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Structure evaluation apparatus, structure evaluation system, and structure evaluation method

Foreign code F180009594
File No. 5277
Posted date Nov 16, 2018
Country United States of America
Application number 201715454316
Gazette No. 20170269204
Date of filing Mar 9, 2017
Gazette Date Sep 21, 2017
Priority data
  • P2016-052944 (Mar 16, 2016) JP
Title Structure evaluation apparatus, structure evaluation system, and structure evaluation method
Abstract A structure evaluation apparatus has an acquisitor and an evaluator.The acquisitor acquires a distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material other than concrete.The evaluator calculates similarity, with reference to a reference region including the material in the distribution, of other regions including the material than the reference region in the distribution.
Outline of related art and contending technology BACKGROUND
Field of Art
Embodiments of the present invention relate to a structure evaluation apparatus, a structure evaluation system, and a structure evaluation method.
Related Art
Japanese Patent Application Publication No. 2005-331404 discloses the non-destructive testing of reinforced concrete structures (hereinafter, “reinforced concrete”), wherein the electromagnetic radar method has been used.In electromagnetic radar method, an electromagnetic radar apparatus radiates reinforced concrete with an electromagnetic pulse and detects the electromagnetic waves reflected from rebars and gaps inside the reinforced concrete.From the characteristics of the reflected waves, it is possible to detect the position of rebars and anomalies such as gaps inside the reinforced concrete.However, in diagnosing the conventional electromagnetic radar measurement results of reinforced concrete, there has been great reliance on experience and intuition.For that reason, there have been cases in which it is not possible to make a stable quantitative evaluation of sturdiness.This type of problem is not limited to steel-reinforced concrete, but is common to all reinforced concrete.
Scope of claims [claim1]
1. A structure evaluation apparatus comprising:
an acquisitor that acquires a distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material other than concrete; and
an evaluator that calculates similarity, with reference to a reference region including the material in the distribution, of other regions including the material than the reference region in the distribution.
[claim2]
2. The structure evaluation apparatus according to claim 1, further comprising:
an output that outputs at least one of a similarity-related information from the evaluator and a similarity distribution obtained in response to the calculations of similarity with respect to the other regions of which similarity have been calculated by the evaluator, based on the distribution.
[claim3]
3. The structure evaluation apparatus according to claim 2, further comprising:
a display controller that displays information regarding a selected location selected within the similarity distribution.
[claim4]
4. The structure evaluation apparatus according to claim 1,
wherein the evaluator determines whether or not the reference region includes the material and is free of any cross of structures of the material;
wherein the evaluator calculates similarity of first regions that are selected in the other regions with reference to the reference region, each of the first regions includes the material and is free of any cross of structures of the material, if the evaluator determines that the reference region includes the material and is free of any cross of structures of the material, and
wherein the evaluator calculates similarity of second regions that are selected in the other regions with reference to the reference region, each of the second regions includes the material and includes at least a cross of structures of the material, if the evaluator determines that the reference region includes the material and includes at least a cross of structures of the material.
[claim5]
5. The structure evaluation apparatus according to claim 1, wherein the material is different in permittivity from concrete.
[claim6]
6. The structure evaluation apparatus according to claim 5, wherein the material is a rebar.
[claim7]
7. A structure evaluation system comprising:
an electromagnetic radar apparatus that generates a distribution by scanning, with electromagnetic radar, reinforced concrete that comprises concrete and a material other than concrete; and
a structure evaluation apparatus that comprises an acquisitor that acquires a distribution from the electromagnetic radar apparatus, and an evaluator that calculates similarity, with reference to a reference region including the material in the distribution, of other regions including the material than the reference region in the distribution.
[claim8]
8. A structure evaluation method comprising:
acquiring a distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material other than concrete; and
calculating similarity, with reference to a reference region including the material in the distribution, of other regions including the material than the reference region in the distribution.
  • Inventor, and Inventor/Applicant
  • TAKAMINE Hidefumi
  • WATABE Kazuo
  • SHIOTANI Tomoki
  • KYOTO UNIVERSITY
  • TOSHIBA CORPORATION
IPC(International Patent Classification)
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