Title:
断面減少率推定方法および耐荷力推定方法
Document Type and Number:
Japanese Patent JP7019401
Kind Code:
B2
Abstract:
To quantitatively obtain a cross sectional reduction rate of a steel bar on the basis of a behavior of an expansion strain with corrosion of a steel bar in an actual structure.SOLUTION: A cross sectional reduction rate estimation method for estimating a reduction rate of a cross section of a steel material, which is reduced by corrosion of a steel material, includes the steps for: fixing an optical fiber sensor to a front surface of a steel material; detecting a characteristic change of a light wave to be propagated in the optical fiber sensor so as to detect a strain of a steel material due to generation of a corrosion product; and estimating a cross sectional reduction rate of a steel material corresponding to the detected strain through the use of a predetermined function indicating a relation between a cross sectional reduction rate of a steel material and a strain by corrosion expansion of a steel material.SELECTED DRAWING: Figure 5
Inventors:
Hiroyuki Hayano
Akio Ochiai
Maya Joide
Rei Eriguchi
Akio Ochiai
Maya Joide
Rei Eriguchi
Application Number:
JP2017241189A
Publication Date:
February 15, 2022
Filing Date:
December 15, 2017
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
G01N17/00; E04G21/12; E04G23/00
Domestic Patent References:
| JP2016186482A | ||||
| JP2006522324A | ||||
| JP2011257245A | ||||
| JP2016186483A |
Foreign References:
| US20050082467 | ||||
| CN104849200A | ||||
| CN102095677A |
Other References:
岩波 光保,鉄筋腐食がRCはりの耐荷性能に及ぼす影響,コンクリート工学年次論文集,Vol.24 No.2,日本,2002年,1501頁-1506頁
内田 祐介,高強度太径鉄筋の強度性状に及ぼす腐食の影響に関する研究,コンクリート工学年次論文集,Vol.37 No.1,日本,2015年,979頁-984頁
内田 祐介,高強度太径鉄筋の強度性状に及ぼす腐食の影響に関する研究,コンクリート工学年次論文集,Vol.37 No.1,日本,2015年,979頁-984頁
Attorney, Agent or Firm:
Takeo Fukuchi
Yoichi Shirakawa
Yoichi Shirakawa
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