Abstract:This study is aimed at developing a simplified model for evaluating the damage risk of buildings adjacent to a braced excavation. The present study incorporates the KJHH simplified model with the random field theory through Monte-Carlo simulation to be able to consider the uncertainty of geotechnical materials. Compared with the conventional methods, the developed simplified model can be more rational to conduct the analysis of damage risk. An actual excavation case history located in Taipei City is used to verify the developed simplified model. The angular distortion of buildings is adopted as a damage criteria for evaluating the damage of adjacent buildings. The analysis results revel that the developed simplified model is capable of assessing the excavation-induced damage potential of adjacent buildings.
唐雨耕, 龚东庆. 以随机简易模式评估深基坑工程引致邻房受损之风险[J]. 岩土工程学报, 2012, 34(suppl): 207-211.
TANG Yu-geng, KUNG Gordon Tung-chin. Random simplified model for assessing damage risk of buildings adjacent to a braced excavation. Chinese J. Geot. Eng., 2012, 34(suppl): 207-211.
[1] KUNG G T C, JUANG C H, HSIAO E C L, HASHAH Y M A. Simplified model for wall deflection and ground-surface settlement caused by braced excavation in clays[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2007, 133(6): 731–747.[2] BOX G E, MULLER M E. A note on the generation of random normal deviates[J]. The Annals of Mathematical Statistics, 1958, 29(2): 610–611.[3] SCHUSTER M, KUNG G T C, JUANG C H, and HASHASH Y M A. Simplified model for evaluating damage potential of buildings adjacent to a braced excavation[J].” Journal of Geotechnical and Environmental Engineering, 2009, 135(12): 1823–1835.[4] BJERRUM L. “Discussion.”[C]// Proceeding Conference on Soil Mechanics and Foundation Engineering, 1963, 3: 1–3.[5] HSIAO C L, SCHUSTER M, JUANG C H, KUNG G T C. Reliability analysis and updating of excavation-induced ground settlement for building serviceability assessment[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2008, 134(10): 1448–1458.[6] BAROTH J, MALECOT Y. Probabilistic analysis of the inverse analysis of an excavation problem[J]. Computers and Geotechnics, 2010, 37: 391–398.[7] ANG A H S, TANG W H. Probability concepts in engineering planning and design, Vol. II: Design, risk and reliability[M]. New York: Wiley, 1984.[8] 廖瑞堂. 逆打深开挖之行为研究[D]. 台北: 台湾科技大学营建工程研究所, 1996. (LIAO J T. Performance of a top down deep excavation[D]. Taibei: Taiwan University of Science and Technology, 1996. (in Chinese))