NSHYPER BEAM™ × Optimal Jointing Method - Beam-end Semi-rigid Composite Joint -
- Flooring systems composed of steel beams and floor slab
- Rapid and Reasonable
- Useful and Reliable
- Eco-friendly and Sustainable
- Home
- Strong and Safe
NSHYPER BEAM™ × Beam-end Semi-rigid Composite Joint
Semi-rigid composite jointing method is the technique of designing the connection as a semi-rigid joint by placing the contact plates at the bottom flange of the steel beam at a beam-end connection of a composite beam composed of floor slabs and steel beams. Combined with Nippon Steel’s Hyper Beam, significant steel weight reductions can be achieved.
Semi-rigid Composite Joint
(Design guide is included in the Approved Document by BCA)
Based on the structural performance validation conducted by Nippon Steel, the design guidelines for this method were published under the joint supervision of the National University of Singapore, the Building Construction Authority of Singapore (BCA), and the Singapore Structural Steel Society, and are registered as an Approved Document by the BCA.
Design guide (2nd edition)
Advantages of NSHYPER BEAM™ × Beam-end Semi-rigid Composite Joint
- Reduction in steel weightDownsizing of steel beams can be achieved.
- Simple connection detailsNo complicated steel fabrication work such as welding is necessary.
- Improvement of dwelling performanceDwelling performance is improved in the face of floor vibration.
- Redundancy improvementConnections may have a margin of about 1.5 times the design moment capacity.
| Method | Conventional | Proposed | Conventional |
|---|---|---|---|
| Classification | Pinned | Semi-rigid | Rigid |
| joint detail |  |
|
 |
| Moment diagram and deflection |
 |
|
 |
| Beam size | Large |
Small
|
Small |
| Steel fabrication | Simple (No welding) |
Simple (No welding) |
Complicated (Need welding) |
Design Example
Comparison of conventional and proposed method
| Design condition | Beam span Lb: 12.0 m Design loads: SDL 3.0 kN/m2 IL 5.0 kN/m2 |
|
|---|---|---|
| Method | Conventional (Pinned) | Proposed (Semi-rigid) |
| Beam spacing | 2.4 m | 3.0 m |
| Number of joint | 8 | 6 |
| Beam size | UB533 x 210 x 82 | HY550 x 200 x 9 x 12 |
| Beam weight | 3936 kg | 2736 kg/m (▲30%) |
The above calculation is just an example and the results may vary depending on design condition and other factors.