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

Total station reflector plate type steel beam deflection measuring method

A technology of deflection measurement and total station, which is applied in the direction of measuring devices and instruments, and can solve problems such as complicated installation and dismantling, and difficult erection of operating platforms

Active Publication Date: 2021-09-07
NO 4 ENG COMPANY LTD OF CCCC FIRST HARBOR ENG COMPANY
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for measuring the deflection of a reflector-type steel beam with a total station, which solves the problems of complicated installation and dismantling of traditional deflection measuring instruments and difficulty in setting up an operating platform. The measuring method is convenient, fast and accurate.

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
  • Total station reflector plate type steel beam deflection measuring method
  • Total station reflector plate type steel beam deflection measuring method
  • Total station reflector plate type steel beam deflection measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Combine Figure 1 to 3 A method for measuring the deflection of sheet steel beam reflector total station, includes the following steps comprising:

[0051] Step 1, after the ground assembly of the steel beam, the axis or axial offset line is pop-up on the surface of the steel beam, and reflecting the reflection sheet at both ends and across the steel beam;

[0052] Step ii, set at least two elevation known points under the bottom plate below the steel beam, regularly closing the high-pass known points, ensuring that the known point elevation value is accurate and reliable;

[0053] Step iii, using the whole station, the triangular elevation observation principle, according to the construction environment, the instrument is elected in the bottom plate, directly measured one of the known point elevations, and displays the high-pass counter instrument high, adjust the instrument to reset the station. This method avoids the error of the manual steel size to take high in the inst...

Embodiment 2

[0066] Combine Figure 1 to 3 , Vertical deflection at point E monitoring points in Step V f 1 The calculation method is as follows:

[0067] Depending on the triangle, the same principle is obtained:

[0068]

[0069] Organize:

[0070] (H ' B -H ' A ) × L BE = H ' B × (L) BE + L EA ) - (f 1 + H ' E × (L BE + L EA )

[0071]

[0072] final:

[0073]

[0074] Deflection Deflection variation value is a positive value, a negative value for the arch;

[0075] The E point is an arbitrary position of the axis, and if the E point is at the center of the axis, the degradation value derived is a deflection value in the axis, such as the E point at 1 / 4, the deflection value is 1 / 4 Deflection value. Beam eject surface offset axis or axis line apparatus using the ink cartridge, the pop-axis or axis line offset ink line; the reflecting sheet is a self-adhesive reflective sheet, the reflective sheet is provided with adhesive on the back structure.

Embodiment 3

[0077] Combine Figure 1 to 3 A method for total station steel beam deflection measurement of the reflection sheet comprising triangular deflection of specifications similar geometric derivation formula, laid on a steel beam axis of the reflective sheet 12, known control points on the ground 6 after erecting prism 5, an arbitrary position on the ground 4 up a tripod 3 and the total station, by measuring a known control high elevation inverse calculation device 6, the height adjusting equipment redesign station, the total station is switched to the reflective sheet view mode , prism height is set to 0, and then directly measuring the relative coordinates and elevation of the reflection plate 2.

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 discloses a total station reflector plate type steel beam deflection measuring method which specifically comprises the following steps of: step I, popping up an axis or an axis offset line on the surface of a steel beam, and arranging a reflector plate on the steel beam; step II, setting at least two elevation known points on a bottom plate below the steel beam and carrying out level closed joint measurement; step III, arranging an instrument at an arbitrary position of the bottom plate, and measuring the elevation of one known point; step IV, switching a total station to a reflector plate observation mode, aiming at a monitoring point reflector plate and carrying out relative coordinate and elevation measurement; step V, exporting a deflection value formula; step VI, carrying out left-side observation and right-side observation on each monitoring point position, and taking an average value as a one-back observation value; step VII, taking an average value of independent observation as an observation result of this time; and step VIII, monitoring the processes of standing, lifting, in-place taking and unloading of the steel beam and roof concrete construction, and carrying out stress analysis through deflection change. The total station reflector plate type steel beam deflection measuring method is convenient, fast and good in accuracy.

Description

Technical field [0001] The present invention relates to the field of measurement engineering construction, in particular to a sheet-type reflective Station Beam Deflection measurements. Background technique [0002] Traditional measurements mostly by deflection or deflection water level meter (dial indicator, displacement meter) measured directly, the advantage of this method is multi-point detection, directly deflection value of each measuring point, stable and reliable measurement. [0003] But there are many less than direct measurement methods: [0004] 1, deflection measurement instrument belongs to special equipment, general construction companies need additional configuration. [0005] 2, the direct measurement method for an erection in the platform-specific monitoring points higher when the monitoring target height, span erection not operating platform is large or the presence of cross construction. [0006] 3, there are security risks when measured on the operating platf...

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): G01B21/32
CPCG01B21/32
Inventor 张钧祥余良勇马星宇周彬李孟杰
Owner NO 4 ENG COMPANY LTD OF CCCC FIRST HARBOR ENG COMPANY
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