Application of Evolutionary Techniques to Minimize Torsion for Plan Irregular Re-entrant Corner Buildings

Abdul Hafeez Mohammed; M. Anjaneya Prasad; Dakshina Murthy N.r.

Makale detayları

Application of Evolutionary Techniques to Minimize Torsion for Plan Irregular Re-entrant Corner Buildings

Yazarlar:

Abdul Hafeez Mohammed | M. Anjaneya Prasad | Dakshina Murthy N.r.

Yayıncı:

Murat YAKAR

Ana Başlıklar:

Numerical Modelization in Civil Engineering | Structural Engineering

Dergi:

Turkish Journal of Engineering Vol.9 Issue 2, pp.272-280

Belge Tipi:

Makale

Yayın Tarihi:

6/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001339343

pISSN:

2587-1366

Anahtar kelimeler:

Özet:

 Irregular structures are accounting significant presence due to varied occupational and aesthetic demands, specifically in urban infrastructure. Majority of such buildings are irregular to some extent due to the presence of asymmetry in plan, elevation, irregular vertical member distribution or floor mass distribution or combinations of these reasons. Perfectly regular buildings are an idealized concept, and in actuality, this requirement is rarely met. The effect of seismic action is due the presence of structural irregularity in buildings causes substantial displacement amplifications and stress concentrations in the members, resulting in severe damage and ultimately early collapse. According to IS-1893:2016, a building is torsionally irregular if the maximum horizontal displacement at any floor in the direction of lateral force exceeds 1.5 times the minimum horizontal displacement at the far end. Torsional irregularity, also known as in-plan irregularity, occurs when the lines of action of centers of mass and stiffness on a common vertical axis at each floor level do not coincide. During earthquakes or other lateral loads, inertia forces act through the center of mass, while resistive forces act through the center of stiffness or resistance. The relative location of a buildings center of mass, strength, and stiffness influences the torsional forces operating on it. These centers of significance must be strategically placed to minimize torsional impacts on structures and provide an efficient building structure. In this paper, the impacts of Static eccentricity with regard to the buildings center of mass are examined, and a non-linear dynamic analysis is performed to investigate the variation in torsional irregularity ratio and other torsional parameters. Genetic Algorithm has been adopted to minimize Static eccentricity and arrange lateral force resisting elements to achieve the lowest torsional irregularity ratio. The developed model was found to be quite productive and the torsional irregularity ratio has reduced successfully.

 Irregular structures are accounting significant presence due to varied occupational and aesthetic demands, specifically in urban infrastructure. Majority of such buildings are irregular to some extent due to the presence of asymmetry in plan, elevation, irregular vertical member distribution or floor mass distribution or combinations of these reasons. Perfectly regular buildings are an idealized concept, and in actuality, this requirement is rarely met. The effect of seismic action is due the presence of structural irregularity in buildings causes substantial displacement amplifications and stress concentrations in the members, resulting in severe damage and ultimately early collapse. According to IS-1893:2016, a building is torsionally irregular if the maximum horizontal displacement at any floor in the direction of lateral force exceeds 1.5 times the minimum horizontal displacement at the far end. Torsional irregularity, also known as in-plan irregularity, occurs when the lines of action of centers of mass and stiffness on a common vertical axis at each floor level do not coincide. During earthquakes or other lateral loads, inertia forces act through the center of mass, while resistive forces act through the center of stiffness or resistance. The relative location of a buildings center of mass, strength, and stiffness influences the torsional forces operating on it. These centers of significance must be strategically placed to minimize torsional impacts on structures and provide an efficient building structure. In this paper, the impacts of Static eccentricity with regard to the buildings center of mass are examined, and a non-linear dynamic analysis is performed to investigate the variation in torsional irregularity ratio and other torsional parameters. Genetic Algorithm has been adopted to minimize Static eccentricity and arrange lateral force resisting elements to achieve the lowest torsional irregularity ratio. The developed model was found to be quite productive and the torsional irregularity ratio has reduced successfully.

 Irregular structures are accounting significant presence due to varied occupational and aesthetic demands, specifically in urban infrastructure. Majority of such buildings are irregular to some extent due to the presence of asymmetry in plan, elevation, irregular vertical member distribution or floor mass distribution or combinations of these reasons. Perfectly regular buildings are an idealized concept, and in actuality, this requirement is rarely met. The effect of seismic action is due the presence of structural irregularity in buildings causes substantial displacement amplifications and stress concentrations in the members, resulting in severe damage and ultimately early collapse. According to IS-1893:2016, a building is torsionally irregular if the maximum horizontal displacement at any floor in the direction of lateral force exceeds 1.5 times the minimum horizontal displacement at the far end. Torsional irregularity, also known as in-plan irregularity, occurs when the lines of action of centers of mass and stiffness on a common vertical axis at each floor level do not coincide. During earthquakes or other lateral loads, inertia forces act through the center of mass, while resistive forces act through the center of stiffness or resistance. The relative location of a buildings center of mass, strength, and stiffness influences the torsional forces operating on it. These centers of significance must be strategically placed to minimize torsional impacts on structures and provide an efficient building structure. In this paper, the impacts of Static eccentricity with regard to the buildings center of mass are examined, and a non-linear dynamic analysis is performed to investigate the variation in torsional irregularity ratio and other torsional parameters. Genetic Algorithm has been adopted to minimize Static eccentricity and arrange lateral force resisting elements to achieve the lowest torsional irregularity ratio. The developed model was found to be quite productive and the torsional irregularity ratio has reduced successfully.

 Irregular structures are accounting significant presence due to varied occupational and aesthetic demands, specifically in urban infrastructure. Majority of such buildings are irregular to some extent due to the presence of asymmetry in plan, elevation, irregular vertical member distribution or floor mass distribution or combinations of these reasons. Perfectly regular buildings are an idealized concept, and in actuality, this requirement is rarely met. The effect of seismic action is due the presence of structural irregularity in buildings causes substantial displacement amplifications and stress concentrations in the members, resulting in severe damage and ultimately early collapse. According to IS-1893:2016, a building is torsionally irregular if the maximum horizontal displacement at any floor in the direction of lateral force exceeds 1.5 times the minimum horizontal displacement at the far end. Torsional irregularity, also known as in-plan irregularity, occurs when the lines of action of centers of mass and stiffness on a common vertical axis at each floor level do not coincide. During earthquakes or other lateral loads, inertia forces act through the center of mass, while resistive forces act through the center of stiffness or resistance. The relative location of a buildings center of mass, strength, and stiffness influences the torsional forces operating on it. These centers of significance must be strategically placed to minimize torsional impacts on structures and provide an efficient building structure. In this paper, the impacts of Static eccentricity with regard to the buildings center of mass are examined, and a non-linear dynamic analysis is performed to investigate the variation in torsional irregularity ratio and other torsional parameters. Genetic Algorithm has been adopted to minimize Static eccentricity and arrange lateral force resisting elements to achieve the lowest torsional irregularity ratio. The developed model was found to be quite productive and the torsional irregularity ratio has reduced successfully.

Makale detayları

Application of Evolutionary Techniques to Minimize Torsion for Plan Irregular Re-entrant Corner Buildings

Yazarlar:

Abdul Hafeez Mohammed | M. Anjaneya Prasad | Dakshina Murthy N.r.

Yayıncı:

Murat YAKAR

Ana Başlıklar:

Numerical Modelization in Civil Engineering | Structural Engineering

Dergi:

Turkish Journal of Engineering Vol.9 Issue 2, pp.272-280

Belge Tipi:

Makale

Yayın Tarihi:

6/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001339343

pISSN:

2587-1366

Asymmetric structure

Stiffness eccentricity

Non-linear Time History analysis

Genetic Algorithm

Torsional irregularity ratio

Sayı

Makale detayları

Application of Evolutionary Techniques to Minimize Torsion for Plan Irregular Re-entrant Corner Buildings

Yazarlar: Abdul Hafeez Mohammed | M. Anjaneya Prasad | Dakshina Murthy N.r.

Yayıncı: Murat YAKAR

Ana Başlıklar: Numerical Modelization in Civil Engineering | Structural Engineering

Dergi: Turkish Journal of Engineering Vol.9 Issue 2, pp.272-280

Belge Tipi: Makale

Yayın Tarihi: 6/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001339343

pISSN: 2587-1366

Asymmetric structure

Stiffness eccentricity

Non-linear Time History analysis

Genetic Algorithm

Torsional irregularity ratio

Sayı

Yazarlar:

Abdul Hafeez Mohammed | M. Anjaneya Prasad | Dakshina Murthy N.r.

Yayıncı:

Murat YAKAR

Ana Başlıklar:

Numerical Modelization in Civil Engineering | Structural Engineering

Dergi:

Turkish Journal of Engineering Vol.9 Issue 2, pp.272-280

Belge Tipi:

Makale

Yayın Tarihi:

6/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001339343

pISSN:

2587-1366