Numerical investigation of a novel concrete-to-steel column splice in mixed structures in height

Bahri, Farshad; Bahri, Farzad; Moeini, Milad Ehteshami

doi:10.1016/j.istruc.2023.105526

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…Kaveh and Ardebili [11] investigated the design optimization of a mixed low-rise structure, compared to a similar r/c and a steel structure, subjected to dynamic loading. A numerical and experimental study of a "concrete-to-steel column splice" [12] was performed by Bahri et al [12] by using finite element 3D models with the typical fixed base assumption. Kiani et al [13] performed pushover analysis in 2D mixed frames to quantify and propose seismic performance factors considering far-field earthquake records.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

Askouni

2024

Infrastructures

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Following effective seismic codes, common buildings are considered to be made of the same material throughout the story distribution and based on an ideal rigid soil. However, in daily construction practice, there are often cases of buildings formed by a bottom part constructed with reinforced concrete (r/c) and a higher steel part, despite this construction type not being recognized by code assumptions. In addition, soil deformability, commonly referred to as the Soil–Structure Interaction (SSI), is widely found to affect the earthquake response of typical residence structures, apart from special structures, though it is not included in the normative design procedure. This work studies the seismic response of in-height mixed 3D models, considering the effect of sustaining deformable ground compared to the common rigid soil hypothesis, which has not been clarified so far in the literature. Two types of soft soil, as well as the rigid soil assumption, acting as a reference point, are considered, while two limit interconnections between the steel part on the concrete part are included in the group analysis. The possible influence of the seismic orientation angle is explored in the analysis set. Selected numerical results of the dynamic nonlinear analyses under strong near-fault ground excitations were plotted through dimensionless parameters to facilitate an objective comparative discussion. The effect of SSI on the nonlinear performance of three-dimensional mixed models is identified, which serves as the primary contribution of this work, making it unique among the numerous research works available globally and pointing to findings that are useful for the enhancement of the seismic rules regarding the design and analysis of code-neglected mixed buildings.

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Section: Introductionmentioning

confidence: 99%

The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

Askouni

2024

Infrastructures

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Damage Inspection and Seismic Assessment of Lingzhao Xuan in the Palace Museum: A Case Study

Huang,

Wang,

Zhang

et al. 2024

Buildings

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Lingzhao Xuan, located in the Palace Museum, has significant historical, artistic and scientific values. To investigate the safety status and seismic performance of the Lingzhao Xuan structure, the material composition and performance of the main load-bearing members of the Lingzhao Xuan were examined, and a finite element seismic simulation was performed on the model. The results show that under different seismic intensities, the deformation of the central pavilion is more evident than that of the four metal pavilions in the corner. Under the 8-degree frequent seismic intensities, the tensile stress in the local area of the masonry has exceeded the design tensile strength value of the masonry, posing a risk of structural cracking. Under the 8-degree rare seismic intensity, when the seismic waves are along the direction of the east–west engineering axis, the stress at the column foot of the central pavilion is greater than the tensile strength of the cast iron. When the seismic waves are along the direction of the south–north engineering axis, the stress of the tie beam in the north–south direction of the central pavilion exceeds the tensile strength of the cast iron. The structure has a greater risk of collapse due to excessive deformation.

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Numerical investigation of a novel concrete-to-steel column splice in mixed structures in height

Cited by 2 publications

References 25 publications

The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

The Influence of Soil Deformability on the Seismic Response of 3D Mixed R/C–Steel Buildings

Damage Inspection and Seismic Assessment of Lingzhao Xuan in the Palace Museum: A Case Study

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