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| DEVELOPMENT AND TEST ANALYSIS OF FLEXIBLE UNIFORM PRESSURE LOADING DEVICE |
| WANG Qi1，2，WANG Hanpeng1，LI Shucai1，LI Zhi1，LI Weiteng1，JIANG Bei3，WANG Dechao1 |
(1. Research Center of Geotechnical and Structural Engineering，Shandong University，Jinan，Shandong 250061，China；
2. College of Civil Engineering and Architecture，Shandong University of Science and Technology，Qingdao，
Shandong 266590，China；3. College of Resources and Environmental Engineering，Shandong University of
Science and Technology，Qingdao，Shandong 266590，China) |
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Abstract Flexible boundary loading is necessary for the real simulation of stress boundary condition，and is the premise to ensure the accuracy of geotechnical material test and geomechanical model test. A new flexible uniform pressure loading device is developed，which includes hydraulic cylinder，rigid thruster，hyper-flexible adjusted rubber and flexible transfer rubber etc. The force-transfer effect of flexible boundary loading is proved by numerical method；and the special flexible rubber which is suitable for test on rock and soil is developed by mix proportion test. The device is applied to the test，of which loading effect is compared with the one of rigid loading. The results show that the effect of flexible uniform pressure loading is more significant than that of rigid loading；and the flexible transfer rubber can transfer uniform pressure better on model with uneven surface. The even degree of model initial stress field increases with the Shore hardness of uniformity transmission rubber pads decreasing，loading stress increasing and depth from the surface increasing. The flexible loading device with hyper-flexible adjusted rubber and flexible transfer rubber has good character of space rotation and force transmission，and satisfies the demand of flexible loading on model with uneven surface or leaning surface. The study shows that the flexible uniform pressure loading device is able to implement the real simulation of stress boundary condition and improve the accuracy of test on rock and soil.
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Received: 01 May 2011
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| [1] 王汉鹏，李术才，郑学芬，等. 地质力学模型试验新技术研究进展及工程应用[J]. 岩石力学与工程学报，2009，28(增1)：2 765–2 771. (WANG Hanpeng，LI Shucai，ZHENG Xuefen，et al. Geo-mechanical model test new technology research development and its engineering application[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.1)：2 765–2 771.(in Chinese))
[2] 沈 泰. 地质力学模型试验技术的进展[J]. 长江科学院院报，2001，18(5)：32–36.(SHEN Tai. Development of geomechanical model experiment techniques[J]. Journal of Yangtze River Scientific Research Institute，2001，18(5)：32–36.(in Chinese))
[3] ANHDAN L Q，KOSEKI J，HAYANO K，et al. True triaxial apparatuses with two rigid boundaries[C]// Proceedings of the Sessions of the Geo-frontiers 2005 Congress. [S.l.]：[s.n.]，2005：130–142.
[4] 陈安敏，顾金才，沈 俊，等. 地质力学模型试验技术应用研究[J]. 岩石力学与工程学报，2004，23(22)：3 785–3 789.(CHEN Anmin，GU Jincai，SHEN Jun，et al. Application study on the geomechanical model experiment techniques[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(22)：3 785–3 789.(in Chinese))
[5] 孟祥跃，李世海，张均锋. 柔性边界加载试验机研制[J]. 岩石力学与工程学报，2004，23(10)：1 760–1 764.(MENG Xiangyue，LI Shihai，ZHANG Junfeng. Study and manufacture of flexible boundary loading testing machine[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(10)：1 760–1 764.(in Chinese))
[6] 邵生俊，罗爱忠，邓国华，等. 一种新型真三轴仪的研制与开发[J]. 岩土工程学报，2009，31(8)：1 172–1 179.(SHAO Shengjun，LUO Aizhong，DENG Guohua，et al. Development of a new true triaxial apparatus[J]. Chinese Journal of Geotechnical Engineering，2009，31(8)：1 172–1 179.(in Chinese))
[7] 姜耀东，刘文岗，赵毅鑫. 一种新型真三轴巷道模型试验台的研制[J]. 岩石力学与工程学报，2004，23(21)：3 727–3 731.(JIANG Yaodong，LIU Wengang，ZHAO Yixin. Design and development of a new type of triaxial system for roadway model test[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(21)：3 727–3 731.(in Chinese))
[8] 明治清，顾金才，沈 俊，等. 活塞式均布压力加载器[P]. 中国，02213775.0. 20030122.(MING Zhiqing，GU Jincai，SHEN Jun，et al. Piston-type uniform pressure loader[P]. China，02213775.0. 20030122. (in Chinese))
[9] 李 蔚，高 嫌，久米秀树，等. 橡胶等静压成型纳米ZrO2(3Y)粉素坯[J]. 无机材料学报，2002，17(6)：1 297–1 300.(LI Wei，GAO Xian，KUME Hideki，et al. Preparation of nano ZrO2(3Y) green compact by RIP[J]. Journal of Inorganic Materials，2002，17(6)：1 297–1 300.(in Chinese))
[10] 徐晓娟，梁雅秋. 橡胶等静压技术发展现状[J]. 辽宁大学学报：自然科学版，2010，37(2)：108–112.(XU Xiaojuan，LIANG Yaqiu. The advances and developments of rubber isocratic pressing technique[J]. Journal of Liaoning University：Natural Science，2010，37(2)：108–112.(in Chinese))
[11] 中华人民共和国国家标准编写组. GB/T528—2009 硫化橡胶或热塑性橡胶拉伸应力–应变性能的测定[S]. [S.l.]：[s.n.]，2005.(The National Standards Compilation Group of People?s Republic of China. GB/T528—2009 Determination of tensile stress-strain properties for rubber，vulcanized or thermoplastic[S]. [S.l.]：[s.n.]，2005.(in Chinese))
[12] 郑明军，王文静，陈政南，等. 橡胶Mooney-Rivlin模型力学性能常数的确定[J]. 橡胶工业，2003，50(8)：462–465.(ZHENG Mingjun，WANG Wenjing，CHEN Zhengnan，et al. Determination for mechanical constants of rubber Mooney-Rivlin model[J]. Rubber Industry，2003，50(8)：462–465.(in Chinese))
[13] 黄建龙，解广娟，刘正伟. 基于Mooney-Rivlin模型和Yeoh模型的超弹性橡胶材料有限元分析[J]. 橡胶工业，2008，55(8)：467–471.(HUANG Jianlong，XIE Guangjuan，LIU Zhengwei. FEA of hyperelastic rubber material based on Mooney-Rivlin model and Yeoh model[J]. Rubber Industry，2008，55(8)：467–471.(in Chinese))
[14] 王 伟，邓 涛，赵树高. 橡胶Mooney-Rivlin模型中材料常数的确定[J]. 特种橡胶制品，2004，25(4)：8–10.(WANG Wei，DENG Tao，ZHAO Shugao. Determination for material constants of rubber Mooney-Rivlin model[J]. Special Purpose Rubber，2004，25(4)：8–10. (in Chinese)) |
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2012, Vol. 31 
