Prefabricated comprehensive pipe gallery joint waterproof connecting structure

Abstract

The invention discloses a prefabricated comprehensive pipe gallery joint waterproof connecting structure. The joint waterproof connecting structure comprises an inner sealing rubber strip groove, an outer sealing rubber strip groove, a grouting groove, a grouting hole, exhaust grooves, a prestress tensioning anchorage body and prestress tendons. For one end face of a pipe gallery, the inner edge and the outer edge of the end face are provided with an inner chamfered edge and an outer chamfered edge respectively. After two adjacent pipe galleries are spliced, the spliced portions of the two outer chamfered edges and the two inner chamfered edges are filled with mortar or sealant for smoothing, the two inner sealing rubber strip grooves and the two outer sealing rubber strip grooves are provided with water-swelling water stopping strips, and a grouting cavity formed by splicing the two grouting grooves is internally provided with an annular inflatable rubber ring or filled with concrete.According to the structure, sealing is achieved through smoothing of the inner and outer chamfered edges, sealing of the two water-swelling water stopping strips and concrete grouting of the groutingcavities, five waterproof sealing structures can be formed at the joint part of the pipe gallery from outside to inside, the waterproof and water-stopping effects are good, connection is firm, the service life is long, and the installation is convenient.

Description

technical field [0001] The invention belongs to the field of municipal construction, and more specifically relates to a waterproof connection structure for joints of a prefabricated comprehensive pipe gallery. Background technique [0002] Urban comprehensive pipe gallery (also known as "common ditch", "municipal pipe gallery", etc.) can better solve many disadvantages of urban underground infrastructure construction, and has been widely recognized in China, and its construction has begun to see scale. Its construction methods mainly adopt cast-in-place and factory prefabrication. Compared with on-site pouring, factory prefabrication has controllable quality, low comprehensive cost, wide application range, economical and environmental protection, short construction period, basically does not affect road traffic, and can be prefabricated as a whole or assembled on site according to the project volume. , with flexible and diverse forms, is the mainstream trend of future engin...

AI Technical Summary

Problems solved by technology

[0003] The prefabricated integrated pipe gallery is connected by segments to form a gallery. The joint is the weak link in the waterproofing of the prefabricated integrated pipe gallery. At present, two forms of reserved post-pouring tape or post-tensioned prestressed waterproof tape are generally used. The former prefabricated components need to be prefabricated. Retaining steel bars, tying steel bars on site, supporting formwork, pouring concrete, curing and other processes, the construction is complicated; the latter is convenient for construction, but due to the complex construction conditions and underground environment, water-stop adhesive strips are used for waterproof connections, resulting in uneven foundation at the interface During settlement, the waterstop is easily deformed, or even cracked, and it is difficult to achieve the target of one hundred years of use. At the same time, since the rubber waterstop is directly sealed at the joint during pouring, it cannot be replaced when it is damaged , difficult to maintain

Images