Experimental Study on Seismic Behavior of Newly Assembled Concrete Beam-Column Joints with L-shaped Steel Bars DOI Open Access

Mengjiao Lv,

Taochun Yang,

Yin Chang-lei

et al.

Published: Nov. 17, 2023

A novel concrete beam-column connection utilizing L-shaped steel bars is proposed to address the growing demand for prefabricated buildings and ensure good seismic performance in such structures. After positioning two beams with tendons into designated points at top bottom of columns, poured post-cast section joint composite beam area, realizing a between columns. Quasi-static tests were performed on four combined nodes one cast-in-place node investigate their failure modes stress mechanisms. Seismic indices, including hysteretic curves, skeleton ductility performance, energy dissipation capacity, analyzed. Concurrently, finite element method (FEM) was employed parameter analysis. By integrating test FEM results, an equation calculating shear capacity derived. The findings demonstrate that hysteresis curve newly developed joints relatively full, overall index comparable joints. Additionally, enhancing post-casting area concrete, length bars, strength region, axial compression ratio, or tube dimensions can effectively improve performance. derived shear-bearing satisfies design application requirements.

Language: Английский

Seismic performance of prefabricated middle frame composed of special-shaped columns with built-in lattice concrete-filled circular steel pipes DOI
Haibin Chen, Liwei Wu,

Hu Sen Jiang

et al.

Structures, Journal Year: 2021, Volume and Issue: 34, P. 1443 - 1457

Published: Sept. 1, 2021

Language: Английский

Citations

15
Experimental Study on Seismic Behavior of Newly Assembled Concrete Beam–Column Joints with L-Shaped Steel Bars DOI Creative Commons
Mengjiao Lv, Taochun Yang,

Mingqiang Lin

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(3), P. 1262 - 1262

Published: Feb. 2, 2024

A novel concrete beam–column connection utilizing L-shaped steel bars is proposed to address the growing demand for prefabricated buildings and ensure good seismic performance in such structures. After positioning two beams with tendons into designated points at top bottom of columns, poured post-cast section joint composite beam area, realizing a between columns. Quasi-static tests were performed on four combined backbone curves one cast-in-place investigate their failure modes stress mechanisms. Through low-cycle repeated loading tests, it found that measures as increasing area length L-shape, strength can effectively improve bonding ability specimens precast members, ductility performance, energy dissipation capacity, bearing capacity specimens. The initial stiffness be improved by presetting pipe column. Concurrently, finite element method (FEM) was employed parameter analysis. By integrating test FEM results, an equation calculating shear derived. findings demonstrate hysteresis curve newly assembled joints full, its overall index roughly same joints. Additionally, enhancing post-casting concrete, bars, region, axial compression ratio, or tube dimensions performance. derived shear-bearing satisfies design application requirements.

Language: Английский

Citations

1
Study on influencing factors of hysteretic performance of cantilever fully-bolted prefabricated beam-column joint DOI
Zhenshan Wang, Jinpeng Zhu,

Hua-Qian Qin

et al.

Journal of Building Engineering, Journal Year: 2023, Volume and Issue: 82, P. 108324 - 108324

Published: Dec. 15, 2023

Language: Английский

Citations

2
Experimental Study on Seismic Behavior of Newly Assembled Concrete Beam-Column Joints with L-shaped Steel Bars DOI Open Access

Mengjiao Lv,

Taochun Yang,

Yin Chang-lei

et al.

Published: Nov. 17, 2023

A novel concrete beam-column connection utilizing L-shaped steel bars is proposed to address the growing demand for prefabricated buildings and ensure good seismic performance in such structures. After positioning two beams with tendons into designated points at top bottom of columns, poured post-cast section joint composite beam area, realizing a between columns. Quasi-static tests were performed on four combined nodes one cast-in-place node investigate their failure modes stress mechanisms. Seismic indices, including hysteretic curves, skeleton ductility performance, energy dissipation capacity, analyzed. Concurrently, finite element method (FEM) was employed parameter analysis. By integrating test FEM results, an equation calculating shear capacity derived. The findings demonstrate that hysteresis curve newly developed joints relatively full, overall index comparable joints. Additionally, enhancing post-casting area concrete, length bars, strength region, axial compression ratio, or tube dimensions can effectively improve performance. derived shear-bearing satisfies design application requirements.

Language: Английский

Citations

1