| 确定斜拉桥合理成桥状态的分步施工法 |
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| 引用本文： | 杜光乾,乔永进,刘永建,赵胜利,刘京红.确定斜拉桥合理成桥状态的分步施工法[J].施工技术,2007(Z1). |
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| 作者姓名： | 杜光乾 乔永进 刘永建 赵胜利 刘京红 |
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| 作者单位： | 河北农业大学城乡建设学院 河北保定071001(杜光乾，赵胜利，刘京红)，河北建设集团 河北保定071001(乔永进，刘永建) |
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| 摘 要： | 根据斜拉桥结构特性和施工控制的需要,提出确定合理成桥状态的分步张拉法,即首先模拟斜拉桥实际施工过程,计算出初始张拉索力,然后建立索力与主梁内力的数学模型,以成桥时主梁弯矩为控制目标,以最小二乘法优化出全桥最终索力,保证了结构的受力合理和安全。
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| 关 键 词： | 斜拉桥 索力 优化 |
The Multiple Step Stretching Method in the Confirming the Ideal State of Cable-stayed Bridges |
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| DU Gang-qian,QIAO Yong-jin,LIU Yong-jian,ZHAO Sheng-li,LIU Jing-hong.The Multiple Step Stretching Method in the Confirming the Ideal State of Cable-stayed Bridges[J].Construction Technology,2007(Z1). |
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| Authors: | DU Gang-qian QIAO Yong-jin LIU Yong-jian ZHAO Sheng-li LIU Jing-hong |
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| Affiliation: | DU Gang-qian~1,QIAO Yong-jin~2,LIU Yong-jian~2,ZHAO Sheng-li~1,LIU Jing-hong~1 |
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| Abstract: | According to the construction of cable-stayed bridges and construction control,this article brings forward the multiple step stretching method in the confirming the ideal state of cable-stayed bridges.First, the construction tensioning force will be calculated,and the mathematics model about the initial construction tensioning force and the internal force of the girder will be built.Finally,the tensioning force will be optimized in the light-of the leash least-squares method. |
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| Keywords: | cable-stayed bridge cable force optimum |
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