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| RESEARCH ON SIMPLY SUPPORTED BEAMS WITH EQUAL SPAN ON HIGH SPEED RAILWAYS |
| TIAN Jie, XU Ke-bin |
| School of Civil Engineering, Northern Jiaotong University |
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Abstract The bridge's dynamic features and train's running comfort under resonant speed of simply supported beams with equal spans are analyzed. Through calculation, we know that the simply supported beams with equal spans and the trains will have one to two resonant speeds during high speed, the bridge's dynamic factors between different spans have little change, and the train's running comfort differs a little during no.1 to no.4 while, from no.5 span, it becomes stable. This means that the railway simply supported beams with equal spans arc suitable used for extra-long bridges.
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Received: 01 April 2001
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| [1]高速铁路中小跨度桥梁桥式合理布置和合理结构的研究[R].北京:北京交通大学土建学院,1996.
[2]秦沈客运专线常用跨度桥梁耦合分析[R].北京:铁科院铁建所桥梁室,1999. |
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2001, Vol. 18 
