| 摘要 |
FIELD: transportation. ^ SUBSTANCE: device for erection of bridges comprises strings and ""-shaped self-propelled erection bridge installed on strings and covering bridge span. Strings are pulled through guide pipes installed on sides of all bridge supports, at that some ends of strings are fixed on coastal supports, other ones - by means of tightening mechanisms on opposite coastal supports for provision of possibility of self-propelled displacement of erection bridge with self-propelled load trolley and grips on strings above all bridge spans in process of span assembly per single stage. ^ EFFECT: increased efficiency of labor and reduced cost of bridge-construction works during erection of multi-span bridges of beam systems. ^ 2 dwg |
