Stress-free strain related analysis method in concrete stress strain monitoring

Abstract

The invention discloses a stress-free strain related analysis method in concrete stress strain monitoring. The method is characterized by comprising the following steps of: 1) acquiring concrete sample data, and measuring temperature variation of concrete relative to reference time and corresponding stress-free strain by adopting a stress-free meter; and 2) performing programming by using a computer according to the sample data, and separating out temperature strain, self-grown volume deformation and dry-shrinkage wet-swelling deformation from the actually measured stress-free strain. The method has good comprehensive effect, is easily realized on the computer, has accurate results, and is simple, feasible and universally practical; and the concrete temperature strain and the self-grown volume deformation can be quickly and accurately separated from the actually measured results of the stress-free meter, a more effective method is provided for learning and mastering the actual physical properties of the concrete, and the effect of the stress-free meter is exerted more quickly and more accurately in the concrete stress monitoring.

Description

technical field [0001] The invention relates to the field of dam and engineering safety monitoring, in particular to a correlation analysis method for non-stress-strain in concrete stress-strain monitoring. Background technique [0002] In dam and engineering safety monitoring, the stress of the concrete dam body is a necessary monitoring item, and the stress-free strain of concrete is a physical quantity that must be measured in this monitoring item. Can the temperature be successfully separated from the measured stress-free strain? Strain and autogenous volumetric deformation are not only related to whether the actual concrete stress can be obtained accurately, but also help to understand the expansion and contraction properties and degree of concrete, and correctly understand the reasons for the occurrence and development of concrete stress (especially during construction). Take appropriate measures to improve the stress state of concrete during the construction period, a...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to establish a method for accurately separating the temperature strain of concrete and the autogenous volume deformation from the actual measurement results of the non-stress meter, which is good in comprehensive effect, easy to realize on the computer, accurate in results, simple and easy to implement, and universally applicable. method

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