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A method and device for measuring the pretension of a membrane structure

A measurement method and pre-tension technology, applied in tension measurement and other directions, can solve the problems of low measurement accuracy and complicated operation process, and achieve the effect of accurate measurement results and simple measurement process.

Inactive Publication Date: 2016-09-07
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the application provides a method and device for measuring the pretension of a membrane structure to solve the technical problems of low measurement accuracy and complicated operation process of the existing pretension measurement method

Method used

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  • A method and device for measuring the pretension of a membrane structure
  • A method and device for measuring the pretension of a membrane structure
  • A method and device for measuring the pretension of a membrane structure

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0047] see figure 2 , which shows a flow chart of Embodiment 1 of a method for measuring pretension of a membrane structure provided by the present application. This embodiment includes:

[0048] Step 101: Fix the membrane surface with two points on the membrane surface as target points.

[0049] Wherein, when the pretension in a certain direction on the membrane surface needs to be measured, two points in the direction are arbitrarily selected as target points, and the membrane s...

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Abstract

The application discloses a method and device for measuring the pretension of a membrane structure. By fixing two points on the membrane surface, the length of the membrane strip between the two fixed points of the fixed membrane surface is measured, and the At the midpoint of the line segment determined by the two fixed points, a force is applied to the membrane surface, and then the displacement of the membrane surface in the direction perpendicular to the membrane surface is measured, and then the length of the membrane strip, the force, The displacement, the modulus of elasticity of the membrane surface and the cross-sectional area of ​​the membrane surface are substituted into the objective formula, so as to obtain the pretension of the membrane surface. Compared with the prior art of measuring the incident velocity, reflection velocity and maximum displacement of randomly launched particles, this application measures the length of the film strip, the applied force and the vertical displacement, and is not affected by dynamic random factors. The measurement results are more accurate and the measurement process is simpler.

Description

technical field [0001] The application relates to the technical field of engineering monitoring, in particular to a method and device for measuring the pretension of a membrane structure. Background technique [0002] The pretension of the membrane structure, also known as prestress, is applied to the membrane material from the outside. Pretension will have an important impact on the design and construction of membrane structures. Specifically, the greater the pretension applied to the membrane material, the greater the rigidity of the membrane structure, and the stronger the ability of the membrane material to withstand external loads. However, the requirements for the anchoring conditions of construction tension equipment and boundary members are also correspondingly increased. Conversely, the smaller the pretension applied to the membrane material, the smaller the stiffness of the membrane structure, and the greater the deformation of the membrane material under the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/06
Inventor 刘长江杨佳皓阳小燕袁双张硕刘舟洋杨润坛
Owner CHENGDU UNIVERSITY OF TECHNOLOGY