土工合成纤维土工程特性的试验研究

TEST RESEARCH ON GEOTECHNIQUE TEXTILE SOIL ENGINEERING CHARACTERISTICS

通过直剪试验和三轴压缩试验,探讨纤维长度、细度、韧度及纤维土配合比对纤维土抗剪强度和应力-应变关系的影响。结果表明:纤维的掺入对土体内摩擦角的影响较小,主要提高了土体的黏聚力;纤维土的应力-应变关系呈应变硬化的特点,不存在典型的黏着破坏和拉力破坏;纤维的长度、韧度和配合比对纤维土应力-应变关系和抗剪强度的影响显著,纤维细度的影响相对较小。

Through direct shear test and the triaxial compression test , the influence of fiber length , fineness , toughness , and mixing ratio on the stress strain curve and shear strength of textile soil （ TEXSOL ） was discussed . The research showed that the influence of fiber incorporation on soil internal friction angle was small , and it mainly improved the soil cohesion;the stress-strain relationship of TEXSOL showed strain hardening characteristic , there was no typical adhesive failure and tensile failure;the influence of fiber length , toughness , and mixing ratio on the stress-strain curve and shear strength of TEXSOL was remarkable , and that of fiber fineness relatively small .