| 润扬大桥北汊桥施工控制网测量及分析 |
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| 引用本文： | 郑德华,岳建平.润扬大桥北汊桥施工控制网测量及分析[J].测绘工程,2003,12(2):41-43,52. |
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| 作者姓名： | 郑德华 岳建平 |
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| 作者单位： | 1. 同济大学测量与国土信息工程系,上海,200092
2. 同济大学测量与国土信息工程系,上海,200092;河海大学测绘工程系,江苏,南京,210098 |
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| 摘 要： | 通过对润扬大桥北汊桥施工控制网三种测量方案的设计，并对实测成果进行分析比较。根据实践成果得出大型桥梁控制网测量采用测边网或边角网方案可以达到精密施工控制网的精度要求，边角网平差计算采用验后定权法较合理。在精密测距边角网中，通过增加方向观测值方法来提高控制网的精度作用不明显。
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| 关 键 词： | 润扬大桥 施工控制网 测量方案 测边网 边角网 精度 平差 验后定权法 方向观测值方法 |
| 文章编号： | 1006-7949(2003)02-0041-03 |
Analysis and surveying of construction control network for the north bridge of Runyang bridge |
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| ZHENG De-hua ,YUE Jian-ping.Analysis and surveying of construction control network for the north bridge of Runyang bridge[J].Engineering of Surveying and Mapping,2003,12(2):41-43,52. |
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| Authors: | ZHENG De-hua YUE Jian-ping |
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| Institution: | ZHENG De-hua 1,YUE Jian-ping 1,2 |
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| Abstract: | Three design schemes of the construction control network for north bridge of Runyang bridge are proposed in the paper.By comparing and analysing the results computed with surveying data,the design of three schemes is proved to be accurate.The practice of the project indicates that the sur-veying method of trilateration network or triangulateration network for large-sized bridge can fulfil the accuracy requirements for construction control network.The post-test method of determining weight is suitable for triangulateration network adjustment.In the triangulateration network adjustment with precise distance measurement,increasing the number of direction observation can't effectively improve the accuracy of control network. |
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| Keywords: | north bridge of runyang bridge construction control network scheme of surveying com-parison and analysis |
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