Prefabricated sewage intercepting box culvert and construction method thereof

Abstract

The invention relates to a prefabricated sewage intercepting box culvert and a construction method thereof. The prefabricated sewage intercepting box culvert comprises prefabricated sewage intercepting box culvert sections, a cast-in-place cushion layer, cast-in-place bearing platforms and a cast-in-place bottom plate, wherein each sewage intercepting box culvert section comprises a top plate andside plates which form an n shape together; hoisting rings are arranged on the sewage intercepting box culvert sections; the bearing platforms and the bottom plate are positioned on the cushion layer;the bottom plate is sandwiched between the bearing platforms and is integrally cast with the bearing platforms; grooves are arranged on the top surfaces of the bearing platforms; the bottom ends of the side plates are inserted into and supported in the grooves; the grooves are filled with slight expansion fine aggregate concrete; the adjacent sewage intercepting box culvert sections are connectedby the end surfaces of the top plates and the side plates; a water-swellable waterstop strip is attached to the connection part; and the connection part is filled with the slight expansion fine aggregate concrete. The prefabricated sewage intercepting box culvert is simple in structure, high in construction efficiency, not difficult in casting and good in sealing effect, and can avoid the problemof water leakage.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to an assembled sewage intercepting box culvert and a construction method thereof. Background technique [0002] Sewage interception box culvert is a common drainage structure in sponge city at present, it is mainly used for sewage discharge, its construction sequence is generally to carry out concrete structure construction after foundation pit excavation, there are two problems in this cast-in-place structure, one is foundation pit Exposure to the outside for a long time will cause certain hidden dangers to construction safety. Second, the construction time and frequency are too long, and the quality and quantity cannot be controlled. The box culvert structure is prone to water seepage and the overall stability is not high. When the top soil is too thick, it may It has an impact on the sewage intercepting box culvert. [0003] In order to improve construction effi...

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Problems solved by technology

[0002] Sewage interception box culvert is a common drainage structure in sponge city at present, it is mainly used for sewage discharge, its construction sequence is generally to carry out concrete structure construction after foundation pit excavation, there are two problems in this cast-in-place structure, one is foundation pit Exposure to the outside for a long time will cause certain hidden dangers to construction safety. Second, the construction time and frequency are too long, and the quality and quantity cannot be controlled. The box culvert structure is prone to water seepage and the overall stability is not high. When the top soil is too thick, it may Impact on sewage interception box culvert

[0003] In order to improve construction efficiency, reduce construction times and time, and avoid long-term exposure of foundation pits, people adopt the method of prefabrication and then assembly, such as patent CN201710421978.9 "a prefabricated box culvert structure with glass fiber reinforcement", CN201510194045. 1 "A prefabricated jacking box culvert with steel edge angle", CN201620940549.3 "Prefabricated concrete box culvert", are all prefabricated sewage intercepting box culvert segments, and then splicing each segment on site, but these The methods all have the following problems: 1) the sewage intercepting box culvert is formed by integrally pouring the top plate, side plate and bottom plate in sections. This fully enclosed structure, especially the special shape of butt joints at both ends, is very difficult to pour; 2 ) When the adjacent sewage intercepting box culverts are docked in sections, it is easy for people to observe and judge the connection between the top plate and the side plates, but it is not easy to observe and judge the connection between the bottom plates. The contact surface between the bottom plates is difficult to seal. If there is a problem with the seal between the bottom plates, the sewage will seep between the adjacent bottom plates during use

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