Structural Diagram of Cement Prefabricated Houses
Currently, specific structural diagrams of cement prefabricated houses cannot be directly provided, but their structural types and design key points can be introduced. Cement prefabricated houses, also known as prefabricated concrete structure houses, are constructed by prefabricating concrete components in factories and then assembling them on-site. Their structural design must balance safety, durability, and construction efficiency. Here are the key points:
Structural Types and Component Composition
The core structural systems of cement prefabricated houses include frame structures, shear wall structures, and frame-shear wall hybrid structures. Frame structures use prefabricated beams and columns as the main load-bearing components, connected at nodes to form an integral structure, suitable for multi-story residential or office buildings. Shear wall structures rely on prefabricated walls to resist horizontal forces and are commonly found in high-rise buildings. Hybrid structures combine the advantages of both, balancing seismic resistance and spatial flexibility. Prefabricated components typically include non-load-bearing parts such as floor slabs, stairs, and balcony slabs, as well as load-bearing parts like beams, columns, and walls. Some projects also use prefabricated exterior wall panels to achieve integrated building enclosure and decoration.
Design Specifications and Standards
Design must strictly adhere to the Technical Standard for Prefabricated Concrete Buildings (GB/T 51231-2016) and the Code for Design of Concrete Structures (GB 50010-2010). Key parameters include: the concrete strength grade of components should not be lower than C30, the thickness of the steel reinforcement cover should meet durability requirements (e.g., 20mm for Class I environments), and sufficient stirrups should be configured in node connection areas to enhance shear resistance. Additionally, finite element analysis should be conducted during the design phase to verify the overall structural performance, ensuring that it meets the seismic objectives of "no damage under minor earthquakes, repairable under moderate earthquakes, and no collapse under major earthquakes" under the action of earthquakes, wind loads, etc.
Construction Key Points and Quality Control
During component production, mold accuracy (error ≤ 2mm), curing system (standard curing temperature of 20 ± 2°C, humidity ≥ 95%), and embedded part positioning deviation (≤ 3mm) must be controlled. On-site assembly should employ reliable techniques such as sleeve grouting connections and grout-anchored lap connections to ensure node strength, and temporary support systems should be used to maintain component stability. After construction, structural entity inspections should be conducted, including rebound method for measuring concrete strength and ultrasonic method for measuring crack width, to ensure quality meets design requirements.
For specific structural diagrams, it is recommended to contact a professional design institute or refer to standard drawing collections such as the Depth Drawings for Construction Drawing Design of Prefabricated Concrete Structures (16G101-1~3), which contain typical node construction details and design descriptions.
