Container and Building Structure Calculation

The structural calculation of container houses must strictly adhere to relevant design standards and specifications, with specific calculation points as follows:

I. Basic Specifications and Load Values
The design of container houses should be based on core specifications such as the "Steel Structure Design Standard" and the "Building Structure Load Standard," clarifying the design service life (e.g., adjusting wind and snow load coefficients for a 25-year lifespan). For foundation loads, the roof dead load is 0.3 kN/㎡, live load is 0.5 kN/㎡; the floor dead load is 0.5 kN/㎡, live load is 2.0 kN/㎡ (civil standard). The material used is Q235B steel, with a yield strength of 235 MPa and a safety factor ≥ 1.5.

II. Structural Systems and Calculation Requirements

1. Stacked Container Structure: For structures with no more than 3 layers, if there are no openings, overhangs, and the connections are reliable, overall verification can be waived; it is necessary to calculate the corner fitting connection forces and additional stress due to overturning. Seismic verification should be performed using the base shear method to calculate inter-story shear forces and displacements.
2. Container Frame Structure: For structures with no more than 6 layers, the frame can adopt a pure frame or central bracing form; overall internal force calculations are required, with seismic actions allocated according to lateral force stiffness. The bottom frame effect should be multiplied by an amplification factor of 1.2.
3. Irregular Structure: When the layout is irregular or local stiffness is reduced, calculations should be performed using a spatial model, and the roof or floor must meet the requirements for planar rigid diaphragms.

III. Key Component Calculations

1. Bottom Floor: Secondary beams should be verified for bending, shear, and deflection (maximum deflection ≤ L/250) as simply supported beams, while main beams should be verified for overall stress as continuous beams to ensure stresses do not exceed the design strength.
2. Columns and Side Walls: Columns should be verified for compressive strength, stability, and slenderness ratio; side walls should be verified for bending and wind pressure resistance, with additional reinforcing frames and vertical bars added when openings or doors are present.
3. Roof Structure: Focus on verifying the bending capacity under snow load conditions and the uplift resistance under wind negative pressure conditions, with strict control over deflection to ensure stable drainage slopes.

IV. Overall Stability and Connections
For outdoor scenarios, it is necessary to calculate the anti-overturning and anti-sliding moments under wind loads, ensuring stability through counterweights, anchor bolts, or foundation anchoring; foundation connections should be verified for the tensile and shear capacities of anchor bolts.

V. Special Conditions and Construction
Seismic design should control the inter-story displacement ratio (wind load ≤ 1/400, earthquake ≤ 1/300). Openings should be arranged in a staggered pattern with non-perforated and perforated containers. Overhangs should not be too long and are prohibited from having openings; design documents should specify the fire rating, corrosion protection lifespan, and surface treatment requirements.