Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks

ZHANG Bo; LI Shu-cai; ZHANG Dun-fu; LI Ming-tian; SHAO Dong-liang

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Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks

更新时间：2026-06-25

- Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks
- Vol. 33, Issue 6, (2012)
- 作者机构：
  
  1. 山东大学土建与水利学院,济南,250061
  2. 山东大学岩土与结构工程研究中心,济南,250061
  3. 山东交通学院土木工程系,济南,250023
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU458
- Online First：14 June 2012，
  
  Published：2012
- 稿件说明：
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ZHANG Bo, LI Shu-cai, ZHANG Dun-fu, et al. Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks[J]. 2012, 33(6).
DOI：

ZHANG Bo, LI Shu-cai, ZHANG Dun-fu, et al. Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks[J]. 2012, 33(6). DOI：

摘要

研究了单轴压缩条件下裂隙含充填与否对节理岩体力学性能的影响。以相似材料模拟脆性岩石材料制作含预置裂隙试件，在刚性试验机上对试件进行单轴压缩试验，研究了裂隙充填与否对节理岩体强度峰值及峰后塑性变形能力的影响；用有限元软件ABAQUS对试件进行断裂及损伤分析，研究了裂隙充填与否对节理岩体应力强度因子及损伤因子的影响。研究表明，在单轴压缩情况下，裂隙中含充填与不含充填相比，裂隙含充填岩体峰值强度提高、峰后塑性变形能力增强、总应变能释放率Gc降低，增大了节理岩体抵抗开裂的能力；裂隙含充填岩体环向拉应力场从分布区域及峰值都小于无充填裂隙试件；在同样外荷载作用下，裂隙含充填岩体损伤度小于无充填岩体。

Abstract

The influence of crack filling on the mechanical property of jointed rock mass is studied. The brittle jointed rock mass specimens with preset crack are simulated by the similar material. The mechanical properties of specimens are tested by uniaxial compression. The fracture and damage of jointed rock mass are analyzed through the program ABAQUS. The tests and analyses results show that compared with the specimens that there are no filling in the crack

the peak strength of jointed rock specimens which have filled crack slightly increase and its post-peak plasticity is enhanced significantly; the strain energy release rate Gc of jointed rock specimen decreases. The damage factor and the hoop tension stress field area as well as peak are less than those of specimens with non-filled cracks.

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