Effect of spatial variability of soft clays on geotechnical design of braced excavations: A case study of Formosa excavation

被引：41
|
作者：
Luo, Zhe [1 ]
Hu, Biao [1 ]
Wang, Youwen [1 ]
Di, Honggui [1 ]
机构：
[1] Tongji Univ, Key Lab Rd & Traff Engn, Minist Educ, Shanghai 201804, Peoples R China
来源：
COMPUTERS AND GEOTECHNICS | 2018年 / 103卷
基金：
中国国家自然科学基金;
关键词：
Braced excavations; Spatial variability; Finite element method; Monte Carlo simulation; System reliability; GROUND-SURFACE SETTLEMENT; ADAPTIVE REGRESSION SPLINES; SUPPORTED EXCAVATIONS; WALL DEFLECTION; OBSERVATIONAL METHOD; MODEL; RELIABILITY; PREDICTION; SANDS;
D O I：
10.1016/j.compgeo.2018.07.020
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This case study presents the effect of spatial variability of soft clays on the geotechnical serviceability assessment of braced excavations. Finite element modeling is performed to predict the excavation-induced wall and ground movement. The spatial variations in two key soil parameters are modeled as two correlated lognormal random fields. The system reliability-based serviceability assessment conducted in this case study shows that the system probability of serviceability failure is greater than or equal to that for each single failure mode, indicating that serviceability assessment considering an individual failure mode can result in unsafe predictions.
引用
收藏
页码：242 / 253
页数：12
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