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Method and device for measuring volume deformation of large-volume concrete bottom plate by using laser wireless distance meter

A technology of mass concrete and laser range finder, which is used in measuring devices, optical devices, instruments, etc.

Active Publication Date: 2013-04-17
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method and device for measuring the volume deformation of a large-volume concrete floor due to early hydration heat by using a laser wireless rangefinder

Method used

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  • Method and device for measuring volume deformation of large-volume concrete bottom plate by using laser wireless distance meter
  • Method and device for measuring volume deformation of large-volume concrete bottom plate by using laser wireless distance meter

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Embodiment Construction

[0019] In order to facilitate a further understanding of the structure of the present invention, the present invention will be further described below in conjunction with specific examples.

[0020] refer to figure 1 As shown, the device 1 of the present invention for measuring the volume deformation of a large-volume concrete floor after pouring using a laser wireless rangefinder is mainly composed of a laser rangefinder 11 and a laser reflector 12, wherein the laser rangefinder 11 is accommodated in In a galvanized steel box 13, the side wall of the galvanized steel box 13 is provided with a plurality of through holes 14, and the laser range finder emits 11 lasers 110 through the through holes 14 on the front side of the galvanized steel box 13. The steel plate box 11 is fixed on the top of a tripod 15 through a hinge, and the laser reflection plate 12 is a 20*20cm galvanized steel plate, which is welded on the top of a tripod 15, and the two tripods 15 are respectively fixe...

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Abstract

The invention discloses a method for measuring volume deformation of a large-volume concrete bottom plate by using a laser wireless distance meter. The method mainly comprises the following steps of after the concrete bottom plate is cast and primarily concentrated, respectively spanning the laser distance meter connected with a computer and a laser reflecting plate at the opposite positions of the two sides of the concrete bottom plate; starting the laser distance meter, radiating laser emitted by the laser distance meter onto the laser reflecting plate to generate a distance signal between the laser distance meter and the laser reflecting plate, and transmitting the distance signal to the computer, wherein when the concrete bottom plate is expanded and retracted, the distance signal generated between the laser distance meter and the laser reflecting plate is correspondingly changed; measuring and recording the distance signal to obtain the volume change of the concrete bottom plate; and measuring the deformation of the concrete bottom plate by using the laser distance meter and the laser reflecting plate.

Description

technical field [0001] The invention relates to a method for measuring the volume deformation of a large-volume concrete floor, in particular to a method and a device for measuring the volume deformation of a large-volume concrete floor by using a laser wireless range finder. Background technique [0002] After the mass concrete bottom slab is poured, the temperature of the bottom slab will rise and the volume will expand due to the release of cement hydration heat. After the release of cement hydration heat slows down, the temperature will drop due to the heat dissipation on the bottom slab surface, causing the volume of the bottom slab to shrink. The expansion and contraction of the concrete floor will be restricted by the foundation soil and the pile foundation, and cannot occur freely. However, it is difficult to calculate the size of the constraint deformation of the foundation soil and the pile foundation to the floor, so the early hydration thermal deformation of the f...

Claims

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Application Information

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IPC IPC(8): G01B11/16
Inventor 危鼎张晓勇王桂玲周新军王克全毛登文刘柳星宋文化苗冬梅马洪娟周洪涛
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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