Investigation of precast new diagonal concrete panels in strengthened the infilled reinforced concrete frames

Aksoylu, Ceyhun; Sezer, Rıfat

doi:10.1007/s12205-017-1290-6

Cited by 22 publications

(11 citation statements)

References 8 publications

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“…There is no direct consistency in terms of stiffness point of view since the initial stiffness of a test frame is dependent on some parameters such as the quality of the workmanship in the construction of the hollow brick infill wall and plastering of the specimen, which played an important role in the displacement history in early cycles. Altin et al(2012) 1.5 1.8 RC Infill- Altin et al (2012) 2.7 6.3 Plate- Akin and Sezer (2016) 3.1 6.8 Plate- Aksoylu and Sezer (2018) 1.8 2.1 Plate- Aksoylu and Kara (2020) 2.9 3.8…”

Section: Discussion Of Experimental Resultsmentioning

confidence: 99%

“…In the studies conducted by Baran and Tankut (2011a, b), precast concrete panels were bonded on to plastered hollow bricks by means of epoxy material and it was proven experimentally that this technique is very effective in increasing the stiffness, lateral load and energy dissipation capacities of infilled RC frames whereas improving their seismic behaviour. Panels were also used by Kahn and Hanson (1979), Kaldjian and Yuzugullu (1983), Frosch et al (1996), Frosch (1999), Kesner and Billington (2005), Okuyucu (2011), Akin and Sezer (2016), Aksoylu and Sezer (2018), and Aksoylu and Kara (2020) in examining the behaviour of infilled frames. It was shown that the use of panels is an effective and convenient method to improve the frame strength and stiffness while reducing costs and saving of time.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of seismic performances of reinforced concrete frames strengthened by different techniques

Baran

2021

Lat. Am. j. solids struct.

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The aim of this study is to compare the seismic performances of strengthening techniques applied to reinforced concrete (RC) non-ductile frames tested under the effects of seismic loads. In the experimental part of the study, one-third scale, one-bay, two-storey non-ductile hollow brick infilled RC frames were strengthened with five different techniques and tested under reversed cyclic lateral loads. One being reference, five of the frames were infilled with hollow bricks and plastered on both sides, one was strengthened with plain mortar, one was strengthened with steel fiber reinforced mortar, two were strengthened with precast RC plates. The last frame was strengthened with RC infill wall. Strengthening techniques increased strength and stiffnesses of the frames in the ranges from 57% to 189% and from 186% to 486% respectively. In the numerical analysis part, an existing RC non-ductile building located in Istanbul, strengthened with the techniques, were analyzed using a computer program. Numerical results were evaluated in terms of interstorey drift ratio together with the overall seismic performance of the building.

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Section: Discussion Of Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of seismic performances of reinforced concrete frames strengthened by different techniques

Baran

2021

Lat. Am. j. solids struct.

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“…Because it plays a vital role in an increase not only in the load capacity by laterally and torsionally, but also reduces the absolute distance between the center of mass (CM) and rigidity (CR) when it is placed appropriately in the plan and elevation layout. It might be a v-, inverted v-, k-or x-bracing for steel frames [19][20][21] or masonry infill-wall for reinforced-concrete structures [22,23] respectively.…”

Section: (A) (B)mentioning

confidence: 99%

Analysis of different cross-frame placements to enhance torsional irregular buildings against structural failure under earthquake bidirectional loadings: A case study

Akyürek

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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Cross bracing frames (CFs) are employed as traditional passive energy dissipating devices, which are placed into the moment-resisting frames of the Benchmark building picked for analysis purposes. These devices are widely used, easy to construct, and inexpensive to contribute better seismic protection for existing and new buildings than complex control systems like active/passive Tuned Mass Dampers (TMDs) and so on. Therefore, in this research, the best three-predetermined CFs placements are selected. The time history analyses are made under bi-directional seismic loads such as two orthogonal excitations of El Centro in 1940, North-Ridge in 1994, and Kocaeli, Turkey in 1999. In conclusion, obtained results find out that while CFs placements into the structure can be significantly eliminating the eccentricity in the structure plan by dissipating especially torsional responses (approximately between 30% and 50% decrease) with a right engineering design perspective like Case 3, they cannot be successful enough to reduce the torsional responses without the right design vision such as Case 1 and Case 2. Therefore, Integrating CFs placements to the structure for minimizing the structural response is not always comprehensive to make the structure durability against torsional irregularity unless placed with the right engineering decision.

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“…Some other types of bracing such as commonly used high-performance structural elements, the buckling restrained bracing, may be used for lateral force-resisting systems in the structures [38], [39]. Many other techniques are used to improve the seismic behavior of structures such as hysteretic bracing systems [40], high strength diagonal precast panels [41] and for eccentric steel bracings connection (shear links) [42], [43] and these studies to understand the effectiveness of the steel bracings in the structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of position of steel bracing in L-shape reinforced concrete buildings under lateral loading

Bohara¹,

Ganaie²,

Saha³

2021

Res. Eng. Struct. Mater.

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The level of damage in irregular structures is more compared to regular structures. In this study, L shaped RC buildings are investigated with and without steel bracings in different positions in frames. The response spectrum analysis has been done by using ETABs software. The two cases considered, case I and case II for understanding the effect in inverted V bracing in L shape building. Case II shows the suitable seismic parameters when bracing is used properly. Interstory drift, displacements, base shear, fundamental time period, torsional irregularity ratio and the capacity ratio of the columns are evaluated. It is also noticed that adding the steel bracing decreases the inter-story drift, displacements of the structure effectively. The torsional irregularity ratio of each 12 models are studied carefully. The capacity ratio of the selected columns is studied to understand the performance of the columns while using the steel bracing in the buildings. The steel bracings are effectively used as retrofitting in L shaped buildings if the position of bracings are considered in the frames appropriately. While designing irregular buildings with steel bracings, the torsional effect should be checked.

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Investigation of precast new diagonal concrete panels in strengthened the infilled reinforced concrete frames

Cited by 22 publications

References 8 publications

Comparison of seismic performances of reinforced concrete frames strengthened by different techniques

Comparison of seismic performances of reinforced concrete frames strengthened by different techniques

Analysis of different cross-frame placements to enhance torsional irregular buildings against structural failure under earthquake bidirectional loadings: A case study

Effect of position of steel bracing in L-shape reinforced concrete buildings under lateral loading

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