Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading
This study investigated the multi-hazard resistance of highway bridge piers retrofitted with carbon-fiber-reinforced polymer (CFRP) and polyurea coating against the combined collision–blast loads and evaluated their effectiveness. Detailed finite element models of CFRP- and polyurea-retrofitted dual...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-05-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/10/3784 |
| _version_ | 1797599291573796864 |
|---|---|
| author | Chen Fang Tewodros Y. Yosef Daniel G. Linzell |
| author_facet | Chen Fang Tewodros Y. Yosef Daniel G. Linzell |
| author_sort | Chen Fang |
| collection | DOAJ |
| description | This study investigated the multi-hazard resistance of highway bridge piers retrofitted with carbon-fiber-reinforced polymer (CFRP) and polyurea coating against the combined collision–blast loads and evaluated their effectiveness. Detailed finite element models of CFRP- and polyurea-retrofitted dual-column piers that considered the blast-wave–structure interactions and the soil pile dynamics were developed using LS-DYNA to simulate the combined effects of a medium-size truck collision and close-in blast. Numerical simulations were conducted to examine the dynamic response of bare and retrofitted piers under different levels of demands. The numerical results indicated that using CFRP wrapping or polyurea coating effectively mitigated the combined collision and blast effects and increased the pier’s resistance. Parametric studies were performed to identify an in situ retrofit scheme to control the parameters and determine the optimal schemes for the dual-column piers. For the parameters that were studied, the results showed that retrofitting at half the height of both columns at the base was identified as an optimal scheme to improve the multi-hazard resistance of the bridge pier. |
| first_indexed | 2024-03-11T03:32:10Z |
| format | Article |
| id | doaj.art-42dea7fc8d7647dc8bd2da1fd46b94cb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T03:32:10Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-42dea7fc8d7647dc8bd2da1fd46b94cb2023-11-18T02:16:07ZengMDPI AGMaterials1996-19442023-05-011610378410.3390/ma16103784Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast LoadingChen Fang0Tewodros Y. Yosef1Daniel G. Linzell2Midwest Roadside Safety Facility, Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, USAMidwest Roadside Safety Facility, Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, USADepartment of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68586, USAThis study investigated the multi-hazard resistance of highway bridge piers retrofitted with carbon-fiber-reinforced polymer (CFRP) and polyurea coating against the combined collision–blast loads and evaluated their effectiveness. Detailed finite element models of CFRP- and polyurea-retrofitted dual-column piers that considered the blast-wave–structure interactions and the soil pile dynamics were developed using LS-DYNA to simulate the combined effects of a medium-size truck collision and close-in blast. Numerical simulations were conducted to examine the dynamic response of bare and retrofitted piers under different levels of demands. The numerical results indicated that using CFRP wrapping or polyurea coating effectively mitigated the combined collision and blast effects and increased the pier’s resistance. Parametric studies were performed to identify an in situ retrofit scheme to control the parameters and determine the optimal schemes for the dual-column piers. For the parameters that were studied, the results showed that retrofitting at half the height of both columns at the base was identified as an optimal scheme to improve the multi-hazard resistance of the bridge pier.https://www.mdpi.com/1996-1944/16/10/3784multi-hazard resistanceCFRP retrofittingpolyurea coatingreinforced concrete pierscollision–blast loadingfinite element analysis |
| spellingShingle | Chen Fang Tewodros Y. Yosef Daniel G. Linzell Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading Materials multi-hazard resistance CFRP retrofitting polyurea coating reinforced concrete piers collision–blast loading finite element analysis |
| title | Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading |
| title_full | Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading |
| title_fullStr | Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading |
| title_full_unstemmed | Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading |
| title_short | Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading |
| title_sort | multi hazard resistant behavior of cfrp and polyurea retrofitted reinforced concrete two column piers under combined collision blast loading |
| topic | multi-hazard resistance CFRP retrofitting polyurea coating reinforced concrete piers collision–blast loading finite element analysis |
| url | https://www.mdpi.com/1996-1944/16/10/3784 |
| work_keys_str_mv | AT chenfang multihazardresistantbehaviorofcfrpandpolyurearetrofittedreinforcedconcretetwocolumnpiersundercombinedcollisionblastloading AT tewodrosyyosef multihazardresistantbehaviorofcfrpandpolyurearetrofittedreinforcedconcretetwocolumnpiersundercombinedcollisionblastloading AT danielglinzell multihazardresistantbehaviorofcfrpandpolyurearetrofittedreinforcedconcretetwocolumnpiersundercombinedcollisionblastloading |