期刊论文

Deformation and strength tests of pre-disintegrating carbonaceous mudstone under loading and soaking condition

中文

岩土力学

1000-7598

2019

40

4

1273-1280

10.16285/j.rsm.2017.2307

No.51838001:国家自然科学基金 No.51878070:国家自然科学基金 No.CX2018B528:湖南省研究生科研创新项目 :长沙理工大学道路灾变防治 No.kfj170404:教育部工程研究中心

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预崩解炭质泥岩作为路堤填料已在我国西南地区路堤工程中广泛应用,为研究荷载与浸水条件下预崩解炭质泥岩变形与强度特性,研发一套可综合考虑多因素影响的湿化变形试验装置,并设计正交试验方案开展预崩解炭质泥岩湿化变形与直剪试验。结果表明:在加载初期和首次浸水时,预崩解炭质泥岩将产生较大竖向变形,分别为压缩变形和湿化变形,竖向荷载、循环次数、浸水时间、压实度、含水率对预崩解炭质泥岩竖向变形影响程度依次降低;预崩解炭质泥岩湿化变形过程中抗剪强度的变化主要源于黏聚力的变化,各因素对黏聚力的影响程度由强至弱依次为循环次数、浸水时间、竖向荷载、压实度及含水率;抗剪强度随竖向...

Pre-disintegrating carbonaceous mudstone has been widely used in the embankment engineering as embankment filler in Southwest China. In order to study the deformation and strength characteristics of pre-disintegrating carbonaceous mudstone under loading and soaking condition, a new type of wetting deformation test device is developed. A series of deformation tests on pre-disintegrating carbon mudstone samples are carried out according to the orthogonal experimental design. The test results show that the pre-disintegrating carbon mudstone will e...