长江科学院院报2019，Vol.36Issue(2)：77-80,4.DOI:10.11988/ckyyb.20171038
筑堤清滩土石料大型抗剪强度试验研究
Large-scale Shear Strength Tests of Earth-rock Embankment Material from River Dredging
张挺 1温勇 2杜秀忠 3孙昌利 4王艳丽 1潘家军2
作者信息
- 1. 广东省水利水电科学研究院,广州 510610
- 2. 广东省岩土工程技术研究中心,广州 510610
- 3. 中山大学 地球科学与工程学院,广州 510275
- 4. 仲恺农业工程学院 城乡建设学院,广州 510225
- 折叠
摘要
Abstract
The shear strength characteristics of earth-rock material from river dredging obtained from different test methods are examined via large-scale indoor triaxial shear test and direct shear test. The earth-rock material from river dredging in the harnessing project of a small and medium-sized river in Shaoguan, Guangdong Province is taken as a case study. The results of large-scale triaxial shear test show that the shear strength of the earth-rock ma-terial from river dredging increases with the rising of strain and confining pressure, displaying weak hardening with no obvious peak strength. The results of large-scale direct shear test show that peak strength of the earth-rock mate-rial from river dredging exists under different vertical pressures, characterized by a weak strain softening. Compari-son of shear strength parameters among different test methods implies that the shear strength parameters obtained from large-scale triaxial shear test is the largest, followed by those of conventional direct shear test and piled ring shear test in sequence. The research results prove that the earth-rock material from river dredging is of good shear strength, hence can be used as good embankment material after anti-seepage treatment.关键词
清滩土石料/筑堤/抗剪强度参数/大型三轴剪切试验/大型直剪试验/中小河流治理Key words
earth-rock materials from river dredging/embankment/shear strength parameters/large-scale triaxial shear test/large-scale direct shear test/governance of small and medium-sized rivers分类
建筑与水利引用本文复制引用
张挺,温勇,杜秀忠,孙昌利,王艳丽,潘家军..筑堤清滩土石料大型抗剪强度试验研究[J].长江科学院院报,2019,36(2):77-80,4.
