A rigidly connected prefabricated frame beam for prefabricated buildings
A rigid connection and prefabricated technology, used in buildings, building structures, joists, etc., can solve problems such as insufficient vertical reinforcement of grouting sleeves, prefabricated buildings that cannot be equal to cast-in-place buildings, and unrealistic grouting anchoring. , to shorten the total construction period of on-site installation, change the installation and connection process, and improve the overall quality and performance.
Active Publication Date: 2022-02-11
CHINA MCC17 GRP
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Problems solved by technology
[0002] In the existing technology, the overall quality of factory prefabricated assembly components is much higher than that of on-site cast-in-place, but the overall quality of prefabricated buildings cannot be equivalent to cast-in-place buildings
The weak link in its quality lies in the existing installation process. The current prefabricated building construction mainly has the following problems: the prefabricated column-beam joints assembled on the construction site are basically completed by on-site cast-in-place, which requires a basic maintenance period. Formwork and support systems need to reach the design strength before follow-up work can be carried out. The time and cost are the main components of the on-site installation period of the prefabricated building; The pre-embedded casing grouting and anchoring process is adopted. There are insufficient vertical reinforcement positioning and insufficient reserved length of the grouting sleeve, and the grouting anchorage is not solid. The design load requirements can only be met after the grouting material design strength is reached. More temporary support systems are needed to cooperate with the installation, which also takes up relatively high construction costs and periods; during the installation of prefabricated wall panels, the phenomenon of plugging or unqualified grouting quality is relatively common, which cannot meet the quality requirements of architectural design; Insufficient grouting occurs in the grouting operation, which cannot meet the design anchor strength requirements; the above problems are mainly caused by the connection parts installed on the prefabricated building site, resulting in poor overall quality of the prefabricated building
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Embodiment 1
[0026] from Figure 1-6 It can be seen that a rigidly connected prefabricated frame beam for prefabricated buildings in this embodiment includes a steel reinforcement plate 1 at the beam end, and the steel reinforcement plate 1 at the beam end is formed by cutting and welding steel plates, and a slot is reserved for After the quality anchor member 8 is installed, the notch is filled with high-strength concrete mortar and encapsulated, mainly to reinforce the end of the concrete prefabricated beam body 10, and to precisely position the size of the beam end, which can effectively strengthen the connection between the column and the beam. Integrity, the surface of the steel reinforcement plate 1 at the beam end is provided with a notch, and a groove-shaped steel bar connection sleeve 3 is installed inside the notch, from Figure 4 It can be seen that the groove-shaped steel bar connecting sleeve 3 is a non-standard processed part. According to the layout of the beam steel bar, it...
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The invention discloses a rigidly connected prefabricated frame beam used for an assembled building, and belongs to the technical field of assembled building construction. The invention comprises a beam-end steel reinforcing plate, a groove-shaped reinforcement connecting sleeve is installed inside the beam-end steel reinforcing plate, a transverse anchoring main reinforcement is installed inside the groove-shaped reinforcement connecting sleeve, and the beam stirrup and the transverse anchoring main reinforcement The joints are also provided with a straight-thread steel connection sleeve, the inner side of the straight-thread steel connection sleeve is installed with a longitudinal anchoring main bar, and a concrete prefabricated beam body is poured between adjacent steel reinforcement plates at the beam end. The present invention can change the current installation method of grouting anchorage and on-site pouring connection nodes between prefabricated building components, avoid quality problems caused by insufficient grouting, achieve the purpose of rapid assembly of prefabricated buildings, reduce on-site construction steps, Reduce the input of auxiliary materials, reduce construction costs, and shorten the total construction period.
Description
technical field [0001] The invention relates to the technical field of prefabricated building construction, and more specifically, relates to a rigidly connected prefabricated frame beam used for a prefabricated building. Background technique [0002] In the existing technology, the overall quality of factory prefabricated assembly components is much higher than that of on-site cast-in-place, but the overall quality of prefabricated buildings cannot be equivalent to cast-in-place buildings. The weak link in its quality lies in the existing installation process. The current prefabricated building construction mainly has the following problems: the prefabricated column-beam joints assembled on the construction site are basically completed by on-site cast-in-place, which requires a basic maintenance period. Formwork and support systems need to reach the design strength before follow-up work can be carried out. The time and cost are the main components of the on-site installatio...
Claims
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IPC IPC(8): E04C3/20E04B1/21
CPCE04C3/20E04B1/215
Inventor 张新单联好唐华李浩戚二舟
Owner CHINA MCC17 GRP