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Số người truy cập: 107,079,397

 Numerical investigation on shear behavior of RC beams with local bond deterioration
Tác giả hoặc Nhóm tác giả: Cong Luyen Nguyen, Hikaru Nakamura, Yoshihito Yamamoto, Taito Miura
Nơi đăng: 18th International Summer Symposium, JSCE, At Sendai, Japan; Số: 18;Từ->đến trang: 89-90;Năm: 2016
Lĩnh vực: Kỹ thuật; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT

ABSTRACT
It is known that when rebars in concrete structures are corroded, the structural performance can probably be changed due to losses of cross-sectional area of reinforcement as well as losses of bond strength. A number of researches have widely investigated on shear behavior of RC members with bond deterioration. However, it has yet to be made clear due to the various situations of corrosion such as corrosion location, corrosion level, crack pattern, etc. In order to deeply understand the effect of many factors, analytical investigation would definitely be useful based on powerful numerical tools. In this study, shear behavior with bond deterioration including shear strength, crack pattern and shear mechanism based on beam and arch actions in beams is investigated by using 3-D Rigid-Body-Spring-Model (3-D RBSM).It is found that bond strength between rebar and concrete plays a key role in shear behavior of RC beams. Using local stress distribution obtained from 3-D RBSM and decoupling shear resistant mechanism into beam and arch actions, it is clear that deterioration in bond strength may result in the transition in shear resistant mechanism – dramatically build-up arch action
[ 2017\2017m07d029_18_33_33CS2-045_Luyen_N.C.pdf ]
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