含水率对加筋喷播土壤耦合力学特性影响研究Study on Influence of Moisture Content on Coupling Mechanical Properties of Reinforced Sprayed-Soil
刘连肖,洪波,董文彬,孙钟野,宋万里,宋霞
摘要(Abstract):
利用自制的拉拔仪器,通过麻绳加筋喷播土壤的力学测试,研究了含水率对麻绳-喷播土壤界面耦合力学特性的影响。该研究主要包括两组试验,第1组试验测试结构性破坏的喷播土壤力学特性;第2组试验测试保持结构性的喷播土壤的力学特性。结果表明:第1组试验中麻绳与喷播土壤耦合力学特性受含水率影响明显,随着含水率升高,麻绳拉拔强度呈线性减小,含水率对摩擦角的影响不明显,黏聚力随着含水率升高呈现指数式下降;第2组试验中麻绳与喷播土壤耦合力学特性受含水率影响同样明显,麻绳与喷播土壤作用的峰值强度和残余强度随含水率升高呈指数下降。
关键词(KeyWords): 麻绳;喷播土壤;拉拔试验;含水率;强度
基金项目(Foundation):
作者(Author): 刘连肖,洪波,董文彬,孙钟野,宋万里,宋霞
DOI: 10.16441/j.cnki.hdxb.20160095
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