Behaviour of wall segments and floor slabs in precast reinforced concrete shear walls assembled using steel shear keys (SSKW)

Shen, Shifei; Pan, Peng; Qian, Miao; Li, Wenfeng; Gong, Ruzhi

doi:10.1002/stc.2418

Cited by 14 publications

(9 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, PC structures are increasingly popular in the infrastructure field. [1][2][3][4] However, the PC frame (PCF) structure is found to incur severe damage and even collapse due to failure of connection between the prefabricated beam and column members in earthquakes. [5][6][7][8] The beam-to-column connection can be considered as the weakest and the most vulnerable parts of the PCF structure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study on precast concrete moment‐resisting frame system with sector lead viscoelastic dampers

Deng

et al. 2021

Struct Control Health Monit

View full text Add to dashboard Cite

Connection failure between precast components greatly increases the risk of collapse of a precast concrete (PC) frame during earthquakes. In this study, a PC frame structure system with sector lead-viscoelastic damper (SLVD) is proposed, in which the SLVD not only protects the wet connection but also absorbs input energy in earthquakes. Two two-storey two-bay PC frame were constructed, one without SLVD (PC specimen) and the other with SLVDs (PS specimen). These PC frames were tested under cyclic loading and compared to an analogous monolithic frame (RC specimen). The differences in hysteretic curves, bearing capacity, strength and stiffness degradation, and energy dissipation capacity of the three specimens are compared in detail to investigate the impact of SLVD on the seismic performance of the PC frame. The experimental results show that the bearing capacity of the PS specimen in positive and negative loading directions increased by 42.53% and 31.26%, respectively, compared with the PC specimen. The ultimate deformation capacity and ductility of the PS specimen were better than those of the PC specimen. The seismic performance of the precast frame with SLVDs was similar to that of the monolithic reinforcement frame structure.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The PC structure application has maximized construction efficiency and minimized noise, resource wastage, and environmental pollution because the PC structure is directly assembled at the construction site from prefabricated components, they have. Therefore, PC structures are increasingly popular in the infrastructure field 1–4 …”

Section: Introductionmentioning

confidence: 99%

Experimental study on precast concrete moment‐resisting frame system with sector lead viscoelastic dampers

Deng

et al. 2021

Struct Control Health Monit

View full text Add to dashboard Cite

show abstract

“…The prefabricated wall segments can be directly transported from factories and assembled on the construction site. Diverse approaches for wall segments assembling have been proposed and studied in the recent decade, including but not limited to dry connectors, [5][6][7][8][9][10] unbonded posttensioned (UPT) strands, [11][12][13] grout-filled sleeves, 14,15 etc. Among them, dry connectors with welding or bolting configurations completely eliminate the process of concrete casting during assembly.…”

mentioning

confidence: 99%

“…Among them, dry connectors with welding or bolting configurations completely eliminate the process of concrete casting during assembly. Specifically, Shen et al 5,6 developed an innovative shear key which is welded onto the embedded steel panels of adjacent wall segments for load transfer. The shear keys exhibited satisfactory fatigue properties and energy dissipation capacity because of their optimized boundary shapes 7 ; Belleri et al 8,9 proposed a precast wall segment with reserved rectangular slots, where the main reinforcement of adjacent wall segments is fastened by high strength bolts and hooks.…”

mentioning

confidence: 99%

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

Shen

Pan

et al. 2021

Earthq Engng Struct Dyn

Self Cite

View full text Add to dashboard Cite

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

show abstract

“…Because of the key importance of the joint in precast structures, there are lots of investigations focusing on the seismic performance of precast shear wall joints and its design method in engineering practice. The reasonable design of bolts connections [19,20] and steel shear keys connections [21] can achieve the effect of improving the strength and stiffness of shear walls. Furthermore, the experimental results on various forms of precast shear walls also show that, under effective and reliable designs, precast shear walls can have same function in building structures like cast-in-situ ones to resist earthquake effects.…”

mentioning

confidence: 99%

Experimental study on seismic performance of precast hollow shear walls

Xin

Xiang-qian

Lü

et al. 2021

Structural Design Tall Build

View full text Add to dashboard Cite

This paper puts forward a new type of the precast hollow shear wall. Focusing on seismic performance, the low-frequency cyclic loading tests of five precast specimens and two cast-in-situ specimens in full size are conducted for comparison. The yielding and failure mechanism of specimens are analyzed and compared. The reliability of the vertical connection of precast hollow shear wall structure under the seismic effect is studied. The effects of axial compression ratio, single reinforcement connection in the central part, and confined stirrup for lapped reinforcements in boundary elements are also tested through experiments. The result shows that the failure mechanism of the precast specimen is basically same as the cast-in-situ specimen.The hysteretic curve of the precast specimen is plumper. And the energy dissipation capacity of precast specimen is superior to that of cast-in-situ specimen. In addition, the experimental data show that the buckled stirrup encryption for lapped steel in boundary elements will not increase the seismic performance of the proposed precast specimen. On the whole, the seismic performance of the proposed precast hollow shear wall can meet the safety requirements. Hence, it can be used in actual engineering project replacing cast-in-situ shear wall.

show abstract

Behaviour of wall segments and floor slabs in precast reinforced concrete shear walls assembled using steel shear keys (SSKW)

Cited by 14 publications

References 22 publications

Experimental study on precast concrete moment‐resisting frame system with sector lead viscoelastic dampers

Experimental study on precast concrete moment‐resisting frame system with sector lead viscoelastic dampers

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

Experimental study on seismic performance of precast hollow shear walls

Contact Info

Product

Resources

About