Seismic performance of precast shear walls prestressed via post-tensioned high strength bars placed inside grouted corrugated pipes

Zhi, Qing; Kang, Liqun; Jia, Lü; Xiong, Jingang; Zhang, Guo

doi:10.1016/j.engstruct.2021.112153

Cited by 17 publications

(5 citation statements)

References 22 publications

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“…Whereas, the storey drift conforms to the current high-rise building structure design code in China [12]. For the grouted sleeves connected prefabricated shear wall structure, typical earthquake damage is the loss of function of the coupling beams, the destruction of concrete at the foot of the compression side wall, and the yield of the reinforcement on the tension side or sliding out of the concrete in some cases [13][14][15][16].…”

Section: Introductionmentioning

confidence: 94%

Study on Optimization Design of Prefabricated ECC/RC Composite Coupled Shear Walls Based on Seismic Energy Dissipation Mechanism

Yang,

Sun,

Yao

et al. 2023

Preprint

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The prefabricated ECC/RC combined shear wall structure is an innovative prefabricated composite structure with better seismic performance by using ECC materials with better ductility in the main force and energy consumption regions of the prefabricated reinforced concrete (RC) shear wall structure. The key factors controlling the seismic energy dissipation capacity of this kind of structure are the use regions of ECC in composite coupling beams, use regions of ECC in shear walls, strength of ECC, stirrup ratio of coupling beams, strength of longitudinal reinforcement and so on. The parameters affecting seismic energy consumption are quantified by the finite element analysis method. By comparing and analyzing the load-displacement curves, hysteresis curves, energy dissipation capacity and stiffness degradation of the prefabricated ECC/RC combined shear wall structure specimen under these parameters, it is proposed that the best use regions of ECC is the cast-in-situ zone of the coupling beams with the scope of no more than400 mm at the shear walls’ bottom. The strength grade, the strength grade of longitudinal reinforcement, and the stirrup ratio of coupling beams are suggested design as E40, HRB400 and 0.5%, respectively.

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Section: Introductionmentioning

confidence: 94%

Study on Optimization Design of Prefabricated ECC/RC Composite Coupled Shear Walls Based on Seismic Energy Dissipation Mechanism

Yang,

Sun,

Yao

et al. 2023

Preprint

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“…The state-of-the-art concerning the use of CDS connections in PC shear walls is very limited at the moment. Previous studies have demonstrated that the use of CDS connections could be an effective solution for the PC members' connections [17,[19][20][21]. Further, it was demonstrated by Xue et al [17] that CDS connections can be an alternative to the conventional GSS connections in PC shear walls with a height of 2750 mm.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, PC columns with CDS connections exhibited higher ductility and lateral load capacity than those of the columns with GSS connections. Zhi et al [21] tested three PC shear walls with CDS connections and CIP shear wall. Metallic corrugated pipes were used for the CDS connection at the front and back of the PC shear walls, close to the vertical sides.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Behavior of Different Connections in Precast Concrete Shear Walls: Experimental and Analytical Investigations

Yooprasertchai

Wiwatrojanagul²,

Saingam

et al. 2023

Buildings

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This study investigated the grouted sleeve splices and corrugated duct splices between shear walls and footing. In this regard, three shear walls were experimentally tested. One wall was cast monolithically with the foundation (RCWS), whereas two walls were precast. One wall was connected to the foundation using splice sleeves (PGWS), and another with corrugated duct splices (PCWS). All the walls were tested under reverse cyclic loading and a constant axial load. It was observed that the performance of specimen PGWS was controlled by rocking, and a premature connection loss was observed at one of the grouted sleeve splices. The hysteretic performance of specimen PCWS was close to that of specimen RCWS, whereas extensive pinching was observed in the hysteretic response of specimen PGWS. The peak load, ductility, secant stiffness, and energy dissipation of specimens RCWS and PCWS were in good agreement, whereas the energy dissipated by specimen PGWS was considerably lower than the corresponding values of specimens RCWS and PCWS. Nonlinear fiber-based modeling in OpenSees was performed using SFI-MVLEM elements. The predicted hysteretic response of the OpenSees model was in close agreement with the experimental response.

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“…Qian et al [11] observed significant damage to coupling beams in a three-story assembled shear wall concrete structure connected by mortar sleeves, although the story drift conformed to China's high-rise building structure design code [12]. Typical earthquake damage in grouted sleeve-connected prefabricated shear wall structures includes loss of coupling beam function, concrete destruction at the compression side wall base, and reinforcement yielding or slipping out of the concrete [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Research on Optimization Design of Prefabricated ECC/RC Composite Coupled Shear Walls Based on Seismic Energy Dissipation

Yang,

Sun,

Yao

et al. 2024

Buildings

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This study explores an advanced prefabricated composite structure, namely ECC/RC composite shear walls with enhanced seismic performance. This performance enhancement is attributed to the strategic use of engineered cementitious composites (ECC) known for their superior ductility. The study conducts both experimental and numerical simulation analyses to scrutinize the seismic energy absorption capabilities of this innovative structure. Emphasis is placed on critical aspects, such as the optimal deployment areas for ECC within composite coupling beams and shear walls, the grade of ECC strength, the proportion of stirrups in coupling beams, and the caliber of longitudinal reinforcement. Through finite element analysis, this research quantitatively assesses the impact of these variables on seismic energy dissipation, incorporating evaluations of load–displacement hysteretic behaviors and the energy dissipation potential of ECC/RC shear wall samples. The findings suggest the optimal ECC application in the coupling beams, and within a 14% structural height at the base of shear walls. Recommended design parameters include an ECC strength grade of E40 (40 MPa), longitudinal reinforcement of HRB400 (400 MPa), and a stirrup ratio in coupling beams of 0.5%.

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Seismic performance of precast shear walls prestressed via post-tensioned high strength bars placed inside grouted corrugated pipes

Cited by 17 publications

References 22 publications

Study on Optimization Design of Prefabricated ECC/RC Composite Coupled Shear Walls Based on Seismic Energy Dissipation Mechanism

Study on Optimization Design of Prefabricated ECC/RC Composite Coupled Shear Walls Based on Seismic Energy Dissipation Mechanism

Cyclic Behavior of Different Connections in Precast Concrete Shear Walls: Experimental and Analytical Investigations

Research on Optimization Design of Prefabricated ECC/RC Composite Coupled Shear Walls Based on Seismic Energy Dissipation

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