Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials
Particle size is an important factor affecting the Thermal-Hydraulic-Mechanical (THM) coupling behavior of graveled rock mass, especially for the shear mechanical properties. In this study, three groups of the particle size range and nine particle grading samples are designed for a large-scale direc...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8820045 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850232053681881088 |
|---|---|
| author | Chenjie Hong Man Huang Danyu Zhang Pingshan Shou Zhiyong Zhu |
| author_facet | Chenjie Hong Man Huang Danyu Zhang Pingshan Shou Zhiyong Zhu |
| author_sort | Chenjie Hong |
| collection | DOAJ |
| description | Particle size is an important factor affecting the Thermal-Hydraulic-Mechanical (THM) coupling behavior of graveled rock mass, especially for the shear mechanical properties. In this study, three groups of the particle size range and nine particle grading samples are designed for a large-scale direct shear test. The relationships between shear stress and shear displacement, shear strength, stress ratio, shear strength parameters, and particle breakage of pebble gravel are analyzed. The influence of particle size range and grade on the strength and particle breakage of gravel material is discussed. Results show evident particle breakage in the process of direct shear, and the degree of fragmentation is controlled by the normal load and the particle size distribution of the sample. The shear strength of the sample is no longer applicable to Mohr-Coulomb strength theory because of particle breakage that is more in line with the power function relationship. Shear strength of pebble gravel material has scale effect, and a corresponding relationship model between friction coefficient f of material and characteristic particle size of the sample is proposed. |
| format | Article |
| id | doaj-art-094a5b1752d049d681bcddcebaf37384 |
| institution | OA Journals |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-094a5b1752d049d681bcddcebaf373842025-08-20T02:03:19ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88200458820045Characteristics of Direct Shear and Particle Breakage of Pebble Gravel MaterialsChenjie Hong0Man Huang1Danyu Zhang2Pingshan Shou3Zhiyong Zhu4Department of Civil Engineering, Shaoxing University, 508 Huancheng West Road, Shaoxing 312000, ChinaDepartment of Civil Engineering, Shaoxing University, 508 Huancheng West Road, Shaoxing 312000, ChinaDepartment of Civil Engineering, Shaoxing University, 508 Huancheng West Road, Shaoxing 312000, ChinaNingbo Engineering Prospecting Institute, 206 Baoshan Road, Ningbo 315012, ChinaZhejiang Institute of Hydrogeology and Engineering Geology, Ningbo, 501 Liyuan South Road, Ningbo 315010, ChinaParticle size is an important factor affecting the Thermal-Hydraulic-Mechanical (THM) coupling behavior of graveled rock mass, especially for the shear mechanical properties. In this study, three groups of the particle size range and nine particle grading samples are designed for a large-scale direct shear test. The relationships between shear stress and shear displacement, shear strength, stress ratio, shear strength parameters, and particle breakage of pebble gravel are analyzed. The influence of particle size range and grade on the strength and particle breakage of gravel material is discussed. Results show evident particle breakage in the process of direct shear, and the degree of fragmentation is controlled by the normal load and the particle size distribution of the sample. The shear strength of the sample is no longer applicable to Mohr-Coulomb strength theory because of particle breakage that is more in line with the power function relationship. Shear strength of pebble gravel material has scale effect, and a corresponding relationship model between friction coefficient f of material and characteristic particle size of the sample is proposed.http://dx.doi.org/10.1155/2020/8820045 |
| spellingShingle | Chenjie Hong Man Huang Danyu Zhang Pingshan Shou Zhiyong Zhu Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials Geofluids |
| title | Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials |
| title_full | Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials |
| title_fullStr | Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials |
| title_full_unstemmed | Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials |
| title_short | Characteristics of Direct Shear and Particle Breakage of Pebble Gravel Materials |
| title_sort | characteristics of direct shear and particle breakage of pebble gravel materials |
| url | http://dx.doi.org/10.1155/2020/8820045 |
| work_keys_str_mv | AT chenjiehong characteristicsofdirectshearandparticlebreakageofpebblegravelmaterials AT manhuang characteristicsofdirectshearandparticlebreakageofpebblegravelmaterials AT danyuzhang characteristicsofdirectshearandparticlebreakageofpebblegravelmaterials AT pingshanshou characteristicsofdirectshearandparticlebreakageofpebblegravelmaterials AT zhiyongzhu characteristicsofdirectshearandparticlebreakageofpebblegravelmaterials |