摘要
以物理模型試驗及三維數值分析進行管推進工程研究,試驗方面以管推進物理模型試驗機模擬開挖面支撐壓力過大或不足對地表穩定性的影響,並於推進過程監測地表變位及土壓力變化;數值方面先以有限元素法程式ABAQUS模擬物理模型試驗之行為,將數值分析與模型試驗結果相互驗證,以檢討數值分析依據之Leca(1990年)淺屑隧道開挖面穩定理論及土壤組成律ExtendedDrucker-PragerModels。驗證完成後,進一步以數值方法模擬現埸破除鏡面常發生之土體坍落行為及探求其鬆動範圍。
Coupling physical modeling and numerical analysis on pipe jacking behavior are performed. In the former analysis, the influence of the heading pressure on the surface stability is studied. Based on the results of physical modeling and the theoretical analysis by Leca (1990), numerical model is calibrated before application to the study of the subsidence behavior during the pipe jacking process.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第z2期4993-4998,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
數值分析
管推進工程
物理模型
numerical analysis, pipe jacking, physical modeling
