Implementation method of prefabricated under-rail foundation for trams in soft soil areas

Abstract

The invention discloses an implementing method of a fabricated under-rail foundation of a tramcar in a soft soil area. The implementing method comprises the steps that three parts of components of PHCpile foundations, reinforced concrete cross beams and reinforced concrete slab structures are prefabricated in a factory; steel bars are reserved in the position, corresponding to the pile foundations, of prefabricated roadbed beams, after under-beam steel bars and steel plates at the tails of the under-beam steel bars are placed in prefabricated pile hollow parts, shearing pin son-openings are reserved in the prefabricated reinforced concrete cross beams, during fabricating, shearing pin mother-openings in the prefabricated reinforced concrete slab structures and the shearing pin son-openings in the prefabricated reinforced concrete cross beams are subjected to socket welding to form a common beam-slab force-transferring structure; and different slab blocks of prefabricated reinforced concrete slabs are lapped on the cross beams. The implementing method has the beneficial effects that prefabricated components are adopted, the manufacturing precision is high, the quality is ensured, meanwhile, the on-site installation efficiency and installation precision are improved, on-site labor force can be saved, the construction period is shortened, and the integrity of the roadbed structure is improved; and an under-rail foundation structure of the tramcar can be completed quickly, safely, and efficiently in an environmentally friendly mode.

Description

technical field [0001] The invention relates to the technical field of tram engineering construction, in particular to an implementation method of a trolley assembled under-rail foundation in soft soil areas. Background technique [0002] The under-track foundation of trams in soft soil areas usually adopts reinforced concrete structures in the form of sheet piles. According to the construction method, they can be divided into three types: cast-in-place structures, prefabricated structures and prefabricated integral structures. At present, most of the streetcar road base pile structures adopt the combination of prefabricated piles and cast-in-place subgrade beams and slabs. The prefabricated piles are reserved for inserting ribs, and the subgrade beam-slab structure is integrated with cast-in-place and prefabricated piles to form a whole in the later stage. This construction method Since the structure of the cast-in-place part needs to erect formwork, tie steel bars and pour...

AI Technical Summary

Problems solved by technology

[0004] Existing tramway under-rail construction methods and defects: At present, the under-rail foundation structure of trams mostly adopts the combination of prefabricated piles and cast-in-place subgrade beams and slabs. The cast-in-place and prefabricated piles are connected as a whole. Since the structure of the cast-in-place part needs to set up formwork, tie steel bars and pour concrete on site, the construction method requires a lot of labor and a long construction period, and the mechanical properties of the structure are greatly affected by the quality of the site construction.

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