| 大跨度拱桥吊装施工线形控制研究 |
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| 引用本文： | 周栋梁,华强.大跨度拱桥吊装施工线形控制研究[J].铁道科学与工程学报,2009,6(6). |
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| 作者姓名： | 周栋梁 华强 |
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| 作者单位： | 汝郴高速公路建设开发有限公司,湖南,郴州,423000 |
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| 摘 要： | 以某大桥为例,探讨大跨度拱桥吊装施工线形控制方法.根据拱肋预制节段吊装就位过程的特点,提出刚性一弹性索法结合正装迭代法进行吊装过程理论分析,以得到拱肋就位坐标;通过事先在拱肋预制节段中布设坐标观测点对拱肋吊装过程和拱上建筑加载过程中的变形状况进行现场监测.监测结果表明:该大桥各圈拱肋的合拢线形与理论线形吻合良好,其高程误差符合相关规范的要求.通过对该桥施工过程进行严密监控,确保工程质量和施工安全.该桥的成功建成表明上述方法具有较好的适应性,可供类似桥梁参考.
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| 关 键 词： | 拱桥 缆索吊装 刚性-弹性索法 施工安全 线形控制 |
Analysis and construction control of a large span arch bridge |
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| ZHOU Dong-liang
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HUA Qiang.Analysis and construction control of a large span arch bridge[J].Journal of Railway Science and Engineering,2009,6(6). |
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| Authors: | ZHOU Dong-liang HUA Qiang |
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| Institution: | ZHOU Dong-liang,HUA Qiang(Construction , Development of Ruchen Expressway Co.Ltd,Chenzhou 423000,China) |
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| Abstract: | The configuration controlling measures of large span arch bridges were discussed by taking the construction of certain bridge as an example.According to the actual lifting and assembling process of the precast segments of the arch ribs,a theoretical analysis method is called rigid-elastic cable method was proposed for acquiring the installing coordinates of precast arch rib segments.Observation points for three dimensional coordinates gauges were installed prior to the lifting and assembling of the precast ... |
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| Keywords: | arch bridge lifting and assembling with cables rigid-elastic cable method construction safety line shape control |
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