Acoustic Emission Monitoring of Multicell Reinforced Concrete Box Girders Subjected to Torsion

被引：10

作者：

Bagherifaez, Marya ^{[1
]}

Behnia, Arash ^{[1
]}

Majeed, Abeer Aqeel ^{[1
]}

Kian, Chai Hwa ^{[1
]}

机构：

[1] Univ Malaya, Fac Engn, Dept Civil Engn, Kuala Lumpur 50603, Malaysia

来源：

SCIENTIFIC WORLD JOURNAL | 2014年

关键词：

B-VALUE; FRACTURE; MASONRY; ROCK;

D O I：

10.1155/2014/567619

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Reinforced concrete (RC) box girders are a common structural member for road bridges in modern construction. The hollow cross-section of a box girder is ideal in carrying eccentric loads or torques introduced by skew supports. This study employed acoustic emission (AE) monitoring on multicell RC box girder specimens subjected to laboratory-based torsion loading. Three multicell box girder specimens with different cross-sections were tested. The aim is to acquire AE analysis data indicative for characterizing torsion fracture in the box girders. It was demonstrated through appropriate parametric analysis that the AE technique could be utilized to effectively classify fracture developed in the specimens for describing their mechanical behavior under torsion. AE events localization was presented to illustrate the trend of crack and damage propagation in different stages of fracture. It could be observed that spiral-like patterns of crack were captured through AE damage localization system and damage was quantified successfully in different stages of fracture by using smoothed b-value analysis.

引用

页数：13

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