High-speed rail roadbed fine-grained soil mixing amount upper limit determining method
A high-speed railway-based, method-determining technology, applied in measuring devices, analyzing materials, and using wave/particle radiation for material analysis, etc., can solve problems affecting the safety of trains, the allowable dosage is not comprehensive enough, changes, etc., and achieve excellent durability Effect
Active Publication Date: 2018-09-14
SOUTHEAST UNIV
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Abstract
The invention discloses a high-speed rail roadbed fine-grained soil mixing amount upper limit determining method. The high-speed rail roadbed fine-grained soil mixing amount upper limit determining method comprises the following steps of (1) preparing filling samples different fine-grained soil content; (2) performing indoor frost heaving test to measure the frost heaving ratio of every filling sample; (3) performing X-ray tomographic scanning on the filling samples, counting and analyzing the area of communication and the box-counting fractal dimension of distribution of the fine-grained soilin every filling sample, and establishing function relations to fine-grained soil content; (4) comprehensively analyzing the change tendency of the fine-grained soil content along with the area of communication and the box-counting fractal dimension as well as the frost heaving ratio corresponding to different fine-grained soil content, determining the maximum mixing amount of fine-grained soil in roadbed filling. The high-speed rail roadbed fine-grained soil mixing amount upper limit determining method takes into consideration the influence of distribution of fine-grained soil filling and microscopic pores, and through a porous structure microscopic analyzing method and an image processing method, can accurately acquire the fine-grained soil mixing amount upper limit meeting the requirements of non-frost heaving filling, thereby being favorable to developing high-speed rail roadbed filling with excellent durability.
Application Domain
Material analysis using wave/particle radiation
Technology Topic
Soil scienceMicro level +8
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- Effect test(1)
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