Monitoring device and method for contraction distortion of concrete structure

Abstract

The embodiment of the invention discloses a monitoring device for contraction distortion of concrete structure. The device comprises a metal bucket, a soft layer and a strain gauge. The embodiment of the invention also discloses a monitoring method for contraction distortion of concrete structure. With the above device and method adopted, the condition of contraction distortion of large concrete structure in the whole service life can be precisely monitored in real time, thus performing reliable safety assessment to project structures.

Description

technical field [0001] The invention relates to the technical field of engineering structure test measurement, in particular to a monitoring device and method for shrinkage deformation of concrete structures. Background technique [0002] In the field of industrial and civil buildings, for some important large concrete structures or large prestressed concrete structures (such as nuclear power plant containment, road bridges, large industrial plants, etc.), it is generally necessary The stress status of the structure is tracked and monitored to ensure the normal operation and use of the concrete structure. [0003] As time goes by, various concrete structures in the actual application environment will not only deform due to external stress, but also shrink and deform due to the shrinkage of the concrete structure, that is, when the concrete structure hardens in the air, it will gradually The volume of the concrete structure shrinks due to the heat dissipation and hardening p...

AI Technical Summary

Problems solved by technology

However, there are many factors that cause shrinkage and deformation of concrete structures. In addition to the raw materials, mix ratio, and age of the concrete structure itself, the ambient temperature and humidity of the concrete structure are important factors that determine the degree of shrinkage of the concrete structure. Conditions, the shrinkage deformation produced inside different concrete structures is not consistent, so the shrinkage stress inside the concrete structure in the actual application environment is generally difficult to be consistent with the empirical data in the code; in addition, in addition to shrinkage deformation, large concrete structures Generally, force deformation will occur due to external stress. Therefore, when using prism standard specimens for testing, in addition to shrinkage deformation, the test results will also include the force of the concrete structure caused by external stress. Deformation, which makes it difficult to distinguish the above-mentioned shrinkage deformation and force deformation, so that it is impossible to accurately monitor the shrinkage deformation inside the concrete

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