Comportement sismique d'un système formé de murs couplés tronqués et d'un cadre

2001 ◽  
Vol 28 (4) ◽  
pp. 752-758
Author(s):  
O Chaallal ◽  
P Malenfant ◽  
M -J Nollet
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Ductility Demand ◽  
Soft Story ◽  
Plastic Mechanism ◽  
Wide Range ◽  
Frame System ◽  
Seismic Records ◽  
Frame Systems

This paper presents results of a numerical investigation on the nonlinear seismic behavior of a reinforced concrete system made of truncated coupled shear walls (CSWs) and a frame. The objective of the study is twofold: (a) examine the seismic behavior of CSW–frame systems with setbacks and (b) verify the adequacy of the National Building Code (NBC) as far as the design of such systems. The study considers two types of CSWs, coupled and partially coupled, two Canadian seismic zones, 4 and 6, six different levels of setbacks, and 10 historic seismic records encompassing a wide range of frequency content. Results of the study show that the CSW–frame system with no setback offers a satisfactory seismic behavior with regards to the sequence of plastification and the ductility demand. For the truncated systems, the NBC recommendations that the static method is not adequate is justified. Also, in the presence of setbacks, the columns show a higher degree of plastification with a possibility of formation of plastic mechanism (soft story). The ductility demand is also higher and can exceed the accepted practical limit in certain cases.Key words: coupled shear walls, frame, reinforced concrete, setback, seismic behavior, code.

Study on Seismic Behavior of the L-Shape Steel Reinforced Concrete Short-Pier Shear Wall with Different Concrete Strength

2013 ◽  
Vol 353-356 ◽  
pp. 1990-1999
Author(s):  
Yi Sheng Su ◽  
Er Cong Meng ◽  
Zu Lin Xiao ◽  
Yun Dong Pi ◽  
Yi Bin Yang
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Seismic Performance ◽  
Seismic Behavior ◽  
Concrete Strength ◽  
Shear Walls ◽  
Shear Wall ◽  
Simulation Software ◽  
Steel Reinforced Concrete ◽  
Shrinkage Effect

In order to discuss the effect of different concrete strength on the seismic behavior of the L-shape steel reinforced concrete (SRC) short-pier shear wall , this article analyze three L-shape steel reinforced concrete short-pier shear walls of different concrete strength with the numerical simulation software ABAQUS, revealing the effects of concrete strength on the walls seismic behavior. The results of the study show that the concrete strength obviously influence the seismic performance. With the concrete strength grade rise, the bearing capacity of the shear wall becomes large, the ductility becomes low, the pinch shrinkage effect of the hysteresis loop becomes more obvious.

scholarly journals Seismic Behavior of Low-Aspect-Ratio Reinforced Concrete Shear Walls

2015 ◽  
Vol 112 (5) ◽  
Author(s):  
Bismarck N. Luna ◽  
Jonathan P. Rivera ◽  
Andrew S. Whittaker
Keyword(s):  
Reinforced Concrete ◽  
Aspect Ratio ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Low Aspect Ratio

Evaluation of the period and soft story conditions of reinforced concrete buildings with and without infill walls

2021 ◽  
Vol 7 (3) ◽  
pp. 151
Author(s):  
Başak Zengin
Keyword(s):  
Reinforced Concrete ◽  
Shear Walls ◽  
Structural System ◽  
Infill Wall ◽  
Infill Walls ◽  
Earthquake Energy ◽  
Ground Floor ◽  
Earthquake Loads ◽  
Soft Storey ◽  
Soft Story

Since the ground floor of most of the buildings in our country is designed as a shop or ground floor (in the buildings created as a workplace), there is very little infill wall ratio on the ground floors due to architectural and functional reasons, and some of them do not even exist at all. However, infill walls significantly increase the horizontal rigidity and strength of the structure, thus causing a decrease in the period value that determines the earthquake loads that will affect the structure. However, the infill wall meets the first destructive forces of the earthquake, and during this time, it cracks and absorbs some of the earthquake energy. The structural system elements of the building (columns and shear walls) start to meet the earthquake forces only when the infill walls are damaged and fail. In this direction, the aim of this study is to investigate to what extent the amount of infill wall on the ground floor affects the period of the building, and whether there are soft storey irregularities in the building according to the change in the amount of infill wall on the ground floor. In this study, while there are infill walls on all floors and all axes of buildings of various heights (3, 6, 9 and 11 floors), the amount of infill walls in the x and y directions on the ground floors is reduced to a certain extent, and many models are created until the ground floor is completely without infill walls. All these models created were analyzed with the support of the SAP2000 program, and the period values were determined and examined according to the soft storey problems and compared with the case of the entire building with and without infill walls. In addition, it was examined whether the period formulas determined as a result of the studies and taking into account the infill wall give realistic results for the situation examined in this study.

Seismic behavior of CFST-enhanced steel plate-reinforced concrete shear walls

2016 ◽  
Vol 119 ◽  
pp. 176-189 ◽  
Author(s):  
Hong-Song Hu ◽  
Jian-Guo Nie ◽  
Jian-Sheng Fan ◽  
Mu-Xuan Tao ◽  
Yu-Hang Wang ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Steel Plate ◽  
Shear Walls
Sign in / Sign up

Export Citation Format

Share Document