Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads
The bond strength of concrete members at reversed cyclic loads is quite different from that of the concrete members at monotonic loads. Reversed cyclic loads produce a progressive bond deterioration that can lead to failure at cyclic stress levels lower than the ultimate stress at monotonic loads. I...
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| Дата: | 2015 |
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| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут проблем міцності ім. Г.С. Писаренко НАН України
2015
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| Назва видання: | Проблемы прочности |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/173282 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads / J.-Y. Lee, K.-H. Kim, S.-W. Kim, H. Choi // Проблемы прочности. — 2015. — № 1. — С. 202-211. — Бібліогр.: 21 назв. — англ. |
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irk-123456789-1732822020-11-29T01:27:09Z Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads Lee, J.-Y. Kim, K.-H. Kim, S.-W. Choi, H. Научно-технический раздел The bond strength of concrete members at reversed cyclic loads is quite different from that of the concrete members at monotonic loads. Reversed cyclic loads produce a progressive bond deterioration that can lead to failure at cyclic stress levels lower than the ultimate stress at monotonic loads. In addition, the structural behavior of concrete members at dominant reversed loads reveals a dramatic reduction of energy dissipation in the hysteresis region due to a severe pinch effect. A method was proposed to predict the structural behavior of concrete members failing in bond after flexural yielding. The method takes into account the bond deterioration due to the degradation of concrete in the postyield range. To verify the bond behavior by the proposed method, predicted results were compared with the experimental data for concrete members at reversed cyclic loads, cited in the literature. Comparison of the experimental and calculated bond behavior of examined concrete members showed reasonable agreement. Прочность сцепления в бетонных элементах при знакопеременных циклических нагрузках существенно отличается от таковой при монотонных нагрузках. Знакопеременные нагрузки вызывают постепенную потерю прочности сцепления, что может приводить к разрушению при уровнях циклических напряжений ниже, чем предельное напряжение при монотонных нагрузках. Структурные изменения в бетонных элементах при преобладающих знакопеременных нагрузках свидетельствуют о резком снижении энергии диссипации в зоне гистерезиса за счет выраженного пинч-эффекта. Предложен метод прогнозирования структурных изменений в бетонных элементах при потере прочности сцепления в результате пластической деформации изгиба. В методе учитывают потерю прочности сцепления вследствие разрушения бетона на стадии течения. Согласно предложенному методу, для проверки изменения прочности сцепления прогнозируемые результаты сравнивали с экспериментальными данными для бетонных элементов при знакопеременных циклических нагрузках, приводимых в литературе. В результате получено их удовлетворительное согласование. 2015 Article Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads / J.-Y. Lee, K.-H. Kim, S.-W. Kim, H. Choi // Проблемы прочности. — 2015. — № 1. — С. 202-211. — Бібліогр.: 21 назв. — англ. 0556-171X http://dspace.nbuv.gov.ua/handle/123456789/173282 539.4 en Проблемы прочности Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Научно-технический раздел Научно-технический раздел |
| spellingShingle |
Научно-технический раздел Научно-технический раздел Lee, J.-Y. Kim, K.-H. Kim, S.-W. Choi, H. Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads Проблемы прочности |
| description |
The bond strength of concrete members at reversed cyclic loads is quite different from that of the concrete members at monotonic loads. Reversed cyclic loads produce a progressive bond deterioration that can lead to failure at cyclic stress levels lower than the ultimate stress at monotonic loads. In addition, the structural behavior of concrete members at dominant reversed loads reveals a dramatic reduction of energy dissipation in the hysteresis region due to a severe pinch effect. A method was proposed to predict the structural behavior of concrete members failing in bond after flexural yielding. The method takes into account the bond deterioration due to the degradation of concrete in the postyield range. To verify the bond behavior by the proposed method, predicted results were compared with the experimental data for concrete members at reversed cyclic loads, cited in the literature. Comparison of the experimental and calculated bond behavior of examined concrete members showed reasonable agreement. |
| format |
Article |
| author |
Lee, J.-Y. Kim, K.-H. Kim, S.-W. Choi, H. |
| author_facet |
Lee, J.-Y. Kim, K.-H. Kim, S.-W. Choi, H. |
| author_sort |
Lee, J.-Y. |
| title |
Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads |
| title_short |
Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads |
| title_full |
Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads |
| title_fullStr |
Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads |
| title_full_unstemmed |
Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads |
| title_sort |
bond strength deterioration of reinforced and prestressed concrete members at reversed cyclic loads |
| publisher |
Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| publishDate |
2015 |
| topic_facet |
Научно-технический раздел |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/173282 |
| citation_txt |
Bond Strength Deterioration of Reinforced and Prestressed Concrete Members at Reversed Cyclic Loads / J.-Y. Lee, K.-H. Kim, S.-W. Kim, H. Choi // Проблемы прочности. — 2015. — № 1. — С. 202-211. — Бібліогр.: 21 назв. — англ. |
| series |
Проблемы прочности |
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AT leejy bondstrengthdeteriorationofreinforcedandprestressedconcretemembersatreversedcyclicloads AT kimkh bondstrengthdeteriorationofreinforcedandprestressedconcretemembersatreversedcyclicloads AT kimsw bondstrengthdeteriorationofreinforcedandprestressedconcretemembersatreversedcyclicloads AT choih bondstrengthdeteriorationofreinforcedandprestressedconcretemembersatreversedcyclicloads |
| first_indexed |
2023-10-18T22:33:45Z |
| last_indexed |
2023-10-18T22:33:45Z |
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1796155841381924864 |