Cantilever pouring arching control method for arranging buckle rope steering device on large-span main arch stand column

Abstract

The invention relates to the field of arch bridge construction, and particularly relates to a large-span arch bridge cantilever pouring arching control method. The method comprises the steps of firstly, constructing a junction pier, and arranging a plurality of buckle cable anchoring points at different positions on the junction pier according to stress requirements, wherein each buckle cable anchoring point is connected with a buckle cable; constructing arch feet at the left end and the right end of the arch bridge, then sequentially casting each main arch section in a cantilever mode from arch feet at the left end and the right end of the arch bridge, constructing main arch stand columns on one formed main arch section located at the left end of the arch bridge and one formed main arch section located at the right end of the arch bridge respectively in the construction process, arranging buckling towers at the top of the stand columns, and arranging a plurality of steering saddles onthe buckling towers; and anchoring the buckle cable at the buckle cable anchoring point on the junction pier through the steering saddle on the buckling tower, and continuing cantilever pouring of the main arch section till closure. The stability of the buckling tower in the construction process is guaranteed, the construction precision of the arch ring is also guaranteed, and the light-weight trend of the large-span arch bridge construction can be facilitated.

Description

technical field [0001] The invention relates to the field of arch bridge construction, in particular to an arch control method for cantilever pouring of a large-span arch bridge. Background technique [0002] The cantilever pouring method is to set up the operation platform on both sides of the bridge, set up the cable-stayed buckle system, use the temporary cable-stayed buckle cable to buckle the poured arch ring segment, and then anchor it to the abutment or anchorage through the anchor cable, and then use The mobile hanging basket is a construction method in which the concrete of the arch ring is poured symmetrically section by section from the arch feet on both sides of the bank until the arch top is closed. In the cantilever pouring construction using the cable-stayed buckle-hanging system, the stress safety of the arch ribs during construction, the rationality of the internal force distribution after arching, and the Rib linetype accuracy. [0003] Such as Figure 1-...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to: aim at the problem that the buckle tower is arranged on the top of the junction pier in the prior art, resulting in many anchor points on the buckle tower column, large force on the buckle cable, large amount of use, and easy to produce large deformation. A long-span arch bridge cantilever pouring arch control method, which rationalizes the control distribution of buckle cables, reduces the stress on buckle towers, and improves construction safety

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