Construction technology of fully prefabricated composite underground comprehensive pipe gallery

Abstract

A construction and manufacturing process for a fully prefabricated laminated assembly underground comprehensive pipe gallery, the bottom plate is a prefabricated laminated floor, the side walls or side walls and the middle wall are prefabricated sandwich laminated walls, the top plate is a prefabricated laminated plate, and the bottom plate , side wall or side wall, middle wall and roof are connected by cast-in-place to form a whole underground comprehensive pipe gallery. The present invention prefabricates a part in the factory and superimposes the cast-in-place part on site, fully utilizes the advantages of both factory prefabrication and on-site casting, overcomes the shortcomings and deficiencies of both, especially overcomes the low production efficiency and small transportation volume of traditional prefabricated pipe racks Disadvantages: Realize no template construction on site, environmental protection, material saving, high quality, high efficiency, and excellent waterproof performance.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering, and in particular relates to a construction process for a fully prefabricated and assembled underground comprehensive pipe gallery. Background technique [0002] The Guiding Opinions of the General Office of the State Council on Promoting the Construction of Urban Underground Comprehensive Pipe Gallery (Guobanfa [2015] No. 61) was announced on August 10, 2015. The goal is to build a number of internationally advanced underground comprehensive pipeline corridors and put them into operation by 2020. The problem of "road zippers" caused by repeated excavation of the ground has been significantly improved, the safety level of pipelines and the ability to prevent and resist disasters have been significantly improved, and the main Street spider web-like overhead lines, the city's ground landscape has improved significantly. The construction of underground comprehensive pipe corridors in ...

AI Technical Summary

Problems solved by technology

[0003] The site excavation of the cast-in-place underground pipe gallery is wider to ensure sufficient space for construction operations on both sides, so the excavation volume is large and the backfill volume is also large; since all the work is completed on site, the side walls and roof Formwork is required, and the roof formwork must be removed after the concrete has fully reached its strength. The construction period is long and the labor demand is large. All raw materials are shipped to the site in bulk, which pollutes the environment. Concrete is poured on site and requires high manual vibration. , if the vibration is not solid, there will be hidden dangers of water leakage, and the on-site concrete curing conditions are poor, the possibility of micro-cracks in the concrete is high, and water will seep through the micro-cracks in the later stage

[0004] The traditional prefabricated pipe gallery is formed by splicing sections of prefabricated pipe galleries on site. There are many seams, and the waterproof requirements at the seams are high and difficult, especially the transportation and hoisting are difficult, requiring large transport vehicles and large hoisting equipment. , the construction cost is high; because the prefabricated pipe gallery of each section is prefabricated in the whole factory, the mold is complicated, it cannot be produced in an assembly line, the production efficiency is low, and the prefabricated pipe gallery takes up a lot of space, so the transportation volume per vehicle is small, which affects the construction speed

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