Seismic behavior of reinforced concrete beam-column joints with unstressed steel strands fully or partially used for beam longitudinal reinforcement

Article Engineering, Civil

Experimental and numerical investigation of the cyclic response of stainless steel reinforced concrete columns

J. Melo et al.

Summary: This paper discusses the major cause of premature deterioration in reinforced concrete infrastructures and the use of stainless steel reinforcement as a maintenance-free material. The study includes large-scale testing and numerical modeling to analyze the force-displacement response and energy dissipation of stainless steel reinforced concrete columns.

ENGINEERING STRUCTURES (2022)

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Article Construction & Building Technology

Cyclic Behavior of Reinforced Concrete Columns with Unstressed Steel Strands as Longitudinal Reinforcement

Yu-Chen Ou et al.

Summary: The use of unstressed steel strands as longitudinal reinforcement can reduce steel congestion in reinforced concrete members and has higher drift and recentering capacities compared to conventional deformed bars.

JOURNAL OF STRUCTURAL ENGINEERING (2022)

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Article Engineering, Civil

Experimental and numerical investigations on seismic performance of RC bridge piers considering buckling and low-cycle fatigue of high-strength steel bars

Yang Ding et al.

Summary: This study investigated the mechanical properties of high-strength steel bars (HSSB) and the seismic performance of high-strength RC piers. It was found that HTRB600 steel has lower ductility and inferior low-cycle fatigue performance compared to HRB400E steel. Increasing the slenderness ratio weakens the low-cycle fatigue life of steel bars. Additionally, the ultimate displacement of RC piers with C80 concrete is significantly lower than that with C40 and C60 concrete. Increasing the axial load ratio reduces the ultimate displacement of RC piers.

ENGINEERING STRUCTURES (2021)

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Article Engineering, Civil

Shear strength of reinforced concrete columns with five-spiral reinforcement

Yu-Chen Ou et al.

Summary: The study found that reinforced concrete columns with five-spiral reinforcement have slightly lower shear strength compared to traditional tied columns, but exhibit greater durability in shear performance. Failure of the five-spiral columns is mainly attributed to spiral fracture, while traditional tied columns fail due to hook anchorage failure. Furthermore, the modified DCSS model can provide a conservative estimation of the shear strength contributed by five-spiral reinforcement.

ENGINEERING STRUCTURES (2021)

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Article Engineering, Civil

Experimental seismic behavior of ultra-high performance concrete columns with high strength steel reinforcement

Mahmoud Aboukifa et al.

Summary: Ultra-High Performance Concrete (UHPC) is an advanced cementitious composite material with high ductility and durability, suitable for new construction applications, especially for next-generation bridge structures. Research shows that UHPC columns have reasonable ductility and drift capacity, and higher reinforcement ratio or grade is needed to fully utilize their superior mechanical properties.

ENGINEERING STRUCTURES (2021)

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Article Engineering, Civil

Cyclic behaviour of UHPC columns with hybrid CFRP/Steel reinforcement bars

Rui Hu et al.

Summary: A new type of reinforced concrete column using ultra-high-performance concrete with hybrid carbon fibre-reinforced polymer and steel bars was proposed in this study, with experimental and numerical analysis confirming its effectiveness in providing self-centring capacity and energy dissipation during seismic events. The replacement ratio of CFRP bars and axial-load ratio were found to be crucial factors in balancing the performance of the columns.

ENGINEERING STRUCTURES (2021)

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Review Construction & Building Technology