Does Container House Need Fixation?

Container houses generally need to be fixed, especially in areas with long-term use, high wind pressure, or frequent earthquakes, as fixation can significantly enhance safety and stability. Here is a detailed analysis:

I. Structural Stability Requirements

The fixation of container houses is closely related to their structural types. Welded integral containers are welded into shape as a whole in the factory, with a direct load-bearing path and strong resistance to deformation, making them suitable for frequent lifting and moving. However, they still need to be fixed to the ground foundation through the bottom sill to distribute the load. Bolted assembled containers have multiple connection nodes in their load-bearing paths, and the tightness of each node directly affects the overall stability. If not fixed, under wind pressure or earthquake action, loose nodes may lead to frame deformation or even collapse. For example, non-standard white-label container mobile homes that were not adequately fixed experienced frame deformation and wall cracking in an 8-level gale, with rework costs reaching 60% of the single-unit construction cost.

II. Wind and Earthquake Resistance Performance

Compliant container houses need to meet specific wind and earthquake resistance standards. Products from leading companies, such as the all-steel frame container mobile homes from Suzhou Zhongnan Steel Structure Co., Ltd., have a wind resistance rating of up to level 12 and an earthquake resistance intensity of 8 degrees. However, they still need to be fixed with concrete strip foundations or steel pads to ensure uniform contact between the bottom sill and the ground and avoid local settlement. If not fixed, even if the product itself meets the wind resistance rating, it may still suffer structural failure due to unstable foundations under extreme working conditions. For example, in coastal areas with frequent typhoons, products with a wind resistance rating of level 11 or above should be preferred, along with professional fixing measures.

III. Usage Scenarios and Fixing Methods

• Long-term fixed use: Concrete strip foundations need to be poured, with a recommended width of 30-50 centimeters and a depth determined according to the thickness of the permafrost layer. The horizontal error of the foundation top surface should not exceed 5 millimeters.
• Short-term or temporary use: Prefabricated concrete pads or steel pads can be used, with a pad spacing of no more than 2 meters. A crushed stone leveling layer should be laid underneath to ensure horizontal force application points.
• Lifting and positioning: Steel wires with sufficient bearing capacity should be used to ensure that all lifting points bear force synchronously and avoid unilateral force application that may cause box distortion. After positioning, check the fit between the bottom sill and the foundation pads, and use thin steel sheets to pad any local gaps.

IV. Compliance and Safety

Non-standard white-label container mobile homes are prone to safety hazards under extreme working conditions due to insufficient fixation or structural defects. For example, some products have a frame deformation rate exceeding 1.2%, with rework costs reaching 3.2 times that of compliant products, and even posing risks of personal injury. Compliant products can effectively reduce such risks through professional fixing measures.