|
|
|
| Experimental study on progressive failure of soil-structure interfaces based on a new measuring method of local stress and displacement |
| GAN Fei1，2，YE Xiaoming1，2，YIN Ke1，2，LI Meilin3，YANG Jun4，XIAO Yang1，2 |
(1. School of Civil Engineering，Chongqing University，Chongqing 400045，China；2. Key Laboratory of New Technology for Construction of Cities in Mountain Area，Ministry of Education，Chongqing University，Chongqing 400045，China；3. Housing and Urban-Rural Development Bureau of Wudang in Guiyang，Guiyang，Guizhou 550018，China；4. Chongqing Association of
Building Materials，Chongqing 400042，China) |
|
|
|
|
Abstract In order to research the mechanism of and influencing factors in progressive failure of contact surfaces of soil-structure，a new stress-displacement sensor was developed and large direct shear tests on the contact surface between red clay and structure were performed. The stress and deformation of the contact surface between red clay and structure under shear were analyzed and the progressive failure mechanism of the contact surface was investigated. The test results indicate that the peak shear stress and displacement of the contact surface occur successively along the shear direction and that the contact surface fails progressively. It was also found that the normal stress on the contact surface and the compaction degree of the soil influence significantly the progressive failure. The time difference to reach the peak shear stress at measuring points along the shear direction increases with the rising of the normal stress on the contact surface，but decreases sharply with the ascending of the compaction degree of the soil. The contact surface presents more remarkable progressive failure behavior with a lower compaction degree.
|
|
|
|
|
|
| [1] 周爱兆，卢廷浩，刘 尧. 土与结构接触面力学特性研究现状与展望[J]. 河海大学学报：自然科学版，2007，35(5)：524–528.(ZHOU Aizhao，LU Tinghao，LIU Yao. Present situation and prospect of mechanical properties of soil-structure interface[J]. Journal of Hohai University：Natural Science，2007，35(5)：524–528.(in Chinese))
[2] 殷宗泽，朱 私，许国华. 土与结构材料接触面的变形及其数学模拟[J]. 岩土工程学报，1994，16(3)：14–21.(YIN Zongze，ZHU Si，XU Guohua. Numberical study on deformations of interface between soil and structure materials[J]. Chinese Journal of Geotechnical Engineering，1994，16(3)：14–21.(in Chinese))
[3] 张 嘎，张建民，梁东方，土与结构接触面试验中的土颗粒细观运动测量[J]. 岩土工程学报，2005，27(8)：904–907.(ZHANG Ga，ZHANG Jianmin，LIANG Dongfang. Measurement of soil particle movement in soil-structure interface test[J]. Chinese Journal of Geotechnical Engineering，2005，27(8)：904–907.(in Chinese))
[4] 谭 彩，王 琛，吴 勇，等. 无黏性粗粒土直接剪切试验的强度尺寸效应[J]. 四川大学学报：工程科学版，2016，48(1)：94–99. (TAN Cai，WANG Chen，WU Yong，et al. Size effects on strength of cohesionless coarse- grained soil under direct shear condition[J]. Journal of Sicuhan Uinverstiy：Engineerring Science，2016，48(1)：94–99.(in Chinese))
[5] 温 智，俞祁浩. 青藏粉土–玻璃钢接触面力学特性直剪试验研究[J]. 岩土力学，2013，32(增2)：45–50.(WEN Zhi，YU Qihao. Direct shear tests for mechanical characteristics of interface between Qinghai—Tibetan silt and fiberglass reinforced plastics[J]. Rock and Soil Mechanics，2013，32(Supp.2)：45–50.(in Chinese))
[6] 朱俊高，SHAKIR R R，杨有莲，等. 土–混凝土接触面特性环剪单剪试验比较研究[J]. 岩土力学，2011，32(3)：692–696.(ZHU Jungao，SHAKIR R R，YANG Youlian，et al. Comparison of behaviors of soil-concrete interface from ring-shear and simple shear tests[J]. Rock and Soil Mechanics，2011，32(3)：692–696.(in Chinese))
[7] 胡黎明，濮家骝. 土与结构物接触面物理力学特性试验研究[J]. 岩土工程学报，2001，23(4)：431–435.(HU Liming，PU Jialiu. Experimental study on mechanical characteristics of soil-structure interface[J]. Chinese Journal of Geotechnical Engineering，2001，23(4)：431–435.(in Chinese))
[8] 张 嘎， 张建民. 大型土与结构接触面循环加载剪切仪的研制及应用[J]. 岩土工程学报，2003，25(2)：149–153.(ZHANG Ga，ZHANG Jianmin. Development and application of cyclic shear apparatus for soil-structure interface[J]. Chinese Journal of Geotechnical Engineering，2003，25(2)：149–153.(in Chinese))
[9] 李守义，吕生龙，张长喜. 某工程边坡蠕滑机制与监测资料分析[J] 岩石力学与工程学报，1998，17(2)：133–139.(LI Shouyi，LU Shenglong，ZHANG Changxi. Analysis of creep mechanism and monitoring data about a project[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(2)：133–139.(in Chinese))
[10] 王庚荪. 边坡的渐进破坏及稳定性分析[J]. 岩石力学与工程学报2000，19(1)：29–33(WANG Gengsun. Progressive failure and stability analysis of slope[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(1)：29–33.(in Chinese))
[11] 卢应发，黄学斌，刘德富．边坡力的分布特征和稳定性分析[J].岩土工程学报，2017，39(7)：1 322–1 329.(LU Yinfa，HUANG Xuebin，LIU Defu. Distribution characteristics of force and stability analysis of slope[J]. Chinese Journal of Geotechnical Engineering， 2017，39(7)：1 322–1 329.(in Chinese))
[12] BJERRUM D L. Progressive failure in slopes of overconsoliated plastic clay and clay shales[J]. Journal of the Soil Mechanics and Foundations Division，ASCE，1967，93(SM5)：3–49.
[13] HOEK E，BROWN E T. practical estimates of rock mass strength[J]. International Journal of Rock Mechanics and Mining Sciences，1997，34(8)：1 165–1 186.
[14] 卢应发，邓国栋，杨丽平，等. 滑坡的关键块力学行为及力传递特征和不同应力状态的稳定系数研究[J]. 岩石力学与工程学报，2014，33(5)：884–891.(LU Yingfa，DENG Guodong，YANG Liping，et al. Study of mechanical behaviors of key block and characteristics of force transmit and stability coefficient of different state stresses of landslides[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(5)：884–891.(in Chinese))
[15] 卢应发，杨丽平，华国辉. 一种新的节理本构模型及几种新的滑坡稳定系数计算方法[J]. 岩石力学与工程学报，2013，32(12)：2 431–2 438.(LU Yingfa，YANG Liping，HUA Guohui. A new joint constitutive model and a few new methods of stability coefficient calculation of landslides[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(12)：2 431–2 438.(in Chinese))
[16] TU M Y，LU Y F，LIU D F. Study of mechanical properties of landslides in different stress state[J]. Materials Research Innovations，2014，18(Supp.2)：863–868.
[17] LU Y F，TU M Y，LIU D F. Joint constitutive model and new methods of stable factor calculation of landslides[J]. Materials Research Innovations，2015，18(Supp.2)：768–774.
[18] LU Y F. Deformation and failure mechanism of slope in three dimensions[J]. Journal of Rock Mechanics and Geotechnical Engineering，2015，7(2)：109–119.
[19] 胡黎明，马 杰，张丙印. 直剪试验中接触面渐进破坏的数值模拟[J]. 清华大学学报：自然科学版，2008，48(6)：943–946.(HU Liming，MA Jie，ZHANG Bingyin. Numerical simulation of interface failureduring direct shear tests[J]. Journal of Tsinghua University：Science and Technology，2008，48(6)：943–946.(in Chinese))
[20] 周莲君，彭振斌，何忠明，等. 结构面剪切特性的试验与数值模拟分析[J]. 科技导报，2009，27(4)：31–35.(ZHOU Lianjun，PENG Zhenbin，HE Zhongming，et al. Test for shear characteristics of structural plane and its numerical simulation analysis[J]. Review，2009，27(4)：31–35.(in Chinese))
[21] 周 健，贾敏才，余荣传. 土工细观模型试验与数值模拟[M]. 北京：科学出版社，2008：40–73.(ZHOU Jian，JIA Mincai，YU Rongchuan. Geotechnical mesoscopic model test and numerical simulation[M]. Beijing：Science Press，2008：40–73.(in Chinese))
[22] 干 飞，叶晓明. 一种剪应力测试装置和方法[P]. 中国：CN105758559A，2016–08–10.(GAN Fei，YE Xiaoming. A shear stress testing device and method[P]. China：CN105758559A，2016–08–10.(in Chinese))
[23] 袁爱忠，张远军. 填方材料变形模量与压实度的关系[J]. 四川理工学院学报：自然科学版，2012，25(5)：96–97.(YUAN Aizhong，ZHUANG Yuanjun. Relationship fill material deformation modulus and degree of compaction[J]. Journal of Sichuan University of Science and Engineering：Natural Science，2012，25(5)：96–97. (in Chinese))
|
|
|
|
2018, Vol. 37 
