中国地质灾害与防治学报
中國地質災害與防治學報
중국지질재해여방치학보
THE CHINESE JOURNAL OF GEOLOGICAL HAZARD AND CONTROL
2012年
3期
18-20,38
,共4页
黄土边坡%二维和三维模型%变形预测%ADINA
黃土邊坡%二維和三維模型%變形預測%ADINA
황토변파%이유화삼유모형%변형예측%ADINA
loess slope%2D and 3D models%deformation prediction%ADINA software
边坡变形特征在稳定性预测中尤为重要,已有文献往往只局限于二维或三维分析,没有对两者加以比较,导致模型选择与分析的问题不一致,浪费了时间和金钱。针对这个问题,课题组以某黄土边坡加固为例,运用ADINA软件建立二维和三维模型进行模拟,并与现场实际对照。结果表明:两种模型对边坡变形趋势的分析结果一致;三维模型变形预测值大于二维模型的30%~100%,分别得出定性和定量的结果,三维模型更符合实际变形;两种模型预测出的最薄弱部位和现场实际一致,具有实用性。这些结论为黄土边坡的变形预测和加固分析模型的选择提供了参考依据。
邊坡變形特徵在穩定性預測中尤為重要,已有文獻往往隻跼限于二維或三維分析,沒有對兩者加以比較,導緻模型選擇與分析的問題不一緻,浪費瞭時間和金錢。針對這箇問題,課題組以某黃土邊坡加固為例,運用ADINA軟件建立二維和三維模型進行模擬,併與現場實際對照。結果錶明:兩種模型對邊坡變形趨勢的分析結果一緻;三維模型變形預測值大于二維模型的30%~100%,分彆得齣定性和定量的結果,三維模型更符閤實際變形;兩種模型預測齣的最薄弱部位和現場實際一緻,具有實用性。這些結論為黃土邊坡的變形預測和加固分析模型的選擇提供瞭參攷依據。
변파변형특정재은정성예측중우위중요,이유문헌왕왕지국한우이유혹삼유분석,몰유대량자가이비교,도치모형선택여분석적문제불일치,낭비료시간화금전。침대저개문제,과제조이모황토변파가고위례,운용ADINA연건건립이유화삼유모형진행모의,병여현장실제대조。결과표명:량충모형대변파변형추세적분석결과일치;삼유모형변형예측치대우이유모형적30%~100%,분별득출정성화정량적결과,삼유모형경부합실제변형;량충모형예측출적최박약부위화현장실제일치,구유실용성。저사결론위황토변파적변형예측화가고분석모형적선택제공료삼고의거。
Slope deformation characteristic's importance in stability prediction is obvious. The existent documents stud- ied 2D or 3D model only, neglecting the respective effect of them, thus model selection is in no accordance with the problem. To this problem,Study-group used ADINA to establish 2D and 3D model and compare them to the worksite based on one loess slope reinforcement. The results show:these two models have a similar result on trend of slope de- formation;the deformation prediction values of 3D is 30% to 100% higher than 2D, obtaining characteristic-oriented and quantity-oriented result respectively,3D model is more actual;the most weak positions predicted by simulation are in accordance with the worksite,it's practical. These conclusions provide references for model selection of loess slope deformation prediction and reinforcement.