METHOD AND DEVICE FOR INCREMENTAL LAUNCHING OF CONCRETE BRIDGES OUTSIDE OF THEORETICAL ELEVATION LINE

摘要

Method and device for incremental launching of concrete bridges outside theoretical line solves the above referenced technical problem by new method of providing for vertical alignment of theoretical elevation line using temporary intermediate concrete structure, for purposes of this application known also as concrete stand, According to the method for achieving arbitrary alignment of the bridge structure (1) (usually box cross section) with incremental launching technology one foresees manufacturing of concrete stand 3. The concrete stand 3 is in its essence the stand under webs (vertical walls) 2 of bridge structure 1 of variable thickness, or height. The bridge construction 1 has usually two webs 2 therefore two concrete stands 3 are necessary. The concrete stands 3 are of approximately equal width as webs 2 and are continuous along whole length of the bridge. The third dimension, i.e. height or thickness (d=f(x)) of said concrete stand 3 has variable value in such a way that in its lower part corresponds to theoretical geometrical conditions for launching, and in its upper part corresponds to arbitrary designed alignment according to bridge construction requirements.