Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (11): 1653-1660.DOI: 10.12068/j.issn.1005-3026.2020.11.021

• Resources & Civil Engineering • Previous Articles     Next Articles

Experimental Study on Similar Materials Ratio Used in Large-Scale Engineering Model Test

LI Guang1,2,3, MA Feng-shan1,2, GUO Jie1,2, ZHAO Hai-jun1,2   

  1. 1. Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2.Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029; 3.University of Chinese Academy of Sciences, Beijing 100049, China.
  • Received:2020-05-19 Revised:2020-05-19 Online:2020-11-15 Published:2020-11-16
  • Contact: MA Feng-shan
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Abstract: Large-scale physical model test is an important method to study complex engineering problems, in which the similar material proportion selection is a crucial part. In order to reduce the test cost, simplify the test procedures, and fully utilize the properties of raw materials, the river sand, cement and gypsum was adopted as the raw materials, and 45 groups of comparative tests with bone-glue ratio and water-cement ratio was conducted as variables. The physical, dynamic and static dynamics parameters of similar materials were studied, and the main conclusions were as follows: the variation ranges of physical quantities of similar materials made from river sand, cement and gypsum are obtained; the effects of bone-glue ratio and water-cement ratio on the physical quantities of similar materials are discussed and the sensitivities are compared. The quantitative relationship between each factor and physical quantity is established based on multiple linear regressions analysis and the fitting formula can describe the properties of similar materials well.

Key words: physical model test, similar material ratio, the most common raw materials, range and variance analysis, multiple linear regression

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