EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNS
Prestressed reinforced concrete structural components are very commonly used in construction of civilian and military structures. The prestressed components, such as reinfo...
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| Format: | Article |
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Sharif University of Technology
2019-02-01
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| Series: | مهندسی عمران شریف |
| Subjects: | |
| Online Access: | https://sjce.journals.sharif.edu/article_1447_d9d1169631ca719e75bec87be75353b3.pdf |
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| author | M. Ashra Khorasani A. Vatani Oskouei S. Madaani |
| author_facet | M. Ashra Khorasani A. Vatani Oskouei S. Madaani |
| author_sort | M. Ashra Khorasani |
| collection | DOAJ |
| description | Prestressed reinforced concrete structural components are very commonly used in construction of civilian and military structures. The prestressed components, such as reinforced concrete columns, beams, and bridge decks, outperform the non-prestressed components because of the following reasons. A prestressed member has higher structural stiffness and more load bearing capacity as well as better crack resistance compared to non-prestressed ones.This study focuses on effect of using prestressed cables in bridge piers. Different elements, such as the bridge height, prestressing loads, and compression capacity of concrete, are taken under investigation for a chosen sample case - ``forg'' bridge- located in south of Iran. To investigate the prestressed cables function in bridge piers with regard to aforementioned elements, the subject bridge is modeled in SAP software. After performing the spectral analysis, data for columns with and without the prestressed cables were collected. Acquired data were then analyzed using ABAQUS software. Results of this analysis show that prestressed concrete columns had less movement in all three axes (X, Y, and Z). Further studies also reveal that samples with prestressed cables had less damages compared to the non-prestressed ones. Studies also proved that increasing the prestressing load would result in less member displacements, less member defection, and also less stress in the section. These advantages are more effective in the direction of Y axis than
the other axes. As for the effect of the structure height, samples from shorter columns tend to have minor damage and stress and, in general, better behavior in comparison to the samples from longer columns.In addition, concrete compressive strength plays an important role in prestressed members behavior; however, uncontrolled increase in concrete compressive strength could have a negative effect on the structure behavior. |
| first_indexed | 2024-03-12T13:18:45Z |
| format | Article |
| id | doaj.art-aed79e90a18c45bd905f8964932f398d |
| institution | Directory Open Access Journal |
| issn | 2676-4768 2676-4776 |
| language | fas |
| last_indexed | 2024-03-12T13:18:45Z |
| publishDate | 2019-02-01 |
| publisher | Sharif University of Technology |
| record_format | Article |
| series | مهندسی عمران شریف |
| spelling | doaj.art-aed79e90a18c45bd905f8964932f398d2023-08-26T10:16:56ZfasSharif University of Technologyمهندسی عمران شریف2676-47682676-47762019-02-0134.24.212113110.24200/j30.2019.14471447EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNSM. Ashra Khorasani0A. Vatani Oskouei1S. Madaani2Faculty of Civil EngineeringTakestan Islamic Azad UniversityDept. of Civil Engineering Shahid Rajaee Teacher Training UniversityFaculty of Civil EngineeringTakestan Islamic Azad UniversityPrestressed reinforced concrete structural components are very commonly used in construction of civilian and military structures. The prestressed components, such as reinforced concrete columns, beams, and bridge decks, outperform the non-prestressed components because of the following reasons. A prestressed member has higher structural stiffness and more load bearing capacity as well as better crack resistance compared to non-prestressed ones.This study focuses on effect of using prestressed cables in bridge piers. Different elements, such as the bridge height, prestressing loads, and compression capacity of concrete, are taken under investigation for a chosen sample case - ``forg'' bridge- located in south of Iran. To investigate the prestressed cables function in bridge piers with regard to aforementioned elements, the subject bridge is modeled in SAP software. After performing the spectral analysis, data for columns with and without the prestressed cables were collected. Acquired data were then analyzed using ABAQUS software. Results of this analysis show that prestressed concrete columns had less movement in all three axes (X, Y, and Z). Further studies also reveal that samples with prestressed cables had less damages compared to the non-prestressed ones. Studies also proved that increasing the prestressing load would result in less member displacements, less member defection, and also less stress in the section. These advantages are more effective in the direction of Y axis than the other axes. As for the effect of the structure height, samples from shorter columns tend to have minor damage and stress and, in general, better behavior in comparison to the samples from longer columns.In addition, concrete compressive strength plays an important role in prestressed members behavior; however, uncontrolled increase in concrete compressive strength could have a negative effect on the structure behavior.https://sjce.journals.sharif.edu/article_1447_d9d1169631ca719e75bec87be75353b3.pdfprestressed concretebridgesdamagedisplacementlife line |
| spellingShingle | M. Ashra Khorasani A. Vatani Oskouei S. Madaani EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNS مهندسی عمران شریف prestressed concrete bridges damage displacement life line |
| title | EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNS |
| title_full | EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNS |
| title_fullStr | EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNS |
| title_full_unstemmed | EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNS |
| title_short | EFFECT OF PRESTRESSING ON CONCRETE BRIDGE COLUMNS |
| title_sort | effect of prestressing on concrete bridge columns |
| topic | prestressed concrete bridges damage displacement life line |
| url | https://sjce.journals.sharif.edu/article_1447_d9d1169631ca719e75bec87be75353b3.pdf |
| work_keys_str_mv | AT mashrakhorasani effectofprestressingonconcretebridgecolumns AT avatanioskouei effectofprestressingonconcretebridgecolumns AT smadaani effectofprestressingonconcretebridgecolumns |