GNSS-Based Verticality Monitoring of Super-Tall Buildings
GNSS-Based Verticality Monitoring of Super-Tall Buildings
复制标题
基于 GNSS 的超高层建筑垂直度监测
DOI：
10.3390/app8060991
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发表时间：
2018-06
影响因子：
2.7
通讯作者：
Qiu Guangxin
中科院分区：
文献类型：
--
作者：
Zhang Xingfu;Zhang Yongyi;Li Bofeng;Qiu Guangxin
在超高层建筑施工中，垂直度的控制十分重要。一般采用激光垂准仪从地面逐层传递基准点坐标，可有效控制超高层建筑的垂直度。然而，随着建筑物高度的增加和建筑物在施工中的运动，传输误差会积累。本文提出了一种基于全球导航卫星系统（GNSS）的方法来检查激光铅垂的结果。该方法包括4个步骤：（1）利用GNSS监测网各历元观测值平差计算监测点的坐标时间序列;（2）分析超高层建筑物的水平运动及其对垂直基准传输的影响;（3）利用地球重力场模型和大地水准面模型计算监测点的垂线偏差。利用垂线的偏转，将静态GNSS测量的坐标与激光垂准所使用的相同基准对齐;以及（4）最后，通过将激光垂准的结果与由垂线的偏转校正的静态GNSS结果进行比较来验证/检查激光垂准的结果。以广州某438 m高层建筑为例进行了试验研究。结果表明，GNSS网的第一步平差可以有效地消除基线向量粗差。二维位移测量精度可达毫米级，经垂线偏差校正后，静态GNSS测量与激光垂测的坐标误差小于± 2. 0 cm，满足《高层建筑混凝土结构技术规程》± 3. 0 cm的设计要求。
In the construction of super-tall buildings, it is rather important to control the verticality. In general, a laser plummet is used to transmit coordinates of reference points from the ground layer-by-layer, which can effectively control the verticality of super-tall buildings. However, the errors in transmission will accumulate with increasing height and motion of the buildings in construction. This paper presents a global navigation satellite system (GNSS)-based method to check the results of laser plumbing. The method consists of four steps: (1) Computing the coordinate time series of monitoring points by adjusting the GNSS monitoring network observations at each epoch; (2) Analyzing the horizontal motion of super-tall buildings and its effect on vertical reference transmission; (3) Calculating the deflections of the vertical at the monitoring point using an Earth gravity field model and a geoid model. With deflections of the vertical, the static GNSS-measured coordinates are aligned to the same datum as used by the laser plummet; and (4) Finally, validating/checking the result of laser plumbing by comparing it with static GNSS results corrected by deflections of the vertical. A case study of a 438-m high building is tested in Guangzhou, China. The result demonstrates that the gross errors of baseline vectors can be eliminated effectively by GNSS network adjustment of the first step. The two-dimensional displacements can be measured at millimeter-level accuracy; the difference between the coordinates of the static GNSS measurement and laser plumbing is less than ±2.0 cm after correction with the deflections of the vertical, which meets the design requirement of ±3.0 cm according to the Technical Specification for Concrete Structures of Tall Buildings in China.
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影响因子：
--
作者：
T. Kumberg;S. Schneid;L. Reindl
通讯作者：
T. Kumberg;S. Schneid;L. Reindl
DOI：
10.1016/s0167-6105(02)00287-8
发表时间：
2002-12-01
影响因子：
4.8
作者：
Tamura, Y;Matsui, M;Yoshida, A
通讯作者：
Yoshida, A
DOI：
10.1061/(asce)0733-9453(2006)132:3(97
发表时间：
2006-08-01
期刊：
JOURNAL OF SURVEYING ENGINEERING-ASCE
影响因子：
--
作者：
Tse, C. M.;Iz, H. Baki
通讯作者：
Iz, H. Baki
影响因子：
5.6
作者：
Quesada-Olmo, N.;Jimenez-Martinez, M. J.;Farjas-Abadia, M.
通讯作者：
Farjas-Abadia, M.
影响因子：
5.5
作者：
Moschas, Fanis;Stiros, Stathis
通讯作者：
Stiros, Stathis