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Cable-Stay Bridges——Investigation of Cable Rupture

Journal of Traffic and Transportation Engineering 2016年第5期4卷 270-279页

作者： Nguyen Trong Nghia Vanja Samec Faculty of Civil Engineering University of Transport and Communication Hanoi 10000 Vietnam Global Director RM Bridge Bentley Systems Austria GmbH Graz 8010 Austria

As the bridge engineering community sets sails to use longer and longer spans, more and more sophisticated analysis models have to be used in the design process. One of the significant problems represents cable rupture of cable stays. The problem is also addressed in guidelines for cable-stayed bridge design such as PTI （Post-tensioning Institute） Recommendations and EC3 by quasi-static analyses using DAF （dynamic amplification factors） to account dynamic effects, which can be conducted instead ofnsing dynamic analysis. The results show that the value DAF depends on the cable rupture location and on the type and location of the examined state. dynamic time history analysis is recommended. Some projects examples are highlighted in the paper, where the importance of above mentioned topic has been investigated, following different regulations and approaches. Professional bridge analysis and design sottware solution RM Bridge has been used for all investigations. The application can fulfill all requirements and deliver expected and accurate results. In addition, RM Bridge Sottware also helps engineers as a tool to optimize structure design and increase resistance capacity for each element to ensure the structural safety in service stage.

关键词： Cable-stayed bridge dynamic non-linear analysis cable rupture.

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