Semi-reverse construction method for combining two walls into one of combined prefabricated pipe barrels of underground comprehensive pipe gallery

Abstract

The invention discloses a semi-reverse construction method for combining two walls into one of combined prefabricated pipe barrels of an underground comprehensive pipe gallery. In the construction ofthe urban underground comprehensive pipe gallery, cement mixed with soil is implanted into prefabricated reinforced concrete I-shaped piles with pile bodies provided with embedded parts, and the prefabricated reinforced concrete I-shaped piles are used as an enclosure pile wall in the excavation process of a pipe gallery foundation pit; and the I-shaped piles and a pipe gallery outer lining wall are connected through the pile body embedded parts or pile body main ribs, and are subjected to cast-in-place to be cast into a whole, so that the structural mode that the enclosure pile wall and the pipe gallery outer lining wall are combined into the whole is formed. According to the method, a longitudinally extending pipe gallery channel is formed by splicing the prefabricated pipe barrels on acast-in-place pipe gallery bottom plate, a prefabricated reinforced concrete horizontal plate is connected with the pipe barrels on the left side and the right side through the embedded parts at the tops of the pipe barrels, and a framework for pouring an underground pipe gallery top plate is formed; then the cast-in-place reinforced concrete is connected with an enclosure supporting beam throughthe embedded parts to form the underground pipe gallery reinforced concrete top plate with ribs; soil covering and backfilling are carried out, a roadbed pavement is built, and the civil engineering work of the underground comprehensive pipe gallery is completed; and the semi-reverse construction method for combining the two walls into one of the combined prefabricated pipe barrels of the underground comprehensive pipe gallery by slicing has the characteristics of being high in construction speed, low in construction cost, small in environmental pollution and the like, and the requirements ofenvironmental-friendly engineering construction for being low-carbon, environment-friendly and economic are met.

Description

technical field [0001] The invention relates to a new construction method of urban comprehensive underground pipe gallery, which establishes a set of cement mixing soil implanted into prefabricated reinforced concrete I-shaped enclosure pile walls, combined with the splicing of prefabricated reinforced concrete pipe tubes, and adopts the whole cast outer wall The lining wall and the bottom roof form a fast, economical and simple construction method of underground comprehensive pipe gallery with two walls in one, which fills a gap in the field of urban underground comprehensive pipe gallery construction engineering. Background technique [0002] With the in-depth development of urban construction in our country, in order to meet the perfection of various supporting facilities in the city, the laying of underground pipelines in urban construction is carried out repeatedly, and various underground pipelines are criss-crossed; this also makes the construction cost increase signif...

AI Technical Summary

Problems solved by technology

[0005] 1. The slow construction speed and long construction period will have a great impact on urban traffic and affect the appearance of the city

[0006] 2. The amount of engineering is large and the cost is high; urban underground pipe corridors are generally tens of kilometers long, with a huge amount of engineering, and if they are built in soft soil layers, pressure-bearing engineering piles and anti-floating piles should also be installed to solve their subsidence and anti-floating piles. Floating problem, so that the amount of work will be further increased

[0007] 3. A narrow and long reinforced concrete cast-in-place structure is built along the road in the underground comprehensive pipe gallery. Due to its long distance, deformation joints such as expansion and contraction are generally set at a certain distance according to regulations. The setting of these deformation joints in the underground soil layer will make the pipe The construction difficulty of the corridor structure is increased, the project cost is increased, and hidden dangers are buried for leakage in the soil layer during the later use of the pipe gallery

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