Container House Beam Lifting Specification

The specification for lifting container house beams requires strict control from multiple aspects, including equipment, container body, operation, management, structure, and technical procedures. The specific key points are as follows:

I. Inspection of Lifting Equipment
Before lifting, a comprehensive safety inspection should be conducted on key components such as the gantry frame, rollers, and hoists to ensure they are in good technical condition without any abnormalities such as wear, cracks, or deformation. Lifting machinery must undergo professional maintenance and repair to ensure the normal operation of core functions such as the hydraulic system and braking devices, thereby avoiding accidents caused by equipment failures.

II. Confirmation of Container Body Condition
Before lifting, a visual inspection of the container body of the container house should be carried out, with a focus on confirming that there is no damage on the exterior of the container body and no deformation or cracks in connection parts such as lifting lugs and lock holes. If any structural damage to the container body is found, it should be repaired or replaced immediately to prevent the container body from falling off or overturning due to uneven local stress during the lifting process.

III. Safety Control during the Lifting Process

1. Safe Distance for Personnel: When operators pull the bags or operate lifting devices, they should maintain a safe distance of more than 1 meter to avoid collision injuries caused by container body swaying or lifting device breakage.
2. Stability Assurance: During the lifting process, the stability of the container must be maintained through methods such as balanced counterweights and slow lifting to prevent lateral swaying or tipping. When stacking containers in multiple layers, the principle of 'top first, bottom last' should be followed to ensure that the upper-layer structure is completely fixed before proceeding with the lower-layer lifting.
3. Dynamic Monitoring: If loading onto a vehicle or landing operations cannot be completed due to weather, equipment failures, or other reasons, operators must continuously monitor the site and set up temporary supports or warning signs to prevent unauthorized personnel from approaching.

IV. On-site Management of Operations

1. Collaborative Coordination: Operators need to communicate closely with the loading (unloading) vehicle driver to confirm that the positioning of the container lock on the trailer meets transportation requirements before releasing the lifting device.
2. Warning Signs: The lifting area should be equipped with fences, warning lights, or reflective signs to prohibit non-operators from entering and avoid the risks of falling objects or mechanical collisions.

V. Structural Safety Technical Requirements

1. Foundation Bearing Capacity: The foundation bearing capacity of the lifting site should reach more than 150 kPa, and the settlement difference should be controlled within the range of 1/500 to prevent structural cracking of the container body due to uneven foundation settlement.
2. Connection Node Strength: The connection nodes of the container body should adopt special seismic components with a shear strength of not less than 200 kN to ensure structural stability under extreme conditions such as earthquakes or strong winds.
3. Lateral Force Resistance Design: Lateral force-resisting components should be symmetrically arranged in plan and uniformly stiffened vertically. When stacking containers in multiple layers, the corner fittings and corner columns must be aligned and locked up and down to avoid overall instability caused by structural eccentricity.

VI. Key Points of Technical Procedures

1. Design Life: The design service life of container houses is usually 50 years (with a relatively high structural safety factor) or 25 years (for ordinary scenarios), and appropriate standards should be selected according to the usage environment.
2. Corner Fitting Specifications: Corner fittings are the only stacking force-transmitting points, and it is strictly prohibited to use spot welding instead of bolt connections to ensure a clear and reasonable force-transmitting path in the structure.
3. Seismic Requirements: Multi-story container houses need to verify their seismic performance through finite element analysis to meet the local seismic fortification intensity requirements.