コンクリート工学年次大会2017(仙台)

講演情報

第39回コンクリート工学講演会

A.材料・施工 » 塩害/複合劣化/腐食・防食

腐食・防食Ⅱ

2017年7月13日(木) 09:30 〜 11:45 第1会場 (橘/会議棟2階)

座長:河合慶有(土木), 一瀬賢一(建築)

[1153] ANALYSIS OF CORROSION-INDUCED CRACK PROPAGATION OF RC MEMBERS MODELING BY CORROSION EXPANSION PRESSURE AROUND BEAM ELEMENT

Cong Luyen NGUYEN1, 中村光2, 三浦泰人2, 山本佳士2 (1.Nagoya University 2.名古屋大学)

キーワード:3D-RBSM, beam element, corrosion product penetration, corrosion-induced crack, local corrosion

This study proposed a method to simulate crack propagation due to rebar corrosion based on Rigid-Body-Spring Method (RBSM) in which rebar is modeled by beam element in order to reduce computational cost for the analysis of structural level. The effects of local corrosion around the rebar as well as penetration of corrosion products into cracks were taken into consideration in the model. The applicability of the method was verified by comparing with experiment using single-rebar specimens with different rebar diameters, cover thicknesses and specimen sizes. Analytical results showed a good correlation with experimental ones not only in terms of crack propagation tendency but also crack width values.