Construction method for prefabricated pipe gallery joint water proofing

Abstract

The invention particularly discloses a construction method for prefabricated pipe gallery joint water proofing. The construction method is characterized by comprising the steps that a groove is reserved at the joint of a prefabricated pipe gallery main body structure when a waterproof protection layer is constructed, an uninflated strip-shaped inflating bag is pre-laid at the bottom of the reserved groove, and self-adhering rubber waterstop is pre-laid on the strip-shaped inflating bag; after a prefabricated pipe gallery is installed, the strip-shaped inflating bag is inflated, and the self-adhering rubber waterstop is firmly adhered to the joint of the prefabricated pipe gallery main body structure through air pressure; the inflated air bag is deflated and then detached; and a grouting pipe is laid on one side of the reserved groove, an exhaust pipe is arranged on the other side of the reserved groove, a high-performance waterproof roll is arranged on the side wall to be adhered firmly from the outer side of a bottom plate of the prefabricated pipe gallery in a reverse wrapping mode, a closed space is formed under the bottom plate, and then waterproof mortar is injected to fill the gap of the bottom plate. Therefore, the condition that underground water permeates into the pipe gallery through the inserting joint along the gap can be avoided, and the waterproof quality is improved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a construction method for joint waterproofing of a prefabricated pipe gallery. Background technique [0002] As an underground long-distance linear building, the comprehensive pipe gallery is a worldwide problem how to effectively prevent groundwater infiltration. The integrated pipe gallery is generally waterproofed by pasting waterproof membranes on the outside, self-waterproofing of impermeable concrete, and coating waterproof paint on the inside. The external waterproofing of the bottom plate of the comprehensive pipe gallery is usually pre-laid with a layer of waterproof membrane, and the waterproof protective layer is constructed with fine stone concrete, and then the main structure is constructed on the waterproof protective layer. This method is more applicable in the construction of cast-in-place comprehensive pipe gallery, but in the construction of prefabricated p...

AI Technical Summary

Problems solved by technology

This method is more applicable in the construction of cast-in-place comprehensive pipe gallery, but in the construction of prefabricated pipe gallery, due to the gap between the bottom surface of the prefabricated pipe gallery and the waterproof protective layer, the leakage of any waterproof coiled material can cause groundwater in the Free flow between the entire bottom plate and every joint, greatly improving the chance of water seepage in the joints of the prefabricated pipe gallery

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