Abstract：Research purposes：The coastal railways of Ningbo-Taizhou-Wenzhou and Wenzhou-Fuzhou are the passenger dedicated lines constructed in the first batch project in China, and now open to traffic. There are lots of the bridges built on soft soil foundation with special and complicated structures for these two railways due to the complicated natural and geographic conditions. The dynamic tests are done to the typical bridge and the comparison is made between the tested results and calculation results for analysis and evaluation of the dynamic performance of the bridge structure.
Research conclusions： From doing the dynamic test to the bridges and making analysis and evaluation of the indexes of dynamic performance of the bridge structure, such as deformation, displacement, natural vibration frequency and acceleration, it is shown the coastal railway bridges are good in lateral and vertical stiffness and the dynamic performance. The Ningbo-Taizhou-Wenzhou and Wenzhou-Fuzhou can meet the requirements of the safety and stability performance for running 120 km/h test freight train, 250 km/h CRH2-010A comprehensive monitoring train and 250 km/h EMU.
Yang Yiqian, Liu Peng, et al. Dynamic Detection Report of Wenzhou-Fuzhou Railway(in Zhejiang province and Fuzhou province)[J]. Beijing: China Academy of Railway Sciences, 2009.
Yang Yiqian, et al. Experimental Study on the Dynamic Behaviors of Ballastless Track Railway Bridge with Common Spans[J]. China Railway Science, 2008(4): 47-51.
2010, Vol. 27 
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