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考虑Markov岩性预测的引水隧洞施工全过程仿真研究
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作者 佟大威 余佳 +2 位作者 岳攀 毕磊 赵梦琦 《水利水电技术》 CSCD 北大核心 2015年第11期60-65,共6页
针对引水隧洞的施工,利用Markov岩性预测模型对地质岩性进行预测,得到隧洞沿程的岩性概率分布。在所得概率分布的基础上,随机确定隧洞岩性情况,并进行相应仿真参数的选择,进行考虑岩性不确定性的引水隧洞施工全过程仿真。结果表明:在仿... 针对引水隧洞的施工,利用Markov岩性预测模型对地质岩性进行预测,得到隧洞沿程的岩性概率分布。在所得概率分布的基础上,随机确定隧洞岩性情况,并进行相应仿真参数的选择,进行考虑岩性不确定性的引水隧洞施工全过程仿真。结果表明:在仿真参数选取时考虑地质条件的影响能够更全面地反映施工过程的不确定性,有助于更好地分析隧洞的施工风险。 展开更多
关键词 引水隧洞 Markov预测模型 岩性不确定性 仿真参数 全过程仿真
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Soil Uncertainties on Performance of Geotechnical Works
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作者 Michele Maugeri Salvatore Grasso 《Journal of Civil Engineering and Architecture》 2010年第5期37-47,共11页
Performance-Based Design (PBD) is a more rational approach, particularly in seismic environments. In this approach it is relevant the performance required to structures and to geotechnical works, as well as the geot... Performance-Based Design (PBD) is a more rational approach, particularly in seismic environments. In this approach it is relevant the performance required to structures and to geotechnical works, as well as the geotechnical constitutive models used to predict the performance. The parameters of the constitutive models are related in turn to soil properties. So soil properties are a key point for Performance-Based Design. Questions arising are: (i) which are the more relevant soil properties to solve a specific PBD geotechnical problem? (ii) which are the more relevant model parameters and how they can be evaluated and/or correlated to soil properties? (iii) which is the role of the soil parameters uncertainty in Performance-Based Design? An answer to these questions is given in this paper, outlining the potential offered by the new advanced in-situ and laboratory tests and discussing the performance required by some geotechnical works. 展开更多
关键词 Performance Based Design (PBD) soil properties geotechnical works physical environment.
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