| 基于SMP准则的旁压试验分析 |
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| 引用本文： | 蔡永生. 基于SMP准则的旁压试验分析[J]. 低温建筑技术, 2017, 0(11): 109-111,131. DOI: 10.13905/j.cnki.dwjz.2017.11.028 |
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| 作者姓名： | 蔡永生 |
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| 作者单位： | ;1.上海岩土工程勘察设计研究院有限公司 |
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| 基金项目： | 上海张江国家自主创新示范区专项发展资金重点项目 |
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| 摘 要： | 旁压试验是一种在岩土工程勘察中应用较为广泛的原位测试技术,可用于评定地基承载力和变形参数等。本文采用SMP屈服准则和平面应变轴对称问题的柱孔扩张理论,对旁压试验的机理进行分析,获得了旁压试验过程中的位移、应力和应变的分布,得到了塑性区半径与扩张压力的关系,同时为临塑压力和极限压力的确定提供了一种新的思路。理论计算结果与试验数据具有较好的一致性,表明理论分析具有一定的合理性,能够用于旁压试验的相关解释与分析。
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| 关 键 词： | 旁压试验 SMP准则 柱孔扩张理论 |
ANALYSIS OF PRESSURMETER TEST BASED ON SMP CRITERION |
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| Abstract: | Pressuremeter is a kind of in-situ testing equipment wildly used in geotechnical engineering investigation,for assessment bearing capacity and deformation parameters etc.Based on SMP criterion and cylindrical cavity expansion theory of axisymmetric problem in the plane strain condition,the mechanism of pressurmeter test is analyzed and the distribution of displacement,stress and strain and the relationship between plastic zoon and pressure are obtained.Also,it provides a new method for determination of plastic stress and ultimate stress.That theoretical calculation results and test results have an excellent agreement shows the theoretical analysis is reasonable for pressurmeter test.1980s along with practice of engineering application. |
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