A practical bond-based peridynamic modeling of reinforced concrete structures. (1st October 2021)

• Record Type: Journal Article
• Authors: Zhang, Ning; Gu, Quan; Huang, Surong; Xue, Xin; Li, Shaofan
• Is Part Of: Engineering structures. Volume 244(2021)
• Publication Date: 2021-10-01
• Subjects: Reinforced concrete -- Bond-based peridynamics -- ASI bond-slip model -- OpenSees; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2021.112748
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: A bond-based peridynamics modeling is presented for simulating RC structures. A coupled axial-shear interaction bond-slip model is developed. The BPD framework is implemented in OpenSees. The BPD modeling can well capture the cracking and slipping of RC structures. Abstract: Peridynamics has been increasingly used for the study of damage and failure behaviors of reinforced concrete (RC) structures, e.g., cracking, fragmentation, and interface debonding due to its strong capacity in analyzing discontinuous problems. This paper presents a practical bond-based peridynamics (BPD) modeling for simulating complicated nonlinear behaviors of RC structures. A novel coupled axial-shear interaction (ASI) bond-slip model is developed to simulate the relative slip and interface damages between the concrete and steel, while the complicated behaviors of concrete and steel are simulated using one-dimensional nonlinear material constitutive models. The BPD framework and the ASI algorithm are implemented in an open source finite element software OpenSees, allowing the advantage of its abundant nonlinear material libraries. The BPD modeling is verified by three application examples, i.e., a uniaxial tension and compression test of concrete specimens, a plain round steel bar pull-out test and a pushover analysis of an RC column, and cracking behaviors are analyzed. The results demonstrate the strong capacity of the enhanced BPD modeling in simulating the damage behavior for RC structures, e.g., the strength deterioration, stiffness degradation and pinch effect in the stress–strain response, as well as the crack developments and the bond-slips behaviors.