模拟月壤的抗剪强度特性试验
发布时间：2019-07-08 20:53
【摘要】：对火山玄武岩破碎后形成的6个粒组区间的试样依规范进行直剪试验,得出不同相对密度下的内聚力和内摩擦角试验数据;根据抗剪强度参数的统计结果,按Chauvenet法剔除粗差数据,并评价变异性,以提高数据的准确性和可靠度。对试样在不同的相对密度下和不同粒组区间的力学规律进行对比、研究分析后得出:模拟月壤的内聚力为0.33~5.5kPa,内摩擦角为29.1°~35.65°;抗剪强度参数与颗粒粒径、密度具有较好的线性关系;颗粒粒径决定了密度的变化范围,这导致了抗剪强度参数在密度的一定的范围内随之变化,而总的变化趋势却是由粒径来控制的。根据以上结论,按一定颗粒级配研制模拟月壤混合样,其内聚力为0.16~1.59kPa,内摩擦角为34.8°~45.5°,符合真实月壤的实际情况。可为后续的模拟月壤研制和性能评估提供参考。
文内图片：
图片说明：图１直剪试验仪器及受力简图Ｆｉｇ．１Ｄｉａｇｒａｍｏｆｍｏｔｏｒ－ｄｒｉｖｅｎｄｉｒｅｃｔｓｈｅａｒａｐｐａｒａｔｕｓａｎｄｆｏｒｃｅ
[Abstract]:According to the code, the test data of cohesion and internal friction angle under different relative densities are obtained, and according to the statistical results of shear strength parameters, the gross error data are eliminated by Chauvenet method, and the variability is evaluated in order to improve the accuracy and reliability of the data. The mechanical laws of the samples under different relative densities and different particle groups were compared. The results showed that the cohesion of simulated lunar soil was 0.33 鈮，
本文编号：2511867
文内图片：
图片说明：图１直剪试验仪器及受力简图Ｆｉｇ．１Ｄｉａｇｒａｍｏｆｍｏｔｏｒ－ｄｒｉｖｅｎｄｉｒｅｃｔｓｈｅａｒａｐｐａｒａｔｕｓａｎｄｆｏｒｃｅ
[Abstract]:According to the code, the test data of cohesion and internal friction angle under different relative densities are obtained, and according to the statistical results of shear strength parameters, the gross error data are eliminated by Chauvenet method, and the variability is evaluated in order to improve the accuracy and reliability of the data. The mechanical laws of the samples under different relative densities and different particle groups were compared. The results showed that the cohesion of simulated lunar soil was 0.33 鈮，
本文编号：2511867
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