Framework House with Prefabricated Panels
The application of prefabricated panels in framework houses may exist, but whether they are used and how they are used must be determined based on the structural type. The following analysis is conducted from different structural types:
1. Framework-light panel structure: Prefabricated panels as load-bearing or enclosure components
The framework-light panel structure is a typical form combining prefabricated components with a framework. Its main framework is composed of reinforced concrete beams and columns, which bear vertical and horizontal loads; prefabricated large wall panels (such as reinforced concrete wall panels and lightweight composite wall panels) are fixed to the framework using connecting elements such as welded angle irons and bolts, serving as both enclosure structures to divide spaces and participating in overall load-bearing. In such structures, prefabricated panels are a core component and must meet design requirements for earthquake resistance and fire prevention. They are commonly found in industrial plants and low-rise residential buildings.
2. Framework structure residences: Prefabricated panels are mostly used for non-load-bearing infill walls
Conventional framework structure residences use cast-in-place concrete beams, panels, and columns as the load-bearing skeleton, with the floor typically using cast-in-place panels to ensure integrity. However, non-load-bearing infill walls may use prefabricated lightweight materials, such as aerated concrete blocks and hollow slabs, to divide indoor spaces. These prefabricated panels do not participate in structural load-bearing and only need to meet performance requirements for sound insulation and thermal insulation. They offer high construction efficiency and low self-weight, aligning with the seismic design principle of “strong columns and weak beams” in framework structures.
3. Special cases combining framework and prefabricated panels
Some framework structures may partially adopt prefabricated panel technology, such as using prefabricated hollow panels as non-load-bearing floor coverings (requiring a cast-in-place concrete composite layer to form an integral whole) or prefabricated stairs and balconies connected to the framework through reserved reinforcement. However, it must be clarified that if prefabricated panels are directly used as load-bearing floor or roof panels, the structural type may change to an “assembled framework structure”, requiring node design and seismic verification in accordance with relevant specifications.
4. Essential differences between traditional prefabricated panel buildings and framework structures
Traditional prefabricated panel buildings are mostly found in brick-concrete structures, where prefabricated hollow panels are directly placed on longitudinal and transverse walls, with the walls bearing the main vertical loads; in contrast, the load-bearing system of framework structures consists of beams and columns, with walls serving only as enclosures. If prefabricated panels are used as load-bearing components in framework structures (such as directly replacing cast-in-place floors), the load-bearing capacity of the framework beams and the reliability of node connections must be verified through calculations, otherwise structural weaknesses may occur due to sudden changes in stiffness.
Summary: Whether a framework house uses prefabricated panels depends on design requirements and structural type. In framework-light panel structures, prefabricated panels are key components; in framework residences, they are mostly used in non-load-bearing parts; in special scenarios, comprehensive judgment based on specifications is required to avoid affecting structural safety due to misuse. In practical applications, current design standards (such as the “Technical Specification for Assembled Concrete Structures”) should be prioritized to ensure the collaborative performance of prefabricated components and the framework.
