排水板复合框架自钻胎串式锚杆支护结构的工作机制分析

doi:10.13722/j.cnki.jrme.2016.1604

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Abstract In order to solve the problems of draining and supporting for deep foundation pit in soft soil area，a new type of supporting structure with vertical sheet drains and self-drilling tire tandem anchors was put forward，and the working mechanism was studied in detail. The bearing capacity of the self-drilling tire tandem anchor under pore ware pressure was derived based on the cylindrical cavity expansion theory. The effect of prefabricated vertical sheet drain were analyzed and its influence on the uplift capacity of self-drilling tire tandem anchor was discussed with the finite element software ADINA. The bearing capacity value from simulation was compared with the theoretical one. The results show that the vertical sheet drains have a good dewatering effect，which can dissipate the pore pressure in the soil quickly and effectively. The axial force of anchors and the horizontal displacement of frame columns are significantly reduced with the prefabricated vertical sheet drains. The excessive pore water pressure caused by tire expansion can be dissipated immediately with the prefabricated vertical sheet drains. Furthermore，with the dissipation of pore water pressure，the displacement and strain of the soil along the axial direction are reduced，and the uplift capacity of anchors are improved. The theoretical uplift capacity is basically accordance with that from simulation，which proves the correctness of bearing capacity formula.

Key words： foundation engineering prefabricated vertical drain composite grillage self-drilling tire tandem anchor numerical analysis drainage consolidation pore water pressure uplift capacity

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	Articles by authors
	DONG Jianhua1
	2
	YUAN Fanglong1
	2
	3
	DONG Xuguang1
	2
	PEI Meijuan1
	2

Cite this article:

DONG Jianhua1,2,YUAN Fanglong1, et al. Mechanism of composite grillage support with self-drilling anchors of tire tandems and vertical sheet drains[J]. , 2017, 36(11): 2826-2838.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.1604 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/I11/2826

[1]	贺若兰，张平，李宁. 拉拔工况下全长黏结锚杆工作机制[J]. 中南大学学报：自然科学版，2006，37(2)：401-407.(HE Ruolan，ZHANG Ping，LI Ning. Working mechanism of fully grouted bolt in pull-out working state[J]. Journal of Central South University： Science and Technology，2006，37(2)：401-407.(in Chinese)) " target="_blank">
[2]	曾庆义，杨晓阳，杨昌亚. 扩大头锚杆的力学机制和计算方法[J]. 岩土力学，2010，31(5)：1 359-1 367.(ZENG Qingyi，YANG Xiaoyang，YANG Changya. Mechanical mechanism and calculation method of bit expanded anchor rods[J]. Rock and Soil Mechanics，2010，31(5)：1 359-1 367.(in Chinese))
[3]	刘钟，郭刚，张义，等. 囊式扩体锚杆施工技术与工程应用[J]. 岩土工程学报，2014，36(2)：205-211.(LIU Zhong，GUO Gang，ZHANG Yi，et al. Construction technology and engineering applications of capsule-type under-reamed ground anchor[J]. Chinese Journal of Geotechnical Engineering，2014，36(2)：205-211.(in Chinese)) " target="_blank">
[4]	陈浩华，黄铭，葛修润. 端头扩大型土锚的新发展—船锚式注浆张开型土锚[J]. 岩土力学，2006，27(10)：1 819-1 822.(CHEN Haohua，HUANG Ming，GE Xiurun. New development of under reamed anchor——blade-under reamed grouted anchor[J]. Rock and Soil Mechanics，2006，27(10)：1 819-1 822.(in Chinese)) " target="_blank">
[5]	彭文祥，徐松山，曹佳文. 等. 充气锚杆力学性能的非线性有限元分析[J]. 岩石力学与工程学报，2012，31(增1)：3 104-3 109.(PENG Wengxiang，XU Songshan，CAO Jiawen，et al. Nonlinear finite element analysis of mechanical properties of inflatable anchors[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.1)：3 104-3 109.(in Chinese))
[6]	李允忠，汪稔. 基坑开挖孔隙水压力变化规律实验研究[J]. 岩土力学，2002，23(6)：819-824.(LI Yunzhong，WANG Ren. Experimental research on law of pore water pressure during foundation pit excavation[J]. Rock and Soil Mechanics，2002，23(6)：819-824.(in Chinese))
[7]	吴昌瑜，李思慎，谢红. 深基坑开挖中的降水设计问题[J]. 岩土工程学报，1999，21(3)：348-350.(WU Changyu，LI Sishen，XIE Hong. Dewatering and drainage design for deep foundation pit excavation[J]. Chinese Journal of Geotechnical Engineering，1999，21(3)：348-350.(in Chinese))
[8]	胡昕，洪宝宁，杜强，等. 含水率对煤系土抗剪强度的影响[J]. 岩土力学，2009，30(8)：2 291-2 294.(HU Xin，HONG Baoning，DU Qiang，et al. Influence of water contents on shear strength of coal-bearing soil[J]. Rock and Soil Mechanics，2009，30(8)：2 291- 2 294.(in Chinese))
[9]	周红波，卢剑华，蒋建军. 动力排水固结法加固浦东机场促淤地基实验研究[J]. 岩土力学，2005，26(11)：1 779-1 784.(ZHOU Hongbo，LU Jianhua，JIANG Jianjun. Test study on reclaimed land of Pudong Airport improved with dynamic and drain consolidation method[J]. Rock and Soil Mechanics，2005，26(11)：1 779-1 784.(in Chinese))
[10]	刘金龙，栾茂田，汪东林，等. 土工织物与塑料排水板联合处理软基的效果分析[J]. 岩土力学，2009，30(6)：1 726-1 730.(LIU Jinlong，LUAN Maotian，WANG Donglin，et al. Effect of disposing soft soil foundation using geotextile and plastic drainage plate[J]. Rock and Soil Mechanics，2009，30(6)：1 726-1 730.(in Chinese))
[11]	姜弘，沈水龙，蔡丰锡，等. 塑料排水板处理的软土地基的分析[J]. 岩土力学，2004，25(增)：437-440.(JIANG Hong，SHENG Shuilong，CAI Fengxi，et al. Analytical method of PVD-improved subsoil[J]. Rock and Soil Mechanics，2004，25(Supp.)：437-440.(in Chinese)) " target="_blank">
[12]	董建华，朱彦鹏. 兰州某深基坑三维有限元分析[J]. 岩土工程学报，2012，34(增1)：93-97.(DONG Jianhua，ZHU Yanpeng. 3D finite element analysis of a deep excavation in Lanzhou area[J]. Chinese Journal of Geotechnical Engineering，2012，34(Supp.1)：93-97.(in Chinese))
[13]	张向东，张淑坤，杨奎清. 基于ADINA的边坡开挖变形分析[J]. 岩土力学，2006，27(增2)：1 153-1 155.(ZHANG Xiangdong，ZHANG Shukun，YANG Kuiqing. Analysis of distortion of slope excavation based on ADINA[J]. Rock and Soil Mechanics，2006，27(Supp.2)： 1 153-1 155.(in Chinese)) " target="_blank">
[14]	刘文平，赵燕明，郑颖人. 岩质边坡开挖应力与变形的有限元模拟[J]. 后勤工程学院学报，2004：(2)：45-48.(LIU Wenping，ZHAO Yanming，ZHENG Yingren. The stress and deformation of simulation by FEM for the excavation of rock slope[J]. Journal of Logistical Engineering University，2004：(2)：45-48.(in Chinese)) " target="_blank">
[15]	郑大同. 地基极限承载力的计算[M]. 北京：中国建筑工业出版社， 1979：66-73.(ZHENG Datong. Calculation of ultimate bearing capacity of foundation soil[M]. Beijing：China Architecture and Building Press，1979：66-73.(in Chinese)) " target="_blank">
[16]	姚笑青，胡中雄. 饱和软土中沉桩引起的孔隙水压力估算[J]. 岩土力学，1997，18(4)：30-35.(YAO Xiaoqing，HU Zhongxiong. Estimating method for excess pore-water pressure developed during pile driving[J]. Rock and Soil Mechanics，1997，18(4)：30-35.(in Chinese))
[17]	高子坤，施建勇. 饱和黏土中沉桩挤土形成超孔压分布理论解答研究[J]. 岩土工程学报，2013，35(6)：1 109-1 114.(GAO Zikun，SHI Jianyong. Theoretical solutions distribution of excess pore pressure due to pile jacking in saturated clay[J]. Chinese Journal of Geotechnical Engineering，2013，35(6)：1 109-1 114.(in Chinese))
[18]	唐世栋，何连升，傅纵. 饱和地基中单桩施工引起的超孔隙水压力[J]. 岩土力学，2002，23(6)：725-731.(TANG Shidong，HE Liansheng，FU Zong. Excess pore water pressure caused by an installing pile in soft foundation[J]. Rock and Soil Mechanics，2002，23(6)：725-731.(in Chinese))
[19]	HNKEL J，WADE N H. Plane strain tests on a saturated remodeled clay[J]. Journal of the Soil Mechanics and Foundations Division， 1966，92(6)：67-80. " target="_blank">
[20]	叶观宝，汤竞，徐超，等. 利用孔压静力触探试验估算沉桩过程中产生的超孔隙水压力[J]. 工程力学，2005，22(增1)：194-198.(YE Guanbao，TANG Jing，XU Chao，et al. Estimation of excess pore water pressure during pile installation piezocone test[J]. Engineering Mechanics，2005，22(Supp.1)：194-198.(in Chinese))
[21]	苗永红，陈邦. 沉桩引起的初始超孔隙水压力理论解的修正[J]. 济南大学学报，2005，29(3)：185-189.(MIAO Yonghong，CHEN Bang. Initial excess pore water pressure caused by pile driving the theoretical solution of correction[J]. Journal of University of Jinan，2005，29(3)：185-189.(in Chinese))
[22]	李雄，刘金砺. 饱和软土中预制桩承载力时效的研究[J]. 岩土工程学报，1992，14(7)：9-16.(LI Xiong，LIU Jinli. Time effect of bearing capacity of driven pile in saturated soft soil[J]. Chinese Journal of Geotechnical Engineering，1992，14(7)：9-16.(in Chinese))
[23]	HANSBO S. Design aspects of vertical drains and lime column installations[C]// Proceedings of the 9th Southeast Asian Geotech.- Conference. Bangkok：Southeast Asian Geotechnical Society，1987：1-12. " target="_blank">
[24]	赵明华. 土力学与基础工程[M]. 武汉：武汉理工出版社，2009：246-248.(ZHAO Minghua. Soil mechanics and foundation engineering[M]. Wuhan：Wuhan University of Technology Press，2009：246-248.(in Chinese)) " target="_blank">
[25]	齐永正，赵维炳. 排水固结加固软基强度增长理论研究[J]. 水利水运工程学报，2008，(2)：78-83.(QI Yongzheng，ZHAO Weibing. Study on theory of shear strength increment of soil body by draining consolidation for improving soft clay[J]. Hydro-science and Engineering，2008，(2)：78-83.(in Chinese))
[26]	龚国栋，张红薇. 扩体型锚杆受力与计算分析[J]. 中国高新技术企业，2011，3(1)：21-22.(GONG Guodong，ZHANG Hongwei. The stress analysis and calculation of expanding size anchor[J]. China's High-Tech Enterprises，2011，3(1)：21-22.(in Chinese)) " target="_blank">
[27]	NEWSON T A，SMITH F W，BRUNNING P. An experimental study of inflatable off shore anchors in soft clays[C]// Proceedings of ICOF2003，BGA Conference on Foundations. Dundee：[s. n.]，2003：695-704.(in Chinese)) " target="_blank">
[28]	SKEMPTON A W. The bearing capacity of clay[M]. London：Thomas Telford Publishing，1984：50-59. " target="_blank">