| 框架桥顶进施工中主体结构状态控制措施 |
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| 引用本文： | 张云琪.框架桥顶进施工中主体结构状态控制措施[J].国防交通工程与技术,2014(1):61-63. |
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| 作者姓名： | 张云琪 |
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| 作者单位： | 中铁十九局集团有限公司设备运输部,辽宁辽阳101100 |
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| 摘 要： | 介绍了辽阳市新华街下穿既有沈大铁路立交框架桥顶进施工中，对主体结构的启动、就位、方向和高程等四种状态控制的目的和方法。利用这些方法，对主体结构顶进状态进行了控制，防止了抬头、扎头现象及方向出现偏差，高质量地完成了框架桥的施工任务，各项偏差指标均满足验收规范的要求。
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| 关 键 词： | 框架桥 顶进施工 状态控制 抬头 扎头 高程检测 方向偏差 |
Measures for the State-Control of the Main Structure of the Frame-Type Bridge During Its Jack-in Construction |
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| Zhang Yunqi.Measures for the State-Control of the Main Structure of the Frame-Type Bridge During Its Jack-in Construction[J].Traffic Engineering and Technology for National Defence,2014(1):61-63. |
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| Authors: | Zhang Yunqi |
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| Institution: | Zhang Yunqi (The Equipment Transporting Department of the 19th Bureau Group of the Zhongtie Corporation of China,Liaoyang 101100,China ) |
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| Abstract: | In the paper introduced are the aims and methods for the four-state operation of the starting, positioning, directional and elevation control of the main structure during the jack-in construction of the frame-type bridge underrunning the existing Shen-Da Railway at Xinhua Street of Liaoyang City. Making use of the above-mentioned methods, the jacking-in state of the main structure of the frame-type bridge is properly controlled, with either the uphill or downhill phenomenon, and directional de- viation avoided,and the construction task of the frame-type bridge perfectly completed. All the errors are found to be lower than the requirements of the relevant technical specifications. |
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| Keywords: | frame-type bridge jack-in construction state control uphill downhill elevation monitoring directional deviation |
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