Open caisson geometric attitude testing method based on GPS-EJA

A test method and caisson technology, which is applied to measuring devices, measuring instruments, surveying and navigation, etc., can solve problems such as data collection interruption, interference, and large-scale abnormal jumps, achieve accurate monitoring, improve construction efficiency, and overcome data seriousness. distortion effect

Active Publication Date: 2021-06-04
CHINA RAILWAY BRIDGE SCI RES INST LTD +1
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Problems solved by technology

Using GPS to monitor the caisson construction, to determine the geometric attitude of the caisson needs to determine at least the coordinates of three points on the top of the caisson; however, GPS monitoring is affected by the interference of site construction conditions, and it is very prone to data collection interruptions or large abnormal jumps

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  • Open caisson geometric attitude testing method based on GPS-EJA
  • Open caisson geometric attitude testing method based on GPS-EJA
  • Open caisson geometric attitude testing method based on GPS-EJA

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Embodiment Construction

[0071] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0072] The application discloses a kind of embodiment of the caisson geometric attitude test method based on GPS-EJA, comprising steps:

[0073] S1: Mark four or more monitoring points on the top of the caisson, use measuring instruments to determine the distance between any two monitoring points, arrange a GPS measuring station and an EJA transmitter at each monitoring point, and all GPS measuring stations Network with base stations with known coordinate points, and all EJA transmitters are con...

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Abstract

The invention relates to the technical field of bridge construction testing, and discloses an open caisson geometric attitude testing method based on GPS-EJA, which comprises the following steps: S1, marking more than four monitoring points on the top surface of an open caisson, and arranging a GPS observation station and an EJA transmitter at each monitoring point; s2, calculating the transverse slope rate and the longitudinal slope rate of the top face of the open caisson and measuring the distance between any two EJA transmitters through a measuring instrument; s3, randomly selecting one group of monitoring points from more than four monitoring points; s4, calculating a transverse inclination angle and a longitudinal inclination angle of the top surface of the open caisson and a distance between any two GPS observation stations, and performing rationality judgment; s5, performing calculation on the basis of the three-dimensional coordinate values acquired by the GPS observation stations which are judged to be qualified reasonably, and outputting geometric attitude parameters of the open caisson. According to the open caisson geometric attitude testing method, distortion data in the GPS monitoring process can be screened and removed, and the open caisson attitude can be automatically monitored.

Description

technical field [0001] The application relates to the technical field of bridge construction testing, in particular to a GPS-EJA-based caisson geometric attitude testing method. Background technique [0002] At present, caissons are widely used as main towers and anchorage foundations of large bridges. During the sinking process of caissons, the geometric posture of the sinking is an important indicator of construction quality control; therefore, it is necessary to Real-time monitoring of attitude can achieve better installation effect. [0003] In the related art, there are various monitoring methods for the geometric attitude of caisson sinking, among which the most novel and effective one is to use GPS (Global Positioning System, positioning system) for monitoring. Using GPS to monitor the caisson construction, to determine the geometric attitude of the caisson needs to determine at least the coordinates of three points on the top of the caisson; however, GPS monitoring ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00G01C9/00
CPCG01C15/00G01C9/00
Inventor 黄锐刘彦峰刘少成汤忠国于祥君马远刚林聪张旭光李杰严华李森
Owner CHINA RAILWAY BRIDGE SCI RES INST LTD
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