Bottom Frame Diagram of Container House

The bottom frame of a container house mainly consists of corner fittings, bottom side rails, bottom end rails, thresholds, bottom cross members, forklift pockets (for some container types), gooseneck tunnels (for specific container types), and flooring. Here is a detailed introduction:

Corner Fittings: Located at the four corners of the container's bottom, they are key load-bearing and connecting components. They not only bear the weight of the cargo inside the container and various dynamic loads during handling but also enable the lifting, handling, and securing of the container through connections with equipment such as cranes, ensuring the stability of the entire container during transportation and stacking.

Bottom Side Rails: Two bottom side rails are arranged longitudinally along both sides of the container's bottom and are connected to the corner fittings. They are important longitudinal support structures for the bottom frame, corresponding to the top side rails of the side wall structure. Together, they bear lateral forces, such as the rolling forces when a ship is sailing, ensuring the structural integrity of the container when subjected to lateral forces.

Bottom End Rails: These are transverse beams connecting the two corner fittings and intersect perpendicularly with the bottom side rails. The bottom end rails enhance the transverse stability of the bottom frame and work in conjunction with the bottom side rails to disperse and transfer transverse loads, preventing deformation of the container's bottom when subjected to transverse impacts or pressures.

Thresholds: Set at the bottom of the container's rear end frame, they are the cross members below the container doors. They not only provide support for the container doors but also bear certain forces when the doors are opened and closed. At the same time, they work with the bottom end rails to ensure the structural strength of the container's rear end bottom.

Bottom Cross Members: Evenly distributed across the container's bottom, they connect the bottom side rails and bottom end rails. The bottom cross members further enhance the overall rigidity of the bottom frame, evenly disperse the weight of the cargo inside the container, making the bottom load more uniform, and avoiding structural damage caused by local stress concentrations.

Flooring: Laid on top of the bottom frame, it directly bears the weight of the cargo inside the container. Generally, it is made of sturdy and durable materials such as wood or steel, with a treated surface that has certain anti-slip, wear-resistant, and anti-corrosion properties, ensuring the safe storage of cargo during transportation.