Double-layer bottom basket and double-layer knotting construction device and method for arched beam combined type continuous rigid frame bridge

Abstract

The invention discloses a double-layer bottom basket and double-layer knotting construction device and method for an arched beam combined type continuous rigid frame bridge. The double-layer bottom basket and double-layer knotting construction device comprises a double-layer bottom formwork hanging basket system, an upper chord temporary tower frame fastening cable system and a lower chord fastening cable system; the double-layer bottom formwork hanging basket system comprises a double-layer bottom formwork arranged on an upper chord box beam, and a hanging basket structure capable of walking forwards horizontally along the top face of the upper chord box beam; the upper chord temporary tower frame fastening cable system comprises a temporary tower frame structure arranged on the top face of a pier top beam section, and fastening cable ducts located on the temporary tower frame structure and a cantilever cast-in-place upper chord box beam section, and fastening cables penetrating through the fastening cable ducts; the lower chord fastening cable system comprises fastening cable ducts arranged on a battened main pier and a cantilever cast-in-place lower chord box beam section and fastening cables penetrating through the fastening cable ducts. By adoption of the double-layer bottom basket and double-layer knotting construction device and method, cantilever construction in the arched beam frame area of the arched beam combined type concrete continuous rigid frame bridge is achieved, and meanwhile, the problems that construction of an upper box beam through a full support is extremely difficult and the safety risk is high are solved.

Description

technical field [0001] The invention relates to a cantilever pouring construction technology of a lower chord arched box girder and an upper chord box girder in the arch beam combined frame area of ​​a high pier and large span arch beam combined prestressed concrete continuous rigid frame bridge, in particular to an arch beam combined type The invention discloses a construction device and method for a double-layer bottom basket double-layer buckle-hung construction of a prestressed concrete continuous rigid frame bridge. Background technique [0002] The prestressed concrete continuous rigid frame bridge has the advantages of large spanning capacity, reasonable stress, smooth driving, convenient construction, and low maintenance cost. It has strong adaptability to mountainous areas with high mountains and steep slopes and narrow construction sites. , The main bridge type of the mid-span girder bridge, among the continuous rigid frame bridges that have been built in my country...

AI Technical Summary

Problems solved by technology

At the same time, the construction work space in the hollow area of ​​the arch-beam composite frame is small, and the construction of the upper string box girder using full-height brackets is more difficult and has higher safety risks

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