期刊
LANDSLIDES
卷 7, 期 2, 页码 169-180出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10346-010-0200-5
关键词
Vulnerability; Buildings; Rockfalls; Impact; Risk; Progressive collapse
资金
- European Union [MRTN-CT-2006-035798, 226479]
- Spanish Ministry of Science and Innovation [BIA2008-06614]
A procedure is presented for investigating the response of reinforced concrete buildings to rockfall impact. The method considers a single rock hit on the basement columns, and it includes four steps: (a) calculation of the probability of a rock impact on a member of the load-bearing system, taking into account the block size and the design of the structure; (b) evaluation of the response of one or more structural elements to the hit based on element capacity; (c) in the case of structural element failure, assessment of the robustness of the whole structural system, calculating the potential for progressive collapse; and (d) calculation of a damage index (DI), which is the ratio of structural elements that fail to the total number of structural elements. The proposed method is applied to a reinforced concrete building for a range of rockfall paths and intensities. The analysis has been carried out for a 2-m-diameter block and velocities < 3.5 m/s. The possible damage range is found to be highly variable, with DI values ranging from 0.01 to 1 depending on the impact location and block velocity.
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