Seismic Protection of RC Buildings by Polymeric Infill Wall-Frame Interface

Akyildiz, Ahmet Tugrul; Kowalska-Koczwara, Alicja; Hojdys, Łukasz

doi:10.3390/polym13101577

Cited by 6 publications

(4 citation statements)

References 55 publications

(81 reference statements)

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“…Their high efficiency has been verified by the cyclic push-over experiments [17,24], tests on a seismic table [25,26] and harmonic dynamic force resonance excitations [16]. The behavior of PUFJ and FRPU protected structures was also analyzed using numerical models [13,27,28].…”

Section: Pufj and Frpu Methods As Effective Protection Solutions Of T...mentioning

confidence: 96%

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Earthquake protection of reinforced concrete structures with infill walls using PUFJ and FRPU systems

2023

Archives of Civil Engineering

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Advancements in technology and material sciences lead new solutions to be used in civil engineering. PolyUrethane Flexible Joints (PUFJ) and Fiber Reinforced PolyUrethanes (FRPU) are among those innovative solutions. PUFJ implemented systems comprise of seismic preventive buffer material between masonry infill walls and reinforced concrete (RC) frames, whereas FRPU solution is designed for covering the wall surfaces with thin composite strips. Both methods are primarily developed for increasing the ductility capacities of buildings while sustaining the overall structural strength without compromising on the safety of these systems against earthquakes. In this article, test results of the quasi-static cyclic experiments as well as dynamic tests on the shake tables including harmonic forces operating in resonance are presented. Moreover, numerical analyses are performed in order to comprehend the behavior of PUFJ implemented frames constituted with different masonry materials than above which are under various loading conditions. The outcomes confirmed the high efficiency of the proposed solutions, which at the same time meet the strict requirements of the modern seismic standards.

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Section: Pufj and Frpu Methods As Effective Protection Solutions Of T...mentioning

confidence: 96%

“…Detailing of the RC elements and joints was similar of the ZAG tests. Material properties were adapted from the previous experimental [31,32] and numerical [27] results.…”

Section: Numerical In-plane Analyses For Testing Different Materials ...mentioning

confidence: 99%

Earthquake protection of reinforced concrete structures with infill walls using PUFJ and FRPU systems

2023

Archives of Civil Engineering

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“…This technique is most frequently used in the modeling of this type of walls, to perform linear / nonlinear static or dynamic analyzes due to its simplicity and the lower computational effort required. Most technical codes also suggest a macro-modeling approach for the seismic response of infilled-frame structures [12][13][14][15][16] The second approach treats the masonry infill wall as a continuum, without differentiating between the different components of the wall, given the resistance and equivalent resistance [17,18].…”

Section: Introductionmentioning

confidence: 99%

Seismic behavior of reinforced concrete buildings using chained masonry walls randomly located

Nour

Benanane

Varum

2022

Rev.Fac.Ing.Univ.Antioquia

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The widespread use of masonry infill walls in the most prone zones to earthquakes, for the execution of multistoried reinforced concrete buildings, as well as the recorded damage caused by earthquakes, have forced us to study their influence on the seismic behavior of these buildings. The distribution of masonry infill walls in these buildings is mainly related to their architectural requirements. The purpose of this article is to assess the influence of the various locations of chained masonry walls, which represent a particular type of masonry infill walls without gaps, on multistoried reinforced concrete buildings. This variation has been studied using the SAP finite element software, by the pushover method, analyzing several two-dimensional multistoried reinforced concrete frames infilled by double-leaf hollow brick walls. The proposed frames have been analyzed by varying the position of the chained masonry walls, based on the seismic criteria of the period, elastic base shear, elastic lateral displacement, ultimate base shear, and initial stiffness. The results were compared according to the above criteria. After comparing the results, it is very clear that the position of the masonry walls has a great influence on the seismic response of the reinforced concrete frames. Therefore, it is very important to take into account the position of the infill in the design phase.

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“…The reinforcement technology usually involves bonding of, steel bars, sheets (flat bars) or fibre-reinforced polymer composites in the tension zone of a component using epoxy adhesives [ 17 , 18 , 19 , 20 ]. Flexible adhesives on the other hand find application mostly in repair of masonry and concrete structures [ 3 , 21 ] and seismic protection of buildings where dissipation of energy and reduction of edge stresses are desirable [ 22 , 23 ]. Lasowicz et al [ 24 ] studied the effectiveness of flexible polyurethane adhesive in vibration reduction of a structure subjected to dynamic loads.…”

Section: Introductionmentioning

confidence: 99%

Rigid and Flexible Double Shear Lap Adhesive Joint at Elevated Temperature—An Experimental Study

Śliwa-Wieczorek

Zając

2021

Polymers

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Double lap adhesive connections made of Sika® PS and Monolith EP2579-1 were studied experimentally in shear tests. The destructive shear tests were conducted under a quasi-static load at 20 °C and 80 °C. The aim was to study the impact of elevated temperature on the load capacity of the joint and make a comparative analysis of the results for two types of adhesives: polyurethane Sika® PS (flexible) and epoxy Monolit EP 2579-1 (rigid). The impact of adhesive layer thickness (t = 1, 2 and 4 mm) on the structural response of the joint was tested in two temperature ranges. A distinct impact of the temperature on the joint deformability was noticed. A visual assessment of the joint failure was performed and the initiation and form of failure was described. At 20 °C, the ultimate loading for epoxy adhesive joint depending on the joint thickness (t) was greater than for the polyurethane joint by, respectively, 282% for t = 1 mm, 88% for t = 2 mm and 279% for t = 4 mm. It was proved that the temperature increases to 80 °C in case of both adhesives reduces the mean destructive force in comparison with the measurements made at 20 °C. For the Sika® PS (PUR two-component polyurethane) adhesive, the greatest load capacity decrease was measured for the joint of thickness t = 2 mm (55%), and in case of the epoxy adhesive for the joint of thickness t = 4 mm (89%). It was found that after reaching the destructive force the flexible joints retain a partial load capacity contrary to the rigid joints.

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Seismic Protection of RC Buildings by Polymeric Infill Wall-Frame Interface

Cited by 6 publications

References 55 publications

Earthquake protection of reinforced concrete structures with infill walls using PUFJ and FRPU systems

Earthquake protection of reinforced concrete structures with infill walls using PUFJ and FRPU systems

Seismic behavior of reinforced concrete buildings using chained masonry walls randomly located

Rigid and Flexible Double Shear Lap Adhesive Joint at Elevated Temperature—An Experimental Study

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