ANALIZA NOŚNOŚCI PRZĘSŁA MOSTOWEGO Z PREFABRYKOWANYCH BELEK STRUNOBETONOWYCH TYPU T W ZALEŻNOŚCI OD ICH ROZSTAWU OSIOWEGO

: In professional practice, when designing bridge span with prefabricated pre–tensioned prestressed concrete T beams, catalog solutions are often used, in which beams are usually laid side by side and joined by reinforced concrete slab. The spacing of beams is rarely used because it results in lowering the ultimate limit states of the bridge structure. The paper presents a comparative analysis of limit states of individual pre–tensioned prestressed concrete T beams depending on different variants of their spacing in bridge span, using standards PN-85/S–10042 and PN–EN 1992–2:2010. It was shown that prefabricated beams can be moved axially to the optimal distance of 1.35 m. while maintaining the standard conditions of ultimate limit states. Increasing the spacing of prefabricated beams has a positive impact on the costs of the entire project, significantly lowering the global investment cost.