Collection of Atlas for House Prefabricated Beams

Currently, there is no complete atlas specifically for house prefabricated beams, but reference information can be obtained from the following relevant design atlases and structural systems:

1. General Design Atlas for Prefabricated and Assembled Bridge Structures in Shanghai Although this atlas focuses on bridge engineering, it includes design specifications for prefabricated components such as prestressed concrete simply-supported small box girders and steel-concrete composite simply-supported I-beams. Its core value lies in providing standardized design methods for prefabricated beams, including key parameters such as prestressed tensioning techniques, concrete strength grades, and cross-sectional size optimization. These specifications have direct reference significance for the design of large-span prefabricated beams in building construction (such as spatial structures in factories and gymnasiums), especially the connection node details of steel-concrete composite beams, which can be transferred to the frame systems of building structures.

2. Assembled Monolithic Concrete Structural System This system systematically elaborates on the application scenarios of prefabricated composite beams in building construction, covering three major structural types:

• External Wall Panel System: As a horizontal component supporting external wall panels, prefabricated beams require special attention to reliable connections with vertical components to avoid local stress concentration at the beam ends due to the self-weight of the wall panels.
• Prefabricated Frame System: The node connection between prefabricated beams and columns is crucial. The atlas provides detailed construction requirements for dry connections (bolt connections) and wet connections (post-poured concrete) to ensure structural integrity.
• Prefabricated Shear Wall System: Prefabricated beams usually serve as load-transferring components for floor loads and need to form effective anchoring with shear walls. The atlas provides key design parameters such as the anchorage length of beam-end reinforcement and the stirrup densification zone.

3. Reference to Prefabricated Concrete Composite Beam Products Taking the prefabricated concrete composite beams provided by Yatai Building Materials Mall as an example, their design features include:

• Structural Stability: By combining the prefabricated base plate with the cast-in-place layer, the beam's flexural stiffness is improved, reducing deformation.
• Easy Installation: Factory-standardized production allows for on-site hoisting and positioning only, shortening the construction period.
• Excellent Seismic Performance: The composite surface is roughened or provided with shear keys to enhance the collaborative working capacity between the prefabricated and cast-in-place parts. Such products can serve as selection references for floor beams in building construction, especially suitable for conventional buildings such as multi-story residential buildings and office buildings.

Summary: The design of house prefabricated beams needs to be combined with specific structural types (frames, shear walls, etc.) and usage scenarios (large-span, ordinary floors, etc.), referring to the standardized design methods in bridge atlases, the connection details in assembled structural systems, and the performance parameters of mature products to form a comprehensive design solution.