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拼接工况下路基的参数反演与沉降特性

, PP. 7-12

Keywords: 道路工程,拼接路基,Duncan-Chang模型,参数敏感性,差异沉降

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Abstract:

应用路基和土基的Duncan-Chang模型,选用拼接路基顶面的最大沉降量作为目标函数,研究了路基拼接工况下模型的灵敏度函数和最敏感参数,使用实体工程中沉降板的检测数据进行了参数反演,并根据反算参数计算了铺筑路面结构层引起的路基顶面差异沉降。研究结果表明拼接工况下,路基E-B模型对模量指数n最敏感,模量系数kE也有较大影响;土基E-B模型对破坏比Rf最敏感,kE和n也有较大影响;埋设在土基顶面和路堤中层的沉降板检测数据可用来反算土基和路基Duncan-Chang模型的最敏感参数;拼接路基表面的工后沉降计算曲线与类似工程实测沉降曲线具有较高的相似性,采用反算参数的数值仿真可以描述拼接工况下路基的沉降特征。

References

[1]  VISWANADHAM B V S, KONIG D. Centrifuge modeling of geotextile-reinforced slopes subjected to differential settlements[J]. Geotextiles and Geomembranes, 2009, 27(2): 77-88.
[2]  张永清,王选仓,王朝辉.拓宽路基差异沉降计算参数的确定[J].长安大学学报:自然科学版,2009,29(2):13-18. ZHANG Yong-qing, WANG Xuan-cang, WANG Chao-hui. Calculation parameter determination of widened subgrade difference settlement[J]. Journal of Chang'an University: Natural Science Edition, 2009, 29(2): 13-18.(in Chinese)
[3]  张慧梅,李云鹏,毛 成.人工神经网络在软土地基路基沉降预测中的应用[J].长安大学学报:自然科学版,2002,22(4):20-22. ZHANG Hui-mei, LI Yun-peng, MAO Cheng. Settlement prediction of roadbed in soft ground by using artificial neural networks[J]. Journal of Chang'an University: Natural Science Edition, 2002, 22(4): 20-22.(in Chinese)
[4]  章定文,刘松玉.软土地基高速公路扩建中新老路堤相互作用的数值分析[J].中国公路学报,2006,19(6):7-12. ZHANG Ding-wen, LIU Song-yu. Numerical analysis of interaction between old and new embankment in widening of freeway on soft ground[J]. China Journal of Highway and Transport, 2006, 19(6): 7-12.(in Chinese)
[5]  KARIM M R, GNANENDRAN C T, LO S C R, et al. Predicting the long-term performance of a wide embankment on soft soil using an elastic-viscoplastic model[J]. Canadian Geotechnical Journal, 2010, 47(2): 244-257.
[6]  王东耀,折学森,叶万军,等.高速公路软基最终沉降预测的范例推理方法[J].长安大学学报:自然科学版,2006,26(1):20-23,42. WANG Dong-yao, SHE Xue-sen, YE Wan-jun, et al. Case-based reasoning approach to settlement of expressway on soft foundation[J]. Journal of Chang'an University: Natural Science Edition, 2006, 26(1): 20-23, 42.(in Chinese)
[7]  朱志铎,周礼红.软土路基全过程沉降预测的Logistic模型应用研究[J].岩土工程学报,2009,31(6):965-969. ZHU Zhi-duo, ZHOU Li-hong. Application of Logistic model in settlement prediction during complete process of embankment construction[J]. Chinese Journal of Geotechnical Engin-eering, 2009, 31(6): 965-969.(in Chinese)
[8]  傅 珍,王选仓,陈星光,等.拓宽道路工后差异沉降控制标准[J].长安大学学报:自然科学版,2008,28(5):10-13. FU Zhen, WANG Xuan-cang, CHEN Xing-guang, et al. Controlling criterion of differential settlements after widening expressway[J]. Journal of Chang'an University: Natural Science Edition, 2008, 28(5): 10-13.(in Chinese)
[9]  翁效林,王 玮,张留俊.拓宽路基荷载下管桩复合地基沉降变形模式[J].长安大学学报:自然科学版,2012,32(1):31-35. WENG Xiao-lin, WANG Wei, ZHANG Liu-jun. Deformation characteristics of widen subgrade settlement with pipe pile treatment[J]. Journal of Chang'an University: Natural Science Edition, 2012, 32(1): 31-35.(in Chinese)
[10]  殷宗泽.高土石坝的应力与变形[J].岩土工程学报,2009,31(1):1-14. YIN Zong-ze. Stress and deformation of high earth and rock-fill dams[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(1): 1-14.(in Chinese)
[11]  付宏渊.基于灵敏度分析的地基沉降反演参数优化[J].长沙理工大学学报:自然科学版,2006,3(2):24-28. FU Hong-yuan. Optimizing back-analysis parameters for settlement prediction based on sensitivity analysis[J]. Journal of Changsha University of Science and Technology: Natural Science, 2006, 3(2): 24-28.(in Chinese)
[12]  张军辉.不同软基处理方式下高速公路加宽工程变形特性分析[J].岩土力学,2011,32(4):1216-1222. ZHANG Jun-hui. Analysis of deformation behavior of express-way widening engineering under different foundation treatments[J]. Rock and Soil Mechanics, 2011, 32(4): 1216- 1222.(in Chinese)
[13]  贾 宁,陈仁鹏,陈云敏,等.杭甬高速公路拓宽工程理论分析及监测[J].岩土工程学报,2004,26(6):755-760. JIA Ning, CHEN Ren-peng, CHEN Yun-min, et al. Theoretical analysis and measurement for widening project of Hang-Yong Expressway[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(6): 755-760.(in Chinese)

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