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.