Seismic Behaviour of Cast‐In‐Situ Phosphogypsum‐Reinforced Concrete Grid Frame Composite Walls

Wu, Qin; Zhang, Huagang; Chen, Hongniao; Xin, Zhang; Wei, Yanhui; Li, Li; Ma, Kejian

doi:10.1155/2019/1529137

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…The results indicated that the bearing capacity of the composite wall was increased by 134.4% due to the phosphogypsum infill, and the hysteresis and energy dissipation capabilities were higher than CGF. Lu et al 8 obtained a similar conclusion to Wu et al 14 through the horizontal load cycle tests on composite walls. Nevertheless, references 8,14 mainly focused on the mechanical properties of composite wall, ignoring the synergism between CGF and filled wall.…”

Section: Introductionsupporting

confidence: 60%

“…Lu et al 8 obtained a similar conclusion to Wu et al 14 through the horizontal load cycle tests on composite walls. Nevertheless, references 8,14 mainly focused on the mechanical properties of composite wall, ignoring the synergism between CGF and filled wall. Therefore, the interaction between CGF and filling wall needed further study.…”

Section: Introductionsupporting

confidence: 60%

“…The CGF was a frame structure composed of dense columns and beams, 8 whose mechanical properties were between the traditional frame structure and the shear wall structure 9,10 . The CGF could be used as the supporting system of large‐span cassette structures 11,12 and had been applied in high‐rise residential buildings and office buildings, 13,14 as shown in Figure 1. The CFC was a foamed concrete that used ceramsite as coarse aggregate 15 ; as a green building resource, it had low density, large internal porosity, and good mechanical properties 16 ; it could make the structure have better earthquake resistance, fire resistance, heat preservation and sound insulation 17,18 .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the mechanical properties of CGF with filled wall had also been reported in references. Wu et al 14 used phosphogypsum as infill to study the seismic performances of CGF with infilled wall. The results indicated that the bearing capacity of the composite wall was increased by 134.4% due to the phosphogypsum infill, and the hysteresis and energy dissipation capabilities were higher than CGF.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical investigations on interaction between reinforced‐concrete grid frame and ceramsite foam concrete infill

Chen

2023

Structural Concrete

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Experimental and numerical studies were conducted to investigate interaction between reinforced‐concrete grid frame (CGF) and ceramsite foam concrete (CFC) infill. In the experiments, compressive tests were performed on the CGF and RC grid frame filled with the CFC which forms a composite wall, namely CGFW. To investigate the mechanical properties of the CGFW and the interactions between the CGF and CFC infill, the failure modes, integral stiffness, local strains, and load distribution coefficients of the composite wall were analyzed. The experimental results indicated that the CFC infill could uniformly transmit loads and significantly improve the bearing capacity and vertical stiffness of the CGFW while reducing the ductility of the composite wall. The load distribution coefficients of the CFC infill were stable at 0.51 ± 0.06 before peak load and damage evolutions in concrete columns were effectively alleviated due to obvious interactions between the CGF and CFC infill. To evaluate the interaction mechanisms of the two, numerical analysis was carried out by changing the sizes of central grid, opening rates, and reinforcement ratios of the composite walls. The finite element model with plastic damage constitutive of concrete was calibrated by comparing the experimental results. The numerical results indicated that the interaction between the CGF and CFC infill was insensitive to changes in grid sizes, and the interaction between the two was significantly different with the same reinforcement method of frame beams and columns. In addition, the CFC infill played an important role in the stability of CGF as the opening rate significantly affected the mechanical properties of the CGFW, and a stable path of load transfer was the key factor to ensure the interaction between the CGF and CFC infill.

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Section: Introductionsupporting

confidence: 60%

Section: Introductionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical investigations on interaction between reinforced‐concrete grid frame and ceramsite foam concrete infill

Chen

2023

Structural Concrete

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Experimental Investigation on Stress-Strain Curve of Phosphogypsum Under Uniaxial Compression

Zhou

Yin

et al. 2022

Lecture Notes in Civil Engineering

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Stress-Strain Relationships of Fiber Reinforced Phosphogypsum under Uniaxial Compression

Zhou

Chen

Yong

2022

Advances in Materials Science and Engineering

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To investigate the stress-strain relationship of fiber reinforced phosphogypsum (PG) under uniaxial compression, a total of twenty-seven PG prism specimens were fabricated and tested. The influences of the content of admixture, content of fiber, and water-solid ratio on the stress-strain curve of the specimens were investigated. Three kinds of failure modes were summarized by observing the experimental phenomena; they were called “compaction failure,” “tension failure,” and “mixed stress failure,” respectively. Through in-depth analysis of the test data, it was found that decreasing the water-solid ratio can lead to increasing the peak stress and secant modulus of specimens; increasing the fiber content can lead to improving the mechanical property of PG mixture specimens. However, adjusting the contents of the cement and quicklime has no significant effect on the mechanical property of specimens. In addition, according to the test data and the characteristics of stress-strain curves, the stress-strain curve of PG specimens was divided into four parts, and a mathematical model was developed to predict the stress-strain curve of PG specimens. The validations of the model showed that the curves calculated by the proposed model were well in agreement with the test data of this study and previous studies.

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Seismic Behaviour of Cast‐In‐Situ Phosphogypsum‐Reinforced Concrete Grid Frame Composite Walls

Cited by 3 publications

References 8 publications

Experimental and numerical investigations on interaction between reinforced‐concrete grid frame and ceramsite foam concrete infill

Experimental and numerical investigations on interaction between reinforced‐concrete grid frame and ceramsite foam concrete infill

Experimental Investigation on Stress-Strain Curve of Phosphogypsum Under Uniaxial Compression

Stress-Strain Relationships of Fiber Reinforced Phosphogypsum under Uniaxial Compression

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