Prefabricated double-skin wall structure of prefabricated superimposed assembly type pipe gallery and seam structure

Abstract

The invention relates to a prefabricated double-skin wall structure of a prefabricated superimposed assembly type pipe gallery and a seam structure. The double-skin wall comprises a prefabricated inner plate and a prefabricated outer plate; the prefabricated inner plate and the prefabricated outer plate are arranged in a translation and staggered mode in the length direction of a pipe gallery section; the structure of the overlapped part of the prefabricated inner plate and the prefabricated outer plate is the same as that of a conventional double-skin wall, namely, the prefabricated inner plate and the prefabricated outer plate are connected through main ribs and opposite-pull truss ribs; and the lower parts of main reinforcements of the staggered parts of the prefabricated inner plate and the prefabricated outer plate are cut off, and lap joints are reserved and are used for corresponding binding and lap joint when double-skin walls of adjacent pipe gallery sections are spliced end to end. The double-skin wall structure is good in impermeability, bending resistance, tensile strength and crack resistance, can be prefabricated on a large scale, and is high in on-site assembly construction efficiency.

Description

technical field [0001] The invention relates to the field of prefabricated superimposed assembled pipe gallery, in particular to a prefabricated double-skin wall structure and joint joint structure of the prefabricated superposed assembled pipe gallery. Background technique [0002] The urban underground comprehensive pipe gallery refers to an infrastructure building built underground in the city, mainly used to accommodate municipal pipelines such as water supply and drainage pipelines, heat pipelines, gas pipelines, power cables, and communication cables. Compared with the traditional direct burial of pipelines, the urban underground comprehensive pipeline gallery has many advantages, including: unified management of all pipelines, convenient maintenance; solving the problems of "road zipper" and "air spider web", reducing the impact on traffic, and beautifying the city appearance environment; optimize the layout of underground pipelines, rationally develop underground spa...

AI Technical Summary

Problems solved by technology

[0004] The joints only rely on the middle cast-in-place concrete layer to transmit the force, and the joint filling material between the precast slabs does not participate in the force transfer between the pipe sections; the steel bars along the length of the pipe gallery in the precast slab are cut off here, resulting in the cast-in-place concrete layer And its steel cage is not enough to make up for the loss of mechanical performance caused by the truncation of the inner and outer panels at the seams, and the seams also cause changes in the stress transmission path and local stress concentration, so that the seams become bending, tensile, and anti-corrosion. The weak links of cracking and impermeability are prone to cracking, deformation and leakage

At the same time, based on the need for arranging reinforcement cages, the double-skinned wall has no truss reinforcement near the joint, which makes the double-skinned wall near the joint easy to peel off from the cast-in-place layer, further deteriorating the mechanical and anti-seepage properties around the joint section

[0005] In summary, the anti-crack and anti-seepage performance of the jointed sections of double-skin walls is weaker than that of non-jointed sections, and the large number of jointed sections will leave more hidden dangers of leakage and damage

Underground comprehensive pipe gallery has high fraud rate, long design service life, and high operational reliability requirements. Frequent abnormal leakage will cause heavy losses to operation and maintenance

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