Abstract
Concrete structures may deteriorate over time due to aggressive service environments, leading to a reduction in their strengths, stiffnesses and reliabilities. In general, the assessment of time-dependent reliability of ageing structures must consider uncertainties in structural deterioration as well as non-stationarities in the structural load processes. This paper develops an approximate method for assessing the impact of structural deterioration and non-stationary live loads on structures, which requires only low-dimensional integration and reduces the cost of assessing time-dependent reliability over a service life extending to 50 years significantly. This approximate method is demonstrated through several examples. The importance of non-stationarities in the resistance and load processes on time-dependent reliability is illustrated and the accuracy of the method is confirmed in several cases utilising Monte Carlo simulation.
| Original language | English |
|---|---|
| Pages (from-to) | 1566-1572 |
| Number of pages | 7 |
| Journal | Structure and Infrastructure Engineering |
| Volume | 12 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1 Dec 2016 |
| Externally published | Yes |
Keywords
- deterioration
- loads
- probability
- Reinforced concrete
- structural engineering
- time-dependent reliability