Henan Modular Prefabricated Housing

Henan modular prefabricated housing is primarily constructed with reinforced concrete structures, utilizing a factory-prefabricated and on-site assembly model. It offers characteristics such as rapid construction and controllable costs, but different types of products vary in structural performance and applicable scenarios.

1. Reinforced Concrete Structure Prefabricated Housing: Durable and Suitable for Long-Term Fixed Scenarios

The prefabricated houses produced by "Sanzhiniu Cement Houses" in Kaifeng, Henan, are typical representatives. Their main bodies are composed of components such as wall panels, floor slabs, and stairs, with high-strength mortar used to fill the joints, ensuring structural stability. A 200-square-meter house can be assembled within 4 hours, with a cost of approximately 300 yuan per square meter and a warranty period of up to 70 years, significantly lower than traditional construction costs and with a longer lifespan. Such houses can be built up to 5 stories high and are suitable for long-term use scenarios such as residential buildings, dormitories, and office buildings.

Durability and Seismic Resistance: The quality of components and the splicing process are crucial. Associate Professor Chi Yin from Wuhan University points out that its durability is superior to that of traditional buildings, but its seismic performance is weaker than that of cast-in-place structures. In non-seismic zones (such as most areas in Henan), its design can meet safety requirements; if the number of stories is too high or it is located in a seismic zone, seismic design enhancements (such as adding structural columns and ring beams) are needed to improve safety.

2. Sandwich Panel Material Movable Container Houses: Lightweight and Flexible, Suitable for Temporary Scenarios

The movable container houses produced by Tianfeng in Xinxiang, Henan, use sandwich panel materials and have a designed lifespan of 30 years. Their advantages lie in rapid deployment and mobility, allowing for quick assembly of temporary buildings and disaster relief emergency housing through modular splicing. For example, in post-disaster reconstruction or temporary office spaces on construction sites, such houses can be installed within a few hours and at a lower cost than reinforced concrete structures.

Limitations: The fire resistance and thermal insulation properties of sandwich panel materials are relatively weak, and prolonged exposure to harsh environments (such as strong winds and heavy rain) may accelerate aging, making them more suitable for short-term or temporary needs.

3. Core Differences and Selection Recommendations

• Structural Performance: Reinforced concrete structures offer strong durability, but seismic performance needs to be optimized based on the scenario; sandwich panel structures are lightweight but have a shorter lifespan.
• Cost and Efficiency: Reinforced concrete structures have lower unit costs and are suitable for large-scale long-term use; sandwich panel structures have lower initial costs but may incur higher long-term maintenance costs.
• Applicable Scenarios: For residential buildings and office buildings in non-seismic zones, reinforced concrete structures are preferred; for temporary and emergency needs, sandwich panel structures are more suitable.

Henan modular prefabricated housing balances efficiency and cost through material and process innovations, but the appropriate type must be selected based on specific needs (such as service life and seismic requirements).