Axial compressive behaviour of steel-jacket retrofitted RC columns with recycled aggregate concrete

He, Anrui; Cai, Jianguo; Chen, Qingjun; Liu, Xinpei; Xue, Huijun; Yu, Chenjie

doi:10.1016/j.conbuildmat.2017.03.013

Cited by 47 publications

(19 citation statements)

References 18 publications

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“…Campione et al, 2014; Deng et al, 2019; Thermou et al, 2007; Vandoros and Dritsos, 2008), steel jacketing (e.g. Choi et al, 2010; He et al, 2017; Nam et al, 2009; Wang and Su, 2012; Xiao and Wu, 2003), and fiber-reinforced polymer (FRP) jacketing (e.g. Pan et al, 2018; Teng et al, 2002, 2016a; Xiao, 2004).…”

Section: Implementation Of the Strong Column–weak Beam Design Philosomentioning

confidence: 99%

The strong column–weak beam design philosophy in reinforced concrete frame structures: A literature review

Nie

Zhang

Tao

et al. 2020

Advances in Structural Engineering

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This article presents a literature review of existing research on the strong column–weak beam design philosophy, which has been widely adopted in the seismic design of frame structures. A comprehensive review of this design philosophy, including its concept and research history, especially factors affecting the accurate calculation of the flexural capacity of beams [Formula: see text] and the determination of the column-to-beam flexural strength ratio [Formula: see text], is presented first. The development of design provisions of four representative countries for this design philosophy is also reviewed. The implementation of strong column–weak beam hierarchy in real structural design is then discussed, and existing problems are pointed out. Finally, different techniques for the seismic retrofit of existing reinforced concrete frames are reviewed.

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Section: Implementation Of the Strong Column–weak Beam Design Philosomentioning

confidence: 99%

The strong column–weak beam design philosophy in reinforced concrete frame structures: A literature review

Nie

Zhang

Tao

et al. 2020

Advances in Structural Engineering

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“…Given the above considerations, it is vital to develop appropriate materials, technologies and methods to restore or even possibly increase the capacity of the deteriorated RC column so that the risk toward building collapse can be prevented. Current materials, technologies and methods for retrofitting RC column include: (a) increasing cross-section (Abdollahi et al 2012;Tsonos 2010), (b) retrofitting using steel-jacket and infill concrete to form composite structures (He et al 2017) and (c) retrofitting through confinement mechanisms using expanded metal mesh/EMM (El-kholy and Dahish 2016), fibre glass fly mesh/FGFM (Zhao and Hadi 2011), fibre-reinforced polymer/FRP (Vincent and Ozbakkaloglu 2013), steel-reinforced polymer/SRP (Napoli and Realfonso 2016), textile reinforced concrete/ TRC (Tsesarsky et al 2013), fibre reinforced cement-based matrix/FRC (Basalo et al 2012), steel ring (Safitri and Imran 2017), etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the behaviour of patched reinforced concrete column under eccentric loading: a case of compression failure

Kristiawan

Supriyadi

Sangadji

et al. 2019

Int J Adv Struct Eng

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The performance of reinforced concrete (RC) element may be deficient for a variety of causes. Correct actions should be taken to resume the performance of the deficient element to maintain the strength and serviceability of the structure. A deficient RC column element may be identified in the form of spalling of concrete cover. A patching method could be selected to recover the damaged area and, hopefully, regain the strength of the damaged RC column to its original value. This research aims to investigate the suitability of patch repair material to recover the performance of damaged RC column. The investigation is carried out by comparing the behaviour of patched RC columns with the corresponding normal RC column. The eccentric loading has been set up in this investigation to induce compression failure of the RC columns. The simulated area of damage is patched using unsaturated polyester resin mortar (UPR mortar). The results indicate that the mode of failure is not induced at the patched sections. The presence of patching causes a redistribution of stress at the patched section in such a way, so a higher stress transfer occurs in the undamaged zone and in the longitudinal reinforcements compared to those of the normal column. The capacity of the patched RC columns is only 71-92% of the normal RC column.

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“…Among these three cases, the scenario where one layer of wire mesh and two extra layers of mesh at each corner were installed showed maximum compressive strength of the column. From the analysis of the behavior of steel‐jacket strengthened concrete columns using recycled aggregate concrete instead of ordinary concrete under a compressive load, it was found that retrofitted concrete column improved strength, stiffness, and ductility of the concrete columns, but the use of recycled aggregate concrete slightly reduced the compressive strength of columns . Based on comparison of column design equations, the correlation between the flexural ductility of high‐strength concrete and a full‐range moment curvature was analyzed.…”

Section: Introductionmentioning

confidence: 99%

Experimental tests for improving buildability of construction methods for high‐strength concrete columns in high‐rise buildings

Shim

Kim

Park

2018

Structural Design Tall Build

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High-strength concrete columns have the advantage of increasing the amount of usable area in the building because the cross-section of the columns takes up less space compared with columns using normal strength concrete. However, it is difficult to weld the steel reinforcement and steel members because of the narrow column width due to a decrease in the cross-section of the column, thereby causing construction delay in many cases. In this paper, five construction methods with different details for high-strength reinforced concrete columns are tested to improve the buildability of the columns. Five specimens with different construction details were tested and analyzed based on four aspects: (a) the relationship between load and displacements, (b) strain distributions, (c) axial stiffness, and (d) crack patterns. Specimens were constructed using concrete with a compressive strength of 55 MPa, and the design strength of all five specimens were set to about 10,740 kN. From results of the experiment, the specimen with a reduced number of vertical reinforcements from 24 of HD22 (SD400, Fy = 400 MPa) to 16 of UD22 (SD600, Fy = 600 MPa) was the most effective specimen to improve the buildability of the column without deteriorating the structural performance of the reference specimen. KEYWORDS buildability of columns, construction detail, experimental test, high-rise buildings 1 | INTRODUCTION High-strength concrete columns have the advantage of increasing the amount of usable area in the building because the cross-section of the columns takes up less space compared with columns using normal strength concrete. However, because high-strength concrete columns have high compressive strength, they can show brittle fracture behaviors depending on the method of reinforcement that is used. Therefore, verifying that the columns used in construction have sufficient stiffness and deformation capacity is extremely important. [1][2][3][4][5][6] In addition, when high-strength concrete is used for construction of high-rise buildings, it is difficult to weld the steel reinforcement and steel members because of the narrow column width due to a decrease in the cross-section of the column, thereby causing construction delay in many cases. For example, as shown in Figure 1a, when a high-strength reinforced concrete mega-column of a high-rise building is joined with a steel outrigger at the upper part of the building, many construction problems arise due to the narrowness of the joint. As shown in Figure 1b, the constructability problems that can occur at the junction of the column-outrigger member can be divided into four cases: (a) when the outrigger member is connected to the inside of the column, the vertical reinforcements of the column, and the lateral reinforcements of girders and the slab are placed in a narrow space. The compact arrangement of the reinforcements reduces the constructability (anchor ties in Figure 1b should be welded to the sloping post of the outrigger, but this becomes difficult due to the lack of space). (b) The ...

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Axial compressive behaviour of steel-jacket retrofitted RC columns with recycled aggregate concrete

Cited by 47 publications

References 18 publications

The strong column–weak beam design philosophy in reinforced concrete frame structures: A literature review

The strong column–weak beam design philosophy in reinforced concrete frame structures: A literature review

Experimental investigation on the behaviour of patched reinforced concrete column under eccentric loading: a case of compression failure

Experimental tests for improving buildability of construction methods for high‐strength concrete columns in high‐rise buildings

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