Seismic performance of interior beam-column joints in reinforced glazed hollow bead insulation concrete frames. (1st February 2021)

• Record Type: Journal Article
• Authors: Zhang, Yu; Li, Beibei; Li, Zhu; Ma, Gang; Liu, Yuanzhen
• Is Part Of: Engineering structures. Volume 228(2021)
• Publication Date: 2021-02-01
• Subjects: Glazed hollow bead -- Lightweight concrete -- Beam-column joints -- Seismic performance -- Ductility -- Finite element method; 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.2020.111494
• Languages: English
• ISSNs: 0141-0296

Abstract

Graphical abstract: Highlights: The seismic performance of interior beam-column joints in GIC frame was tested. The performance of joint in GIC frame is superior to normal concrete frame. A "three-stage" model for calculating the shear strength of GIC joints is proposed. Nonlinear finite-element analysis of GIC joints is performed. Abstract: Reinforced concrete frames frequently suffer severe damage under strong earthquakes, and the damage is often concentrated at beam-column joints. This paper presents the experimental and analytical findings of the seismic performance of reinforced glazed hollow bead insulation concrete (GIC) interior beam-column joints. Six 1/2-scale GIC interior beam-column joint specimens were tested under quasi-static cyclic loading to measure the failure pattern, hysteresis curves, displacement ductility, energy dissipation and stiffness degeneration. Seismic behavior of GIC joints was investigated to elucidate the influence of concrete type, axial compressive ratio and stirrup ratio on the joint panel. A "three-stage" model was proposed to calculate the shear strength of GIC joints by combining the diagonal compression strut mechanism and the truss mechanism. Nonlinear finite-element analysis of joints was performed to examine the validity of the "three-stage" calculation model by comparing the results with the experimental results.