Abstract
The dynamic displacement ductility and ultimate load-carrying capability of three partially-prestressed concrete (PPC) beams which were unbonded, were experimentally obtained by applying impact load to their middle with dropping hammers, and the typical measurement wave curves were given. Influences of a dropping hammer's gravitational potential energy on the dynamic properties of the PPC beam were analyzed. Based on the analog simulation theory, the impact-load-carrying capability of the real unbonded PPC beam with span 12 m was gained. Results show that the unbonded PPC beam's anti-impact properties are good, the fragile destruction will not happen, and the unbonded PPC beams can be used in wide-span underground structures.
| Original language | English |
|---|---|
| Pages (from-to) | 256-261 |
| Number of pages | 6 |
| Journal | Baozha Yu Chongji/Expolosion and Shock Waves |
| Volume | 26 |
| Issue number | 3 |
| State | Published - May 2006 |
| Externally published | Yes |
Scopus Subject Areas
- General Physics and Astronomy
Keywords
- Anti-impact property
- Dropping hammer
- Dynamic properties
- Experimental study
- Mechanics of explosion
- Prestressed concrete beam