| 虎门大桥墩,塔,锚GPS施工测量 |
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| 引用本文： | 岑敏仪,瞿国万.虎门大桥墩,塔,锚GPS施工测量[J].西南交通大学学报,1999,34(5):560-564. |
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| 作者姓名： | 岑敏仪 瞿国万 |
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| 作者单位： | [1]西南交通大学测量工程系 [2]广东省长大公路工程有限公司 |
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| 基金项目： | 广东省交通厅九五年度科技项目 |
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| 摘 要： | 介绍在工程全长１５．６ｋｍ、主桥长４．５８ｋｍ的虎门大桥建设中，利用ＧＰＳ定位技术进行桥梁的施工放样。实践证明，ＧＰＳ定位技术确定的悬挂桥索塔、锚锭、连续刚构桥主墩和西岸引桥高墩的平面和高程点误差和相对点位误差均满足桥梁施工规范要求。同时也说明了在沿海平坦地区，采用施工椭球方法进行ＧＰＳ三维坐标转换能获得良好的平面和高程转换精度。
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| 关 键 词： | 桥梁 施工测量 桥塔 GPS 桥墩 锚锭 |
GPS Construction Survey of the Piles, Towers and Anchorages of Humen Bridge |
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| Cen Minyi.GPS Construction Survey of the Piles, Towers and Anchorages of Humen Bridge[J].Journal of Southwest Jiaotong University,1999,34(5):560-564. |
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| Authors: | Cen Minyi |
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| Abstract: | Humen bridge has a total length of 15.6 km and a main bridge length 4.58 km. In this paper, the construction survey of Humen bridge conducted by GPS positioning technique is introduced. Practice proves that the layout precisions of the cable support towers and anchorages of the suspension bridge, the main piers of the continuous rigid frame bridge, and the piers of the west approach bridge are fulfilled to the bridge construction specifications. It also shows that GPS datum transformation by using "construction ellipsoid" in coastal plains can obtain satisfactory applicable results for bridge construction survey. |
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| Keywords: | GPS bridge construction survey |
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