Abstract：Research purposes:For the railway across dangerous mountainous area where there are deep canyons, a large number of long-span and high pier bridge is necessary. With the increase of running speed of newly-built railway and height of pier, in order to meet the dynamic performance of bridges, the selection of different types of high pier according to engineering geological characteristics of mountainous terrain is more important to reduce work quantities of pier and to optimize its economic indicator. In this paper, a study is made on the adaptability of high pier for railway bridge to master the mechanical characteristics, application range of rational height and economic indicator of different types of high piers. Research conclusions:(1) This paper puts forward the economical and reasonable application scope of different high pier types: when H ≤80 m, single slope hollow pier should be the first choice; when 100 m>H> 80 m, the broom-type pier is more economical; when H>100 m, A- type (including herringbone) pier has obvious economic advantage; herringbone pier is suitable for high pier bridge with a height of 100~ 120 m, when H>120 m, A-type high pier should be the preferred choice. (2) Choice of reasonable foundation type for A-type (including herringbone) pier under different geological conditions in the mountainous areas: for the location where topographical slope is relatively steep and geologic condition is relatively good, A-type slant-legged separated foundation with unequal height may be used; for the location where the topographical slope is relatively gentle and the geological condition is relatively poor, A-type pier dumbbell foundation or monolithic foundation may be used. (3) The research achievement in this paper has a guiding significance to rational selection of pier type of railway bridge in the dangerous mountainous area.
陈思孝，吴再新，钟亚伟. 铁路桥梁高墩适应性研究[J]. 铁道工程, 2014, 31(11): 59-64.
CHEN Si-xiao, WU Zai-xin,ZHONG Ya-wei. Research on the Adaptability of High Pier Railway Bridge. 铁道工程, 2014, 31(11): 59-64.
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