Connecting method for waterproof settlement joint at junction of new box culvert and old box culvert

Abstract

The invention discloses a connecting method for a waterproof settlement joint at the junction of a new box culvert and an old box culvert, the connecting method is applied to connecting an old box culvert channel with a new box culvert, and embedded steel bars are arranged in the old box culvert through chiseling; the end of the new box culvert is arranged to be of a protruding structure, newly-built reinforced concrete ring walls are arranged at the protruding position of the new box culvert and the scabbled position of the old box culvert through embedded steel bars, a settlement joint is formed between the two newly-built reinforced concrete ring walls, framework steel bars are bound between the two newly-built reinforced concrete ring walls, and a middle-buried type rubber water stop belt and a foam board of the settlement joint are arranged in the framework steel bars. A gap is reserved between the two newly-built reinforced concrete ring walls, the newly-built reinforced concrete ring walls are subjected to concrete pouring and maintenance, and the old box culvert is subjected to chiseling and rebar planting treatment, so that the newly-poured reinforced concrete ring walls and the old box culvert are firmly engaged to form a stress whole. The reinforced concrete ring wall is arranged on the periphery of the old box culvert, and the ring wall is arranged at the end of the new box culvert in a protruding mode, so that connection of the new box culvert and the old box culvert can be effectively converted into connection of the new box culverts.

Description

technical field [0001] The invention belongs to the technical field of box culverts, and in particular relates to a connection method for waterproof settlement joints at the junction of old and new box culverts. Background technique [0002] A box culvert is a reinforced concrete structure consisting of one or more closed frame rectangular sections. Box culverts consist of one or more square or rectangular sections, generally made of reinforced concrete or masonry, but reinforced concrete is widely used. When the span is less than 4m, box culverts are used. For pipe culverts, reinforced concrete box culverts are An inexpensive alternative, the piers, upper and lower slabs are all poured in unison. [0003] The construction of box culverts generally adopts cast-in-place. The bottom layer is set in the excavated trench, a layer of concrete cushion is poured, and then the processed steel bars are bound on site, and the inner and outer molds are supported. The larger box culver...

AI Technical Summary

Problems solved by technology

However, the treatment plan for the junction of the existing box culvert and the new box culvert is a key technology, but most of the current construction projects are too simple and not standardized enough, resulting in serious water leakage after the project is completed and used

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