Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method
This paper studied the bond performance of full-grouting rock bolts with a theoretical analysis. The variable controlling method was used to study the effect of parameters on the load-carrying force of bars. The results showed that when the bar diameter grew from 15 mm to 25 mm, the maximum force of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/9/3157 |
| _version_ | 1797505076263124992 |
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| author | Jianhang Chen Ziwei Ding Saisai Wu Junwen Zhang |
| author_facet | Jianhang Chen Ziwei Ding Saisai Wu Junwen Zhang |
| author_sort | Jianhang Chen |
| collection | DOAJ |
| description | This paper studied the bond performance of full-grouting rock bolts with a theoretical analysis. The variable controlling method was used to study the effect of parameters on the load-carrying force of bars. The results showed that when the bar diameter grew from 15 mm to 25 mm, the maximum force of the bars rose from 194 kN to 349 kN, growing by 80%. As for the stiffness, it grew by 108%. Moreover, when the elastic modulus grew from 50 GPa to 200 GPa, the maximum force rose from 229 kN to 269 kN, only growing by 17%. As for the stiffness, it grew by 100%. When the grouting length increased from 2 m to 3 m, the maximum force rose from 269 kN to 364 kN, growing by 35%. However, the grouting length had almost no effect on the stiffness. Lastly, for the bond slip when the bond strength was reached, when it grew from 1 mm to 3 mm, the maximum force dropped from 281 kN to 258 kN, dropping by 8%. As for the stiffness, it dropped by 44%. This paper is conducive to enriching the base of knowledge. |
| first_indexed | 2024-03-10T04:13:26Z |
| format | Article |
| id | doaj.art-cb727798357549d5a5e9ed3b6d1d7403 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:13:26Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-cb727798357549d5a5e9ed3b6d1d74032023-11-23T08:07:21ZengMDPI AGEnergies1996-10732022-04-01159315710.3390/en15093157Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling MethodJianhang Chen0Ziwei Ding1Saisai Wu2Junwen Zhang3State Key Laboratory of Coal Resources in Western China, Xi’an University of Science and Technology, Xi’an 710054, ChinaState Key Laboratory of Coal Resources in Western China, Xi’an University of Science and Technology, Xi’an 710054, ChinaShaanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaThis paper studied the bond performance of full-grouting rock bolts with a theoretical analysis. The variable controlling method was used to study the effect of parameters on the load-carrying force of bars. The results showed that when the bar diameter grew from 15 mm to 25 mm, the maximum force of the bars rose from 194 kN to 349 kN, growing by 80%. As for the stiffness, it grew by 108%. Moreover, when the elastic modulus grew from 50 GPa to 200 GPa, the maximum force rose from 229 kN to 269 kN, only growing by 17%. As for the stiffness, it grew by 100%. When the grouting length increased from 2 m to 3 m, the maximum force rose from 269 kN to 364 kN, growing by 35%. However, the grouting length had almost no effect on the stiffness. Lastly, for the bond slip when the bond strength was reached, when it grew from 1 mm to 3 mm, the maximum force dropped from 281 kN to 258 kN, dropping by 8%. As for the stiffness, it dropped by 44%. This paper is conducive to enriching the base of knowledge.https://www.mdpi.com/1996-1073/15/9/3157rock boltingtri-linear equationbond strengthbond slipload-carrying force |
| spellingShingle | Jianhang Chen Ziwei Ding Saisai Wu Junwen Zhang Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method Energies rock bolting tri-linear equation bond strength bond slip load-carrying force |
| title | Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method |
| title_full | Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method |
| title_fullStr | Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method |
| title_full_unstemmed | Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method |
| title_short | Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method |
| title_sort | studying the bond performance of full grouting rock bolts based on the variable controlling method |
| topic | rock bolting tri-linear equation bond strength bond slip load-carrying force |
| url | https://www.mdpi.com/1996-1073/15/9/3157 |
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