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Study on Soil Strength Indexes and Its Test and Analysis Method of Highway Embankment

Author: MaWeiHua
Tutor: ZhaoMingHua；DengZuoYu
School: Hunan University
Course: Road and Railway Engineering
Keywords: Highway Soil base Deform Strength index Detection methods Test analysis
CLC: U416.1
Type: Master's thesis
Year: 2005
Downloads: 308
Quote: 1
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Abstract


With the development of China 's high-speed transport undertakings , highway traffic and axle load is growing rapidly, thus increasing highway subgrade strength indicators and their quality requirements . Currently , most of the methods of detection of various strength index non- GM, to take a single indicator analysis there are some limitations on the subgrade strength , is still a lack of a reasonable experience of conversion formula between soil base strength indicators to the evaluation of the strength of the soil base bring some difficulties . Measured various strength indicators , the required detection equipment is large , heavy workload detection . Therefore, how to quickly and accurately determine the the highway subgrade soil strength indicators and to explore the relationship between each indicator has important engineering significance and potential economic benefits . Highway soil base for the study, combined Ministry of Transportation ninety-five industry joint research project on the basis of in -depth analysis of the existing domestic and international research results , Xiangtan to Leiyang segment of the Beijing-Zhuhai Expressway Red Sandstone roadbed construction study subject , the first in-depth analysis of subgrade soil deformation characteristics and influencing factors of subgrade soil stress - strain relationship and its intensity mechanism proposed evaluation of the indicators of the strength of the soil base ; then discussed the highway soil base strength indicators of various test methods and their limitations , through the vast collection of the Hunan Provincial highway engineering test data , and in - depth analysis on the basis of the establishment of the unearthed body resistance , soil consistency , capacity , subgrade bearing ratio , empirical relationship between Resilient Modulus , Elastic Deflection and degree of compaction ; Finally, the engineering mechanical properties and on-site test methods Xiangtan Leiyang highway test sections of red sandstone embankment , perfect site the CBR and off the globes quick Determination of field CBR detection method and calculation methods , one or two types of red sandstone fall globes rapid detection of subgrade bearing ratio effective coefficient C . In this paper, based to a large number of field data , closely integrated engineering practice , the results of design or scientific reference available for Hunan and similar soil area freeways .

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Subgrade
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