of design and constraction of the bridge. The aim of the experimental study is to establish the behavior peculiarities of multi-span structure under the external static loading. The development of structure calculation methods for multispan reinforced concrete while taking into count the stages of its work is necessary to increase the effectiveness and widespread use of it. Improvement of structure calculation methods is an important problem.

The paper presents only some problems of design and constraction of the bridge. The active provides the results of the research out composite muilti-span prestressed reinforced concrete beam for time building bridges. Comparison of experimental and theoretical sizes. Values of crack resisting, deformation property and strength index are received, work stages and studied slabe collapse odes are also described. The characteristic stage of the tensely deformed state are selected. State and practic making of multi-span iron concrete constractions by high productive modern technology.