Structure capable of realizing large-span V-shaped pier continuous rigid frame bridge and construction process thereof

Abstract

The invention discloses a construction process, a construction foundation and a pounding bottom bearing platform for realizing a large-span V-shaped pier continuous rigid frame bridge structure. A temporary sliding support is arranged. A V-shaped pier member is casted. A temporary pounding bottom fixed limit device is set. A beam body is casted. The temporary pounding bottom fixed limit device is released when a midspan closure steel cable is tensioned, so that a horizontal force of the closure steel cable is effectively applied to a midspan girder section. An opposite vertex device is arranged in the pounding bottom bearing platform to perform opposite vertex auxiliary to the pounding bottom, so that the pounding bottom generates horizontal displacement inwardly. Pressure stress storage necessary for a lower edge of the midspan girder section is provided. A connection reinforcing steel bar of the pounding bottom bearing platform and V-shaped pier member is welded. The V-shaped pier and the pounding bottom bearing platform are fixedly connected so as to make the temporary sliding support to be a pounding bottom permanent concretion state, thus the system transition of a beam body continuous transferring double cantilever rigid frame is realized. The whole bridge system transition is realized during side span closure. In the invention, the system transformation from the continuous beam transferring rigid frame in the stage of beam body closure, the structure is simple and convenient for construction, the harmful secondary interior force, of the V-shaped pier continuous rigid frame bridge is realized, the structure is simple and the construction is convenient.

Description

technical field [0001] The invention relates to the technical field of transportation, in particular to a structure and a construction process for realizing a continuous rigid frame bridge with V-shaped piers with a large span. Background technique [0002] Continuous rigid frame bridge with V-shaped piers is a hybrid structural system composed of multi-span continuous beams and rigid frames, which has the mechanical characteristics of both rigid frames and continuous beams. Since the oblique legs of the V-shaped piers reduce the span of the main beam to a certain extent, the peak values ​​of the maximum positive and negative bending moments of the main beam are significantly reduced, so that the building height of the beam can be significantly reduced, and the entire hybrid structure system has structural rigidity. Large, good overall advantages. [0003] However, if figure 1 As shown, when the span of a continuous rigid frame bridge with V-shaped piers is large, since th...

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Problems solved by technology

However, the V-shaped pier continuous rigid frame bridge with hanging holes not only adds a set of hanging hole construction facilities during construction, but also increases the expansion joints in the two main spans, which affects the structural integrity of the V-shaped pier continuous rigid frame bridge. , shock resistance are unfavorable, driving comfort is also reduced

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