Showing papers on "Shear wall published in 2020"
TL;DR: A machine learning model based on the Random Forest method, which has 86% accuracy in identifying the failure mode of shear walls, is proposed and an open-source data-driven classification model that can be used in design offices across the world is provided.
140 citations
TL;DR: In this article, a double-step horizontal connection and energy-dissipation structure (HES) is proposed for prefabricated shear wall structural system, which consists of an external replaceable energy dissipation (ED) zone mainly for dissipation and an internal stiffness lifting (SL) zone for enhancing the loadbearing capacity.
Abstract: This study proposed a developed horizontal-connection and energy-dissipation structure (HES), which could be employed for horizontal connection of prefabricated shear wall structural system. The HES consists of an external replaceable energy dissipation (ED) zone mainly for energy dissipation and an internal stiffness lifting (SL) zone for enhancing the load-bearing capacity. By the predicted displacement threshold control device, the ED zone made in bolted low-yielding steel plates could firstly dissipate the energy and can be replaced after damage, the SL zone could delay the load-bearing and the load-displacement curves of the HES would exhibit “double-step” characteristics. Detailed finite element models are established and validated in software ABAQUS. parametric analysis including aspect ratio, the shape of the steel plate in the ED zone and the displacement threshold in the SL zone, is conducted. It is found that the HES depicts high energy dissipation ability and its bearing capacity could be obtained again after the yielding of the ED zone. The optimized X-shaped steel plate in the ED zone exhibit better performance. The “double-step” design of the HES is a potential way of improving the seismic and anti-collapsing performance of prefabricated shear wall structures against large and super-large earthquakes.
69 citations
TL;DR: In this paper, a finite element (FE) modeling protocol for screw connected, back-to-back built-up cold-formed steel (CFS) columns was developed and validated using results from previously conducted experiments.
53 citations
TL;DR: In this article, the authors studied the seismic behavior of precast short-leg shear wall connected with the grouting sleeve, a cast-in-place shearwall (OSSW) and a PSSW were designed and produced, respectively.
40 citations
TL;DR: In this article, the cyclic behavior of low-yield-strength (LYS) SPSW with moment-resistant and pinned beam-to-column connections was investigated.
38 citations
TL;DR: In this paper, the influence of frame-to-plate connections and oblique channel-shaped stiffeners on the seismic behavior of steel plate shear walls (SPSWs) was carried out on two one-bay two-story specimens.
Abstract: To study the influence of frame-to-plate connections and oblique channel-shaped stiffeners on the seismic behavior of steel plate shear walls (SPSWs), cyclic quasi-static tests were carried out on two one-bay two-story specimens. One specimen was diagonally stiffened with two rectangular openings, and the other was multi-obliquely stiffened with one rectangular opening. The bearing capacity, ductility, degradation characteristics, and energy dissipation of two specimens were analyzed. Furthermore, following the test program, the stress distribution, deformation and fracture tendency of the two specimens were simulated by the finite element (FE) software ABAQUS and validated by the experimental results. The experimental results show that the channel-shaped stiffeners make full use of the larger flexural and torsional stiffness and improve the bearing capacity, stiffness, and elastic buckling load of the structures. Moreover, the oblique stiffeners have an obvious bracing effect, so the web of the middle beam is subjected to shear yield at the opening segment, which is similar to the link in the eccentrically braced frame. The inelastic mechanism is transferred from the steel plate to the link. In the plastic stage of the structure, the stiffened plate is basically elastic, and the seismic energy is mainly consumed by the link. Therefore, this kind of steel plate shear wall needs to consider the additional effect of the stiffeners on the boundary elements. The reasonable design of the link segment enables the frame to have enough strength to support the stiffened plate as well as avoid premature yielding at the link.
36 citations
TL;DR: In this article, the authors investigated the shear resistant behavior of double-corrugated-plate shear wall (DCPSW) via tests and additional finite element (FE) parametric study.
Abstract: Double-corrugated-plate shear wall (DCPSW), which is composed of two identical corrugated plates and assembled by connecting bolts, is an innovative type of lateral force resistant device for high-rise building structures. In this paper, the shear resistant behavior of the DCPSW is investigated via tests and additional finite element (FE) parametric study. First, the test results of two DCPSW specimens subjected to monotonic in-plane shear loads are reported. Second, FE models are introduced to perform simulations on the shear resistant behavior of the test specimens; it is seen that the numerical results fit well with the test results, and hence the FE models for simulations of the DCPSWs are validated. Then, an additional parametric study is presented by changing the geometrical parameters including aspect ratio, bolt column number, corrugation amplitude and dimensions of boundary elements of the DCPSWs. As a result, the effects of these parameters on the shear resistant behavior of the DCPSWs are further revealed. It is shown that the ultimate shear resistance of the DCPSWs increases with the increase of aspect ratio, bolt column number and corrugation amplitude, yet the dimensions of the boundary elements have little effect on the shear resistance of the embedded corrugated plates. Finally, by analyzing the results of the parametric study, some design remarks are concluded to provide valuable references for the design of the DCPSWs in practice.
36 citations
TL;DR: In this paper, the structural performance of the partially connected infill plates with different commonly used interconnections types are evaluated and compared to the corresponding conventional fully-connected infill plate systems.
Abstract: Steel plate shear walls are commonly used as structural lateral load resisting load systems in space-constrained areas. Many studies indicated that the implementation of the steel plate shear walls improves the ductility, stiffness and ultimate strength of the structure for which the interconnection of the steel infill plate with boundary members has a significant role. The typical connection of the infill shear plates to the boundary elements has a high-level fixity despite the general convenient construction procedures. In this study, the connection of the infill plates to the boundary elements are precisely investigated by establishing 57 computational models after verifying the computational modeling methodology. The structural performance of the partially connected plates with different commonly used interconnections types are evaluated and compared to the corresponding conventional fully-connected infill plate systems. It is shown that beam-only connected infill plate shear wall reduces the structural lateral load resisting capacity tangibly more than column-only connected infill plates due to limited tension field action development. In addition, by having 80% connection between infill plate with boundary elements, the lateral resisting system has at least 98.9% ultimate strength, 96.5% stiffness, 97.6% ductility and 98.6% energy dissipation capability of the steel plate shear wall with fully-connected infill steel plate.
35 citations
TL;DR: In this article, the authors used a squat reinforced concrete shear wall with boundary elements (SRCSW-BE) to resist lateral seismic loads in special structures (e.g., nuclear facilities).
Abstract: Squat reinforced concrete shear walls with boundary elements (SRCSW-BE) are used in special structures (e.g., nuclear facilities) to resist lateral seismic loads. However, several studies h...
35 citations
TL;DR: In this paper, the lateral performance of cross-laminated timber (CLT) shear walls with different construction methods (i.e., platform construction and balloon construction) was investigated.
Abstract: This paper is devoted to the investigation into the lateral performance of cross-laminated timber (CLT) shear walls with different construction methods (i.e., platform construction and balloon cons...
30 citations
TL;DR: In this article, a type of steel-concrete-steel (SCS) sandwich composite shear wall with J-hook connectors and boundary concrete-filled-steel-tube (CFST) columns was proposed.
TL;DR: In this article, the cyclic behavior of a high-strength concrete shear wall with high strength steel bars was studied and the effects of axial force ratio, the strength of distributing steel bars, the presence or absence of steel fibers, and the properties with or without wrapped steel plates on the hysteretic behavior of shear walls were analyzed.
TL;DR: In this article, the effects of rectangular openings on the lateral load-bearing behavior of the steel shear walls by the finite element method (FEM) is investigated, and the results of the FEM are used for the prediction of SPSW behavior using the artificial neural network (ANN).
Abstract: As a lateral load-bearing system, the steel plate shear wall (SPSW) is utilized in different structural systems that are susceptible to seismic risk and because of functional reasons SPSWs may need openings. In this research, the effects of rectangular openings on the lateral load-bearing behavior of the steel shear walls by the finite element method (FEM) is investigated. The results of the FEM are used for the prediction of SPSW behavior using the artificial neural network (ANN). The radial basis function (RBF) network is used to model the effects of the rectangular opening in the SPSW with different plate thicknesses. The results showed that the opening leads to reduced load-bearing capacity, stiffness and absorbed energy, which can be precisely predicted by employing RBF network model. Besides, the suitable relative area of the opening is determined.
TL;DR: In this paper, a friction-based energy dissipation hold-down connection for rocking Cross Laminated Timber (CLT) structures with potential for re-centring behavior is proposed.
TL;DR: In this paper, a finite element (FE) model was developed to simulate the structural performance of the precast concrete shear walls and validated using results of cyclic loading tests.
TL;DR: In this article, two mechanics-based analytical models (rigid-and elastic-base models) were developed for predicting the deflection and resistance of balloon-type CLT shear wall system.
TL;DR: In this paper, a parametric study of aspect ratio, bolt column number, corrugated plate thickness and yield stress of double-corrugated-plate shear wall (DCPSW) is performed to investigate their effects on the shear resistant behavior.
TL;DR: In this article, the authors investigated the shear failure behavior of four squat shear walls with high-strength steel (HSS) and high strength concrete (HSC) with or without steel fibers and showed that the addition of steel fibers in the squat walls transformed the critical damage pattern from significant concrete spalling to localized diagonal cracks.
TL;DR: The prestressed-laminated timber (Pres-Lam) system as mentioned in this paper is an innovative low-damage wood-hybrid system that utilizes post-tensioned (PT) mass timber components, e.g., laminated veneer lumber (LV...
Abstract: The prestressed-laminated timber (Pres-Lam) system is an innovative low-damage wood-hybrid system that utilizes post-tensioned (PT) mass timber components, e.g., laminated veneer lumber (LV...
TL;DR: In this paper, the authors used the artificial climate rapid freeze-thaw technique to simulate the freezethaw environment to investigate the seismic performance of reinforced concrete (RC) shear walls, and the results indicated that the flexural-shear failure of the RC shear wall shifts from a flexuredominated mode to a sheardominated one.
TL;DR: In this paper, a new connection method featuring steel connectors, applied in the precast concrete shear walls (PSWs), is firstly proposed based on the plastic damage relocation design concept.
TL;DR: In this paper, the effect of opening dimensions on the behavior of steel plate shear walls, boundary element stiffness and steel infill plate interconnection is studied computationally, and the prediction equations for steel plate wall systems with circular openings are proposed based on the regression analysis.
TL;DR: The composite steel plate shear wall (CSPSW) is a relatively new structural system which attracted many researchers in recent years as discussed by the authors, and the main idea for developing the CSPSW system is to improve the out-of-plain strength of the CSW by adding one or two layers of concrete.
TL;DR: In this article, the structural performance of curve-corrugated SPSWs with centrally-placed opening was investigated, and the effects associated with web corrugation angle, thickness, and opening size on the buckling, yielding, strength, and stiffness performances, hysteresis behavior, and energy dissipation characteristics of SPSW were investigated.
TL;DR: In this article, a parametric finite element model for light-frame timber shear walls is developed using the software OpenSees, where the equivalent viscous damping of the wall is assessed numerically, together with the damping factor adopted within the capacity spectrum method.
TL;DR: In this article, a slip-friction connection (SFC) was tested on six 152m by 304m cross-laminated timber (CLT) walls subject to static and pseudo-static cyclic loading, and the wall response followed the idealized parallelogram or flag shaped, hysteretic models observed in other slip friction systems.
TL;DR: In this paper, a cross-laminated timber (CLT) shear wall is used for mid-rise construction in the US. The purpose of this wall is to resist seismic forces.
Abstract: Seismic force resisting systems based on cross-laminated timber (CLT) shear walls have garnered considerable attention for in mid-rise construction around the world. The purpose of this stu...
TL;DR: In this article, the lateral performance of CFS shear walls sheathed with fiber cement board (FCB) and composite steel-gypsum (SG) panels is investigated.
TL;DR: Coupled shear walls (CSWs) are structural systems connecting two or more walls at the floor levels by reinforced concrete beams called coupling beams (CBs), which have good lateral stability as mentioned in this paper.
Abstract: Coupled shear walls (CSWs) are structural systems connect two or more walls at the floor levels by reinforced concrete beams called coupling beams (CBs). These systems have good lateral sti...