Reliability-based design and robustness for blast-resistant design of RC buildings
- Publisher:
- SAGE PUBLICATIONS INC
- Publication Type:
- Journal Article
- Citation:
- Advances in Structural Engineering, 2022, 25, (7), pp. 1402-1412
- Issue Date:
- 2022-05-01
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
| Reliability-based design and robustness for blast-resistant design of RC buildings.pdf | Published version | 616.68 kB |
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Explosive blasts from accidental or malevolent sources constitute an extreme event resulting in abnormal loads on buildings and other structures. A reinforced concrete (RC) multistorey building is assumed to be attacked by a terrorist vehicle-borne improvised device. Structural reliabilities are calculated for each RC column in the multistorey building exposed directly to the blast event. The probability of progressive collapse for the building is then estimated using system reliability analysis comprising of ground floor columns exposed to the explosive blast. The RC columns are designed according to United States blast-resistant design standard based on (i) threat dependent and (ii) alternate path design methods. The effects of threat dependent and alternate path design methods on column sizing, column reliability, and building collapse probability are investigated by conservatively assuming that collapse occurs if one or more columns fail. The robustness is also dependent on the location of the explosive. It was also found that a threat-dependent design appears to be more effective than the alternate path method in reducing building collapse risks.
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