Analysis of shear wall structures of variable cross section

Wdowicki, Jacek; Wdowicka, E.

doi:10.1002/tal.581

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…Earthquake-resistant systems such as frame-shear structures [1][2][3] and moment-resisting frames [4][5][6] have been studied and widely used in seismic regions. However, under strong earthquakes, the energy is dissipated by the material nonlinearity of the structures and damages are inevitable.…”

Section: Introductionmentioning

confidence: 99%

Upgraded parameter model of frame pin‐supported wall structures

Zhou

Yao

Chen

et al. 2021

Structural Design Tall Build

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Summary A frame pin‐supported wall structure (FPWS) is a typical rocking structure that releases constraints at the bottom of the wall. The existing studies have demonstrated that FPWSs can control the structural deformation effectively. A distributed parameter model (DPM), which consists of a flexural beam and a shear beam connected by infinitely rigid links, is used to describe the performance of FPWSs. The flexural and the shear beams represent the wall and the frame, respectively. However, there are several flaws in the DPM. For instance, (1) it is not appropriate to simplify the frame into a shear beam, (2) the infinitely rigid links cannot demonstrate the interaction between the frame and the wall properly, and (3) the stiffness variation along the height of the frame is not considered. In this study, an upgraded parameter model (UPM) was proposed to simulate the FPWS based on the DPM. Specifically, (1) a lumped mass model is employed to simulate the frame instead of the shear beam; (2) the pin‐supported wall (PW) and the frame are connected only at several positions, that is, at the floor levels; and (3) the variation of the stiffness is also considered in the UPM. The results via the UPM were compared with those using DPM and OpenSees model. A parametric analysis was then carried out using the UPM. The results indicated that the proposed UPM can describe the behavior of FPWSs accurately.

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Section: Introductionmentioning

confidence: 99%

Upgraded parameter model of frame pin‐supported wall structures

Zhou

Yao

Chen

et al. 2021

Structural Design Tall Build

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“…In addition, a new approximate method has been proposed (Bozdogan et al ., , Bozdogan, ; Bozdogan, ) based on the continuum approach, the FE method, and the so‐called transfer matrix that is able to simply and efficiently estimate the static and fundamentally dynamic characteristics of coupled walls. Moreover, a method has been proposed (Wdowicki and Wdowicka, ) for the analysis of three‐dimensional shear walls and shear core assemblies having stepwise changes in the cross‐section. This analysis is based on a variant of the continuous connection method and involves replacing the connecting beams by equivalent continuous connections.…”

Section: Introductionmentioning

confidence: 99%

Novel continuum models for coupled shear wall analysis

Curnis

Faridani

2015

Struct. Design Tall Spec. Build.

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SUMMARYReplacement beam formulations represent a family of 1D continuum models suitable for approximate analyses of the structural arrangements of buildings. In this paper, an energy equivalence approach is applied to coupled shear walls to develop suitable replacement beam models. Assuming properly compatible coupling fields between walls, a novel three-field coupled two-beam approach, therein providing shear and axial deformations, is proposed. The corresponding mathematical formulation provides closed-form solutions for simple loading cases with homogenous properties. Considering slender coupled shear walls, as typically found in tall buildings, the coupled two beams can be reduced to a two-field formulation, i.e., a parallel assembly of an extensible Euler-Bernoulli beam and a rotation-constraining beam. The latter model is solved analytically, and expressions for the tip displacement and base bending moment are presented. A finite element model is then presented and demonstrated to be an efficient tool for static and dynamic analyses. The effects of the axial deformation and degree of coupling on slender coupled shear wall responses are described as being dependent upon two suitable parameters. Various approximate relations are also proposed for design purposes. Finally, the validity of both analytical solutions and the finite element model is confirmed via numerical examples.

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