Fabricated roof-out air shaft structure

Through the assembled roof ventilation shaft structure, the coordination of positioning shaft and prefabricated hoop beams is used to solve the problems of long construction period and poor installation accuracy in the existing technology, and efficient and stable ventilation shaft installation and good waterproofing effect are achieved.

CN223358625UActive Publication Date: 2025-09-19SHAANXI JIANGHE WATER CONSERVANCY & HYDROPOWER CIVIL SURVEY DESIGN & RES CO LTD
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Patent Information

Application Number
CN202422839092.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-09-19
Estimated Expiration
2034-11-21

AI Technical Summary

Technical Problem

The existing construction method of roof ventilation shaft has problems such as long construction period, poor installation accuracy and poor stability. In particular, the formwork of cast-in-place reinforced concrete structure is difficult, and the installation of prefabricated assembled structure is complicated and the positioning accuracy is not high.

Method used

An assembled roof air shaft structure is adopted, including a positioning shaft integrally formed with the roof panel, a prefabricated shaft and prefabricated hoop beams mounted on the outside of the positioning shaft. Accurate positioning is achieved through the joint action of the positioning shaft and the prefabricated hoop beams, and annular grooves are provided on the shaft cover and the top of the prefabricated shaft to facilitate installation. The roof waterproof layer extends to the outer side of the prefabricated shaft to improve the waterproof effect.

Benefits of technology

The reliability and stability of the prefabricated well are achieved, the construction efficiency is improved, the construction process is simplified, the labor intensity is reduced, and a good waterproof effect is ensured.

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Abstract

The utility model discloses an assembly type out-of-roof air shaft structure which comprises a positioning shaft integrally formed with a roof panel, a prefabricated shaft arranged on the outer side of the positioning shaft in a sleeving mode, a prefabricated hoop beam arranged on the outer side of the prefabricated shaft in a sleeving mode and a shaft cover plate installed at the top end of the prefabricated shaft. The bottom face of the prefabricated hoistway and the bottom face of the prefabricated hoop beam are tightly attached to the top face of the roof panel, ventilation holes are formed in the prefabricated hoistway, an annular groove matched with the top end of the prefabricated hoistway is formed in the bottom face of the hoistway cover plate, and a roof pavement layer is arranged on the roof panel. And a roof waterproof layer of the roof pavement layer extends upwards from the roof panel and is paved on the outer side surface of the prefabricated hoistway. According to the utility model, the structure is simple, under the combined action of the positioning hoistway and the prefabricated hoop beam, the mounting position of the prefabricated hoistway can be accurately positioned, the mounting reliability and stability of the prefabricated hoistway can be ensured, the prefabricated assembly rate is high, the construction efficiency is greatly improved, the construction time is saved, and the waterproof effect is good.
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