RCラーメン高架橋中間スラブのかぶり測定方法の検討

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2021/03/01

タイトル(英語): Cover Measurement Method for Middle Slabs of RC Rigid Frame Viaducts

著者名: 土橋　亮太（公益財団法人鉄道総合技術研究所 鋼・複合構造），金島　篤希（公益財団法人鉄道総合技術研究所 鋼・複合構造），小林　史（公益財団法人鉄道総合技術研究所 コンクリート構造），堂内　悠吾（公益財団法人鉄道総合技術研究所 コンクリート構造），仁平　達也（公益財団法人鉄道総合技術研究所 鋼・複合構造）

著者名(英語): Ryota Dobashi (Steel & Hybrid Structures, Railway Technical Research Institute), Atsuki Kaneshima (Steel & Hybrid Structures, Railway Technical Research Institute), Takashi Kobayashi (Concrete Structures, Railway Technical Research Institute), Yugo Douchi

キーワード: 非破壊検査，鉄筋のかぶり，電磁誘導法，施工誤差，モンテカルロシミュレーション　　nondestructive inspection，covering concrete，electromagnetic induction method，measurement error，Monte Carlo method

要約(英語): Concrete cover depth largely depends on construction accuracy and is particularly affected by spacer installation accuracy. In areas where the cover depth is small, concrete spalling can occur locally due to corrosion of the reinforcing steel. Therefore, such areas should be identified in advance. In this study, the authors investigate a measuring method that can detect insufficient local coverage of concrete for middle slabs of RC rigid frame viaducts. Before examining the measurement method, the authors created a simulation, considering the variation of the concrete cover of the existing structure, to obtain the distribution of the variation of the concrete cover. Using this distribution, the authors compare the measurement accuracies of multiple cover measurement methods. The results show that it is generally possible to identify local lack of concrete cover, by conducting measurement with a rebar probe continuously in the line direction, where the distance between adjacent measuring lines is 1m or less.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.141 No.3 （2021） 特集：J-RAIL 2019

本誌掲載ページ: 223-228 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/141/3/141_223/_article/-char/ja/