Combined integral assembly superposed box culvert and construction method

Abstract

The invention provides a combined integral assembly superposed box culvert and a construction method. An existing integral prefabricated box culvert is high in weight, the model of a site crane is large, the requirement for hardening conditions of a pavement at the crane position is high, box culverts are connected by adopting a dry method, and the requirement for the connection accuracy is high.The combined integral assembly superposed box culvert is composed of an annular inner wall (1), a C-shaped inner wall (2) and a supporting outer wall (3), the annular inner wall, the C-shaped inner wall and the supporting outer wall and all prefabricated concrete layers, a steel reinforcement framework is a box culvert steel reinforcement framework, the box culvert steel reinforcement framework isa double-layer double-way steel reinforcement integral framework composed of a box culvert top plate, an internal wall, an external wall and a bottom plate, the annular inner wall is connected with the supporting outer wall through lattice rebars (4), the C-shaped inner wall is connected with the supporting outer wall through the lattice rebars (4) as well, and cast-in-place concrete (5) is poured into the superposed part of cavities, the top plate and the bottom plate, wherein the the cavities are formed between the annular inner wall and the C-shaped inner wall, the annular inner wall and the supporting outer wall as well between the C-shaped inner wall and the supporting outer wall. The utility model is applied to the combined integral assembly superposed box culvert.

Description

Technical field: [0001] The invention relates to a combined integrally assembled stacked box culvert and a construction method. Background technique: [0002] The existing integrated box culvert has complicated molds, high mold costs, and large prefabricated components, which makes it difficult to transport the finished product. The thickness of each side of the integral box culvert component is large, the concrete curing cycle is long, the template recycling rate is low, and the mold amortization is large. The overall prefabricated box culvert is heavy. Only one pipe section with a width of 3 meters, a height of 3 meters and a length of 2 meters weighs more than 20 tons. The transportation vehicles and cranes on site have large models, and the road conditions and the location of the cranes require high road hardening conditions. . The connection between the box culverts adopts dry connection, which requires high connection accuracy and complex technology. At present, pre-stre...

AI Technical Summary

Problems solved by technology

High construction cost and difficult quality control

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