Development of prefabricated composite energy-dissipating slotted shear wall

Shen, Shifei; Cui, Yao; Pan, Peng; Ren, Jie

doi:10.1016/j.engstruct.2019.109577

Cited by 17 publications

(11 citation statements)

References 24 publications

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“…To overcome these problems, a dual system consisted of CDSW and prefabricated frame, termed as CDSW-frame system, was proposed. 16 As shown in Figure 1, the prefabricated frame, consisted of steel or composite beams, columns, and joints, is designed to resist horizontal and gravity loads. The CDSWs solely resist lateral loads, and they are postassembled and bolt-connected to the upper and lower beams of the frame.…”

Section: Confi̇gurati̇on Of a Cdswmentioning

confidence: 99%

“…Quasi-static test was conducted to quantify the seismic capacity of CDSW. 16 As shown in Figure 2A, the side CFTs function to resist overturning through tension and compression, and their width are determined according to the suggestions about boundary elements of composite shear walls, 2 that is, approximately 20% the overall width of CDSW. The middle CFT, about 3 times the wall thickness in width, is the main component to resist shearing.…”

Section: Quasi-static Testmentioning

confidence: 99%

“…test of CDSW, 16 and 12 cases were conducted to optimize the parameters of CDSWs. A new design method of a CDSW with highly accurate formulas was proposed based on a novel parameter termed as equivalent stiffness ratio (ESR).…”

Section: A C K N O W L E D G M E N T Smentioning

confidence: 99%

“…However, for both UPT strands and grout‐filled sleeves, large gap openings can always be observed at the interface between the mortar layer and the wall panels, 15 which creates weak spots in resisting overturning moment during an earthquake. Consequently, an innovative prefabricated slotted composite shear wall, termed as CDSW, 16 incorporates the ideas of “ductile walls,” “convenient construction,” “reliable joints,” and “high‐energy dissipation.” Featuring the vertical slots, CFT wall segments, soft steel connectors and bolted connections, a CDSW has significantly higher construction efficiency, ductility, and energy dissipation capacity than conventional structural walls. The seismic response of the CDSW were previously investigated by the authors through a quasi‐static cyclic load test 16 .…”

Section: Introductionmentioning

confidence: 99%

“…The seismic response of the CDSW were previously investigated by the authors through a quasi-static cyclic load test. 16 Based on the test result, a modified D-value method was proposed to predict the skeleton curve of slotted shear walls. However, the method was incomplete in function and limited in accuracy.…”

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confidence: 99%

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Parametric analysis and new design formulas of a prefabricated energy‐dissipating composite slotted shear wall

Shen

Pan

et al. 2021

Earthq Engng Struct Dyn

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In a conventional wall frame system, shear walls typically exhibit less deformation capacity under earthquakes than the frame. In this study, an innovative prefabricated slotted composite shear wall was proposed, abbreviated as CDSW.Featured with concrete-filled-tube (CFT) wall segments, I-shaped steel connectors, vertical slots and bolted connections with the frame, the CDSW has significantly improved deformation capacity, energy dissipation capacity and construction efficiency compared with conventional shear walls. Its seismic behaviors were investigated through applying quasi-static cyclic loads, where the specimen exhibited satisfactory cyclic response. Based on the test results, finite element analysis (FEA) models were established to validate the test results, and 12 parametric FEA cases were conducted to optimize the parameters of CDSWs. A new design method of a CDSW with highly accurate formulas was proposed based on a new parameter termed as equivalent stiffness ratio (ESR). With ESR, the stiffness and internal force of a CDSW can be obtained with satisfactory precision.Based on the analytical result and the new design formulas, it can be concluded that the ESR between 0.706 and 1.25 is recommended for practical engineering applications, which took into consideration the governing factors of yield and peak strength, stiffness, deformation capacity and energy dissipation. Additionally, the installation of the upper and lower sets of connectors at about 40% and 60% of the height of CDSW is suggested, respectively. K E Y W O R D Sdesign approach, equivalent stiffness ratio, FEM analysis, prefabricated structure, slotted shear wall INTRODUCTIONShear walls are commonly adopted to incorporate with frames in forming the wall-frame dual structural system to achieve seismic resilience. Considerable shear wall stiffness and strength can be achieved through carefully selected proportioning and detailing. However, due to the low aspect ratios, conventional shear walls often exhibit less deformation capacity than the frame during earthquakes in a typical dual system. Accordingly, "ductile walls" 1 are required to improve the "ductility" of the system. Ji et al 2 proposed a composite shear wall which consists of outer steel plates connected with tie

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Section: Confi̇gurati̇on Of a Cdswmentioning

confidence: 99%

Section: Quasi-static Testmentioning

confidence: 99%

Section: A C K N O W L E D G M E N T Smentioning

confidence: 99%