Title: Study on dynamic characteristics of continuous box girder with corrugated steel webs
Abstract: Currently the dynamic research on box girder bridge with corrugated steel webs mainly focuses on simply supported beams but less on continuous box beam.Therefore,the model test of prestressed concrete continuous box girder with corrugated steel webs was designed and manufactured,and ANSYS finite element model of the box girder was built to analyze its dynamic characteristics.DHDAS dynamic signal testing analysis system was adopted to test its dynamic characteristics in order to prove the correctness of the theoretical analysis,and various orders of vertical bending vibration modes and vibration frequencies are identified according to the measured data.The comparation between measured data and results of finite element analysis of the model test beam shows that the difference is small.The influence of diaphragms in various position on dynamic characteristics of the prestressed concrete continuous box girder with corrugated steel webs was also studied.Results show that bearing diaphragms have the biggest influence on dynamics characteristics of the box girder,while the mid-diaphragms have little influence basically.So reducing mid-diaphragms appropriately can save construction costs of bridges in practice.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 1
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