Container House Fixed Anchor

The commonly used fixed anchor for container houses is the screw anchor foundation, which achieves stable support by screwing steel structures into the soil and offers advantages such as easy installation, reusability, and environmental friendliness.

Design Principles and Advantages of Screw Anchor Foundations

Screw anchor foundations consist of multiple spiral-shaped steel structures that are mechanically screwed into the soil to form a load-bearing foundation. Their core advantages include:

• High Installation Efficiency: There is no need to pour a concrete platform; simply screw the anchor directly into the soil to complete the fixation, significantly shortening the construction period. For example, after adopting screw anchor foundations, State Grid Shaoxing Power Supply Company saw a threefold increase in installation efficiency.
• Reusability: Screw anchors can be disassembled and relocated to a new site for secondary use, doubling the material reuse rate and aligning with sustainable development concepts.
• Outstanding Environmental Performance: With zero excavation, zero pouring, and zero pollution, they avoid the soil damage caused by traditional concrete construction and reduce the generation of construction waste.

Fixation Methods and Construction Key Points

The fixation process of screw anchor foundations must strictly adhere to technical specifications:

• Positioning and Screwing In: Determine the layout points of the screw anchors based on the load distribution of the container house to ensure reasonable spacing. Use professional equipment to vertically screw the screw anchors into the soil until reaching the design depth (usually penetrating through the soft soil layer to the stable soil layer).
• Horizontal Alignment: Check the verticality of the screw anchors using a laser level or string method, with deviations controlled within ±1% to prevent structural stress concentration in the container house due to foundation inclination.
• Connection and Reinforcement: Fix the corner fittings of the container to the top of the screw anchor using high-strength bolts or welding to form a rigid connection. For multi-story container houses, diagonal braces or tie rods should be added vertically to enhance overall stability.

Applicable Scenarios and Economic Benefits

Screw anchor foundations are particularly suitable for temporary or movable container house projects:

• Construction Sites: Meet the temporary housing and office needs of workers, and can be quickly disassembled and relocated to a new site after construction is completed.
• Emergency Relocation: In post-disaster reconstruction or emergency situations, container houses can be quickly deployed as temporary shelters.
• Long-term Cost Advantages: Although the initial investment is relatively high, the cost can be recovered after three uses, and the overall service life can reach more than ten times, significantly reducing long-term investment.