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| Research on the Dynamic Characteristics of Multi-room Single Box Composite Girder with Corrugated Steel Webs |
| ZHENG Shang-min1, WAN Shui2, CHENG Hai-gen1 |
| (1.East China Jiaotong University, Nanchang, Jiangxi 330013, China；2. Southeast University, Nanjing, Jiangsu 210096, China) |
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Abstract Abstract：Research purposes： In order to study the difference of dynamic characteristics between composite box girder with corrugated steel webs and concrete box girder, two test girders are designed which span is 5.2 m, and the three dimension finite element(FE) models of two test girders are built with ANSYS FE software, the model experiment and finite element analysis(FEA) are combined to study the two test girders, moreover, the effects of diaphragm setting on torsional vibration frequencies between multi-room single box composite girder with corrugated steel webs and concrete box girder, is analyzed. Research conclusions：（1）The datum between test measured and FEA analysis show that there is little difference, which proves that the test datum is correct, and the FEA method is reasonable. （2）The fundamental vibration frequency of multi-room single box composite girder with corrugated steel webs is slightly bigger than that of concrete box girder, while its high order vertical bending vibration frequencies are all smaller than that of concrete box girder. （3）The torsional vibration characteristic of multi-room single box composite girder with corrugated steel webs is more sensitive to diaphragm setting than concrete box girder. （4）The setting position of diaphragm for multi-room single box composite girder with corrugated steel webs has a more effect on torsional vibration frequency than concrete box girder. （5）The research results provide some references for dynamics analysis in multi-room single box composite girder with corrugated steel webs.
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Received: 25 May 2017
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2017, Vol. 34 
