珠海西部中心城区大面积深厚软土工程特性研究

doi:10.13722/j.cnki.jrme.2018.1331

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (1205 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The physical and mechanical parameters of soft soils are the fundamental basis for the design of soft roadbed. However，the parameters of soft soils show strong regional characteristics due to various factors such as depositional environment. Based on a large amount of data from laboratory tests，vane shear tests and static penetration tests in the western central urban area of Zhuhai city(part A)，the engineering characteristics and parameters correlation of large-scale deep soft soil were analyzed. The results show that the water content of the soft soil in the central area of western Zhuhai is as high as 68%，which leads to a low shear strength and a high compressibility of the soft soil. The organic content ranging from 2.11% to 5.90% has little effect on the natural physical and mechanical properties of the soft soil. The strength indexes of CU-tests have a greater correlation with the water content than the strength indexes of direct shear tests，and the cohesion and the friction angle of triaxial shear tests are closer to the normal distribution. The shear strength indexes of the soft soil by laboratory experiments have no significant change with the depth. However，the shear strength of vane shear tests，and the hammer resistance and sidewall friction of static penetration tests firstly reduce and then increase with increasing the depth. The strength of the soft soil reaches the minimum at 2–4 m from the top of the soft soil layer and acceleratingly increases while the depth reaches about 6–9 m from the bottom of the soft soil layer. The in-situ tests can actually reflect the real situation of the soil strength than the laboratory experiments.

Key words： soil mechanics Zhuhai soft soil soft soil parameters statistical analysis spatial anisotropy

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	SONG Xugen1
	WANG Zhiyong1
	BAI Weiwei1
	WANG Zhe1
	XIE Shumeng1
	XIA Kaizong2

Cite this article:

SONG Xugen1,WANG Zhiyong1,BAI Weiwei1, et al. Study on engineering characteristics of large-scale deep soft soil in the central area of western Zhuhai[J]. , 2019, 38(7): 1434-1451.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2018.1331 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/I7/1434

[1]	沈珠江. 软土工程特性和软土地基设计[J]. 岩土工程学报，1998，20(1)：100-111.(SHEN Zhujiang. Engineering properties of soft soils and design of soft ground[J]. Chinese Journal of Geotechnical Engineering，1998，20(1)：100-111.(in Chinese))
[2]	TAVENAS F，LEROUEIL S. The behavior of embankments on clay foundations[J]. Canadian Geotechnical Journal，1980，17(2)：236-260.
[3]	XIA J，HUANG G L，YAN S B. Behaviour and engineering implications of recent floodplain soft soil along lower reaches of the Yangtze River in Western Nanjing，China[J]. Engineering Geology，2006，87(1)：48-59.
[4]	LIN D F，LIN K L，HUNG M J，et al. Sludge ash/hydrated lime on the geotechnical properties of soft soil[J]. Journal of Hazardous Materials，2007，145(1)：58-64.
[5]	龚晓南. 软土地区建筑地基工程事故原因分析及对策[C]// 中国土木工程学会年会. [S. l. ]：[s. n.]，2000：1 192-1 199.(GONG Xiaonan. Analysis of cause and Countermeasures for Accidents of Building Foundation Engineering in Soft Soil Area[C]// China Civil Engineering Society Annual Meeting. [S. l. ]：[s. n.]，2000：1 192- 1 199.(in Chinese))
[6]	林奕禧，艾康洪，黄良机. 珠海地区软土的工程特性及工程建设问题[J]. 岩石力学与工程学报，2006，25(增2)：3 372-3 376.(LIN Yixi，AI Kanghong，HUANG Liangji. Issues of engineering characteristics and engineering construction of soft clay in Zhuhai region[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.2)： 3 372-3 376.(in Chinese))
[7]	张玉成，杨光华，钟志辉，等. 软土基坑设计若干关键问题探讨及基坑设计实例应用分析[J]. 岩石力学与工程学报，2012，31(11)： 2 334-2 343.(ZHANG Yucheng，YANG Guanghua，ZHONG Zhihui，et al. Discussion on some key problems in soft soil foundation pit design and application analysis of design examples[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(11)：2 334-2 343.(in Chinese))
[8]	TANG Y Q，REN X，SONG S，et al. Study on land subsidence under different plot ratios through centrifuge model tests in soft-soil territory[J]. Environmental Earth Sciences，2012，66(7)：1 809-1 816.
[9]	孔令伟，吕海波，汪稔，等. 海口某海域软土工程特性的微观机制浅析[J]. 岩土力学，2002，23(1)：36-40.(KONG Lingwei，LU Haibo，WANG Ren，et al. Preliminary analysis of micro-mechanism of engineering properties for soft soil in a sea area of Haikou[J]. Rock and Soil Mechanics，2002，23(1)：36-40.(in Chinese))
[10]	孔令伟，吕海波，汪稔，等. 某防波堤下卧层软土的工程特性状态分析[J]. 岩土工程学报，2004，26(4)：454-458.(KONG Lingwei，LÜ Haibo，WANG Ren，et al. Analysis on engineering property of underlying soft soil stratum ofa breakwater[J]. Chinese Journal of Geotechnical Engineering，2004，26(4)：454-458.(in Chinese))
[11]	杨光华，李俊，贾恺，等. 改进的地基沉降计算的工程方法[J]. 岩石力学与工程学报，2017，36(增2)：4 229-4 234.(YANG Guanghua，LI Jun，JIA Kai，et al. Improved settlement calculation method for engineering practice[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(Supp.2)：4 229-4 234.(in Chinese))
[12]	杨光华，黄致兴，李志云，等. 考虑侧向变形的软土地基非线性沉降计算的简化法[J]. 岩土工程学报，2017，39(9)：1 697-1 704. (YANG Guanghua，HUANG Zhixing，LI Zhiyun，et al. Simplified method for nonlinear settlement calculation in soft soils considering lateral deformation[J]. Chinese Journal of Geotechnical Engineering，2017，39(9)：1 697-1 704.(in Chinese))
[13]	朱向荣，何耀辉，徐崇峰，等. 饱和软土单桩沉桩超孔隙水压力分析[J]. 岩石力学与工程学报，2005，24(增2)：5 740-5 744.(ZHU Xiangrong，HE Yaohui，XU Chongfeng，et al. Excess pore waterpressure caused by single driving in saturated soft soil[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(Supp.2)：5 740-5 744.(in Chinese))
[14]	吴长富，朱向荣，刘雪梅. 杭州地区典型土层抗剪强度指标的变异性研究[J]. 岩土工程学报，2005，27(1)：94-99.(WU Changfu，ZHU Xiangrong，LIU Xuemei. Typical stratums in Hangzhou area studies on variability of shear strength indexes for several typical stratums[J]. Chinese Journal of Geotechnical Engineering，2005，27(1)：94-99.(in Chinese))
[15]	张先伟，王常明，李军霞. 软土固结蠕变特性及机制研究[J]. 岩土力学，2011，32(12)：3 584-3 590.(ZHANG Xianwei，WANG Changming，LI Junxia. Experimental study of coupling behaviorsof consolidation-creep of soft clay and its mechanism[J]. Rock and Soil Mechanics，2011，32(12)：3 584-3 590.(in Chinese))
[16]	张先伟，王常明. 饱和软土的经验型蠕变模型[J]. 中南大学学报：自然科学版，2011，42(3)：791-796.(ZHANG Xianwei，WANG Changming. Empirical creep model for saturated soft soil[J]. Journal of Central South University：Science and Technology，2011，42(3)：791-796.(in Chinese))
[17]	徐东升，汪稔，孟庆山，等. 海相淤泥软土地基强夯置换砂桩试验分析[J]. 岩土力学，2009，30(12)：3 831-3 836.(XU Dongsheng，WANG Ren，MENG Qingshan，et al. Field tests analysis of dynamic consolidation and replacement sand pile on marine soft soil[J]. Rock and Soil Mechanics，2009，30(12)：3 831-3 836.(in Chinese))
[18]	雷华阳，卢海滨，王学超，等. 振动荷载作用下软土加速蠕变的微观机制研究[J]. 岩土力学，2017，38(2)：309-316.(LEI Huayang，LU Haibin，WANG Xuechao，et al. Research on microscopic mechanism of accelerated creep of soft clay under vibration loads[J]. Rock and Soil Mechanics，2017，38(2)：309-316.(in Chinese))
[19]	雷华阳，贾亚芳，李肖. 滨海软土非线性蠕变特性的试验研究[J]. 岩石力学与工程学报，2013，32(增1)：2 806-2 816.(LEI Huayang，JIA Yafang，LI Xiao. Experimental study of nonlinear creep property of soft soil in littoral area[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.1)：2 806-2 816.(in Chinese))
[20]	杨晓杰，刘冬明，王孝存. 深厚软弱土层沉降变形规律堆载试验研究[J]. 岩石力学与工程学报，2017，36(增2)：4 259-4 266.(YANG Xiaojie，LIU Dongming，WANG Xiaocun. Loading tests study on settlement deformation law of deep soft soil layer[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(Supp.2)：4 259- 4 266.(in Chinese))
[21]	陈成，周正明，张先伟，等. 循环荷载作用下泥炭质土动力累积特性试验研究[J]. 岩石力学与工程学报，2017，36(5)：1 247- 1 255.(CHEN Cheng，ZHOU Zhengming，ZHANG Xianwei，et al. Experimental study on accumulative behaviour of peaty soil under cyclic loading.[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(5)：1 247-1 255.(in Chinese))
[22]	QUIGLEY R M. Geology，mineralogy，and geochemistry of Canadian soft soils：a geotec[J]. Canadian Geotechnical Journal，1980，17(2)：261-285.
[23]	ROY D，ROBINSON K E. Surface settlements at a soft soil site due to bedrock dewatering[J]. Engineering Geology，2009，107(3)：109-117.
[24]	WHEELER S J，NÄÄTÄNEN A，KARSTUNEN M，et al. An anisotropic elastoplastic model for soft clays[J]. Canadian Geotechnical Journal，2003，40(2)：403-418.
[25]	王婧. 珠海软土固结性质的宏微观试验及机理分析[博士学位论文][D]. 广州：华南理工大学，2013.(WANG Jing. Macroscopic and microscopic experimental study on consolidation properties of zhuhai soft soil with mechanism analysis[Ph. D. Thesis][D]. Guangzhou：South China University of Technology，2013.(in Chinese))
[26]	霍海峰，齐麟，雷华阳，等. 天津软黏土触变性的思考与试验研究[J]. 岩石力学与工程学报，2016，35(3)：631-637.(HUO Haifeng，QI Lin，LEI Huayang，et al，Analysis and experimental study on thixotropy of Tianjin soft clay[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(3)：631-637.(in Chinese))
[27]	孙红，葛修润，牛富俊，等. 上海粉质黏土的三轴CT实时细观试验[J]. 岩石力学与工程学报，2005，24(24)：4 559-4 564.(SUN Hong，GE Xiurun，NIU Fujun，et al. Real-time CT meso-testsing on Shanghai silty clay subjected to triaxial loading[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(24)：4 559-4 564.(in Chinese))
[28]	莫海鸿，单毅，马灏，等. 软土动剪切模量与微观孔隙结构试验研究[J]. 岩石力学与工程学报，2016，35(7)：1 445-1 451.(MO Haihong，SHAN Yi1，MA Hao，et al. Experimental study of dynamic shear moduli and microscopic-pore structure of soft clay[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(7)：1 445- 1 451.(in Chinese))
[29]	尹利华，王晓谋，张留俊. 天津软土土性指标概率分布统计分析[J]. 岩土力学，2010，31(增2)：462-469.(YIN Lihua，WANG Xiaomou，ZHANG Liujun. Probabilistical distribution statistical analysis of Tianjin soft soil indices[J]. Rock and Soil Mechanics，2010，31(Supp.2)：462-469.(in Chinese))
[30]	屈若枫，徐光黎，王金峰，等. 武汉地区典型软土物理力学指标间的相关性研究[J]. 岩土工程学报，2014，36(增2)：113-119.(QU Ruofeng，XU Guangli，WANG Jinfeng，et al. Correlations of physical and mechanical properties of typical soft soils in Wuhan[J]. Chinese Journal of Geotechnical Engineering，2014，36(Supp.2)：113-119.(in Chinese))
[31]	珠海市建设工程质量监督检测站. 珠海市软土分布区工程建设指引[M]. 北京：中国建筑工业出版社，2010：15-16.(Zhuhai Construction Engineering Quality Supervision and Inspection Station. Guidelines of engineering construction on soft area in Zhuhai[M]. Beijing：China Architecture and Building Press，2010：15-16.(in Chinese))
[32]	盛骤，谢式千，潘承毅. 概率论与数理统计[M]. 4版. 北京：高等教育出版社，2008：1-20.(SHENG Ju，XIE Shiqian，PAN Chengyi. Probability theory and mathematical statistics[M]. 4th. ed. Beijing：Higher education press，2008：1-20.(in Chinese))
[33]	KVAM P H，VIDAKOVIC B. Nonparametric statistics with applications to science and engineering[M]. Hoboken：John Wiley and Sons，2007：105-115.