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.
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.
[1] GE Yao-jun. Segmental Construction Analysis and Control of Bridges[M].Beijing:China Communications Press, 2003(in Chinese)
[2] LIU Jun-sheng, WANG Hong, Wang Zhi-long, et al. Main Span Closure Technology in Large-span Combination Beam Cable-stayed Bridge[J].Technology of Highway and Transport, 2010, 26(4):67-70(in Chinese)
[3] LIU Sheng-qi, JIANG Ben-jun. Construction Techniques for Closure of Midspan Steel Girder of Wuhan Er'qi Changjiang River Bridge[J]. Bridge Construction, 2012, 42(4):7-13(in Chinese)
[4] TIAN Wei-dong, LIU Jun-feng. Construction Techniques for Closure of Main Bridge of South Feihe River Bridge in Hefei[J].Bridge Construction, 2012, 42(1):126-130(in Chinese)
[5] MENG Fan-zeng. Study on Closrue Scheme and Its Influence on Structural Stage for Multi-Pylon Cable-stayed Bridges[D]. Chengdu:Southwest Jiaotong University, 2012(in Chinese)
[6] QIN Shun-quan. Bridge Construction Contr-the Theory of Unstressed state Control Method and Practice[M].Beijing:China Communications Press, 2007(in Chinese)
[7] QIN Shun-quan. Unstressed State Control Method for Bridges Constructed in Stages[J]. Bridge Construction, 2008(1):8-14(in Chinese)
[8] YANG Xing-wang. Research on the Nonlinear Behavior of Long-Span Cable-stayed Bridges Considring overall Construction Process[D]. Chengdu:Southwest Jiaotong University, 2007(in Chinese)
[9] ZHANG Qing-hua, BU Yi-zhi, LI Qiao. Advances of Long-span Cable-stayed Bridge Construction Co-ntrol[C]//Proceedings of 20th National Bridge Conference. Beijing:China Communications Press, 2012:521-529(in Chinese)
[10] LI Qiao, BU Yi-zhi, ZHANG Qing-hua. Whole-Procedure Adaptive Construction Control System Based on Geometry Control Method[J]. China Civil Engineering Journal, 2009,42(7):69-77(in Chinese)
[11] LI Qiao, BU Yi-zhi, ZHANG Qing-hua, et al. Introduction and Application of Whole-procedure Construction of Long-Span Cable-stayed Bridge Based on Geometry Control Method[M].Chengdu:Southwest Jiaotong University Press, 2009(in Chinese)
[12] QIN Shun-quan. Application of Unstressed State Control Method to Calculation for Erection of Cable-stayed Bridge[J].Bridge Construction, 2008(2):13-16(in Chinese)
[13] LIANG Peng, XIAO Ru-cheng, XU Yue. Assembled Geometry and Unstrained Geometry of Super Long-span Cable-stayed Bridges[J]. Journal of Chang'an University:Natural Science Edition, 2006, 26(4):49-53(in Chinese)
[14] ZHANG Jian-min, XIAO Ru-cheng. Study on The Pre-arranged Angle of Girders in Construction State for a Thousand-meter Scale Cable-stayed Bridge[J].Chinese Journal of Computational Mechanics, 2005, 22(5):618-622. (in Chinese)
[15] Jiaxing-Shaoxing Cross River Bridge Construction Headquarters. Special Construction Specifications of Jiaxing-Shaoxing Bridge[S]. 2009(in Chinese)
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