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基于圆孔扩张理论的静压楔形桩沉桩挤土效应研究

, PP. 24-30

Keywords: 道路工程,扩底楔形桩,圆孔扩张理论,沉桩阻力,挤土位移,超静孔隙水压

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Abstract:

?针对扩底楔形桩沉桩挤土效应特性方面的研究相对较少的状况,基于圆孔扩张理论,考虑扩底楔形桩的楔形角和扩大头等截面尺寸变化,建立扩底楔形桩施工中静压沉桩过程中沉桩阻力、桩周土体位移场以及超静孔隙水压力的理论计算方法。通过对楔形桩沉桩模型试验与理论分析的对比,分析了楔形角、沉桩深度、土体参数等因素对沉桩阻力、桩周挤土效应的影响规律。研究结果表明:所建立的理论计算方法能够较好的模拟楔形桩沉桩过程;沉桩完毕后侧摩阻力和桩端阻力之比在2~4之间,土体径向位移在距桩中心距离约为10倍桩径处递减为0。

References

[1]  LIU H L, NG C W W, FEI K.Performance of a Geogrid-reinforced and Pile-supported Highway Embankment over Soft Clay:Case Study[J].Journal of Geotechnical and Geoenvironmental Engineering, 2007, 133(12):1483-1493.
[2]  LIU H L, CHU J, DENG A.Use of Large-diameter, Cast-in Situ Concrete Pipe Piles for Embankment over Soft Clay[J].Canadian Geotechnical Journal, 2009, 46(8):915-927.
[3]  雷华阳, 李 肖, 陆培毅, 等.管桩挤土效应的现场试验和数值模拟[J].岩土力学, 2012, 33(4):1006-1012. LEI Hua-yang, LI Xiao, LU Pei-yi, et al.Field Test and Numerical Simulation of Squeezing Effect of Pipe Pile[J].Rock and Soil Mechanics, 2012, 33(4):1006-1012.
[4]  RYBNIKOV A M.Experimental Investigation of Bearing Capacity of Bored-cast-in-place Tapered Piles[J].Soil Mechanics and Foundation Engineering, 1990, 27(2):48-52.
[5]  ZIL'BERBERG S D, SHERSTNEV A D.Construction of Compaction Tapered Pile Foundation[J].Soil Mechanics and Foundation Engineering, 1990, 27(3):96-101.
[6]  周火垚, 施建勇.饱和软黏土中足尺静压桩挤土效应试验研究[J].岩土力学, 2009, 30(11):3291-3296. ZHOU Huo-yao, SHI Jian-yong.Test Research on Soil Compacting Effect of Full Scale Jacked-in Pile in Saturated Soft Clay[J].Rock and Soil Mechanics, 2009, 30(11):3291-3296.
[7]  张可能, 何 杰, 刘 杰, 等.静压楔形桩沉桩效应模型试验研究[J].中南大学学报:自然科学版, 2012, 43(2):638-643. ZHANG Ke-neng, HE Jie, LIU Jie, et al.Model Experimental Research on Piling Effects of Static Piling in Soft Clay Ground with Tapered Pile[J].Journal of Central South University:Science and Technology, 2012, 43(2):638-643.
[8]  SPRONKEN J T.Bearing Capacity of Tapered Piles[D].Alberta:University of Calgary, 1998.
[9]  周 健, 徐建平, 许朝阳.群桩挤土效应的数值模拟[J].同济大学学报:自然科学版, 2000, 28(6):721-725. ZHOU Jian, XU Jian-ping, XU Zhao-yang.Numerical Analysis of Heave and Lateral Movement Due to Pile Driving[J].Journal of Tongji University:Natural Science, 2000, 28(6):721-725.
[10]  罗战友, 龚晓南, 王建良, 等.静压桩挤土效应数值模拟及影响因素分析[J].浙江大学学报:工学版, 2005, 39(7):992-996. LUO Zhan-you, GONG Xiao-nan, WANG Jian-liang, et al.Numerical Simulation and Factor Analysis of Jacked Pile Compacting Effects[J].Journal of Zhejiang University:Engineering Science, 2005, 39(7):992-996.
[11]  李莲秀, 吴盛伟, 苏英平.桩端后压浆灌注桩承载力的可靠性研究[J].筑路机械与施工机械化, 2013, 30(1):70-72. LI Lian-xiu, WU Sheng-wei, SU Ying-ping.Study on Reliability of Bearing Capacity of Pile-end Post-grouting Bored Pile[J].Road Machinery & Construction Mechanization, 2013, 30(1):70-72.
[12]  宋金刚.公路桥梁钻孔灌注桩的施工质量控制[J].筑路机械与施工机械化, 2012, 29(6):63-64. SONG Jin-gang.Quality Control of Construction of Bored Pile for Highway Bridge[J].Road Machinery & Construction Mechanization, 2012, 29(6):63-64.
[13]  KODIKARA J K, MOORE I D.Axial Response of Tapered Piles in Cohesive Frictional Ground[J].Journal of Geotechnical Engineering, 1993, 119(4):675-693.
[14]  孔纲强, 杨 庆.一种扩底预应力锥形管桩及其施工方法:中国, 200810011854.4[P].2010-06-23. KONG Gang-qiang, YANG Qing.A Prestressed Belled Tapered Pipe Pile and Construction Method:China, 200810011854.4[P].2010-06-23.
[15]  孔纲强, 杨 庆, 年廷凯, 等.扩底楔形桩竖向抗压和负摩阻力特性研究[J].岩土力学, 2011, 32(2):503-509. KONG Gang-qiang, YANG Qing, NIAN Ting-kai, et al.Study of Characteristics of Compression Capacity and Negative Skin Friction for Belled Wedge Pile[J].Rock and Soil Mechanics, 2011, 32(2):503-509.
[16]  孔纲强.堆载条件下现浇扩底楔形群桩负摩阻力特性研究[J].岩土工程学报, 2011, 33(增1):364-368. KONG Gang-qiang.Performances of Negative Skin Friction of Belled Wedge Pile Group Under Surcharge Load[J].Chinese Journal of Geotechnical Engineering, 2011, 33(S1):364-368.
[17]  孔纲强, 周 航.扩底楔形桩沉桩挤土效应理论分析[J].中国公路学报, 2014, 27(2):9-16. KONG Gang-qiang, ZHOU Hang.Theoretical Analysis of Soil Compaction Effect of Belled Wedge Pile[J].China Journal of Highway and Transport, 2014, 27(2):9-16.
[18]  刘裕华, 陈征宙, 彭志军, 等.应用圆孔柱扩张理论对预制管桩的挤土效应分析[J].岩土力学, 2007, 28(10):2167-2172. LIU Yu-hua, CHEN Zheng-zhou, PENG Zhi-jun, et al.Analysis of Pile Driving Effect of Precast Tubular Pile Using Cylindrical Cavity Expansion Theory[J].Rock and Soil Mechanics, 2007, 28(10):2167-2172.

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