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摘要:
Design details of RC hollow bridge piers for 6 major railway bridges and 26 major highway bridges in China were analyzed. Pier height, web thickness to section width ratio, web width to thickness ratio and aspect ratio of pier used in China were reviewed. The experimental researches and theoretical analyses of seismic behaviors for RC hollow piers in New Zealand, America, Europe, Japan and China were summarized, and the existing problems and future research directions were pointed out. Analysis result shows that high piers with aspect ratio larger than 10.0, thin walled piers with web thickness to section width ratio less than 0.2 or web width to thickness ratio larger than 10.0 are commonly used in large bridges in China. Most of the researches have focused on the seismic behaviors of low and medium height piers with aspect ratio less than 8.0, and few researches have been conducted for piers with web thickness to section width ratio less than 0.2 or web width to thickness ratio larger than 5.0. There is still not any reasonable shear strength and seismic deformation analysis model for hollow bridge piers. Some important research directions in the future include anti-cracking measures of hollow bridge pier under the water, residual displacement control of hollow bridge pier, improving the seismic behavior of hollow bridge pier by new structures and materials, and researching the seismic behavior of hollow bridge pier by modern experimental techniques.
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