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A method and system for monitoring cracks in concrete

A monitoring system and concrete technology, applied in the direction of measuring devices, instruments, etc., can solve the problems of time-consuming and labor-intensive, affecting the normal use of the structure, high requirements for the surface flatness of concrete structures, etc., and achieve the effect of low surface flatness

Active Publication Date: 2021-12-07
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Abstract
  • Description
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Problems solved by technology

However, the existing crack monitoring technology has high requirements on the surface smoothness of the concrete structure, which is not only time-consuming and laborious, but also affects the normal use of the structure
Moreover, the existing technology can only measure the cracks on the surface of the concrete structure, but cannot monitor the cracks inside the concrete structure

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  • A method and system for monitoring cracks in concrete
  • A method and system for monitoring cracks in concrete
  • A method and system for monitoring cracks in concrete

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] The purpose of the present invention is to provide a method and system for monitoring concrete cracks, which has lower requirements on the surface smoothness of concrete structures, does not affect the normal use of concrete structures, and can monitor cracks inside concrete structures.

[0039] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in deta...

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Abstract

The invention discloses a concrete crack monitoring method and system. The concrete crack monitoring method and system provided by the present invention monitor whether there are cracks in the concrete structure according to the change trend of the parameters of the stress wave collected by the receiver when the load of the concrete structure increases gradually. As the load of the concrete structure increases, if the propagation time difference of the stress wave increases and its amplitude decays, it can be determined that there is a crack between the driver and the receiver of the piezoelectric smart sensor group corresponding to the stress wave. The concrete crack monitoring method and system provided by the invention have lower requirements on the surface flatness of the concrete structure, and each driver and each receiver are embedded in the concrete structure by drilling and grouting, which does not affect the normal use of the concrete structure, and can Monitoring cracks inside concrete structures.

Description

technical field [0001] The invention relates to the field of reinforced concrete structures, in particular to a concrete crack monitoring method and system. Background technique [0002] Cracks are a typical defect of concrete girder bridges. In the prior art, the direct measurement method is usually used to monitor the crack width of concrete structures. The monitoring of crack distribution can also be realized by pasting sensors on the outside of the concrete structure by using the external paste method. However, the existing crack monitoring technology has high requirements on the surface smoothness of the concrete structure, which is not only time-consuming and laborious, but also affects the normal use of the structure. Moreover, the existing technology can only measure the cracks on the surface of the concrete structure, but cannot monitor the cracks inside the concrete structure. Contents of the invention [0003] The purpose of the present invention is to provide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/32
CPCG01B21/32
Inventor 刘铁军杜成成邹笃建周傲李伟杰
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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