METHOD OF BRIDGE SPAN LAUNCHING Russian patent published in 2010 - IPC E01D21/00 

FIELD: construction.

SUBSTANCE: invention may be used in device for bridge span launching, including sliding tracks, pushing accessories and limiters of side displacement in the form of bead rigidly fixed on bridge support and having stands with fixed side supports interacting with lower belt of span with inbuilt crossbar. The novelty is the fact that stands of side displacement limiters are arranged as hollow, inside of them there is a spring and spring-loaded element, capable of limited vertical displacement and equipped with head in upper part with polished sheet bevelled at sides. Stands of side displacement limiters are arranged on bridge support bed on both sides of balance beams along with launching. Front and back fairings interacting in process of launching with polished sheet of spring-loaded element head are fixed coaxially to stands to lower belt of span in zone of inbuilt crossbar arrangement. Stands of side displacement limiters may be arranged with square section. Side supports on head of limiter stand have angular bevels in vertical plane.

EFFECT: increased operational reliability.

3 cl, 5 dwg