Seismic performance assessment of reinforced concrete frames with different bracing systems

Ahiwale, Dhiraj D.; Kontoni, Denise‐Penelope N.; Darekar, Prachi L.

doi:10.1007/s41062-023-01071-3

Cited by 12 publications

(6 citation statements)

References 27 publications

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“…As is observed from Table 9, the addition of steel bracing can reduce displacement with a maximum displacement reduction of 59.66% in the inverted V brace and 58.22% in V brace shape. This is similar to research conducted in Bangladesh, where unbrace structures had higher displacement than cross-brace and eccentrically brace structures [27]. On the other hand, the displacement value in this research is lower than the single diagonal brace, with a maximum displacement reduction value of 68.43% [28].…”

Section: B Story Drift Resultssupporting

confidence: 88%

The Performance Assessment of the Structural Bracing Model for Multi-Story Building

Anastasia,

Saputro,

Goro

et al. 2024

Int. J. Adv. Sci. Eng. Inf. Technol.

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Earthquakes are a severe issue for construction. The building collapsed due to the earthquake because it could not bear the earthquake load. Even more so, it was constructed using outdated and different building regulations that do not comply with modern building codes that account for seismic loads. As a result, disaster mitigation methods, such as retrofitting, must be implemented. Retrofitting procedures are commonly used in many developed countries. The bracing system is a typical retrofitting method used on building structures. In this study, a retrofitting program was carried out on The State Finance Building II Semarang, which was built in the 1980s, one of the old buildings in Semarang City, using a reinforced portal structure. This study's bracing system is a Concentrically Brace Frame (CBF) with Inverted V Brace and V Brace variations. The structural analysis software ETABS V.18.2.0 analyzes the building's structure. The structural review includes story drift, the P-Delta effect, and horizontal torsion irregularities. According to the results, steel bracing can minimize the period and displacement associated with story drift, making the structure more stable, with a maximum displacement reduction of 59.66% for inverted V-type steel bracing. Aside from that, steel bracing also can minimize the occurrence of torsion in the building. As a result, steel braces can be used to strengthen the structure.

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Section: B Story Drift Resultssupporting

confidence: 88%

The Performance Assessment of the Structural Bracing Model for Multi-Story Building

Anastasia,

Saputro,

Goro

et al. 2024

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…The SAP2000 software is used to model and evaluate ten-storey RC-frame structures with first-storey heights of 3.5, 4, and 4.5 m. Pushover and nonlinear time-history analyses were carried out. Steel braces also contributed to reducing the global damage index (GDI) significantly [22].…”

Section: Shukla and K (2022)mentioning

confidence: 99%

Seismic Performance of Reinforced Concrete Buildings with Different Lateral Load

Lamsal

2023

IJSREM

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Shear wall, steel bracing and combined system are the most commonly used lateral-load resisting technique for high-rise buildings. Shear walls have very high in-plane strength and stiffness, which can be used simultaneously for resisting large horizontal and gravity loads. The aim of this study is to examine how well reinforced concrete buildings withstand seismic activity using various systems for resisting lateral loads. In this study, a reinforced concrete building with 12 floors (G+12) and 5 X 5 bays is selected, and various lateral load resisting frame systems are applied in different positions. These are shear wall, bracings, shear wall-bracings combinations (Combined) at five different locations/patterns i.e., at outer corners (Type- I), center of outer sides (Type- II), middle corners (Type- III), center of middle sides (Type- IV), and inner core and middle sides (Type- V) respectively. A total of sixteen models are created for this study, with one being a bare frame and the other fifteen consisting of three types of lateral load resisting systems arranged in five different configurations each. With the assistance of ETABS all models are analyzed by Equivalent Static Analysis and Response Spectrum Analysis. The performance of building is evaluated on the basis of following parameters- maximum storey displacement, maximum storey drift and storey shear. At last the results are compared for different models. Among the three systems, the shear wall system exhibits the least displacement and the highest stiffness. Response of combined system is better than that of bracing system. Overall, the Type II shear wall model is more earthquake-resistant and structurally efficient than the other fifteen models. Key Words: Equivalent Static Analysis, Response Spectrum Analysis, Maximum storey displacement, Maximum storey drift, Storey shear

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“…In addition, the bracing elements were found to be quite successful in reducing drifts, as seen by the reduction of inter-storey drifts compared to unbraced frames. Steel braces also contributed to reducing the global damage index (GDI) significantly [22].…”

Section: Shukla and K (2022)mentioning

confidence: 99%

Study of Torsional and Stiffness Properties of the RC Buildings with Shear wall and Steel Bracing with Lateral Loadings

2023

IJFMR

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The equivalent static analysis and response spectrum analysis were performed for sixteen different models with different positioning of lateral load resisting systems in building. For the development of seismic response curve of the represented model is presented in tabular form and graphically shown in figure. Seismic response curve has been generated according to the response spectra curve of IS 1893:2016. The following parameters are compared between Equivalent Static Method and Response Spectrum Method with different positions of shear wall, braces and combined system in each model.

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Seismic performance assessment of reinforced concrete frames with different bracing systems

Cited by 12 publications

References 27 publications

The Performance Assessment of the Structural Bracing Model for Multi-Story Building

The Performance Assessment of the Structural Bracing Model for Multi-Story Building

Seismic Performance of Reinforced Concrete Buildings with Different Lateral Load

Study of Torsional and Stiffness Properties of the RC Buildings with Shear wall and Steel Bracing with Lateral Loadings

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