| 含充填节理岩体相似材料试件单轴压缩试验及断裂损伤研究 |
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| 引用本文： | 张波,李术才,张敦福,李明田,邵冬亮. 含充填节理岩体相似材料试件单轴压缩试验及断裂损伤研究[J]. 岩土力学, 2012, 33(6): 1647-1652 |
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| 作者姓名： | 张波 李术才 张敦福 李明田 邵冬亮 |
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| 作者单位： | 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 |
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| 基金项目： | 高等学校博士学科点专项科研基金新教师类资助课题(No.20110131120035);山东大学自主创新基金(No.2012TS059);山东省自然科学基金(No.ZR2009FM041);国家自然科学基金青年科学基金(No.41002098) |
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| 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。
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| 关 键 词： | 节理岩体 相似材料 充填裂隙 峰后塑性 应力强度因子 损伤因子 |
| 收稿时间： | 2010-12-16 |
Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks |
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| ZHANG Bo , LI Shu-cai , ZHANG Dun-fu , LI Ming-tian , SHAO Dong-liang. Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks[J]. Rock and Soil Mechanics, 2012, 33(6): 1647-1652 |
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| Authors: | ZHANG Bo LI Shu-cai ZHANG Dun-fu LI Ming-tian SHAO Dong-liang |
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| Affiliation: | 1. School of Civil and Hydraulic Engineering, Shandong University, Jinan 250061, China; 2. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 3. Department of Civil Engineering, Shandong Jiaotong University, Jinan 250023, China |
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| 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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| Keywords: | jointed rock mass similar material filled crack post-peak plasticity stress intensity factor damage factor |
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