【摘要】：為建立原狀土的結(jié)構(gòu)性模型,對(duì)土的初始應(yīng)力及其在形成土材料過程中的作用進(jìn)行了研究,并在分析常規(guī)Mohr-Coulomb準(zhǔn)則適用性的基礎(chǔ)上對(duì)該準(zhǔn)則進(jìn)行了修正和改進(jìn)�；谕恋闹T多屬性均依賴于其特定的結(jié)構(gòu)性并最終依賴于對(duì)應(yīng)的初始應(yīng)力這一客觀現(xiàn)實(shí),給出了加(卸)載比的概念,并建立了能反映初始應(yīng)力和增量應(yīng)力的修正Mohr-Coulomb強(qiáng)度屈服準(zhǔn)則。在此基礎(chǔ)上,進(jìn)一步給出了Pisa原狀軟粘土和九州火山灰撒砂法試樣2種結(jié)構(gòu)性土真三軸試驗(yàn)的各向異性屈服模型。結(jié)果表明:基于初始應(yīng)力和增量應(yīng)力的修正Mohr-Coulomb屈服準(zhǔn)則以初始應(yīng)力線而不是等傾線為軸線,修正準(zhǔn)則能合理反映原狀土的結(jié)構(gòu)性和各向異性,且與試驗(yàn)結(jié)果吻合較好。
[Abstract]:In order to establish the structural model of undisturbed soil, the initial stress of the soil and its role in the formation of soil material were studied, and the applicability of the conventional Mohr-Coulomb criterion was analyzed. Based on the objective reality that many properties of soil depend on its specific structure and ultimately depend on the corresponding initial stress, the concept of loading ratio is given. The modified Mohr-Coulomb strength yield criterion which can reflect the initial stress and the incremental stress is established. On this basis, the anisotropic yield models of two kinds of structural soils, Pisa soft clay and Jiuzhou pozzolanic sand method, are presented. The results show that the modified Mohr-Coulomb yield criterion based on initial stress and incremental stress takes the initial stress line instead of the isoclinic line as the axis, and the modified criterion can reasonably reflect the structure and anisotropy of the undisturbed soil, and it is in good agreement with the experimental results.
【作者單位】： 河南大學(xué)土木建筑學(xué)院;新鄉(xiāng)學(xué)院土木工程與建筑學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51178290,41472253) 巖土力學(xué)與工程國(guó)家重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目(Z013002)
【分類號(hào)】：U412.22

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 ;Barrier Distributions for~(16)O+~(152) Sm,~(184)W Quasi- elasticand Elastic Scattering[J];Annual Report for China Institute of Atomic Energy;1997年00期

2 沈新普,王建學(xué),Zenon Mroz;正交各向異性損傷材料的Mohr-Coulomb條件[J];煤炭學(xué)報(bào);2003年01期

3 王忠昶;王海濤;楊慶;;Analysis of Localization of Mohr-Coulomb Strength Law with Damage Effect[J];Journal of Shanghai Jiaotong University(Science);2012年05期

4 賈善坡;陳衛(wèi)忠;楊建平;陳培帥;;基于修正Mohr-Coulomb準(zhǔn)則的彈塑性本構(gòu)模型及其數(shù)值實(shí)施[J];巖土力學(xué);2010年07期

5 劉東升;張浪;劉山文;楊凱;;Mohr-Coulomb準(zhǔn)則屈服概率解析[J];地下空間與工程學(xué)報(bào);2008年02期

6 ;Quantum Effects on Coulomb Logarithm for Energetic Ion during Initial Thermalization Phase[J];中國(guó)核科技報(bào)告;2002年00期

7 ;|m| Partial wave treatment for two-dimensional Coulomb-scattering and Regge pole[J];Science in China(Series G:Physics,Mechanics & Astronomy);2004年06期

8 俞學(xué)中;劉鵬飛;郭乙木;陶偉明;;纖維拔出時(shí)Coulomb摩擦界面應(yīng)力傳遞[J];浙江大學(xué)學(xué)報(bào)(工學(xué)版);2006年08期

9 黃小國(guó);李建中;劉小豐;;地震作用下剛體滑動(dòng)位移的計(jì)算與比較——基于Coulomb摩擦模型[J];振動(dòng)與沖擊;2011年02期

10 賈喜榮,馮秋喜;Coulomb 準(zhǔn)則與 Griffith Mohr 準(zhǔn)則的一致性及其應(yīng)用[J];太原理工大學(xué)學(xué)報(bào);1998年05期

相關(guān)會(huì)議論文 前6條

1 杜奇石;;Empirical and Accurate Method for the Three-Dimensional Electrostatic Potential(EM-ESP) of Biomolecules[A];第十一屆全國(guó)計(jì)算（機(jī)）化學(xué)學(xué)術(shù)會(huì)議論文摘要集[C];2011年

2 ;Parameter Identification of a Model with Coulomb Friction for a Real Inverted Pendulum System[A];2009中國(guó)控制與決策會(huì)議論文集（2）[C];2009年

3 Lihong Zhang;Chong Wang;Jie Yang;Jintao Yao;Yu Yang;;Coulomb effects in the Ge/Si Single Quantum Dot[A];Proceedings of 2012 China Functional Materials Technology and Industry Forum[C];2012年

4 言志信;段建;王后裕;;Constitutive models in stability analysis of rock slope[A];Proceedings of the 9th National Conference on Rheology[C];2008年

5 ;ESTIMATION FOR STRENGTH OF MASSIVE JOINTED ROCK MASS[A];巖土工程數(shù)值方法與高性能計(jì)算學(xué)術(shù)研討會(huì)論文集[C];2007年

6 ;Magnetoelectronics:Opportunities and Challenges[A];中國(guó)高等科學(xué)技術(shù)中心論文集[C];2004年

相關(guān)碩士學(xué)位論文 前1條

1 胡軍軍;基于Coulomb摩擦阻尼的離散單元法[D];西南交通大學(xué);2010年

，

本文編號(hào)：2365449