scholarly journals Optimum design of reinforced concrete shear walls

1984 ◽  
Vol 17 (3) ◽  
pp. 185-197 ◽  
Author(s):  
D. L. Hutchison ◽  
T. J. Van Geldermalsen
Keyword(s):  
Reinforced Concrete ◽  
New Zealand ◽  
Structural Design ◽  
Shear Walls ◽  
Shear Wall ◽  
Construction Cost ◽  
Code Of Practice ◽  
Wall Structures ◽  
Relative Design ◽  
Design Options

The recently published New Zealand Code of Practice for the Design of Concrete Structures (NZS 3101:1982) and the newly amended Code of Practice for General Structural Design and Design Loadings for Buildings (NZS 4203) permit a variety of possible design approaches for reinforced concrete shear wall structures. A series of wall designs for dimensionally similar four-storey and eight-storey buildings has been carried out and a comparison of construction cost estimates obtained together with an assessment of the relative design effort required for the different design options.

scholarly journals Numerical Simulation of Reinforced Concrete Shear Walls Using Force-Based Fiber Element Method

2021 ◽  
Author(s):  
MUHAMMET KARATON ◽  
Ömer Faruk Osmanlı ◽  
Mehmet Eren GÜLŞAN
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Roof Displacement ◽  
Experimental Results ◽  
Wall Structures ◽  
Longitudinal Length ◽  
Fiber Element ◽  
Element Method

Abstract Reinforced concrete shear walls are the structural elements that considerably increase the seismic performance of buildings. Fiber elements and fiber-spring elements are used for the modeling of the inelastic behavior of these elements. The Fiber Element Method provides a certain amount of accuracy for the modeling of reinforced concrete shear walls. However, the studies related to this method are still in progress. In this study, the efficiency of the force-based Fiber Element Method is investigated for different damping ratios and different damping types that used in the structural damping for reinforced concrete shear wall structures. Two shear wall structures that subjected to seismic loads are used for the comparison of numerical analysis and experimental results. The comparisons are achieved according to the absolute maximum values of the overturning moment, the base shear force, and the roof displacement. Rayleigh damping and stiffness-proportional damping types for the damping ratios that vary between 2-3% provide better results than mass-proportional damping. Additionally, the optimum number of fiber element for Rayleigh and stiffness-proportional damping types is determined for the optimum damping ratio that provides minimum differences between numerical analysis and experimental results. For these damping types, when the length of a fiber is smaller than 3% of the longitudinal length of the shear wall at the optimum damping ratios, the roof displacement differences between numerical analysis and experimental results are less than 2.5%.

scholarly journals Seismic design of public buildings

1969 ◽  
Vol 2 (4) ◽  
pp. 391-419
Author(s):  
R. B. Shephard ◽  
O. A. Glogau
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Structural Design ◽  
Shear Wall ◽  
Senior Author ◽  
Public Buildings ◽  
Code Of Practice ◽  
Coupled Shear Wall ◽  
Design Office ◽  
Junior Author

This paper is in two sections. The senior author discusses in the first section the reasons for some of the revised provisions in the current Ministry of Works, Structural Design Office, Code of Practice for the design of buildings, while the junior author deals in the second part with the application of these provisions to a reinforced concrete shear core building. He presents methods of designing and detailing a core for ductility and the effect of incremental damage to the spandrels in a coupled shear wall are examined.

scholarly journals Shear Wall Design within the Light of Prominent Standards

2020 ◽  
Vol 1 (4) ◽  
pp. 13-19
Author(s):  
Mahyar Maali
Keyword(s):  
Reinforced Concrete ◽  
Shear Walls ◽  
Shear Wall ◽  
Behavioral Differences ◽  
Rc Structures ◽  
Wall Structures ◽  
Load Effects ◽  
Live Loads ◽  
Lateral Rigidity ◽  
Seismic Forces

Reinforced concrete (RC) structures have their own weight, earthquake, wind, dead loads, live loads, creep, etc. throughout their service life. They are exposed to internal and external load effects. In order to meet the horizontal forces such as earthquake and wind from these loads affecting the structure, shear wall structures with high lateral rigidity are needed. Therefore, shear walls are one of the most important structural elements that can resist earthquake forces due to their high lateral rigidity and load bearing capacities. Most of the buildings today are designed according to the old regulations. Therefore, the shear wall was sized and reinforced according to these old regulations. However, to date, standards have been renewed in certain periods. Despite this, shear walls designed according to the old regulations continue to resist seismic forces. In this study, the design and behavioral differences of the reinforced concrete shear walls between the Turkish Regulation that came into force in 2019, and the old regulation were compared. In addition, RC shear walls were evaluated according to ACI-318-19 and EuroCode-2 regulations.

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.

Study on the shear wall structure with combined form of replaceable devices

2017 ◽  
Vol 21 (9) ◽  
pp. 1327-1348
Author(s):  
Cong Chen ◽  
Renjie Xiao ◽  
Xilin Lu ◽  
Yun Chen
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Performance Comparison ◽  
Wall Structure ◽  
Structural Part ◽  
Coupled Shear Wall ◽  
Wall Structures ◽  
Strength And Stiffness ◽  
Energy Dissipated ◽  
Resilient Structure

Structure with replaceable devices is a type of earthquake resilient structure developed to restore the structure immediately after strong earthquakes. Current researches focus on one type of the replaceable device located in the structural part that is most likely to be damaged; however, plastic deformation would not be limited in a specific part but expand to other parts. To concentrate possible damage in shear wall structures, combined form of replaceable devices was introduced in this article. Based on previous studies, combined form of replaceable coupling beam and replaceable wall foot was used in a coupled shear wall. Influences of the dimension and location of the replaceable devices to the strength and stiffness of the shear wall were investigated through numerical modeling, which was verified by experimental data. Performance comparison between the shear walls with one type and combined form of replaceable devices and the conventional coupled shear wall was performed. In general, the shear wall with combined form of replaceable devices is shown to be better energy dissipated, and proper dimensions and locations of the replaceable devices should be determined.

scholarly journals The shear strength of shear walls

1970 ◽  
Vol 3 (4) ◽  
pp. 148-162
Author(s):  
T. Paulay
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Shear Walls ◽  
Shear Wall ◽  
Reinforced Concrete Beams ◽  
Research Projects ◽  
Deep Beams ◽  
Current Recommendation ◽  
The University

To enable a comparison between the shear strength of shear walls and that of reinforced concrete beams to be made, the behaviour of the latter is briefly reviewed. The findings of research projects, related to deep beams and the effects of repeated cyclic loading, are summarised. More detailed information on the shear strength of deep beams, tested at the University of Canterbury, is presented, Particular problems associated with four classes of typical shear walls of multi-storey structures are briefly highlighted. The current recommendation of the
 SEAOC code, as applied to shear walls, are critically examined and certain
anomalies, which may ensue from their interpretation, are illustrated. Areas of research, related to the full evaluation of reinforced concrete shear wall
 behaviour, are suggested. The paper concludes with a number of design recommendations which suggest themselves from this review.

Inelastic Analysis of Reinforced Concrete Shear Wall Structures Under Seismic Excitation

1993 ◽  
Author(s):  
Ming L. Wang
Keyword(s):  
Reinforced Concrete ◽  
Response Spectra ◽  
Shear Wall ◽  
Stiffness Degradation ◽  
Structural Stiffness ◽  
Hysteresis Model ◽  
Safety Equipment ◽  
Floor Response Spectra ◽  
Wall Structures ◽  
Degradation Models

Abstract During strong ground motions, members of reinforced concrete structures undergo cyclic deformations and experience permanent damage. Members may lose their initial stiffness as well as strength. Recently, Los Alamos National Laboratory has performed experiments on scale models of shear wall structures subjected to recorded earthquake signals. In general, the results indicated that the measured structural stiffness decreased with increased levels of excitation in the linear response region. Furthermore, a significant reduction in strength as well as in stiffness was also observed in the inelastic range. Since the in-structure floor response spectra, which are used to design and qualify safety equipment, have been based on calculated structural stiffness and frequencies, it is possible that certain safety equipment could experience greater seismic loads than specified for qualification due to stiffness reduction. In this research, a hysteresis model based on the concept of accumulated damage has been developed to account for this stiffness degradation both in the linear and inelastic ranges. Single and three degrees of freedom seismic Category I structures were analyzed and compared with equivalent linear stiffness degradation models in terms of maximum displacement responses, permanent displacement, and floor response spectra. The results indicate significant differences in responses between the hysteresis model and equivalent linear stiffness degradation models. The hysteresis model is recommended in the analysis of reinforced concrete shear-wall structures to obtain the in-structure floor response spectra for equipment qualification. Results of both cumulative and one shot tests are compared.

Experimental Study on Shear Resistance of Precast RC Shear Walls with Novel Bundled Connections

2019 ◽  
Vol 13 (03n04) ◽  
pp. 1940002 ◽  
Author(s):  
Yao Chen ◽  
Qian Zhang ◽  
Jian Feng ◽  
Zhe Zhang
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Shear Walls ◽  
Shear Wall ◽  
Shear Resistance ◽  
Lower Wall ◽  
Yield Load ◽  
Steel Bars ◽  
Wall Panels ◽  
Peak Value

This study presents shear resistance of precast reinforced concrete (RC) shear walls. A novel assembling method for upper and lower wall panels is proposed, whereas vertical steel bars are grouped into bundles and effectively connected in preformed holes. To evaluate the feasibility and shear resistance of such a connection method, three specimens of precast shear walls with different horizontal steel bars have been constructed and tested under monotonic loading while subjected to a constant vertical compression. The results show that cracks mainly appear under the line that connects the midpoint of tension side and the corner of the compression side. The weak section of these shear walls is at the top of the preformed holes, and through cracks do not appear at the bottom of walls. These innovative precast shear walls are reliable, and no rebar is pulled out or seriously slipped. The yield load of the shear wall is great, and the stage between yield and failure is satisfactory. The bearing capacity declines slowly after the peak value.

Analogous frames for the analysis of tall shear wall structures

1981 ◽  
Vol 8 (2) ◽  
pp. 179-185 ◽  
Author(s):  
B. Stafford Smith ◽  
A. M. Girgis ◽  
A. Abate
Keyword(s):  
Finite Elements ◽  
Detailed Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Frame Model ◽  
Wall Structures ◽  
Single Column ◽  
Deflection Analysis

Three types of analogous frames for the stress and deflection analysis of tall shear walls are presented. They are similar to the wide column analogous frame in having horizontal flexurally rigid arms; however, they avoid the coupling of the shear and contraflexural behaviour inherent in the single column of the wide column analogy. The new analogous frames are suitable for the detailed analysis of individual shear walls or of walls connected by beams to other components. In such combined structures a frame model may be more convenient than a mixture of finite elements and frame elements.

Research of Short-Leg Shear Wall Structure System Function in Multiple Coupled Field

2012 ◽  
Vol 594-597 ◽  
pp. 2464-2469
Author(s):  
Dai Kui
Keyword(s):  
Structural Design ◽  
Shear Walls ◽  
Shear Wall ◽  
Structure Design ◽  
Wall Structure ◽  
Structural System ◽  
Field Coupling ◽  
Structural Rigidity ◽  
Story Drift ◽  
Force Characteristics

Calculation of Short-leg shear walls structural system is a multi-field coupling problem. Through the research and application of short-leg shear wall structure calculation theory, based on the national codes,the short-leg shear wall design principles are established.It is discussed for the reason of the world's first short-leg shear wall structure design formation and development research. According to short-leg shear wall force characteristics, horizonal displacement is divided into destructive story drift and harmless story drift, the formula for calculating the destructive story drift is obtained, using destructive story drift angle parameters and the change of main section height to control the deformation, to control structural rigidity to ensure the structural design rational purpose.

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