Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar
Shear design is an important part of structural design. External vertical prestressing rebars (EVPRs) have proven to be an effective way to enhance structural shear resistance. The objectives of this study are to simulate EVPR strengthening of concrete beams using a nonlinear three-dimensional finit...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5483436 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832547761206067200 |
|---|---|
| author | Ying Li Meizhong Wu Weiqi Wang Xingwei Xue |
| author_facet | Ying Li Meizhong Wu Weiqi Wang Xingwei Xue |
| author_sort | Ying Li |
| collection | DOAJ |
| description | Shear design is an important part of structural design. External vertical prestressing rebars (EVPRs) have proven to be an effective way to enhance structural shear resistance. The objectives of this study are to simulate EVPR strengthening of concrete beams using a nonlinear three-dimensional finite element model and to explore its shear enhancement features under different EVPR stirrup ratios, vertical compressive stress degrees, and optimal arrangements of EVPRs. Concrete, common reinforced bars, and EVPRs use solid, steel, and truss elements, respectively. In addition, the total strain crack model is used to characterise the concrete. The results indicate that the EVPR stirrup ratio can reduce the diagonal crack width and improve the shear capacity, and the vertical compressive stress degree can effectively control crack development in the initial loading. A “small-area EVPR dense arrangement” is the recommended EVPR configuration method. Both experiments and numerical analyses show that EVPRs can effectively improve the shear performance of concrete. |
| format | Article |
| id | doaj-art-1cb4b3f9f4ed4a52bacabe7d9de4c142 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-1cb4b3f9f4ed4a52bacabe7d9de4c1422025-02-03T06:43:27ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/54834365483436Shear Behavior of RC Beams Strengthened by External Vertical Prestressing RebarYing Li0Meizhong Wu1Weiqi Wang2Xingwei Xue3Guangzhou Northring Intelligent Transport Technology Co., Ltd., Guangzhou, Guangdong 510031, ChinaSchool of Traffic Engineering, Shenyang Jianzhu University, Shenyang, Liaoning 110168, ChinaSchool of Traffic Engineering, Shenyang Jianzhu University, Shenyang, Liaoning 110168, ChinaSchool of Traffic Engineering, Shenyang Jianzhu University, Shenyang, Liaoning 110168, ChinaShear design is an important part of structural design. External vertical prestressing rebars (EVPRs) have proven to be an effective way to enhance structural shear resistance. The objectives of this study are to simulate EVPR strengthening of concrete beams using a nonlinear three-dimensional finite element model and to explore its shear enhancement features under different EVPR stirrup ratios, vertical compressive stress degrees, and optimal arrangements of EVPRs. Concrete, common reinforced bars, and EVPRs use solid, steel, and truss elements, respectively. In addition, the total strain crack model is used to characterise the concrete. The results indicate that the EVPR stirrup ratio can reduce the diagonal crack width and improve the shear capacity, and the vertical compressive stress degree can effectively control crack development in the initial loading. A “small-area EVPR dense arrangement” is the recommended EVPR configuration method. Both experiments and numerical analyses show that EVPRs can effectively improve the shear performance of concrete.http://dx.doi.org/10.1155/2021/5483436 |
| spellingShingle | Ying Li Meizhong Wu Weiqi Wang Xingwei Xue Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar Advances in Civil Engineering |
| title | Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar |
| title_full | Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar |
| title_fullStr | Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar |
| title_full_unstemmed | Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar |
| title_short | Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar |
| title_sort | shear behavior of rc beams strengthened by external vertical prestressing rebar |
| url | http://dx.doi.org/10.1155/2021/5483436 |
| work_keys_str_mv | AT yingli shearbehaviorofrcbeamsstrengthenedbyexternalverticalprestressingrebar AT meizhongwu shearbehaviorofrcbeamsstrengthenedbyexternalverticalprestressingrebar AT weiqiwang shearbehaviorofrcbeamsstrengthenedbyexternalverticalprestressingrebar AT xingweixue shearbehaviorofrcbeamsstrengthenedbyexternalverticalprestressingrebar |