| 基于GNSS-RTK的在建超高层风载动态变形监测 |
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| 引用本文： | 熊春宝,何浩博,牛彦波,叶作安.基于GNSS-RTK的在建超高层风载动态变形监测[J].测绘工程,2017,26(5). |
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| 作者姓名： | 熊春宝 何浩博 牛彦波 叶作安 |
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| 作者单位： | 1. 天津大学 建筑工程学院,天津,300072;2. 天津市陆海测绘有限公司,天津,300191 |
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| 摘 要： | 首先以海星达H32全能型GNSS-RTK接收机为试验仪器,进行不同星系组合的RTK定位精度试验研究。然后以在建的天津高银117大厦为监测对象,采用GPS+GLONASS+BDS三星系组合对其进行现场强风作用下的RTK动态变形监测。利用巴特沃斯滤波对实测数据进行去噪处理,得到各测点的位移曲线。分析结果表明:GPS单星系定位的平面坐标精度相对较差,双星系组合定位的平面坐标精度与三星系组合定位的平面坐标精度基本相当,但GPS+GLONASS+BDS三星系组合定位的稳定性和可靠性最强;由于施工阶段大厦结构的刚度和整体性与竣工后存在差异,故在强风作用下其按一定施工步距滞后的低矮外框的振动位移幅度大于其高耸内筒结构的振动位移幅度;大厦外框和内筒均存在横风向振动位移,且横风向振动位移与顺风向振动位移的大小相近;监测环境对监测结果有着一定的影响,66层各点的监测值误差要大于95层各点的监测值误差。
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| 关 键 词： | GNSS-RTK 在建超高层 风载振动 变形监测 |
The dynamic deformation monitoring of super high-rise building wind load by GNSS-RTK |
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| XIONG Chunbao,HE Haobo,NIU Yanbo,YE Zuoan.The dynamic deformation monitoring of super high-rise building wind load by GNSS-RTK[J].Engineering of Surveying and Mapping,2017,26(5). |
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| Authors: | XIONG Chunbao HE Haobo NIU Yanbo YE Zuoan |
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| Abstract: | Haixingda H32 receivers of GNSS‐RTK is used to make the RTK ,positioning experiments of different combined systems .Taking Tianjin Gaoyin 117 building under construction as an object measured , this paper monitors its dynamic deformation of strong wind by RTK technology of GPS +GLONASS+BDS combination .The measured data are processed by Butterworth filter ,and the vibration curves of some points on the building are obtained .T he analysis results show that :the horizontal positioning accuracy of GPS is the lowest ,two combined systems and three combined systems are almost the same ,and the stability of GPS + GLONASS+ BDS combination is the best .The stiffness and integrity of the building under construction are different from those on its completion ,so the vibration amplitude of the low outer frame on 66th floor w hich is delayed to a certain construction step lag is bigger than that of the high inner tube structure on 95th floor .Outer frame and inner tube both have transverse -wind vibration ,whose amplitude is approximate to that of downwind vibration . The monitored results are influenced by the environment near the building ,w hich the errors of data measured on 66th floor are bigger than those on 95th floor . |
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| Keywords: | GNSS-RTK super high-rise building under construction vibration due to wind load deformation monitoring |
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