Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams
The free vibration characteristics of steel-concrete composite continuous beams (SCCCBs) are analyzed based on the Euler–Bernoulli beam theory. A modified dynamic direct stiffness method has been developed, which can be used to analyze the SCCCBs with some lumped masses and elastic boundary conditio...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5577276 |
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| _version_ | 1832558892121325568 |
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| author | Qikai Sun Nan Zhang Guobing Yan Xinqun Zhu Xiao Liu Wangwang Li |
| author_facet | Qikai Sun Nan Zhang Guobing Yan Xinqun Zhu Xiao Liu Wangwang Li |
| author_sort | Qikai Sun |
| collection | DOAJ |
| description | The free vibration characteristics of steel-concrete composite continuous beams (SCCCBs) are analyzed based on the Euler–Bernoulli beam theory. A modified dynamic direct stiffness method has been developed, which can be used to analyze the SCCCBs with some lumped masses and elastic boundary conditions. The results obtained by the proposed method are exact due to the elimination of approximated displacement and force fields in derivation. The proposed method is verified by comparing its results with those obtained by ANSYS software and laboratory tests. Then, the influencing factors on the reduction of natural frequency are analyzed and discussed in detail using the proposed method. The results show that stronger interfacial interaction results in higher values of natural frequency as well as larger steel subbeam and thinner concrete slab. The smaller the natural frequency of the SCCCBs is, the more significant effect the interfacial interaction on the natural frequency is. The reduction of natural frequency is not affected by the different numbers of spans but the equal single-span length and various ratios of the side span to the main span but equal total length, but it is influenced by the extra single-span length and different ratios of the side span to the main span but equal main span length. And it is only affected by bending stiffness. Furthermore, the reasonable ratio of the side span to the main span is 0.9∼1.0. |
| format | Article |
| id | doaj-art-c2dba2a6980c47f2b79723959997b94e |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c2dba2a6980c47f2b79723959997b94e2025-02-03T01:31:22ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/55772765577276Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous BeamsQikai Sun0Nan Zhang1Guobing Yan2Xinqun Zhu3Xiao Liu4Wangwang Li5School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaRailway Engineering Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081, ChinaSchool of Civil and Environmental Engineering, University of Technology Sydney (UTS), Sydney NSW 2007, AustraliaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaThe free vibration characteristics of steel-concrete composite continuous beams (SCCCBs) are analyzed based on the Euler–Bernoulli beam theory. A modified dynamic direct stiffness method has been developed, which can be used to analyze the SCCCBs with some lumped masses and elastic boundary conditions. The results obtained by the proposed method are exact due to the elimination of approximated displacement and force fields in derivation. The proposed method is verified by comparing its results with those obtained by ANSYS software and laboratory tests. Then, the influencing factors on the reduction of natural frequency are analyzed and discussed in detail using the proposed method. The results show that stronger interfacial interaction results in higher values of natural frequency as well as larger steel subbeam and thinner concrete slab. The smaller the natural frequency of the SCCCBs is, the more significant effect the interfacial interaction on the natural frequency is. The reduction of natural frequency is not affected by the different numbers of spans but the equal single-span length and various ratios of the side span to the main span but equal total length, but it is influenced by the extra single-span length and different ratios of the side span to the main span but equal main span length. And it is only affected by bending stiffness. Furthermore, the reasonable ratio of the side span to the main span is 0.9∼1.0.http://dx.doi.org/10.1155/2021/5577276 |
| spellingShingle | Qikai Sun Nan Zhang Guobing Yan Xinqun Zhu Xiao Liu Wangwang Li Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams Shock and Vibration |
| title | Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams |
| title_full | Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams |
| title_fullStr | Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams |
| title_full_unstemmed | Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams |
| title_short | Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams |
| title_sort | exact dynamic characteristic analysis of steel concrete composite continuous beams |
| url | http://dx.doi.org/10.1155/2021/5577276 |
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