军粮城北站桥上岔区纵连底座结构设计研究

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Abstract Research purposes:The Junliangcheng North Station of the Tianjin － Qinhuangdao Passenger Dedicated Line is located on the Tanguxi Bridge crossing the Beijing － Tianjin － Tangshan Highway． The CRTS Ⅱ slab track with longitudinal connected concrete base is applied in ordinary section and the continuous short rigid frame bridge is applied in the turnout area for laying the seamless turnout on the longitudinal connected concrete base． In order to solve the problem of the complicated loading on structures caused by the longitudinal connected base，it is necessary to build the model for analyzing the loading on the ballastless turnout，the turnout slab and the piers to direct the structure design．

Research conclusions:By the means of building the track － bridge － pier integrated model for the rail，turnout slab，concrete base，girder，pier and abutment，the load bearing characteristic of the longitudinal connected concrete base is obtained． It shows the longitudinal connected concrete base is mainly effected by the temperature force and braking force．Application of stiffness reduction theory and limit state design method for the longitudinal connected concrete base is an effective supplement of the previous study on the concrete basein turnout area on bridge． It can provide the reference to the similar works in the future．

Key words： short rigid frame bridge turnout on bridge longitudinal connected

Received: 25 May 2012

PACS:

U41

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	XU Ling － yan

Cite this article:

XU Ling － yan. Research on Design of Structure of Longitudinal Connected Concrete Base in Turnout Area on Junliangcheng North Station Bridge[J]. 铁道工程学报, 2012, 29(10): 47-51.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2012/V29/I10/47

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