原状海洋沉积土的残余结构性和压缩模型

doi:10.3724/1000-6915.jrme.2024.0490

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1063 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要原状海洋沉积土的非线性压缩变形特性跟结构性演变有关，基于残余结构性的力学概念建立新的压缩模型。该模型采用单一的数学形式，包含有限的且物理意义明确的材料参数，适用于不同类型结构性岩土材料。为了验证该模型的有效性，首先比较不同方法对Grabina方解石等向压缩试验结果的拟合效果，结果表明本文模型能够较为准确地描述其非线性压缩曲线，随后采用离散单元法模拟原状海洋沉积土的一维压缩过程，通过胶结键的破坏演化规律从细观层面验证残余结构性力学概念的合理性，最后分析屈服应力、残余结构性孔隙比等材料参数对模型计算结果的影响规律。在此基础上，采用本文提出的结构性压缩模型对国内不同海域原状沉积土、水泥土、含水合物能源土和墨西哥城市原状土等岩土材料的压缩试验结果进行计算，均取得良好的拟合效果，并且为认识土的结构性演变提供新的理论视角。研究结果表明：结构性岩土材料原状样的压缩性会随着荷载增大迅速增大，压缩曲线会趋近于重塑样，但仍可能保留部分的残余结构性；结合原状样和重塑样的等向压缩试验结果可以确定本文模型的材料参数，模型计算结果几乎与试验结构保持一致。本文模型可用于海上人工岛机场规划、设计和建设等工程实践中的基础沉降控制，不过该模型尚不能考虑剪切变形对原状海洋沉积土的结构性破坏规律的影响，需要进一步拓展。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	李海潮1
	张宇辉1
	贺佐跃2
	李欣宇1
	李涛1

关键词 ：土力学, 原状海洋沉积土, 残余结构性, 参考极限压缩曲线, 结构性极限压缩曲线, 压缩变形特性

Abstract：The paper presents a novel structured compression model for marine sediments based on the concept of residual structure, which accounts for non-linear deformation behavior. The proposed model features a straightforward formula that includes a few parameters with clear physical meanings. The model’s performance is validated by fitting it to the oedometer test data of Gravina calcarenite. Subsequently, we conducted a series of one-dimensional numerical compression tests using the discrete element method to investigate the impact of residual structure on the compressive behavior of marine sediment samples. Post-testing, some cementation bonds remain intact, corresponding to the residual structure. Additionally, we analyzed how model parameters influence the evolution of structural degradation. The model’s predictions were compared with compression test data from various types of structured soils, including in-situ sedimentary soils, cemented soils, hydrate-bearing soils and urban soils from Mexico. The results demonstrate a strong correlation and offer new theoretical insights into the structural degradation of soils. Notably, the compressibility of structured soil samples increases rapidly with increasing load, with the compression curve approaching that of remolded samples. This characteristic may be influenced by the residual structure, and the proposed model effectively captures this behavior. The current study contributes to the planning, design, and construction of offshore artificial islands and airports by enabling accurate calculations of foundation settlement. However, a primary limitation of the proposed model is its inability to account for the effects of shear deformation on structural degradation, which necessitates further refinement.

Key words： soil mechanics')" href="#">

soil mechanics undistributed marine sediment residual structure concept reference limited compression curve structured limited compression curve；compression deformation behavior

引用本文:

李海潮1，张宇辉1，贺佐跃2，李欣宇1，李涛1. 原状海洋沉积土的残余结构性和压缩模型[J]. 岩石力学与工程学报, 2025, 44(S2): 336-346.
LI Haichao1, ZHANG Yuhui1, HE Zuoyue2, LI Xinyu1, LI Tao1. Residual structural and compression model of undistributed marine sediment. , 2025, 44(S2): 336-346.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.3724/1000-6915.jrme.2024.0490 或 https://rockmech.whrsm.ac.cn/CN/Y2025/V44/IS2/336

[1] 孔令伟，吕海波，汪稔，等. 湛江海域结构性海洋士的工程特性及其微观机制[J]. 水利学报，2002，(9)：82–88.(KONG Lingwei，LYU Haibo，WANG Ren，et al. Engineering properties and micro-mechanism of structural marine soil in Zhanjiang sea area[J]. Journal of Hydraulic Engineering，2002，(9)：82–88.(in Chinese))
[2] 任玉宾，王胤，杨庆. 典型深海软黏土全流动循环软化特性与微观结构探究[J]. 岩土工程学报，2019，41(8)：1 562–1 568.(REN Yubin，WANG Yin，YANG Qing. Full-flow cyclic degradation and micro-structure of representative deep-sea soft clay[J]. Chinese Journal of Geotechnical Engineering，2019，41(8)：1 562–1 568.(in Chinese))
[3] NIAN T K，JIAO H B，FAN N，et al. Microstructure analysis on the dynamic behavior of marine clay in the South China Sea[J]. Marine Georesources and Geotechnology，2019，38(3)：349–362.
[4] SALEM T N，ELKHAWAS N M，ELNADY A M. Behavior of offshore pile in calcareous sand—case study[J]. Journal of Marine Science and Engineering，2021，9(8)：839.
[5] LUO T，HAN T，BN M，et al. Strength and deformation behaviors of methane hydrate-bearing marine sediments in the South China Sea during depressurization[J]. Energy and Fuels，2021，35(18)：14 569–14 579.
[6] PHUONG N N，FAUVELLE V，GRENZ C，et al. Highlights from a review of microplastics in marine sediments[J]. Science of the Total Environment，2021，777：146225.
[7] HATTAB M，HAMMAD T，FLEUREAU J M，et al. Behaviour of a sensitive marine sediment：microstructural investigation[J]. Géotechnique，2013，63(1)：71–84.
[8] 刘文化，杨庆，孔纲强，等. 海洋沉积物力学特性及其弹塑性本构模型[J]. 岩土工程学报，2022，44(10)：1 837–1 845.(LIU Wenhua，YANG Qing，KONG Gangqiang，et al. Mechanical properties and elastoplastic constitutive model of undisturbed marine sediment[J]. Chinese Journal of Geotechnical Engineering，2022，44(10)：1 837–1 845.(in Chinese))
[9] LIU M D，CARTER J P. A structured Cam Clay model[J]. Canadian Geotechnical Journal，2002，39(6)：1 313–1 332.
[10] CHEN B，SUN D，YUNSHI H. Experimental study on strength characteristics and microscopic mechanism of marine soft clays[J]. Marine Georesources and Geotechnology，2020，38(5)：570–582.
[11] NGUYEN L D，FATAHI B，KHABBAZ H. Development of a constitutive model to predict the behavior of cement-treated clay during cementation degradation：C3 model[J]. International Journal of Geomechanics，2017，17(7)：04017010.
[12] 张升，李海潮，滕继东，等. 考虑围压依存性的软岩结构性下加载面模型[J]. 岩土工程学报，2016，38(7)：1 269–1 276.(ZHANG Sheng，LI Haichao，TENG Jidong，et al. Structured subloading yield surface model for soft rock considering confining pressure[J]. Chinese Journal of Geotechnical Engineering，2016，38(7)：1 269–1 276.(in Chinese))
[13] YANG C，CARTER J P，SHENG D. Description of compression behaviour of structured soils and its application[J]. Canadian Geotechnical Journal，2014，51(8)：921–933.
[14] 谢定义，齐吉琳. 土结构性及其定量化参数研究的新途径[J]. 岩土工程学报，1999，21(6)：651–656.(XIE Dingyi，QI Jilin. Soil structure characteristics and new approach in research on its quantitative parameter[J]. Chinese Journal of Geotechnical Engineering，1999，21(6)：651–656.(in Chinese))
[15] 祝恩阳，姚仰平. 结构性土 UH 模型[J]. 岩土力学，2015，36(11)：3 101–3 110.(ZHU Enyang，YAO Yangping. A UH constitutive model for structured soils[J]. Rock and Soil Mechanics，2015，36(11)：3 101–3 110.(in Chinese))
[16] 李吴刚，杨庆，刘文化，等. 黏土的结构性定量化表征及其弹塑性本构模型研究[J]. 岩土工程学报，2022，44(4)：678–686.(LI Wugang，YANG Qing，LIU Wenhua，et al. Structured quantitative characterization and elastoplastic constitutive model of clay[J]. Chinese Journal of Geotechnical Engineering，2022，44(4)：678–686.(in Chinese))
[17] 张鑫蕊，孔纲强，杨庆. 温度应力路径对原状海洋土强度特性影响研究[J]. 岩土工程学报，2024，46(2)：357–365.(ZHANG Xinrui，KONG Gangqiang，YANG Qing. Influences of temperature stress path on strength characteristics of undisturbed marine sediments[J]. Chinese Journal of Geotechnical Engineering，2024，46(2)：357–365.(in Chinese))
[18] 周正龙，丁芷萱，刘杰，等. 南海海域饱和粉土动剪切模量和阻尼比试验研究[J]. 土木工程学报，2022，55(增1)：227–233.(ZHOU Zhenglong，DING Zhixuan，LIU Jie，et al. Experimental study on dynamic shear modulus and damping ratio characteristics of saturated silt in South China Sea[J]. China Civil Engineering Journal，2022，55(Supp.1)：227–233.(in Chinese))
[19] 张岩，陈国兴，赵凯，等. 海洋土动剪切模量比和阻尼比预测不确定性特性[J]. 工程力学，2023，40(5)：161–171.(ZHANG Yan，CHEN Guoxing，ZHAO Kai，et al. Uncertainties of shear modulus reduction and damping ration curves of marine soils[J]. Engineering Mechanics，2023，40(5)：161–171.(in Chinese))
[20] 袁宇，刘润，付登锋，等. 结构性海洋黏土损伤模型的二次开发及应用[J]. 岩土力学，2022，43(7)：1 989–2 002.(YUAN Yu，LIU Run，FU Dengfeng，et al. Secondary development and application of structural marine clay damage model[J]. Rock and Soil Mechanics，2022，43(7)：1 989–2 002.(in Chinese))
[21] JAVANMARDI Y，IMAM S M R，PASTOR M，et al. A reference state curve to define the state of soils over a wide range of pressures and densities[J]. Géotechnique，2018，68(2)：95–106.
[22] YAO Y P，LIU L，LUO T，et al. Unified hardening(UH) model for clays and sands[J]. Computers and Geotechnics，2019：110 326–110 343.
[23] YAMAMURO J A，BOPP P A，LADE P V. One-dimensional compression of sands at high pressures[J]. Journal of geotechnical engineering，1996，122(2)：147–154.
[24] LAGIOIA R，NOVA R. An experimental and theoretical study of the behaviour of a calcarenite in triaxial compression[J]. Géotechnique，1995，45(4)：633–648.
[25] NOVA R，CASTELLANZA R，TAMAGNINI C. A constitutive model for bonded geomaterials subject to mechanical and/or chemical degradation[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2003，27(9)：705–732.
[26] YANG C，CARTER J P，SHENG D. Description of compression behaviour of structured soils and its application[J]. Canadian Geotechnical Journal，2014，51(8)：921–933.
[27] JIANG M，LIU J，SHEN Z. DEM simulation of grain-coating type methane hydrate bearing sediments along various stress paths[J]. Engineering geology，2019，261：105280.
[28] LI T，LI L，LIU J，et al. Influence of hydrate participation on the mechanical behaviour of fine-grained sediments under one-dimensional compression：A DEM study[J]. Granular Matter，2022，24(1)：32.
[29] CONSOLI N C，FOPPA D，FESTUGATO L，et al. Key parameters for strength control of artificially cemented soils[J]. Journal of Geotechnical and Geoenvironmental Engineering，2007，133(2)：197–205.
[30] NGUYEN L D，FATAHI B，KHABBAZ H. A constitutive model for cemented clays capturing cementation degradation[J]. International Journal of Plasticity，2014，56：1–18.
[31] KIM J，DAI S，JANG J，et al. Compressibility and particle crushing of Krishna-Godavari Basin sediments from offshore India：Implications for gas production from deep-water gas hydrate deposits[J]. Marine and Petroleum Geology，2019，108：697–704.
[32] ZHOU J，YANG Z，WEI C，et al. Mechanical behavior of hydrate-bearing sands with fine particles under isotropic and triaxial compression[J]. Journal of Natural Gas Science and Engineering，2021，92：103991.
[33] UCHIDA S，SOGA K，YAMAMOTO K. Critical state soil constitutive model for methane hydrate soil[J]. Journal of geophysical research：solid earth，2012，117：B03209.
[34] 刘林，姚仰平，张旭辉，等. 含水合物沉积物的弹塑性本构模型[J]. 力学学报，2020，52(2)：556–566.(LIU Lin，YAO Yangping，ZHANG Xuhui，et al. An elastoplastic constitutive model for gas hydrate-bearing sediments[J]. Chinese Journal of Theoretical and Applied Mechanics，2020，52(2)：556–566.(in Chinese))
[35] 姜凯松，戚承志，卢春生，等. 考虑深海能源土结构性影响的弹塑性本构模型[J]. 岩土工程技术，2024，38(3)：263–272.(JIANG Kaisong，QI Chengzhi，LU Chunsheng，et al. Elastic-plastic constitutive model considering structural effects of deep-sea energy soil[J]. Geotechnical Engineering Technique，2024，38(3)：263–272.(in Chinese))
[36] 袁庆盟，孔亮，赵亚鹏. 考虑水合物填充和胶结效应的深海能源土弹塑性本构模型[J]. 岩土力学，2020，41(7)：2 304–2 312.(YUAN Qingmeng，KONG Liang，ZHAO Yapeng. An elastoplastic model for energy soils considering filling and bonding effects[J]. Rock and Soil Mechanics，2020，41(7)：2 304–2 312.(in Chinese))
[37] 赵亚鹏，刘乐乐，孔亮，等. 黏质及砂质能源土统一的弹塑性本构模型[J]. 岩石力学与工程学报，2022，41(12)：2 579–2 591. (ZHAO Yapeng，LIU Lele，KONG Liang，et al. Unified elastoplastic constitutive model for clayey and sandy energy soils[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(12)：2 579–2 591.(in Chinese))
[38] ZHOU J Z，YANG Z，WEI C，et al. Mechanical behavior of hydrate-bearing sands with fine particles under isotropic and triaxial compression[J]. Journal of Natural Gas Science and Engineering，2021：92103991.
[39] VALDERRAMA Y V. Investigación experimental del comportamiento de las arcillas bajo pequeñas deformaciones[Ph. D. Thesis][D]. México：Universidad Nacional Autónoma de México，2013.
[40] MÁNICA M A，GENS A，OVANDO-SHELLEY E，et al. An effective combined framework for modelling the time-dependent behaviour of soft structured clays[J]. Acta Geotechnica，2021，16(2)：535–550.