Behavior of RC exterior beam column joint retrofitted using UHP-HFRC

Sharma, Raju; Bansal, Prem Pal

doi:10.1016/j.conbuildmat.2018.11.052

Cited by 81 publications

(27 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where, d M is the maximum deformation within the considered cycle, d u is the ultimate deformation under monotonic loading, Q y is the calculated yield strength, b is a non-negative strength degradation parameter, Ð dE means the cumulative energy dissipation of considered cycle. Due to the insufficient data, the Q y and d u were estimated by P y and D u from the envelope curves of specimens (shown in Table 1) (Sharma and Bansal, 2019), the b was taken as 0.1 in this study (Altoontash, 2004). The calculated results were depicted in Figure 12.…”

Section: Damage Indexmentioning

confidence: 99%

Effect of recycled aggregate concrete on the seismic behavior of DfD beam-column joints under cyclic loading

Chen

Ding

Xia

2020

Advances in Structural Engineering

View full text Add to dashboard Cite

The problem of environmental pollution and waste concrete generation will be alleviated if concrete structures can be designed with both recycling and reuse strategies. In this regard, this study employed recycled coarse aggregate as the structural material in a novel beam-column joint with Design for Deconstruction (DfD) connections. Two series cyclic loading tests including pre-loading and re-loading on this frame joint was undertaken and the effect of recycled aggregate concrete (RAC) on structural behaviors was carefully evaluated. It is demonstrated that the DfD joint with RAC had favorable integrity and the influence of RAC was acceptable for practical application. Furthermore, the shear force model of the joint core area for RAC beam-column joint with DfD connections was put forward in this study, which showed good agreements with experimental results. Life cycle assessment (LCA) indicated that the carbon emission of the beam-column joint with DfD connections made of RAC increased at construction process but would reduce the total carbon emission from the perspective of lifetime.

show abstract

Section: Damage Indexmentioning

confidence: 99%

Effect of recycled aggregate concrete on the seismic behavior of DfD beam-column joints under cyclic loading

Chen

Ding

Xia

2020

Advances in Structural Engineering

View full text Add to dashboard Cite

show abstract

“…Sharma. It was clearly interpreted from the results that the implementation of ultra high performance on the repairing works enhanced the load carrying capacity along with the greatest improvement in the energy absorption capacity (R. Sharma, 2019). A new type of composite column with geopolymer concrete in lled in the steel tube is developed by Z. Zhou in 2020.…”

Section: Introductionmentioning

confidence: 99%

Novel Ductile Enhancement in the Structural Characteristics of External Beam Column Joint with Potassium Activated Green Concrete Technology: An Artistic Establishment of Seismic Challenging Structures

R¹

2021

Preprint

View full text Add to dashboard Cite

Ductility and energy dissipation capacity of the beam column joints are the two prominent characteristics which governs the stability of the entire structure constructed in the seismic prone areas. In this paper, the effect of potassium activated geopolymer concrete in the exterior beam column joint application is investigated under low frequency cyclic loading. Numerical analysis has been done by using the finite element software Abaqus and compared with the experimental work. From the load deformation relationship, parametric studies are carried out in the aspects of ductility, stiffness degradation, energy dissipation capacity, drift ratio and cracking pattern. The use of potassium activated geopolymer technology in the exterior beam column joint application resulted in the improved ductility, energy dissipation capacity with superior ultimate load carrying capacity of 1.05% over conventional cement reinforced concrete beam column joints with special confining reinforcement confirmed by IS 13920 due to the enormous polymerisation activated by high molecular potassium ions.2.78% improved energy dissipation capacity of potassium based geopolymer specimen resulted in the lesser number of non structural cracks and 11.26% more deformation under 11.96% enlarged drift ratio than the conventional reinforced concrete specimen. From the observed results it is clearly noted that the implementation potassium activated green polymer technology in the beam column joints possessed enhanced ductility characteristics to protect the structure susceptible to seismic environment and resulted in the innovative, economical and sustainable mode of seismic resistant building construction.

show abstract

“…Several past earthquakes have demonstrated many collapses of buildings due to the brittle failure of gravity load designed external reinforced concrete (RC) beam‐column connections . Beam‐column connections in RC moment frames are key components to guarantee integrity and overall stability when the frame is subjected to seismic loading . Many existing RC structures were designed before the development of seismic codes.…”

Section: Introductionmentioning

confidence: 99%

Effect of different size of joint enlargement on seismic behavior of gravity load designed RC beam‐column connections

Shafaei

Nezami

2019

Structural Design Tall Build

View full text Add to dashboard Cite

Summary Effect of different size of planer joint enlargement as a noninvasive and practical strategy for seismic retrofit of gravity load designed external reinforced concrete beam‐column connections was experimentally investigated. The joint region was enlarged using steel angles that are mounted using prestressed cross‐ties. Reverse cyclic load tests on five half‐scale control and retrofitted external RC beam‐column connections were conducted. Three different size of planer joint enlargement being 180, 140, and 90 mm were considered for retrofitted specimens. The performance of the retrofitted specimens is compared with that of the control gravity load designed beam‐column connections, in terms of load–displacement hysteresis curve, energy dissipation and ductility capacities, and global strength and stiffness degradation behavior. The experimental results showed that increasing the size of planer joint enlargement significantly enhances the seismic capacity of the retrofitted connections, in terms of strength, stiffness, energy dissipation, and ductility capacity and also planer joint enlargement can relocate beam plastic hinges to outside the joint panel.

show abstract

Behavior of RC exterior beam column joint retrofitted using UHP-HFRC

Cited by 81 publications

References 34 publications

Effect of recycled aggregate concrete on the seismic behavior of DfD beam-column joints under cyclic loading

Effect of recycled aggregate concrete on the seismic behavior of DfD beam-column joints under cyclic loading

Novel Ductile Enhancement in the Structural Characteristics of External Beam Column Joint with Potassium Activated Green Concrete Technology: An Artistic Establishment of Seismic Challenging Structures

Effect of different size of joint enlargement on seismic behavior of gravity load designed RC beam‐column connections

Contact Info

Product

Resources

About