Study on dynamic responses and impact factors of long span deck type CFST arch bridge under vehicle loads.

The difference with the deck at the center of the span is that the deflection impact coefficient at the L/4 section of the deck shows an increasing trend after exceeding the speed of 28 m/s, which is the opposite of the decreasing trend at the mid-span.

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The reduction of the maximum dynamic effect at the main vault caused by the increase of column stiffness is larger than the reduction of the maximum static effect, thus showing an overall trend of becoming smaller and smaller.

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