An efficient analysis of continuum shear wall models

1999 ◽  
Vol 26 (4) ◽  
pp. 425-433 ◽  
Author(s):  
Kinh H Ha ◽  
TMH Tan
Keyword(s):  
Boundary Conditions ◽  
Structural Design ◽  
Stiffness Matrix ◽  
Shear Walls ◽  
Shear Wall ◽  
Arbitrary Loading ◽  
Shear Theory ◽  
Governing Differential Equation ◽  
Fixed End ◽  
The Continuum

This paper formulates the stiffness matrix and a procedure for the analysis of a general class of coupled shear walls subjected to arbitrary loading and boundary conditions. The computed solutions for both deflections and stresses are exact in the sense that they satisfy the governing differential equation of the continuum shear theory, as well as all boundary conditions and inter-element compatibility. Explicit expressions are given for the formulation of the stiffness matrix and of the fixed-end forces for common loading conditions. The theory is also applicable to shear walls having variable stiffnesses and multiple bands of opening.Key words: coupled shear walls, stiffness matrix, finite element, structural analysis, structural design.

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.

The Influence of Structural Damage on the Vibration Characteristics of Shear-Wall Buildings

2012 ◽  
Vol 193-194 ◽  
pp. 1216-1220 ◽  
Author(s):  
Kai Huang ◽  
Li Hua Zou ◽  
Jian Mei Chen
Keyword(s):  
Plastic Zone ◽  
Structural Damage ◽  
Pushover Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Internal Force ◽  
Vibration Characteristics ◽  
Wall Structure ◽  
Wall Structures ◽  
The Continuum

To understand the higher modal effect on the accuracy of pushover analysis for shear wall structure, the influence of damage on the vibration characteristics of shear-wall structures is investigated. Employing the continuum technique, the shift of modal shapes and periods for the first three modes is obtained when the plastic zone exists in the bottom of the shear wall. It can be conclude that plastic zone may enhance the higher modal effect when the internal force responses of shear walls are considered. The higher modal contribution can not be neglected when computing the nonlinear earthquake responses of shear wall structures.

scholarly journals The Effect of the Amount, Distribution and End Anchorage Conditions of Bond Beam Reinforcement on the Behaviour of Concrete Masonry Shear Walls

2020 ◽  
Author(s):  
Samira Rizaee ◽  
Shelley S Lissel ◽  
Nigel G. Shrive
Keyword(s):  
Boundary Conditions ◽  
Axial Stress ◽  
Shear Walls ◽  
Reinforcement Ratio ◽  
Lateral Loading ◽  
Dissipated Energy ◽  
Shear Design ◽  
Concrete Masonry ◽  
Fixed End ◽  
Critical Locations

The behaviour of square shape partially grouted concrete masonry shear walls with fixed end boundary conditions subjected to constant average axial stress and cyclic lateral loading was investigated. Two replicas were tested of each combination of horizontal reinforcement ratio (0.12%, 0.06% and 0.03%) and four end anchorage conditions (straight, 90°, 180° and shear studs). The behaviour of the walls was compared in terms of strength, ductility, stiffness and dissipated energy. While the effect of horizontal bar size was greater than that of end anchorage, neither improved end anchorage nor the smaller bar size increased yielding at critical locations on the rebars. The highest course of the wall should be reinforced and grouted as it improves performance of the walls. In addition, the amount of horizontal reinforcement did not significantly affect the strength of the shear walls, therefore changes to the shear design equations in the Canadian Standard are recommended.

Simplified Analysis of Staggered Wall-beam Frames

1975 ◽  
Vol 2 (3) ◽  
pp. 305-313
Author(s):  
A. L. Mee ◽  
I. J. Jordaan
Keyword(s):  
Excellent Agreement ◽  
Differential Calculus ◽  
Practical Importance ◽  
Shear Walls ◽  
Shear Wall ◽  
Bending Stiffness ◽  
Approximate Methods ◽  
Skeletal Analysis ◽  
Simplified Analysis ◽  
The Continuum

Simplified analyses of wall-beam frames, based on previously determined equivalent member stiffnesses, are given. The analyses are based on two approaches: (i) using the methods of difference calculus and (ii) using the continuum method, commonly used in shear wall analysis, in which the beams connecting the columns are replaced by a continuous connecting medium. It is shown that the analyses using difference and differential calculus are equivalent if an approximation of the column bending is introduced. Comparison of the proposed approximate methods with exact skeletal analysis shows excellent agreement. One conclusion of practical importance is that many analyses applied to shear walls, and available in the literature, may be applied to wall-beam frames as well. It is suggested that in many cases it is possible in practice to neglect the column bending stiffness altogether and details of an analysis based on this assumption are also given.

scholarly journals Deflections Estimation of Light Wood-framed Shear Walls Without Hold-Downs

2021 ◽  
Vol 248 ◽  
pp. 01073
Author(s):  
LI Jianan ◽  
Ling Wang ◽  
Xueying Hu ◽  
Tao Liu
Keyword(s):  
Structural Design ◽  
Shear Walls ◽  
Shear Wall ◽  
Lateral Loading ◽  
Light Weight ◽  
Timber Structures ◽  
Lateral Deformation ◽  
Loading Test ◽  
Wood Structures ◽  
Framed Shear Walls

In the structural design of light wood structures in recent years, people have paid more and more attention to estimating the lateral deformation of buildings. In order to better estimate the lateral deformation of the balsa shear wall without hold-downs, this paper carried out the lateral loading test of the wood shear wall and the monotonic loading test of the nail joint. A formula for lateral load-deformation of nail nodes suitable for engineering entities is proposed. A method for calculating the lateral deformation of wood shear walls without hold-downs is provided. The method is based on the formula for lateral deformation of light-weight timber structure shear walls in China's Code for Design of Timber Structures (GB50005–2017) [1]. This method complements the domestic wood structure regulations very well.

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.

Influence of the distribution of the shear walls on the seismic response of the buildings

2020 ◽  
Vol 15 (1) ◽  
pp. 37-44
Author(s):  
El Mehdi Echebba ◽  
Hasnae Boubel ◽  
Oumnia Elmrabet ◽  
Mohamed Rougui
Keyword(s):  
Structural Analysis ◽  
Seismic Response ◽  
Natural Frequency ◽  
Structural Design ◽  
Structural Response ◽  
Shear Walls ◽  
Structural Elements ◽  
Analysis Software ◽  
Ansys Apdl ◽  
The Impact

Abstract In this paper, an evaluation was tried for the impact of structural design on structural response. Several situations are foreseen as the possibilities of changing the distribution of the structural elements (sails, columns, etc.), the width of the structure and the number of floors indicates the adapted type of bracing for a given structure by referring only to its Geometric dimensions. This was done by studying the effect of the technical design of the building on the natural frequency of the structure with the study of the influence of the distribution of the structural elements on the seismic response of the building, taking into account of the requirements of the Moroccan earthquake regulations 2000/2011 and using the ANSYS APDL and Robot Structural Analysis software.

Effects of openings on the seismic behavior and performance level of concrete shear walls

2019 ◽  
Author(s):  
Hossein Alimohammadi ◽  
Mostafa Dalvi Esfahani ◽  
Mohammadali Lotfollahi Yaghin
Keyword(s):  
Static Analysis ◽  
Cross Section ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Shear Wall ◽  
Constant Cross Section ◽  
Added Resistance ◽  
Different Shapes ◽  
And Performance ◽  
Abaqus Software

In this study, the seismic behavior of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover). These case studies modeled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

Buckling of Circular Cylindrical Shells Using a Displacement Function

1974 ◽  
Vol 96 (4) ◽  
pp. 1322-1327
Author(s):  
Shun Cheng ◽  
C. K. Chang
Keyword(s):  
Boundary Conditions ◽  
Axial Compression ◽  
Cylindrical Shells ◽  
External Pressure ◽  
Displacement Function ◽  
Combined Loading ◽  
Trial Solution ◽  
Governing Differential Equation ◽  
Circular Cylindrical Shells ◽  
The Stability

The buckling problem of circular cylindrical shells under axial compression, external pressure, and torsion is investigated using a displacement function φ. A governing differential equation for the stability of thin cylindrical shells under combined loading of axial compression, external pressure, and torsion is derived. A method for the solutions of this equation is also presented. The advantage in using the present equation over the customary three differential equations for displacements is that only one trial solution is needed in solving the buckling problems as shown in the paper. Four possible combinations of boundary conditions for a simply supported edge are treated. The case of a cylinder under axial compression is carried out in detail. For two types of simple supported boundary conditions, SS1 and SS2, the minimum critical axial buckling stress is found to be 43.5 percent of the well-known classical value Eh/R3(1−ν2) against the 50 percent of the classical value presently known.

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