Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Foundation pit top horizontal displacement monitoring method based on opposite side distance measurement

A technology of horizontal displacement and foundation pit, which is applied in the testing of basic structures, basic structure engineering, construction, etc., and can solve problems such as affecting the coordinate observation values ​​of monitoring points.

Inactive Publication Date: 2018-11-30
SHANDONG UNIV
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this relative horizontal displacement is not only directly related to the accuracy of the working reference point, but also related to the accuracy of placing the instrument on the working reference point each time and the accuracy of the backsight measurement. If the working reference point is unstable (there are change) or each time the instrument placement and backsight measurement accuracy are different, it will affect the coordinate observation value of the monitoring point, resulting in the accuracy of the horizontal displacement monitoring value of the foundation pit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Foundation pit top horizontal displacement monitoring method based on opposite side distance measurement
  • Foundation pit top horizontal displacement monitoring method based on opposite side distance measurement
  • Foundation pit top horizontal displacement monitoring method based on opposite side distance measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] like figure 1 As shown in the figure, a method for monitoring the horizontal displacement of the top of a foundation pit based on side-to-side ranging includes the following steps:

[0060] S1, C1, C2 are any two known reference points, P is a free station, install a total station at point P, and observe the slope distance S from point P to the reference points C1, C2 with the necessary accuracy c1 , S C2 and the included angle¶ 1 , and the zenith distance V from point P to reference points C1 and C2 C1 , V C2 , through the adjustment calculation, the coordinates of the P point (x p ,y p ):

[0061]

[0062]

[0063] in:

[0064]

[0065] S2, freely set up site P and install a total station. After observing the two reference points, then observe the foundation pit monitoring point W1, or observe the total station to the reference points C1, C2 and monitoring point W1 with equal accuracy. Tilt distance, zenith distance, and horizontal plate readings, S...

Embodiment 2

[0098] like image 3 As shown, it is the distribution map of horizontal displacement monitoring points at the top of a foundation pit in Jinan. The shape of the foundation pit is as follows image 3 As shown, the monitoring method is the same as that in Example 1, except that the monitoring point W1 in Example 1 is replaced by W01, W02, W03...W08 in the foundation pit, and the monitoring data of 8 points are obtained, as shown in the table 1 shows the monitoring daily report of a certain day, the same foundation pit is monitored by the conventional polar coordinate method to obtain the data in Table 2;

[0099] Table 1: Daily monitoring report of horizontal displacement of foundation pit slope top (distance convergence method)

[0100]

[0101]Table 2: Daily monitoring report of horizontal displacement of foundation pit slope top (polar coordinate method)

[0102]

[0103]

[0104] The distance convergence method proposed by the present invention is used to monitor ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a foundation pit top horizontal displacement monitoring method based on opposite side distance measurement and belongs to the technical field of foundation pit displacement monitoring. The foundation pit top horizontal displacement monitoring method comprises the following steps that S1, a total station is arranged freely at any point P around a foundation pit, and the coordinates P of the free station arranging point P are calculated by observing any two given datum points C1 and C2; S2, after the step S1, a foundation pit monitoring point Wi is observed immediately,the slant distance from the total station to the datum points C1 and C2, the zenith distance and the horizontal circle degree are obtained, and the horizontal distance and azimuth angle from the datumpoint C2 to the monitoring point Wi are calculated; S3, the convergence value of the horizontal distance of the foundation pit monitoring point is calculated; and S4, the component of the horizontaldistance of the foundation pit monitoring point in the slope direction, the horizontal displacement and horizontal displacement cumulative variable quantity are calculated. The foundation pit top horizontal displacement monitoring method can adapt to the complex environment of a construction site very well, application is wider, and measurement precision of the monitoring point can be improved.

Description

technical field [0001] The invention relates to a method for monitoring the horizontal displacement of the top of a foundation pit based on side-to-side ranging, and belongs to the technical field of foundation pit displacement monitoring. Background technique [0002] During the excavation of a deep foundation pit, the soil inside and outside the foundation pit will change from the original static earth pressure state to the passive and active earth pressure state, and any value of the internal force and displacement deformation of the foundation pit support structure exceeds the allowable value. range, it will cause instability and damage to the foundation pit or have adverse effects on the surrounding environment. Therefore, during the construction of the foundation pit, only the comprehensive and systematic monitoring and detection of the foundation pit support structure, the soil around the foundation pit and adjacent structures should be carried out. Emergency measure...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 王登杰王岩
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com