Journal of Highway and Transportation Research and Development
 
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Journal of Highway and Transportation Research and Development  2015, Vol. 9 Issue (1): 63-70    DOI: 10.3969/j.issn.1002-0268.2014.04.015
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Geometric Closure Control of the Main Channel Girder of Jiaxing-Shaoxing Bridge
JIA Shao-min, ZHAO Lei, LI Bing
School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China
Abstract  The main channel girder of Jiaxing-Shaoxing Bridge is the first six-tower, separate-deck, space four-cable-plane cable-stayed bridge in the world. The main bridge has seven closures, and the closure scheme is complex. Considering the problems in traditional temperature closure, this study introduced a new closure process called geometric closure based on geometric construction control. Then, this study introduced a closure attitude adjustment calculation method and enumerated the considerations in selecting geometric closure for the main channel bridge. Finally, the operating details that implement geometric closure for Jiaxing-Shaoxing Bridge was introduced. Geometric closure can eliminate the additional effect of temperature and ensure the established closure time. The measurement data show that the profile of the main girder of Jiaxing-Shaoxing Bridge is smooth and that the error is small with geometric closure. As a result, the construction control work achieves satisfactory results.
Key wordsbridge engineering      multi-tower cable stayed bridge      geometric closure control      analysis of profile error upon completion state      jacking force     
Received: 13 September 2013     
Fund:Supported by the Ministry of Transport Science and Technology Project (No.2010353333130)
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JIA Shao-min
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LI Bing
Cite this article:   
JIA Shao-min,ZHAO Lei,LI Bing. Geometric Closure Control of the Main Channel Girder of Jiaxing-Shaoxing Bridge[J]. Journal of Highway and Transportation Research and Development, 2015, 9(1): 63-70.
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http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/10.3969/j.issn.1002-0268.2014.04.015     OR     http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2015/V9/I1/63
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