Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder
The experimental work presents results on the fatigue performance of composite beams in the negative moment region and the changes of stiffness and deformation of composite beams under repeated loads; fatigue tests were carried out on two double-layer composite beams. The fatigue performance of comp...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8879746 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560337235214336 |
|---|---|
| author | Pu Gao Kuan Li Yuanxun Zheng |
| author_facet | Pu Gao Kuan Li Yuanxun Zheng |
| author_sort | Pu Gao |
| collection | DOAJ |
| description | The experimental work presents results on the fatigue performance of composite beams in the negative moment region and the changes of stiffness and deformation of composite beams under repeated loads; fatigue tests were carried out on two double-layer composite beams. The fatigue performance of composite beams with different reinforcement ratios under complete shear connection and the variation of deflection, strain of the reinforcement, strain of steel beam, and crack growth under fatigue load were obtained. The results showed that the fatigue resistance performance of concrete slab with low reinforcement ratio was much lower than that of concrete slab with high reinforcement ratio whereas, under the fatigue load, the stress of the welding nail in the negative moment region was small and the slip was almost negligible. The degradation of stiffness and the development of cracks were mainly due to the degradation of bond-slip between the concrete and reinforcement. The fatigue failure mode was the fracture of the upper reinforcement in negative moment region. The results obtained in this study are helpful in the design of composite beam. |
| format | Article |
| id | doaj-art-aec05124fdfe4ab6b5e98cca13032547 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-aec05124fdfe4ab6b5e98cca130325472025-02-03T01:27:54ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88797468879746Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box GirderPu Gao0Kuan Li1Yuanxun Zheng2Technology Center, China Construction Sixth Engineering Division Corp. Ltd., Tianjin 300451, ChinaSchool of Water Conservancy Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, ChinaSchool of Water Conservancy Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, ChinaThe experimental work presents results on the fatigue performance of composite beams in the negative moment region and the changes of stiffness and deformation of composite beams under repeated loads; fatigue tests were carried out on two double-layer composite beams. The fatigue performance of composite beams with different reinforcement ratios under complete shear connection and the variation of deflection, strain of the reinforcement, strain of steel beam, and crack growth under fatigue load were obtained. The results showed that the fatigue resistance performance of concrete slab with low reinforcement ratio was much lower than that of concrete slab with high reinforcement ratio whereas, under the fatigue load, the stress of the welding nail in the negative moment region was small and the slip was almost negligible. The degradation of stiffness and the development of cracks were mainly due to the degradation of bond-slip between the concrete and reinforcement. The fatigue failure mode was the fracture of the upper reinforcement in negative moment region. The results obtained in this study are helpful in the design of composite beam.http://dx.doi.org/10.1155/2020/8879746 |
| spellingShingle | Pu Gao Kuan Li Yuanxun Zheng Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder Advances in Civil Engineering |
| title | Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder |
| title_full | Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder |
| title_fullStr | Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder |
| title_full_unstemmed | Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder |
| title_short | Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder |
| title_sort | experimental study on fatigue performance of negative bending moment of steel concrete continuous composite box girder |
| url | http://dx.doi.org/10.1155/2020/8879746 |
| work_keys_str_mv | AT pugao experimentalstudyonfatigueperformanceofnegativebendingmomentofsteelconcretecontinuouscompositeboxgirder AT kuanli experimentalstudyonfatigueperformanceofnegativebendingmomentofsteelconcretecontinuouscompositeboxgirder AT yuanxunzheng experimentalstudyonfatigueperformanceofnegativebendingmomentofsteelconcretecontinuouscompositeboxgirder |