Mechanical behavior of RC columns strengthened with thin UHPC jacket ...
WEBMay 15, 2022 · In this work, UHPC was employed as external strengthening jacket for RC columns with high axial load ratios, and the test results presented in Section 3 strongly proved the effectiveness of UHPC jacket for seismic enhancing of the columns.
Seismic performance of full-scale UHPC-jacket ... - ScienceDirect
WEBSep 15, 2021 · Ultra-high-performance concrete (UHPC) is a class of concrete materials that have high strength and ductility capacities. This study developed two UHPC jacketing methods to improve the seismic performance of shear-deficient RC columns in mid- to high-rise buildings without enlarging the cross-section of the columns.
UHPC jacket retrofitting of reinforced concrete bridge piers with …
WEBSep 11, 2020 · Many ‘as-built’ reinforced concrete (RC) bridge piers are suffering from insufficient flexural rebars in China. A novel retrofitting technique was proposed to enhance their seismic-resistant capacities, by enclosing the plastic hinge zone with the ultra-high performance concrete (UHPC) jacket.
Seismic Strengthening of Concrete Columns by Ultrahigh …
WEBAug 4, 2021 · The UHPFRC jacketing with/without textile reinforcement for concrete columns for the seismic retrofitting demonstrates its strengthening efficiency and reduction of jacket thickness through the experimental program in this study.
Axial compressive performance of RC columns strengthened with ...
WEBJan 15, 2023 · Abstract. In this paper, a new method of strengthening RC columns combined with prestressed carbon fiber reinforced polymer (CFRP) fabric and an ultra-high performance concrete (UHPC) jacket is proposed.
WEBThis paper presents a study of the structural design of piles using UHPC jackets, including the working stress design and strength design. A numerical example of a square pile using a UHPC jacket is included to show how the flexural strength design …
Seismic performance of full-scale UHPC-jacket-strengthened RC …
WEBSep 15, 2021 · This study experimentally investigated the seismic behavior of Ultra-High-Performance Concrete (UHPC) columns after fire exposure. The experimental program included six concrete column specimens … Expand
Axial compressive performance of RC columns strengthened with ...
WEBJul 9, 2024 · By incorporating spiral stirrups in the UHPC jacket, the phenomenon of uneven fragmentation during the failure of the strengthened column is improved. This helps prevent premature shearing damage of CFRP and enhances the fracture strain and effective utilization of CFRP.
Fragility-based effectiveness evaluation of reinforced concrete …
WEBAug 1, 2023 · The use of ultra-high-performance concrete (UHPC) jackets as a seismic strengthening method for reinforced concrete structures has become increasingly prevalent. Specifically, these jackets are applied to plastic hinge regions of the structures to improve overall earthquake resistance.
Cast-in-place and prefabricated UHPC jackets for retrofitting …
WEBDec 1, 2021 · This study experimentally evaluated three new UHPC jacketing strategies for retrofitting shear-deficient reinforced concrete (RC) columns, including cast-in-place UHPC jackets with or without steel bar mesh and prefabricated UHPC panels with steel bar mesh.