Prefabricated Frame With Exposed Rebar Connections
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Solution Overview
Problem
Existing building structures rely heavily on cast-in-situ concrete methods, resulting in significant on-site construction workloads and prolonged construction periods despite the use of prefabricated members.
Innovation Solution
A prefabricated frame system where all structural members, including columns, main beams, secondary beams, and floors, are prefabricated with exposed reinforcing bars, allowing for in-situ concrete casting to connect them, reducing on-site work and enabling faster construction by using prefabricated components with reserved connecting bars for efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cast-in-situ concrete method is used to connect structural members, then connection strength and reliability are improved, but on-site construction workload and construction duration increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-embedding connecting bars into the prefabricated structural members during factory production. These connecting bars are prepared in advance with proper positioning and protrusion lengths, eliminating the need for complex on-site reinforcement bar installation and concrete casting operations, thus reducing construction time while maintaining connection reliability
Solution Approach 2:
The patent extracts the connection function from the cast-in-situ concrete process by using dedicated connecting bars that protrude from prefabricated members. These connecting bars are designed to insert into corresponding cavities or recesses in adjacent members, separating the connection mechanism from the traditional concrete casting process and enabling faster assembly
2Productivity
If prefabricated members are used, then on-site construction work is reduced, but the complexity of coordinating multiple prefabricated components increases
Solution Approach 1:
The patent segments the structural members with standardized connection interfaces. Each member (beam, column, slab) is divided into functional sections with predetermined connecting bars and corresponding recesses, allowing modular assembly while reducing the complexity of coordination through standardization
Solution Approach 2:
The connecting bars serve as intermediary elements between different prefabricated members. These standardized connecting bars simplify the coordination complexity by providing a uniform connection mechanism that can be applied across different member types, reducing the need for custom connection solutions for each interface
Data Source
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AI summary
Disclosed herewith a prefabricated frame, including a column (1), a main beam (2), a secondary beam (3), and a floor (5). The main beam (2) and the secondary beam (3) are both prefabricated members, and provided with exposed reserve reinforcing bars. The floor (5) is a laminated plate having a prefabricated slab (51) at a lower portion thereof The prefabricated slab (51), the main beam (2), and the secondary beam (3) are connected together through in-situ casting concrete on respective top portions thereof The column (1) is a prefabricated column, which has exposed reserve reinforcing bars at a top thereof, and a to-be-cast structure at a bottom thereof for connection with a lower building structure, which has exposed reinforcing bars inserted into the to-be-cast structure. The connection between the column (1) and the lower building structure is achieved by casting in-situ concrete in the to-be-cast structure (12).