Ply angle effect on fiber composite wrapped reinforced concrete beam–column connections under combined axial and cyclic loads

Parvin, Azadeh; Wu, Shanhong

doi:10.1016/j.compstruct.2007.02.004

Cited by 32 publications

(20 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 shows correspondence between the results of the study by Parvin and Wu [22] and those obtained by the proposed model for load-displacement of the control joint. The proposed numerical results are consistent (2 % to 7 % difference) with the work presented by Parvin and Wu [22]. The failure load (42.7 kN) had 5.4 % difference compared with the failure load of study by Parvin and Wu [22].…”

Section: Resultssupporting

confidence: 67%

“…A CFRP-wrapped beam-column joint under combined axial and cyclic loadings, which was previously reported in the literature [22], was used to validate the accuracy of the proposed model. The CFRP-wrapped beam-column was tested by Gergely et al [39] Fig.…”

Section: Resultsmentioning

confidence: 99%

“…They found better action of FRP sheets than strips, improving energy dissipation due to GFRP over CFRP, the helpful effect of added axial load of column on shear capacity, and increased impressiveness of the FRP because of less reinforcement in the joint. A numerical model was presented to study the effect of ply angle on the enhancement of shear capacity of the joint strengthened with CFRP by Parvin and Wu [22]. It showed that four covers of wrapping located at ±45 with regards to the horizontal directions were satisfactory for better shear capacity of the joint.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

Shahbazpanahi¹

2018

J. vibroeng.

View full text Add to dashboard Cite

Accurate modeling is required to investigate the behavior of concrete structures strengthened by carbon fiber-reinforced polymer (CFRP). There is, however, limited knowledge on the use of dynamic modeling to study the crack propagation in the beam-column joints strengthened by CFRP. A finite element model is developed to study crack propagation in the CFRP-strengthened joints under dynamic loads. A three-dimensional model is developed to predict the crack propagation under cyclic loading in the ABAQUS software. In this study, dynamic fracture analysis is used to model the crack propagation in the concrete material. Furthermore, the model is used to predict dynamic debonding in CFRP strengthened with the fracture mechanics approach. The results of the present study showed a good agreement with previous experimental results by about 7.1-11.6 %. The proposed model indicates that the crack propagation is controlled by using CFRP composites in the beam-column joint. Furthermore, it is observed that the width of strut zone in the joint increases by the using of FRP strengthening.

show abstract

Section: Resultssupporting

confidence: 67%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

Shahbazpanahi¹

2018

J. vibroeng.

View full text Add to dashboard Cite

show abstract

“…Different reported techniques involved either strengthening or retrofitting for deficient or damaged RC structures and their limitations are critically reviewed by D' Ayala and Charleson (2002), Said and Nehdi (2004) Engindeniz et al (2005). Few advanced studies have also been reported, like influence of roundness of concrete corners for FRP wrapping (Al-Salloum 2007), bond behaviour of FRP with concrete surface (Lau and Zhou 2001) or orientation of fibres on the performance (Parvin and Wu 2008) of the retrofitted schemes, would provide further essential information to develop a better and more efficient retrofitting scheme using FRP for damaged or deficient RC components. Experimental investigation on shear strength enhancement of RC beams externally reinforced with FRP composites (carbon/epoxy wet layup, E-glass/epoxy wet layup and carbon/epoxy precured strips) was carried out by Mosallam and Banerjee (2007).…”

Section: Introductionmentioning

confidence: 98%

Seismic retrofitting of damaged exterior beam–column joints using fibre reinforced plastic composite–steel plate combined technique

Sasmal

Novák

Ramanjaneyulu

et al. 2010

Structure and Infrastructure Engineering

View full text Add to dashboard Cite

A conventional gravity load design philosophy for reinforced concrete (RC) structures has been slowly replaced by seismic design since the 1970s. But, till recently, capacity design and ductile detailing were not strictly implemented in practice in many developing countries which are prone to seismic hazard. In the present study, performance of exterior beam-column joints designed based on ductile and non-ductile philosophy has been studied under cyclic load. It is found that although the incorporation of ductile detailing has considerably improved the seismic behaviour of the structural component, it could not assure the damage propagation in a safe zone. Moreover, in both specimens, the main damage has been concentrated in the joint zone irrespective of ductile detailing. Further, the damaged specimens were adequately repaired and suitably retrofitted using fibre reinforced plastic and steel plate and tested again under the same cyclic load. The retrofitted 'NonDuctile' specimen, as proposed in this study, could not only be able to regain its original performance (in terms of strength deterioration, stiffness degradation, energy dissipation), but has also shown improved performance in comparison to the original ones which is ideally desirable as well. Further, the retrofitted 'Ductile' specimen has shown a promising aspect of the proposed retrofitting strategy for seismically damaged components.

show abstract

“…They highlighted that mechanical anchorages can significantly eliminate premature debonding of FRP to increase the effectiveness of the strengthening method. Recently, several research studies [5][6][7][8][9][10] have been published on the effectiveness of many different FRP retrofitting configurations for retrofitting RC beam-column connections. Gergely et al [3] and Almusallam and Al-Salloum [11] introduced analytical models for predicting shear capacity of the FRP-strengthened beam-column connections.…”

Section: Introductionmentioning

confidence: 99%

Retrofitting nonseismically detailed exterior beam–column joints using concrete covers together with CFRP jacket

Hadi

Tran

2014

Construction and Building Materials

View full text Add to dashboard Cite

This paper introduces a new method for retrofitting reinforced concrete (RC) exterior beamcolumn T joints, using segmental circular concrete covers together with Carbon Fibre Reinforced Polymer (CFRP). Two RC T connections without transverse reinforcement at the joints were cast and tested. The first connection (Strengthened specimen, TS) was glued with the concrete covers around the column at the joint area to modify it from a square to a circular section and then it was wrapped with CFRP to strengthen its capacity. A load was first applied on the second connection (Repaired specimen, TR) to cause a serious failure then it was repaired. The repair scheme of the second connection was identical to the first connection. Results of testing the two connections have shown that the performances of both the strengthened and the repaired connections were improved significantly. The glued concrete covers worked well with the existing concrete to resist shear load. Moreover, the wrap on the modified circular sections helped in increasing the effectiveness of CFRP by increasing the confinement effect on the concrete and reduce the possibility of debonding of CFRP at the joints.

show abstract

Ply angle effect on fiber composite wrapped reinforced concrete beam–column connections under combined axial and cyclic loads

Cited by 32 publications

References 10 publications

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

The development of a dynamic fracture propagation model for FRP-strengthened beam-column joints

Seismic retrofitting of damaged exterior beam–column joints using fibre reinforced plastic composite–steel plate combined technique

Retrofitting nonseismically detailed exterior beam–column joints using concrete covers together with CFRP jacket

Contact Info

Product

Resources

About