Independent monitoring method for construction verticality of super-high building
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for buildings and super high-rise buildings. It is used in measuring devices, measuring fixed angles, instruments, etc. It can solve problems such as not considering matching problems, and achieve the effects of good harmony, high precision, and no accumulation of errors.
Inactive Publication Date: 2016-10-12
GUANGDONG UNIV OF TECH
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[0003] Using GNSS technology to independently monitor the verticality of super high-rise buildings needs to solve the matching problem between GNSS measurement and laser plumb meter projection point. The main reason is that the GNSS measurement reference line is the normal line, while the laser plumb meter measurement reference line is lead vertical line, and the matching problem between the two is not considered when using GNSS to monitor the verticality of super high-rise buildings
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Embodiment 1
[0037] like Figure 4 , a kind of independent monitoring method of verticality of super high-rise building construction, comprises the steps of following sequence:
[0038] Step 1. Select a laser plumb instrument projection point on the monitoring layer of the super high-rise building as the monitoring point, and select N control points as reference points in the first-level control network of the super high-rise building, where N≥3;
[0039] Step 2, set up a GNSS receiver on the monitoring point and reference point selected in step 1 for static synchronous observation, and the synchronous observation time T≥24 hours;
[0040] Step 3, using the classic static baseline calculation mode to process the field observation data, taking the construction coordinates of the reference point as constraints, and obtaining the construction coordinates of the monitoring points through adjustment;
[0041] Step 4, calculate the vertical line deviation meridian component ξ and the unitary co...
Embodiment 2
[0056] like figure 1 , 2 , Shown in 3 and 4, the present embodiment provides a kind of independent monitoring method utilizing GNSS technology to realize the verticality of super high-rise building construction, and the steps are as follows:
[0057] (a) On the super high-rise building monitoring layer, select a laser plumb meter projection point as the monitoring point, and select three control points with better air observation conditions in the super high-rise building's first-level control network as the benchmark point;
[0058] (b) Set up a GNSS receiver on the monitoring point and reference point selected in step (a) to carry out long-term static synchronous observation, requiring synchronous observation time ≥ 24 hours;
[0059] (c) Use the classic static baseline calculation mode to process the field observation data, and use the construction coordinates of the datum points as constraints to obtain the construction coordinates of the monitoring points through adjust...
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Abstract
The invention discloses an independent monitoring method for the construction verticality of a super-high building. The independent monitoring method comprises the following steps: (1) conducting networking synchronous long-term observation on datum points and a monitoring point, and acquiring the construction coordinates of the monitoring point according to a classical static baseline calculation and network adjustment; (2) calculating the meridional component Xi and the prime vertical component ita of the plumb line deviation of the monitoring point by fusing a plurality of earth's gravity field models or via a regional quasi-geoid model; (3) calculating the systematic deviation between GNSS measurement and a laser plummet apparatus projection point according to the calculated the plumb line deviation, so as to solve the matching problem of GNSS measurement and the laser plummet apparatus projection point; (4) comparing a result of GNSS measurement with a result of the laser plummet apparatus projection point to evaluate the construction verticality of the super-high building. The independent monitoring method has the characteristics of being good in coherence with the datum points, capable of realizing automatic continuous observation, high in precision and independence, and the like, and has very high application value.
Description
technical field [0001] The invention relates to the field of engineering measurement, in particular to an independent monitoring method for the construction verticality of a super high-rise building. Background technique [0002] my country's "General Rules for Civil Building Design" (GB50352-2005) stipulates that when the building height exceeds 100m, both residential and public buildings are super high-rise buildings. With the gradual shortage of urban land in China, there are more and more super high-rise buildings in developed areas such as Beijing, the Yangtze River Delta, and the Pearl River Delta. One of the key technologies for the construction measurement of super high-rise buildings is to ensure that the verticality of the building meets the requirements of the code. The "Code for Acceptance of Construction Quality of Concrete Structure Engineering" (GB50204-2015) stipulates that the permissible deviation of the verticality of the full height of the cast-in-place c...
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