| 全站仪自由设站法在建筑基坑监测中的应用条件研究 |
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| 引用本文： | 刘洪臣,孙愿平,陈磊.全站仪自由设站法在建筑基坑监测中的应用条件研究[J].岩土工程技术,2020(1):13-17. |
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| 作者姓名： | 刘洪臣 孙愿平 陈磊 |
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| 作者单位： | 中兵勘察设计研究院有限公司 |
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| 摘 要： | 自由设站法有两个特点:一是能够克服复杂施工环境对通视条件的限制,二是容易获得较高的观测精度,因此在城市深基坑水平位移变形监测中得到广泛应用。根据测量平差原理,推导了影响自由设站法测量精度的因素及各因素对测量精度的影响规律,总结了在基坑水平位移监测工作中满足不同精度要求的应用条件,对指导基坑变形监测或类似工程具有实际意义。
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| 关 键 词： | 测量平差 自由设站法 边角交会 测量精度 深基坑 变形监测 水平位移 |
Application Conditions of Total Station Free Station Method in Building Foundation Pit Monitoring |
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| Liu Hongchen,Sun Yuanping,Chen Lei.Application Conditions of Total Station Free Station Method in Building Foundation Pit Monitoring[J].Geotechnical Engineering Technique,2020(1):13-17. |
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| Authors: | Liu Hongchen Sun Yuanping Chen Lei |
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| Institution: | (China Ordnance Industry Survey and Geotechnical Institute Co.,Ltd.,Beijing 100053,China) |
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| Abstract: | There are two characteristics of free station method.Firstly it can overcome the restriction of visual condition in complex construction situation;secondly it is easy to obtain high observation accuracy.It is widely used in the deformation monitoring of horizontal displacement of deep foundation pits in cities.According to the principle of survey adjustment,the affecting factors of the measurement accuracy of free station method are deduced,and the influencing law of various factors on measurement accuracy is proposed.The application conditions of satisfying different accuracy requirements in the horizontal displacement monitoring of foundation pits are also summarized.The conclusions are of practical significance for the deformation monitoring of foundation pits and other similar projects. |
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| Keywords: | survey adjustment free station method linear-angular intersection measurement accuracy deep foundation pits deformation monitoring horizontal displacement |
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