中国工程科学2011，Vol.13Issue(1)：74-80,7.
富水全、强风化砂岩强度特性试验及本构关系探讨
Experimental investigation on strength of sandstone weathered and absorbed water heavily and its constitutive law
邹翀 1雷胜友 2岳喜军 2宋妍 1高攀1
作者信息
- 1. 中铁隧道集团有限公司技术中心,河南洛阳,471009
- 2. 长安大学公路学院,西安,710064
- 折叠
摘要
Abstract
According to the feature of sandstone weathered and absorbed water heavily, the authors analyzed the physical and mechanical properties and chemical composition of the sandstone experimentally, then studied influence of blasting disturbance, water content, sample bedding on stress-strain strength characteristics through uniaxial and triaxial compression tests, and found that the sandstone would become weak in the strength when it absorbed water, and its cohesion decreased and showed significant anisotropy while friction angle was not changed.After the sandstone underwent blasting, its uniaxial compressive resistance and elastic modulus decreased, and Poisson ratio increased. As the sandstone has obvious bedding properties, the strengths of sample obtained from two different loading directions are different obviously. Based on the stress-strain curves from the triaxial tests, the anthors found the stress-strain curves could be described well by the modified Duncan-Zhang model.关键词
砂岩/含水量/强度/爆破扰动/节理/本构关系分类
建筑与水利引用本文复制引用
邹翀,雷胜友,岳喜军,宋妍,高攀..富水全、强风化砂岩强度特性试验及本构关系探讨[J].中国工程科学,2011,13(1):74-80,7.
