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Steel and Composite Structures Volume 52, Number 2, July 25 2024 , pages 237-248 DOI: https://doi.org/10.12989/scs.2024.52.2.237 |
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Dynamic characteristics analysis of CBGSCC bridge with large parameter sample |
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Zhongying He, Yifan Song, Genhui Wang and Penghui Sun
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| Abstract | ||
| In order to make the dynamic analysis and design of improved composite beam with corrugated steel web (CBGSCC) bridge more efficient and economical, the parametric self-cyclic analysis model (SCAM) was written in Python on Anaconda platform. The SCAM can call ABAQUS finite element software to realize automatic modeling and dynamic analysis. For the CBGSCC bridge, parameters were set according to the general value range of CBGSCC bridge parameters in actual engineering, the SCAM was used to calculate the large sample model generated by parameter coupling, the optimal value range of each parameter was determined, and the sensitivity of the parameters was analyzed. The number of diaphragms effects weakly on the dynamic characteristics. The deck thickness has the greatest influence on frequency, which decreases as the deck thickness increases, and the deck thickness should be 20-25 cm. The vibration frequency increases with the increase of the bottom plate thickness, the web thickness, and the web height, the bottom plate thickness should be 17-23mm, the web thickness should be 13-17 mm, and the web height should be 1.65-1.7 5 m. Web inclination and Skew Angle should not exceed 30°C, and the number of diaphragms should be 3-5 pieces. This method can be used as a new method for structural dynamic analysis, and the importance degree and optimal value range of each parameter of CBGSCC bridge can be used as a reference in the design process. | ||
| Key Words | ||
| composite box girder with steel bottom plate-corrugated web-concrete deck bridge; dynamic characteristic; large sample parameters; python language; self-circulated analysis model; self-circulated analysis model | ||
| Address | ||
| Zhongying He:Department of Civil Engineering and Architecture, Henan University, Kaifeng, Henan, 475000, Republic of China Yifan Song:Department of Civil Engineering and Architecture, Henan University, Kaifeng, Henan, 475000, Republic of China Genhui Wang:Department of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730000, Republic of China Penghui Sun:Department of Civil Engineering and Architecture, Henan University, Kaifeng, Henan, 475000, Republic of China | ||