Shaking table test on insulated sandwich concrete wall building structure

Qiao, Wentao; Kang, Jialing; Dong, Wei; Yuan, Jiawei; Wang, Zexiong

doi:10.1016/j.jobe.2021.102165

Cited by 9 publications

(7 citation statements)

References 16 publications

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“…When subjected to a rare earthquake with a seismic intensity of degree 9 (PGA = 0.62 g), K is reduced to 1.79 on the top story, decreasing by about 38.3%, indicating that some lateral force-resisting members of the star-type grid concrete wall structure have already been damaged. The results coincided well with the theory and shaking table test performed by Li et al (2019) [ 30 ] for an RC shear wall structure and Qiao et al (2021) [ 31 ] for an insulated sandwich concrete wall building structure.…”

Section: Seismic Response Of the Star-type Grid Concrete Wall Structuresupporting

confidence: 89%

“…This suggests that the structural components are slightly damaged, particularly in the first story. The simulated result is consistent with the deformation response of concrete wall structure presented in the shaking table test (He et al 2018; Qiao et al 2021) [ 31 , 34 ]: The inter-story drift angle of the first floor is always the largest, and the stiffness of the first floor needs to be improved. It can be concluded that the degradation of the structural seismic performance level is relatively slow and the star-type grid concrete wall structure has satisfactory stiffness and ductility.…”

Section: Seismic Response Of the Star-type Grid Concrete Wall Structuresupporting

confidence: 82%

“…Figure 12 displays each story’s maximum inter-story drift angle θ max under different ground motions input. Table 1 lists the seismic performance level of shear wall structures, according to the Chinese code (GB50010-2011) [ 33 ] and recent studies (Jiang et al 2021; Qiao et al 2021) [ 16 , 31 ]. As seen in Figure 11 and Table 1 , the inter-story drift angle increases initially and later decreases with the structural height, and the maximum inter-story drift angle presents at the first story.…”

Section: Seismic Response Of the Star-type Grid Concrete Wall Structurementioning

confidence: 99%

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Seismic Response of Star-Type Grid Concrete Wall Structure by Numerical Modeling

et al. 2022

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Cement polystyrene shell mold (CPSM) grid concrete walls have been widely applied in the construction of low and mid-rise buildings with higher load-bearing and insulation properties. A star-type grid concrete wall was constructed based on the infill wall simplified to an equivalent diagonal bracing model. To investigate the seismic responses and behavior of a star-type grid concrete wall structure, an overall time-history numerical simulation was carried out in this paper. Typical results, including acceleration, deformation, hysteresis curve and failure pattern of this novel construction system, were interpreted. Results indicate that the star-type grid concrete wall structure has satisfactory seismic performance, including energy dissipation capacity. The structure has higher lateral stiffness and can work in an elastic state under major earthquakes. Accordingly, it is more sensitive to near-fault ground motion with higher frequency components. Meanwhile, the structural inter-story drift angle is less than the limit value of lighter damage when subjected to a super-major earthquake, and the structure presents shear deformation. The openings significantly affect the failure mode, the star-type grid concrete wall with a window (a small aspect ratio less than 1.11) conforms to shear failure, and the wall with a door (aspect ratio of 2.5) conforms to bending-shear failure. The diagonal bracing can distribute the stress in the wall, especially the concrete lattice beam, and effectively resist the lateral forces via the concrete lattice column, improving the ductility and integrity of the structural system.

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Section: Seismic Response Of the Star-type Grid Concrete Wall Structuresupporting

confidence: 89%

Section: Seismic Response Of the Star-type Grid Concrete Wall Structuresupporting

confidence: 82%

Section: Seismic Response Of the Star-type Grid Concrete Wall Structurementioning

confidence: 99%

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Seismic Response of Star-Type Grid Concrete Wall Structure by Numerical Modeling

et al. 2022

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“…Based on the frequency distributions of the artificial (0.62 g) and El-Centro waves (0.80 g) transferred from the acceleration time histories by fast Fourier transform [38] (see Fig. 17), the frequency distribution of the artificial wave was relatively more intensive within the duration [39] compared with the El-Centro wave. Compared with FEM Ⅱ, the maximum interstory drifts of FEM Ⅱ-B increased by 6.19% and 6.27% between the foundation and 1st story floor, corresponding to relative lateral displacements of the 1st floor of 1.373 mm and 1.219 mm in the x-and ydirections, respectively.…”

Section: Column-to-column Connectionmentioning

confidence: 99%

Design parameter study based on nonlinear analysis of a bolt-connected precast concrete composite wall panel structure

Wang

Liu

Xiong

et al. 2023

Preprint

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This paper presented an innovative numerical modelling method for bolt-connected precast wall panels, and a three-dimensional finite element (FE) model based on a full-scale two-story bolt-connected precast concrete composite wall panel structure tested on a shake table was proposed for nonlinear dynamic analysis. The wall panels were schematized with multilayer shell elements, whereas all bolted joints were described with 3-DoF nonlinear springs. The mean error rates between the numerical and experimental results of translational periods, maximum lateral displacements, and maximum accelerations were 13.10%, 10.71%, and 8.31%, respectively, showing that the proposed FE model possessed the ability to capture global and local responses. Parametric studies were conducted based on the verified FE model to evaluate the effects of the design parameters, such as the column-to-column connection, size of window openings, and number of stories, on the seismic performance of the bolt-connected precast wall panels. In addition, a three-story structure with a window-to-wall ratio of 0.50 without connections between columns was modelled and loaded by high-intensity seismic excitation, which meets the plastic story drift limit of θu = 1/120 and shows good safety margins against earthquakes.

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“…The results show that ISCW-EC has higher shear strength and higher ductility than those of the traditional ISCW. Qiao et al (2021) conducted a shaking table test on a 1:3 scaled 3-story ISCW building structure. The results show that the ISCW structure has high stiffness and it exhibits elastic behavior under a small earthquake.…”

Section: Introductionmentioning

confidence: 99%

Study on axial compression bearing capacity of in-sulated sandwich concrete wall with embedded columns

Qiao

Tian

Yuan

et al. 2022

Advances in Structural Engineering

Self Cite

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An insulated sandwich concrete wall with embedded columns (ISCW-EC) is proposed by introducing horizontal reinforcements and cold formed steel embedded columns to the traditional insulated sandwich concrete wall. Axial compression load tests were performed on two full-scale specimens with different horizontal reinforcement spacings to investigate the failure mode of ISCW-EC. The failure patterns of both specimens are the same: splitting cracks present at the bottom of specimen and local buckling occurs at the bottom of the embedded column. The test results show that the specimen with smaller horizontal reinforcement spacing has smaller cracking load, lower secant stiffness, lower ductility and higher compression bearing capacity. Based on the test results, refined finite element models were established to perform a multi-parameter analysis in which the influences of horizontal reinforcement spacing, embedded column spacing, concrete strength and steel wire diameter are studied. The multi-parameter analysis results show that the increase of concrete strength and wire diameter improve the axial compression bearing capacity while the increase of the horizontal reinforcement spacing and embedded column spacing reduce it. Finally, the calculation formula of axial compression capacity of ISCW-EC is put forward based on both test and finite element analysis results.

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Shaking table test on insulated sandwich concrete wall building structure

Cited by 9 publications

References 16 publications

Seismic Response of Star-Type Grid Concrete Wall Structure by Numerical Modeling

Seismic Response of Star-Type Grid Concrete Wall Structure by Numerical Modeling

Design parameter study based on nonlinear analysis of a bolt-connected precast concrete composite wall panel structure

Study on axial compression bearing capacity of in-sulated sandwich concrete wall with embedded columns

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