Performance of clay masonry veneer in wood-stud walls subjected to out-of-plane seismic loads

2010 ◽  
Vol 39 (14) ◽  
pp. 1585-1609 ◽  
Author(s):  
Hussein O. Okail ◽  
P. Benson Shing ◽  
Richard E. Klingner ◽  
William M. McGinley
Keyword(s):  
Seismic Loads ◽  
Out Of Plane

Performance of a Post-Byzantine Triple-Domed Basilica under Near and Far Fault Seismic Loads

2015 ◽  
pp. 831-867 ◽  
Author(s):  
Constantine C. Spyrakos ◽  
Charilaos A. Maniatakis ◽  
Panagiotis Kiriakopoulos ◽  
Alessio Francioso ◽  
Ioannis M. Taflampas
Keyword(s):  
Structural Damage ◽  
New Technology ◽  
Element Model ◽  
Seismic Loads ◽  
Regional Seismicity ◽  
Near Fault ◽  
Collapse Mechanisms ◽  
Before And After ◽  
Out Of Plane ◽  
Structural Parts

In this Chapter a triple-domed basilica constructed at the end of the 19th century is selected as a case study to present a methodology for the selection of the appropriate intervention techniques in monumental structures. The methodology includes in-situ and laboratory testing, application of analytical methods, consideration of geotechnical parameters and regional seismicity. Seismic loads are estimated according to contemporary and older concepts for seismic design. Since the impact of near-fault phenomena on masonry structures has not been thoroughly studied, although considered as responsible for extensive structural damage during major seismic events, a procedure is presented in order to account for the special characteristics of strong ground motion, in the so-called near-fault region. The seismic performance of the structure before and after interventions, using traditional and new technology, is assessed by applying a validated finite element model. Also, the out-of-plane behavior of structural parts is evaluated through kinematic analysis of selective collapse mechanisms.

Out-of-plane performance of a brick veneer steel-framed house subjected to seismic loads

2012 ◽  
Vol 28 (1) ◽  
pp. 779-790 ◽  
Author(s):  
Vidal P. Paton-Cole ◽  
Emad F. Gad ◽  
Charles Clifton ◽  
Nelson T.K. Lam ◽  
Carl Davies ◽  
...  
Keyword(s):  
Seismic Loads ◽  
Out Of Plane ◽  
Brick Veneer

Calculating Size Limitations of Non-Load-Bearing Walls under Seismic Loads

2012 ◽  
Vol 204-208 ◽  
pp. 2646-2652
Author(s):  
Chun Xia Yang ◽  
Qing Qing Liu ◽  
Li Juan Sun ◽  
Jian Guo Liang
Keyword(s):  
Mechanical Properties ◽  
Bearing Capacity ◽  
Thickness Ratio ◽  
Seismic Loads ◽  
Infill Walls ◽  
Load Bearing ◽  
Design Specifications ◽  
Out Of Plane

Infill walls,etc. non-load-bearing walls are vulnerable to fracture when these are subjected to out-of-plane seismic loads. Studies suggest that the overall dimensions of non-load-bearing walls are the important parameters to affect its out-of-plane mechanical properties, but most of these researches are qualitative researches, do not give specific size limitations. This paper based on codes has calculated out-of-plane loads of non-load-bearing walls, then bearing capacity check formulas have been deduced when non-load-bearing walls are subjected to out-of-plane seismic loads, finally the size limitations used in the height-thickness ratio check and seismic check are obtained.The conclusions fill up gaps in research of non-load-bearing walls ,and provide reference for the design specifications of non-load-bearing walls.

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

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1577
Author(s):  
Ahmet Tugrul Akyildiz ◽  
Alicja Kowalska-Koczwara ◽  
Łukasz Hojdys
Keyword(s):  
Three Dimensional ◽  
Mode Shapes ◽  
Dimensional Structure ◽  
Seismic Loads ◽  
Rc Buildings ◽  
Infill Wall ◽  
Infill Walls ◽  
Rc Frames ◽  
Out Of Plane ◽  
Real Size

This paper is aimed at investigating the usage of flexible joints in masonry infilled walls surrounded by reinforced concrete (RC) frames. For this purpose, a real-size specimen was numerically created and exposed to the seismic loads. In order to evaluate both in-plane and out-of-plane performances of the infill walls, the system was chosen as a box shaped three-dimensional structure. In total, three different one-story constructions, which have single bays in two perpendicular directions, were modeled. The first type is the bare-frame without the infill walls, which was determined as a reference system. The second and third types of buildings are conventional mortar joint and PolyUrethane Flexible Joint (PUFJ) implemented ones, respectively. The influence of these joints on the material level are investigated in detail. Furthermore, general building dynamic characteristics were extracted by means of acceleration and displacement results as well as frequency domain mode shapes. Analyses revealed that PUFJ implementation on such buildings has promising outcomes and helps to sustain structural stability against the detrimental effects of earthquakes.

Grain separation enhanced magnetic coercivity in Pt/Co multilayers.

1993 ◽  
Vol 51 ◽  
pp. 1038-1039 ◽  
Author(s):  
G.A. Bertero ◽  
R. Sinclair
Keyword(s):  
Remanent Magnetization ◽  
Strong Influence ◽  
Uniaxial Anisotropy ◽  
Magnetic Coupling ◽  
Recording Media ◽  
Magnetic Media ◽  
Signal To Noise ◽  
Out Of Plane ◽  
Longitudinal Recording ◽  
The Relationship

Pt/Co multilayers displaying perpendicular (out-of-plane) magnetic anisotropy and 100% perpendicular remanent magnetization are strong candidates as magnetic media for the next generation of magneto-optic recording devices. The magnetic coercivity, Hc, and uniaxial anisotropy energy, Ku, are two important materials parameters, among others, in the quest to achieving higher recording densities with acceptable signal to noise ratios (SNR). The relationship between Ku and Hc in these films is not a simple one since features such as grain boundaries, for example, can have a strong influence on Hc but affect Ku only in a secondary manner. In this regard grain boundary separation provides a way to minimize the grain-to-grain magnetic coupling which is known to result in larger coercivities and improved SNR as has been discussed extensively in the literature for conventional longitudinal recording media.We present here results from the deposition of two Pt/Co/Tb multilayers (A and B) which show significant differences in their coercive fields.

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