Probabilistic Analysis of Ground Surface Settlement of Excavation Considering Spatial Variable Modified Cam-Clay Model Parameters
نویسندگان
چکیده
The modified Cam-clay model (MCC model) is capable of representing the consolidation process soil under a complex stress path and thus extensively adopted in numerical analysis excavation engineering. For reliability problems ground surface settlement excavation, minimal attention has been paid to investigating effect spatial variable MCC parameters on during staged construction excavation. Based laboratory tests sensitivity analysis, this study launched probabilistic transient hydro-mechanical coupling considering deformation (λ κ) using an MCS-FORM hybrid approach. results show that: (1) Both have positive relationship with settlement, κ more significant than λ. (2) observed maximum location follow log-normal distribution. (3) An increasing COV leads enhanced expansion influence region, decreased reliability. (4) index greatly delimited controlled standard value Hcon, it decreases significantly at preliminary stage then progressively until stable excavating. Overall, adopting deterministic without variability underestimating risk due region.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2022
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app12199411