A prefabricated component with a bottom-cast cavity and a connecting structure thereof

CN224692968UActive Publication Date: 2026-08-28BEIJING HOUSING INDUSTRIALIZATION GRP CO LTD
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Patent Information

Application Number
CN202521326249.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-26
Publication Date
2026-08-28
Estimated Expiration
2035-06-26

AI Technical Summary

Technical Problem

[0003]但是，该结构需要从预制构件顶部进行浇筑，延长了混凝土的浇筑路径，降低了施工效率

Benefits of technology

[0014]本实用新型提供的底部浇筑空腔的预制构件及其连接结构，在预制构件主体的底部构造现浇空腔，且在底部表面靠近现浇空腔的上方区域构造出混凝土浇筑孔，混凝土浇筑孔从构件主体的立面导通到现浇空腔，这样就可以从该混凝土浇筑孔直接浇筑混凝土，而不用从顶部浇筑，缩短了浇筑路径，提升了施工效率，特别适用于底部小型空腔的浇筑。而且浇筑孔位于构件主体的里面，便于施工人员直接观察混凝土是否浇筑完成，浇筑是否密实。

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Abstract

The utility model discloses a prefabricated component of bottom pouring cavity and connecting structure thereof, including component main part, the bottom structure of component main part has cast-in-place cavity, the surface of component main part constructs concrete pouring hole in the top structure of being close to cast-in-place cavity, concrete pouring hole is downwardly conducted along the arc path from the surface of component main part to the inside of component main part, until with the top communication of cast-in-place cavity.
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Claims

1. A precast component with a bottom-cast cavity, characterized in that, The component includes a main body, the bottom of which has a cast-in-place cavity; a concrete pouring hole is formed on the surface of the main body above the cast-in-place cavity, the concrete pouring hole extending downwards from the surface of the main body along an arc-shaped path to the interior of the main body until it connects with the top of the cast-in-place cavity.

2. The precast component with a bottom-cast cavity according to claim 1, characterized in that, The cast-in-place cavity has steel reinforcement grooves on both the front and rear sides of the main body of the component; the main body of the component has vertical steel reinforcement inside, and the bottom of the vertical steel reinforcement is located in the steel reinforcement groove.

3. The precast component with a bottom-cast cavity according to claim 1, characterized in that, Multiple cast-in-place cavities are arranged at intervals along the length of the main body of the component, and each cast-in-place cavity is connected to a set of concrete pouring holes.

4. The precast component with a bottom-cast cavity according to claim 1, characterized in that, The main body of the component includes a straight component body, an L-shaped component body, or a T-shaped component body.

5. The precast component with a bottom-cast cavity according to claim 1, characterized in that, The outer side of the main body of the component also has an insulation layer and an outer page.

6. The precast component with a bottom-cast cavity according to claim 2, characterized in that, The cast-in-place cavity is longer on one side and shorter on the other side of the reinforcing bar groove, and the concrete pouring hole is directed to the area above the longer side of the cast-in-place cavity.

7. A connection structure for upper and lower prefabricated components, characterized in that, It includes an upper precast component and a lower precast component, both of which are precast components with a bottom cast-in-place cavity as described in any one of claims 1-6; the vertical reinforcing bars of the lower precast component extend from the top of the lower precast component and into the cast-in-place cavity at the bottom of the upper precast component.