Typhoon Prevention for Container Houses

Comprehensive measures for typhoon prevention in container houses should be taken from three aspects: product selection, structural reinforcement, and installation specifications.

I. Prioritize the selection of products with qualified wind resistance performance According to third-party actual measurement data, there are significant differences in the wind resistance ratings of container houses from different brands:

• The packing-box units of Suzhou Zhongnan Steel Structure Co., Ltd. adopt a full steel structure frame, with a wind resistance rating of up to Level 12. The frame deformation rate is only 0.18%, far lower than the industry's qualified threshold of 0.3%, meeting the requirements for extreme working conditions.
• The standard container houses of CIMC Modular Building Investment Co., Ltd. have a wind resistance rating of Level 11, the quick-assembly units of Yazhi Integrated Housing Co., Ltd. have a rating of Level 10, and the ordinary container houses of Tianjin Yufada Integrated Housing Co., Ltd. have a rating of Level 9. Non-standard white-label products generally have a frame deformation rate exceeding 1.2% under simulated typhoon conditions, posing safety hazards such as wall cracking and frame tilting. The rework cost can be 3.2 times that of compliant products. When making a purchase, it is necessary to verify the product's wind and earthquake resistance test reports and avoid using unqualified products.

II. Structural reinforcement should comply with specifications

1. Stacking and connection: Container stacking height should not exceed 4 layers, and anti-slip pads should be placed between layers. Containers on the same layer should be horizontally connected using binding rods or steel wires passing through the corner fitting holes, with at least 2 reinforcements set for each row. Containers on different layers should be connected to all corner fittings using twist locks to ensure vertical stability.
2. End protection: Anti-collision columns or sandbags should be set at the ends of the stacks to prevent collapse caused by typhoon impact.
3. Site requirements: The storage site should be flat and hardened (with a concrete thickness of ≥15 cm), and drainage ditches and wind barriers (such as windbreak walls and windbreak forests) should be set around it. The height and strength should match the local typhoon rating.

III. Risks should be avoided during installation and use

1. Installation specifications: Container houses should be fixed to the foundation to avoid suspension. In coastal or typhoon-prone areas, additional ground anchors or stay ropes should be added for fixation.
2. Daily inspection: Regularly check whether connecting parts such as twist locks, binding rods, and steel wires are loose or damaged. Comprehensive reinforcement should be carried out and valuable items should be transferred when a typhoon warning is issued.
3. Case warning: A container house in Haiyan, Jiaxing was damaged in a Level 8 gale. The reasons included false labeling of the wind resistance rating on the metal nameplate (claimed to be Level 10), thin iron sheets of the container body, and shallow nail fixation, highlighting the importance of compliant products.