Evaluation of seismic performance of precast concrete walls with X-shaped steel plate bracings

Liu, Zelong; Wang, Mengfu; Hogan, Lucas

doi:10.1016/j.istruc.2023.01.055

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…However, UHSB did not yield during loading, indicating that concealed bracings generated negligible plastic deformation, which was beneficial for resilient performance. The concealed bracings at the indicated position primarily exhibited tensile deformation, and similar phenomena can be observed in (Liu et al 2023). The strains of concealed bracings in mid-rise walls developed faster, because of the larger shear distortion in mid-rise walls.…”

Section: Concealed Bracing Strain Distributionsupporting

confidence: 64%

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Enhancing Seismic and Resilient Performance of Resilient Walls with Concealed Bracings: Experimental and Numerical Investigation

Zhang,

Sun

et al. 2024

Preprint

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Resilient walls incorporating ultra-high-strength bars (UHSB) with weak bond performance are expected to exhibit drift-hardening properties. Thus, to improve the shear stiffness and lateral resistance of the resilient walls, the present research applied the concealed bracings composed of UHSB to the resilient walls and explored the effect on the hysteretic and resilient performance of the proposed walls. Five walls were tested to investigate the effect of relevant variables, including shear span ratio, the presence of steel fibers and recycled aggregate concrete (RAC) strength, on the hysteretic performance and resilience. Reinforced with bracings, test wall showed satisfactory hysteretic and resilient performance up to 2% drift ratio and maintained stable increase in lateral force. Concealed bracings consisted of UHSB were also conducive to reducing residual drift ratio, ranging from 8.7–31.3%. Residual drift ratios of all test walls were within the limit value of 0.5%, until a loading drift ratio of 2%. Additionally, adding steel fibers restricted the development of cracks and had a positive effect on slowing down stiffness degradation. Numerical models were established based on OpenSees platform, and more resilient-related parameters were analyzed, including reinforcement ratio and arrangement height of the concealed bracing ratio, longitudinal reinforcement ratio, axial ratio, and UHSB replacement ratio. Based on the parameter analysis results, design recommendations were given.

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Section: Concealed Bracing Strain Distributionsupporting

confidence: 64%

“…The arrangement height of the concealed bracing is also an area of interest in this study. Previous research has shown that the arrangement angle of the concealed bracing significantly affects seismic performance (Liu et al 2023).…”

Section: Bracing Reinforcement Ratiomentioning

confidence: 99%

Enhancing Seismic and Resilient Performance of Resilient Walls with Concealed Bracings: Experimental and Numerical Investigation

Zhang,

Sun

et al. 2024

Preprint

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show abstract

“…Driven by the concept of carbon peaking and carbon neutrality goals, the proposal and application of assembled concrete composite structure systems further highlight the advantages of green, energy-saving and low-carbon industrialized building [10][11][12]. In recent years, innovative precast concrete composite structures such as precast concrete sandwich structures [13][14][15], steel-concrete composite structural walls with internal bracings [16], ceramsite concrete hollow block infilling wall structures [17], polystyrene plate sandwich concrete infilling structures [17][18][19][20], and precast concrete wall with X-shaped steel plate bracings [21] have flourished. The above precast concrete composite structures are all assembled by precast concrete components through horizontal joints and vertical joints [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Low-Cyclic Reversed Loading Tests on Full-Scale Precast Concrete Composite Wall Connected by Tooth Groove and Grouted Sleeve

Luo,

Chen,

Deng

et al. 2024

Materials

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In this paper, a novel precast concrete composite wall connected by tooth groove and grouted sleeve was introduced, which is produced in factories by means of structure-insulation integrated prefabrication, and the prefabrication and assembly process were presented minutely. To verify the feasibility and reliability of this novel tooth groove and grouted sleeve connection method and explore the joint connection performance and the seismic performance of the precast concrete composite wall connected by tooth groove and grouted sleeve, low-cyclic reversed loading tests with an axial compressive ratio of 0.1 were performed on two full-scale precast concrete composite walls. Moreover, the failure mode, hysteretic curve, skeleton curve, stiffness degradation, displacement ductility, energy dissipation capacity, and reinforcement strain were comprehensively discussed. The research results showed that under the vertical axial load and low-cyclic reversed load, the distributed reinforcements in the wall panel only played a structural role, while the connecting reinforcements at horizontal joints can always effectively transfer stress without bond failure, and the tooth groove and grouted sleeve connection performance was reliable. In addition, the hysteretic curves of the precast concrete composite wall connected by tooth groove and grouted sleeve were full, showing good ductile deformation capacity and energy dissipation capacity. In general, the precast concrete composite wall connected by tooth groove and grouted sleeve not only possessed favorable seismic performance but also showed obvious advantages such as green energy saving, high assembly rate, and less on-site wet operation, which can be applied to practical engineering under reasonable design.

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Seismic performance of innovative precast concrete composite walls with embedded XPS insulation layer

Chen,

Luo,

Luo

et al. 2024

Engineering Structures

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Evaluation of seismic performance of precast concrete walls with X-shaped steel plate bracings

Cited by 6 publications

References 18 publications

Enhancing Seismic and Resilient Performance of Resilient Walls with Concealed Bracings: Experimental and Numerical Investigation

Enhancing Seismic and Resilient Performance of Resilient Walls with Concealed Bracings: Experimental and Numerical Investigation

Low-Cyclic Reversed Loading Tests on Full-Scale Precast Concrete Composite Wall Connected by Tooth Groove and Grouted Sleeve

Seismic performance of innovative precast concrete composite walls with embedded XPS insulation layer

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