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Vertical geometric irregularity in stepped building frames
Abstract‘Stepped building’ frames, with vertical geometric irregularity, are now increasingly encountered in modern urban construction. This paper proposes a new method of quantifying irregularity in such building frames, accounting for dynamic characteristics (mass and stiffness). The proposed ‘regularity index’ provides a basis for assessing the degree of irregularities in a stepped building frame. This paper also proposes a modification of the code specified empirical formula for estimating fundamental period for regular frames, to estimate the fundamental time period of the stepped building frame. The proposed equation for fundamental time periods is expressed as a function of the regularity index. It has been validated for various types of stepped irregular frames.
Vertical geometric irregularity in stepped building frames
Abstract‘Stepped building’ frames, with vertical geometric irregularity, are now increasingly encountered in modern urban construction. This paper proposes a new method of quantifying irregularity in such building frames, accounting for dynamic characteristics (mass and stiffness). The proposed ‘regularity index’ provides a basis for assessing the degree of irregularities in a stepped building frame. This paper also proposes a modification of the code specified empirical formula for estimating fundamental period for regular frames, to estimate the fundamental time period of the stepped building frame. The proposed equation for fundamental time periods is expressed as a function of the regularity index. It has been validated for various types of stepped irregular frames.
Vertical geometric irregularity in stepped building frames
Sarkar, Pradip (author) / Prasad, A. Meher (author) / Menon, Devdas (author)
Engineering Structures ; 32 ; 2175-2182
2010-03-15
8 pages
Article (Journal)
Electronic Resource
English
Vertical geometric irregularity in stepped building frames
| Online Contents | 2010
Effect of Vertical-Stepped Geometric Irregularity on the Seismic Performance of Buildings
| Springer Verlag | 2022