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土工格室-碎石桩双向增强复合地基大比例室内模型试验

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Keywords: 道路工程,双向增强复合地基,大比例室内模型试验,土工格室,碎石桩

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Abstract:

？为分析不同地基对其加固后的路基竖向承载力和竖向变形的影响,设计并完成了单纯软基、土工格室加筋地基、碎石桩复合地基和土工格室-碎石桩复合地基4组大比例室内模型试验,分析了经格室加筋垫层、碎石桩和土工格室-碎石桩加固后的路基竖向承载力和竖向变形变化规律。结果表明:经土工格室-碎石桩双向增强复合地基处治后的路基承载力大于单一碎石桩复合地基和单一土工格室加筋地基;土工格室加筋垫层具有良好的筏板和应力均化作用,从而使碎石桩桩顶沉降量明显减小,加筋垫层对路堤荷载下桩端沉降的影响不大;路堤荷载下,碎石桩桩顶沉降量小于同平面桩间土沉降量,大于桩端沉降量,以致路堤荷载下复合地基中桩间土先于桩体发生破坏。

 References

[1]  LOW B K,TANG S K,CHOA V.Arching in Piled Embankment[J].Journal of Geotechnical Engineering,1994,120(11):1917-1938.
[2]  刘俊新,谢 强,文江泉,等.粉喷桩-土工格栅复合地基应力现场测试研究[J].岩土力学,2007,28(2):376-380.
[3]  CAO Wei-ping,CHEN Ren-peng,CHEN Yun-min.Experimental Investigation on Soil Arching in Piled Reinforced Embankments[J].Chinese Journal of Geotechnical Engineering,2007,29(3):436-441.
[4]  HELLOA B L,VILLARD P.Embankments Reinforced by Piles and Geosynthetics－Numerical and Experimental Studies Dealing with the Transfer of Load on the Soil Embankment[J].Engineering Geology,2009,106(1/2):78-91.
[5]  连 峰,龚晓南,崔诗才,等.桩-网复合地基承载性状现场试验研究[J].岩土力学,2009,30(4):1057-1062.
[6]  蔡德钩,闫宏业,叶阳升,等.桩网支承路基结构中土拱效应及网垫受力的模型试验研究[J].铁道学报,2011,33(11):85-92.
[7]  CAI De-gou,YAN Hong-ye,YE Yang-sheng,et al.Model Study on Arch Effect and Bedding Force of Geosynthetics Reinforced and Pile Supported Embankment[J].Journal of the China Railway Society,2011,33(11):85-92.
[8]  赵明华,张 玲,邹新军,等.土工格室-碎石桩双向增强复合地基研究进展[J].中国公路学报,2009,22(1):1-10.
[9]  ZHAO Ming-hua,ZHANG Ling,ZOU Xin-jun,et al.Research Progress in Two-direction Reinforced Composite Foundation Formed by Geocell Reinforced Mattress and Gravel Piles[J].China Journal of Highway and Transport,2009,22(1):1-10.
[10]  陈艳平,赵明华,陈昌富,等.土工格室碎石垫层-碎石桩复合地基相似模型试验[J].中国公路学报,2006,19(1):17-22.
[11]  CHEN Yan-ping,ZHAO Ming-hua,CHEN Chang-fu,et al.Similarity Model Test of Geocell Reinforced Gravel Mattress and Gravel Pile Composite Foundation[J].China Journal of Highway and Transport,2006,19(1):17-22.
[12]  LIU Jun-xin,XIE Qiang,WEN Jiang-quan,et al.Field Testing Study on Stresses of Dry Jet Mixing Combined with Geogrids[J].Rock and Soil Mechanics,2007,28(2):376-380.
[13]  曹卫平,陈仁朋,陈云敏.桩承式加筋路堤土拱效应试验研究[J].岩土工程学报,2007,29(3):436-441.
[14]  费 康,刘汉龙.桩承式加筋路堤的现场试验及数值分析[J].岩土力学,2009,30(4):1004-1012.
[15]  FEI Kang,LIU Han-long.Field Test Study and Numerical Analysis of a Geogrid-reinforced and Pile-supported Embankment[J].Rock and Soil Mechanics,2009,30(4):1004-1012.
[16]  LIAN Feng,GONG Xiao-nan,CUI Shi-cai,et al.Field Study of Bearing Behavior of Pile-net Composite Foundation[J].Rock and Soil Mechanics,2009,30(4):1057-1062.
[17]  王长丹,王炳龙,王 旭,等.湿陷性黄土桩网复合地基沉降控制离心模型试验[J].铁道学报,2011,33(4):84-92.
[18]  WANG Chang-dan,WANG Bing-long,WANG Xu,et al.Analysis on Settlement Controlling Effect of Pile-net Composite Foundation on Collapsible Loess by Centrifugal Model Tests[J].Journal of the China Railway Society,2011,33(4):84-92.

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