基于薄板理论的刚性桩网复合地基桩土应力比计算

doi:10.13722/j.cnki.jrme.2016.1472

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Abstract The pile-soil stress ratio is an important indicator which reflects the characteristic of composite foundation with rigid pile-net. The pile-soil stress ratio of the composite foundation with rigid pile-net under the embankment loads was studied based on the load transfer characteristics. The reinforced area was considered as a whole body according to the stress and displacement continuity condition of cushion-piles-soil. The stress and deformation of reinforced cushion were simulated with the large deflection theory of thin plate. The real boundary conditions of the reinforced cushion were considered. The pile-soil stress ratio was solved with the assumption that the four corners were simple supported and the rest were free. The method for calculating the pile-soil stress ratio under normal conditions considering the effect of pile-soil interaction was deduced through the principle of energy. The method was validated through the indoor full scale tests. The influences of the modulus of mattress layer，pile spacing，soil bed coefficient and pile diameter on pile-soil stress ratio were systematically analyzed. The analytical solutions agree with the measured data.

Key words： foundation engineering rigid pile-net composite foundation reinforced cushion thin plate theory pile-soil stress ratio pile-soil interaction

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	Articles by authors
	YAN Shuwang1
	LANG Ruiqing1
	SUN Liqiang1
	CHEN Jing1
	JIA Zhaolin1
	2
	3

Cite this article:

YAN Shuwang1,LANG Ruiqing1,SUN Liqiang1, et al. Calculation of pile-soil stress ratio in composite foundation with rigid pile-net based on plate theory[J]. , 2017, 36(8): 2051-2060.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2016.1472 OR http://www.rockmech.org/EN/Y2017/V36/I8/2051

[2]	郑俊杰，张军，马强，等. 双向增强体复合地基桩土应力比三维分析[J]. 华中科技大学学报：自然科学版，2010，38(2)：83-86.(ZHENG Junjie，ZHANG Jun，MA Qiang，et al. Three dimensional analysis of pile-earth stress ratio of biaxial reinforcement composite foundation[J]. Journal of Huazhong University of Science and Technology：Natural Science，2010，38(2)：83-86.(in Chinese))
[6]	赵明华，刘猛，马缤辉，等. 基于弹性地基板理论的桩网复合地基桩土应力比及沉降计算[J]. 中南大学学报：自然科学版，2016，47(6)：2 007-2 014.(ZHAO Minghua，LIU Meng，MA Binhui，et al. Calculation of pile-soil stress ratio and settlement of pile-net composite foundation based on elastic foundation plate[J]. Journal of Central South University：Science and Technology，2016，47(6)：2 007-2 014.(in Chinese))
[11]	池跃君，沈伟，宋二祥. 桩体复合地基桩、土相互作用的解析法[J]. 岩土力学，2002，23(5)：546-550.(CHI Yuejun，SHEN Wei，SONG Erxiang. Analytical method for calculating pile-soil-cushion interaction of composite grounds with piles[J]. Rock and Soil Mechanics，2002，23(5)：546-550.(in Chinese))
[17]	谭慧明，刘芝平，丁选明，等. 加筋褥垫层对PCC桩复合地基承载特性影响足尺试验研究[J]. 岩石力学与工程学报，2014，33(12)：2 531-2 538.(TAN Huiming，LIU Zhiping，DING Xuanming，et al. Full scale model test on effect of reinforced cushion on load transmission behavior of composite foundation of PCC piles[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(12)：2 531-2 538.(in Chinese))
[15]	刘汉龙，费康，周云东，等. 现浇混凝土薄壁管桩内摩阻力的数值分析[J]. 岩土力学，2004，25(增2)：211-216.(LIU Hanlong，FEI Kang，ZHOU Yundong，et al. Numerical simulation of inner frictional resistance of cast-in-situ concrete thin-wall pipe pile[J]. Rock and Soil Mechanics，2004，25(Supp.2)：211-216.(in Chinese))
[10]	赵明华，何腊平，张玲. 基于荷载传递法的CFG桩复合地基沉降计算[J]. 岩土力学，2010，31(3)：839-844.(ZHAO Minghua，HE Laping，ZHANG Ling. Settlement calculation of CFG pile composite foundation based on load transfer method[J]. Rock and Soil Mechanics，2010，31(3)：839-844.(in Chinese))
[4]	张军，郑俊杰，马强. 桩承式加筋路堤荷载分担比计算方法[J]. 浙江大学学报：工学版，2010，44(10)：1 950- 1 954.(ZHANG Jun，ZHENG Junjie，MA Qiang. Calculation for pile efficacy of geosynthetic-reinforced and pile-supported embankment[J]. Journal of Zhejiang University：Engineering Science，2010，44(10)： 1 950-1 954.(in Chinese))
[7]	赵明华，刘猛，龙军，等. 双向增强复合地基土工格室加筋体变形分析[J]. 中国公路学报，2014，27(5)：97-104.(ZHAO Minghua，LIU Meng，LONG Jun，et al. Deformation analysis of geocell-reinforcement in bidirectional reinforced composite foundation[J]. China Journal of Highway and Transport，2014，27(5)：97-104.(in Chinese))
[13]	RANDOLPH M F，WROTH C P，An analysis of the vertical deformation of pile groups[J]. Geotechnique，1979，29(4)：423-439. " target="_blank">
[8]	竺明星，龚维明，徐国平，等. 大面积堆载作用下轴向受力隔离桩的承载机制分析[J]. 岩石力学与工程学报，2014，33(2)：421-432.(ZHU Mingxing，GONG Weiming，XU Guoping，et al. Analysis of bearing mechanism of axially loaded isolation piles under large-scale surcharge loading[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(2)：421-432.(in Chinese))
[14]	武崇福，郭维超，李雨浓，等. 考虑负摩阻力的刚性桩复合地基中性面深度及桩土应力比计算[J]. 岩土工程学报，2016，38(2)：278-287.(WU Chongfu，GUO Weichao，LI Yunong，et al. Calculation of neutral surface depth and pile-soil stress ratio of rigid pile composite foundation considering influence of negative friction[J]. Chinese Journal of Geotechnical Engineering，2016，38(2)：278-287.(in Chinese))
[9]	张彦朋，吴跃东，雍金兵，等.路堤荷载下塑料套管桩复合地基承载特性研究[J]. 岩土工程学报，2010，32(增2)：142-145.(ZHANG Yanpeng，WU Yuedong，YONG Jinbing，et al. Bearing behaviors of TC pile composite foundation under load of embankment[J]. Chinese Journal of Geotechnical Engineering，2010，32(Supp.2)：142-145. (in Chinese))
[16]	周建，刘卫未. 大直径现浇薄壁筒桩单桩内摩阻力研究及竖向承载力模拟[J]. 公路交通科技，2006，23(7)：27-30.(ZHOU Jian，LIU Weiwei. Study on inner friction and vertical bearing capacity simulation of single thin-wall cast-in-situ tubular pile[J]. Journal of Highway and Transportation Research and Development，2006，23(7)：27-30.(in Chinese))
[3]	杨宇. 双向增强体复合地基承载性能研究[博士学位论文][D].长沙：湖南大学，2006.(YANG Yu. Research on bearing capability of double direction reinforced composite ground[Ph. D. Thesis][D]. Hunan：Hunan University，2006.(in Chinese)) " target="_blank">
[12]	赵明华，贺炜，曹文贵. 基桩负摩阻力计算方法初探[J]. 岩土力学，2004，25(9)：1 442-1 446.(ZHAO Minghua，HE Wei，CAO Wengui. Study on calculation of negative skin friction resistance on piles[J]. Rock and Soil Mechanics，2004，25(9)：1 442-1 446.(in Chinese))
[1]	饶为国，江辉煌，侯庆华. 桩-网复合地基工后沉降的薄板理论解[J]. 水利学报，2002，(4)：23-27.(RAO Weiguo，JIANG Huihuang，HOU Qinghua. Deformation of sheet plate due to residual settlement of pile-net composite foundation[J]. Journal of Hydraulic Engineering，2002，(4)：23-27.(in Chinese))
[5]	张军，郑俊杰，马强. 路堤荷载下双向增强体复合地基受力机制分析[J]. 岩土工程学报，2010，32(9)：1 392-1 398.(ZHANG Jun，ZHENG Junjie，MA Qiang. Mechanical performance of biaxial reinforcement composite foundation under embankment loads[J]. Chinese Journal of Geotechnical Engineering，2010，32(9)：1 392- 1 398.(in Chinese))