| 大跨径刚构桥合龙顶推力优化计算 |
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| 引用本文： | 蔡军,杨蕾,武利兵. 大跨径刚构桥合龙顶推力优化计算[J]. 交通科技与经济, 2013, 15(1): 100-102 |
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| 作者姓名： | 蔡军 杨蕾 武利兵 |
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| 作者单位： | 中铁九局集团有限公司桥梁分公司,辽宁沈阳,110000 |
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| 摘 要： | 大跨径连续刚构因为经济、施工简单和受力合理等优点，被我国大量采用，但是大跨径刚构桥成桥后混凝土收缩徐变和长期作用及温度变化将对桥梁主梁和桥墩的变形有较大影响。文中结合工程实例，充分考虑确定顶推力的主要因素，埘连续刚构桥合龙前顶推量取值进行分析研究，提高桥梁结构的受力性能。
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| 关 键 词： | 顶推力 收缩徐变 合龙温差 大跨径刚构桥 |
The optimization calculation of long-span rigid frame bridge closure jacking force |
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| CAI Jun , YANG Lei , WU Li-bing. The optimization calculation of long-span rigid frame bridge closure jacking force[J]. Technology & Economy in Areas of Communications, 2013, 15(1): 100-102 |
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| Authors: | CAI Jun YANG Lei WU Li-bing |
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| Affiliation: | (China Railway No.9 Group Co.Ltd,Bridge Branch,Shenyang 110000,China) |
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| Abstract: | Long span continuous rigid frame are generally adopted in China because of the economical reason, the simple construction and reasonable force. But the shrinkage and creep and long-term temperature change will impact the bridge girder and piers deformation. With engineering examples, it presents the main factors that determine the jacking force, and analyzes the continumous rigid frame bridge closure pushing in order to improve the performance of the force of the bridge structure. |
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| Keywords: | jacking force shrinkage and creep closure temperature difference long-span rigid frame bridge |
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