Influence of Openings, With and Without Confinement, on Cyclic Response of Infilled R-C Frames — An Experimental Study

Sigmund, Vladimir; Penava, Davorin

doi:10.1080/13632469.2013.817362

Cited by 74 publications

(60 citation statements)

References 9 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Additionally, the so-called pillow effect can occur due to weak physical properties of clay blocks parallel to bed faces, as described in [16].…”

Section: Discussionmentioning

confidence: 99%

Šuplje ziđe od opeke i međusobni spoj sa sljubnicama morta

Penava¹,

Sigmund²,

Kožar³

et al. 2016

JCE

View full text Add to dashboard Cite

If clay blocks with vertical voids and general-purpose mortar are used in masonry construction, interlocking will occur during placement of units and mortar. Shear strength of the clay block and solid brick masonry is usually determined in the same way, without taking interlocking into consideration. With interlocking, the tensile strength of clay blocks is reached before mortar bed joint sliding occurs. In order to consider the effect of interlocking in nonlinear analyses, three-dimensional design models were built and verified using physical model response. The shear resistance function was adopted to enable proper description of masonry response. Povezivanje u spoju mortom u ziđu od opečnih blokova Ako se pri izvedbi konstrukcijskog ziđa upotrebljevaju opečni zidni elementi s vertikalnim šupljinama i mort opće namjene, tijekom ispunjavanja sljubnica nastupa prodiranje morta u šupljine zidnog elementa. Otpornost pri posmiku određuje se na jednak način za ziđe od punih ili šupljih opečnih zidnih elemenata te stoga utjecaj međusobnog spoja zidnih elemenata i sljubnica morta nije uzet u obzir. Pomoću prostornih nelinearnih proračunskih modela i usporedbom s odzivom fizikalnih modela provjeren je utjecaj međusobnog spoja šupljih zidnih elemenata i sljubnica morta na posmičnu nosivost. Građevinar 8/2016 610 stress. Therefore, the influence of interlocking is not considered. Additionally, the limit to the shear strength value is set to the masonry unit tensile strength normal to the bed face, i.e., f vlt = f mu,t,h = 0.065•f mu,c,h, where f mu,c,h is the corresponding masonry unit compressive strength. Thus, physical properties of the clay blocks parallel to the bed face, e.g., f mu,c,b , are not accounted for, with the exception of f mu,c,b,min = 2 N/mm 2 according to [2]. The influence of interlocking on the shear strength of the clay block masonry was investigated in this paper. Tests were conducted along the mortar head and bed joints with and without interlocking, respectively. Physical properties of the clay blocks normal and parallel to the bed face were determined in compliance with [5,6]. Masonry specimens (physical models) for shear strength tests were built according to [7]. Physical properties of clay blocks and masonry bond were used to build three-dimensional design models in a computer program [8] in order to adequately present interlocking in non-linear analyses. The shear strength of clay block masonry was equal to the tensile strength of clay blocks parallel to the bed face. The interlocking of mortar bed joints in the design model was successfully described by the shear resistance function.GRAĐEVINAR 68 (2016) 8, 609-616

show abstract

“…Additionally, the so-called pillow effect can occur due to weak physical properties of clay blocks parallel to bed faces, as described in [16].…”

Section: Discussionmentioning

confidence: 99%

Šuplje ziđe od opeke i međusobni spoj sa sljubnicama morta

Penava¹,

Sigmund²,

Kožar³

et al. 2016

JCE

View full text Add to dashboard Cite

show abstract

“…Typically, this interaction significantly affects the behaviour of the structure [3][4][5][6] and renders the predict of the actual collapse mechanism rather difficult [7,8]. Moreover, the infill walls are ignored in the analysis and design because of uncertainties related to their of infill walls.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the in‐plane response of earthen masonry infill panels partitioned by sliding joints

Preti

Bettini

Migliorati

et al. 2016

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

SUMMARYThe vulnerability of infilled frames represents a critical issue in many regions with high seismicity around the world where infills are typically made of heavy masonry as they are used for thermal control of the buildings because of their thermal inertia. In this context, the use of earthen masonry infills can give a superior performance because of their ability to regulate thermal-hygrometric performance of the building and sustainability of its life-cycle.This paper presents a numerical study on the seismic behaviour of infill walls made of earthen masonry and partitioned with horizontal wooden planks that allow the relative sliding of the partitions. The combination of the deformability of earthen masonry and the sliding mechanism occurring along the wooden planks gives a high ductility capacity to the in-plane response of the infill and, at the same time, significantly reduces its stiffness and strength, as compared with traditional solid infills made of fired clay units. As a result, the detrimental interaction with the frame and the damage in the infill when subjected to in-plane loading can be minimized.The numerical model is validated with results from an experimental study and is used to perform a parametric analysis to examine the influence of variations in the geometry and mechanical properties of the infill walls, as well as the configuration of the sliding joints. Based on the findings of this study, design guidelines for practical applications are provided, together with simple formulation for evaluating their performance.

show abstract

“…In the report of 2011 Van earthquake in Turkey [12], it was stated that infill walls made structures very stiff, therefore limited the lateral drifts as long as they kept their integrity inside the confining frames. In some cases, infill walls caused sudden changes in the lateral stiffness due to out-of-plane failure Although researches have been enriched and analytical methods have been significantly improved over the last decades [13][14][15][16][17][18], it is still difficult to precisely describe the interaction between infill walls and the main structure [19,20]. It is not only because the characterization of masonry infill is discrete, but the contacting interface between infill walls and the surrounding frame also keeps changing as time goes by.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance of a New Type of Fabricated Tie-Column

et al. 2018

View full text Add to dashboard Cite

Abstract:The reinforced concrete (RC) frames infilled with masonry walls are widely used in buildings. It has been well recognized that the arrangement of tie-columns can improve the wall integrity and seismic performance. However, the existing cast-in-situ tie-column (CSTC) has some problems, and a new type of fabricated tie-column (FTC) which can be recycled for secondary use is proposed in this study. Two specimens, the wall constrained by the cast-in-situ tie-columns (W-CSTC) and the wall constrained by the fabricated tie-columns (W-FTC), were designed and constructed. Low cyclic loading tests were carried out and some parameters, such as the failure modes, hysteretic curves and so forth, were used to evaluate the applicability of the FTC. The results show the W-FTC has a certain initial stiffness and strength, favorable deformation capacity, and the FTC can not only enhance the wall integrity to meet the functional requirements of tie-columns, but also solve the connection problems and reduce the adverse effects on the frame structure.

show abstract

Influence of Openings, With and Without Confinement, on Cyclic Response of Infilled R-C Frames — An Experimental Study

Cited by 74 publications

References 9 publications

Šuplje ziđe od opeke i međusobni spoj sa sljubnicama morta

Šuplje ziđe od opeke i međusobni spoj sa sljubnicama morta

Analysis of the in‐plane response of earthen masonry infill panels partitioned by sliding joints

Seismic Performance of a New Type of Fabricated Tie-Column

Contact Info

Product

Resources

About