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加筋粗粒土强度的试验研究 被引量:4

Experimental investigation on shear strength of reinforced coarse-grained soil
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摘要 针对加筋土工程设计中面临的问题,对加筋粗粒土强度的形成和特征进行了分析,针对性的分析了关于加筋土强度试验研究的情况,用大型三轴试验的方法测定了加筋煤矸石的强度指标,验证了分析结果。分析表明,加筋土结构是系统性的整体结构,其强度由加筋材料和被加筋土体共同作用而成,在加筋土体均质情况下,加筋土强度具有均一性,目前规范中将两者作用分开考虑的方法存在先天不足;在未破坏情况下,加筋材料自身强度对加筋土的强度影响不大;加筋材料的结构形式、刚度对加筋结构的强度有明显影响。 Focusing on the problems related to the reinforced soil, the formulation mechanism and feathers of shear strength of reinforced coarse soil are analyzed in this paper. The targeted discussions are made to analyze the shear strength test research on reinforced soil, and the shear strength index of reinforced gangue is measured though triaxial test to verify the analyzed results. The analysis resuhs show that rein- forced soil structure is systematic integrity, and its shear strength is decided by the combined effect of geo- synthetics and work soil. The shear strength of reinforced soil is uniform inside as the work of reinforced soil uniformed. The calculated method regulated in active code has defect to some degree as departing the geosynthetics from work soil to unattached. When not destroyed, the strength of geosynthetics has little ef- fect on reinforced soil, while the type of apertures and stiffness of ribs and junctions have significant effect on the structure.
出处 《中国水利水电科学研究院学报》 2013年第1期41-47,共7页 Journal of China Institute of Water Resources and Hydropower Research
关键词 加筋土 剪切强度 土工格栅 三轴试验 粗粒土 reinforced soil shear strength geogrids triaxial test
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