| 摘要 |
A storage rack having a flexible moment frame adapted for receiving pallets with stored goods. The frame flexes or floats when a vector, lateral force “V” is applied thereto, such as an earthquake. The frame includes spaced apart vertical posts. A plurality of sets of horizontal load and cross beams are releasably attached along a length of the vertical posts. When the lateral, vector force “V’ is applied to the moment frame, a top portion of the frame is displaced from the vertical at an angle “Δ Flexible”. This angle is greater than an angle “Δ Rigid” for similar storage racks with rigid frames. Thus with this angle of flexiblity, the moment frame reduces potential damage to the stored goods. |
| 主权项 |
1. A storage rack having a flexible moment frame for field installation, the moment frame adapted for receiving pallets with stored goods thereon, the moment frame configured to flex and float when a vector, lateral force V is applied thereto, the moment frame comprising:
first, second, third and fourth vertical posts, lower ends of the vertical posts mounted on horizontal base plates, the base plates adapted for receipt on a floor surface, the vertical posts having closed sides along a length thereof for added strength during the flexing of the moment frame; a first set of load beams, the first set including a first horizontal load beam, opposite ends of the first load beam releasably attached to the first and second vertical posts, the first set of load beams including a second horizontal load beam, opposite ends of the second load beam releasably attached to the third and forth vertical posts, the first and second load beams parallel to each other and disposed at the same height above the floor surface; and a first set of cross beams, the first set including a first horizontal cross beam, opposite ends of the first cross beam symmetrically and releasably attached to the first and third vertical posts, the first set of cross beams including a second horizontal cross beam, opposite ends of the second cross beam symmetrically and releasably attached to the second and forth vertical posts, the first and second cross beams parallel to each other and disposed at the same height above the floor surface; whereby, when the lateral force V is applied to the moment frame, a top portion of the moment frame is displaced from the vertical at an angle Δ Flexible, this angle greater than an angle Δ Rigid for storage racks with rigid frames, having diagonal trust supports or braces, thus Δ Flexible of the moment frame reducing potential damage to the stored goods. |
