登录
注册
E-alert
登录
注册
E-alert
DEVELOPMENT AND APPLICATION OF EXPERIMENT SYSTEM FOR SOIL-HYDRAULIC STRUCTURE INTERFACE
-
摘要: 为研究开采沉陷形成的地表变形对水工建筑或构筑物的影响，研制了可进行水下剪切的界面剪切试验系统。通过该试验系统，完成正交试验方法设计的界面剪切试验，研究土样的初始孔隙比、初始饱和度以及结构表面粗糙度对土-水工结构界面剪切力学性能的影响。试验表明：该系统能较好地模拟水下土-结构界面的主要物理力学特性；同时也可以实现普通直剪试验仪器的功能。对正交试验结果进行极差和方差分析的结果表明：在所设计的初始孔隙比范围内，其对界面剪切强度影响很小。初始饱和度对界面剪切强度的影响非常显著，而且饱和状态下是否采用水下剪切的方式对界面剪切强度是有影响的。结构表面粗糙度对界面剪切强度有影响，其影响规律需进一步研究。Abstract: To study the effects of surface deformation on hydraulic structure due to coal mining subsidence, an experiment system for soil hydraulic structure interface was developed to investigate the interface behavior under water.A series of soil-structure shear tests using the orthogonal experiment method were performed by that system.The influence of initial porosity ratio, initial saturation and surface roughness on mechanical behavior of soil-hydraulic structure interface.The test results showed that the system of the interface could study well the main mechanical behaviors of the interface under water and could realize the function of common direct shear apparatus.By means of range analysis and variance analysis, the results showed the initial porosity ratio designed had little impact on the shear strength.The initial saturation had a significant impact on the shear strength, which was affected by the method under water in saturated condition.Surface roughness had an impact on the shear strength, but more research was needed to study the influence rule.
-
[2] 邓喀中,郭广礼,谭志祥,等．采动区建筑物移动变形特性分析[J].中国矿业大学学报,2001,30(4):354－358. 梁为民,郭增长．采动区建筑物保护研究现状及展望[J].焦作工学院学报:自然科学版,2000,19(2):86－89. [3] 夏军武,袁迎曙,董正筑．采动区地基、独立基础与框架结构共同作用的力学模型[J].中国矿业大学学报,2007,36(1):33－37. [4] 夏军武,袁迎曙,董正筑．采动区地基、条形基础与框架结构共同作用机理研究[J].岩土工程学报,2007,29(4):537－541. [5] Potyondy J G.Skin Friction Between Various Soils and?Construction Materials[J].Geotechnique,1961,11(4):339－353. [6] Clough G W,Duncan J M.Finite Element Analyses of Retaining?Wall Behavior[J].Journal of the Soil Mechanics and Foundations?Division,ASCE,1971,97(SM12):1657－1673. [7] Desai C S,Drumm E C ,Zaman M M.Cyclic Testing and?Modeling of Interfaces[J].Journal of Geotechnical Engineering,1985,111(6):793－815. [8] Brandt J R T.Behavior of Soil-Concrete Interfaces[D].Alberta,?Canada: University of Alberta,1985. [9] 殷宗泽,朱泓,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):14－22. [10] 卢廷浩,王伟,王晓妮．土与结构接触界面改进直剪试验研究[J].沈阳建筑大学学报:自然科学版,2006,22(1):82－86. [11] 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. [12] 周国庆,赵光思,别小勇．超高压直残剪试验系统及其初步应用[J].中国矿业大学学报,2001,30(2):118－121. [13] 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. [14] 张建民,侯文峻,张嘎,等．大型三维土与结构接触面试验机的研制与应用[J].岩土工程学报,2008,30(6):889－894. [15] 高俊合,于海学,赵维炳．土与混凝土接触面特性的大型单剪试验研究及数值模拟[J].土木工程学报,2000,33(4):42－46. [16] 田建勃,韩晓雷,刘江元．砂土与混凝土接触面力学特性大型单剪试验研究[J].工业建筑,2012,42(7):110－114. [17] 李登华,郦能惠．土与结构接触面试验仪的研制与应用[J].武汉大学学报:工学版,2010,43(3):390－393． -
点击查看大图
计量
- 文章访问数: 133
- HTML全文浏览量: 8
- PDF下载量: 78
- 被引次数: 0
下载:
