2010, Volume 12, Issue 7
Strategic Study of CAE >> 2010, Volume 12, Issue 7
Saddle pushing analysis in suspension bridge construction
1. Southwest Jiaotong University, Chengdu 610031, China;
2. Zhejiang Provincial Construction Headquarters of Zhoushan Islands Link Project, Zhoushan, Zhejiang 316000, China
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Abstract
Some problems existing in saddle pushing, such as the pre-displacement control principle, the relation of tower top displacement and tower bottom stress, the method of determining saddle pushing stages and pushing values, are discussed. The reasonable model of saddle equilibrium condition and the pre-displacement calculation method are expounded. Combining with saddle pushing analysis of Baling River Bridge, the conclusion that the excess pushing scheme can increase the interval of each pushing and reduce pushing times is obtained. The cases following saddle pushing are the unfavorable conditions for main cables anti-sliding checking.
Keywords
suspension bridge ; saddle pushing ; saddle equilibrium condition ; tower top displacement ; tower bottom stress
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References
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