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| Research on the Design of Herringbone High Piers of Chongqing - Lichuan Railway Xinqiao Bridge |
| WU Zai - xin，CHEN Si - xiao |
| (China Railway Eryuan Engineering Group Co. Ltd，Chengdu，Sichuan 610031，China) |
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Abstract Abstract : Research purposes : An innovative application as herringbone high piers is on Chongqing - Lichuan railway Xinqiao bridge，there is no existed engineering case that could be referred to. This paper，by analysis of finite element software model built on the Ansys and Midas platform，goes deeply into the complicated mechanics of herringbone high piers. Additionally，the economical indexes of three types of piers with different height are compared comprehensively， the design principle of herringbone high piers is revealed to help greatly to the Xinqiao bridge design. Research conclusions :( 1) The herringbone high pier has a similar longitudinal stress but a more complicated transverse stress to traditional piers. (2) The strength calculating method of herringbone high piers should be derived based on unsymmetrical bending theory for the inapplicability of the existed railway codes. (3 ) The botom sections of legs are the most important parts for the design of heringbone high piers which could influence greatly on the economical index. (4) The herringbone high piers have lower quantities of concrete and a more economical investment while being applied on the railway beam bridges with piers higher than 100 m compared with traditional type pier. So the spread application of heringbone high piers is significant for the development of railway beam bridges.
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Received: 07 September 2016
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2016, Vol. 33 
