ridm@nrct.go.th   ระบบคลังข้อมูลงานวิจัยไทย   รายการโปรดที่คุณเลือกไว้

Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains
นักวิจัย : Yu, Jun , Tan, Kang Hai
คำค้น : DRNTU::Engineering::Civil engineering::Structures and design.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Yu, J., & Tan, K. H. (2012). Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains. The Fourth International Conference of Design and Analysis of Protective Structures, JeJu, Korea, Paper #T9-5 in Proceedings Disc. , http://hdl.handle.net/10220/9815 , http://daps2012.org/
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Experimental results indicate that for reinforced concrete (RC) members under large deformations, such as catenary action, wide cracking and severe concrete crushing are concentrated at the beam-column connections. Bar slip at wide cracks adjacent to joint interfaces results in large fix-end rotations and discontinuity that are not included in flexural analysis. Moreover, a large slip mainly results from elongation of a bar embedded into the beam-column joints, in particular, when the bar is in post-yield stage with a large inelastic strain. For cases of continuous bars or lap-spliced bars with adequate embedment lengths in joints, bar strains at the crack interfaces can even develop up to bar fracture. Therefore, bar stress-slip relationship at the crack interfaces is very critical to accurately predict structural behavior under large deformations and rotation capacity of RC members. In this paper, a macro-bar-stress-slip model is proposed based on the assumptions that (1) the distribution of bond stress within an elastic part or an inelastic part of a reinforcing bar remains uniform; (2) the slip of a reinforcing bar at the crack interfaces is computed directly from the bar extension over the embedment length within the joints and the slip at the free end; and (3) the constitutive model of reinforcement is bilinear. In addition, the proposed model considers the effects of short embedment length and high post-yield strain on bar stress-slip relationships. The proposed model will be validated by limited pullout test results and be verified by a micro-model with consideration of local bond-slip behavior.

บรรณานุกรม :
Yu, Jun , Tan, Kang Hai . (2555). Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Yu, Jun , Tan, Kang Hai . 2555. "Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Yu, Jun , Tan, Kang Hai . "Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Yu, Jun , Tan, Kang Hai . Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.