Author(s)

Ying Li ¹, Min Zhang ¹

Affiliation(s)

¹ Department of Urban Construction, Yangtze University, Jingzhou, Hubei, China

Corresponding Author

Ying Li

ABSTRACT

In order to study the influence of the irregularity of the step-terrace structure on the seismic performance of the structure, according to the difference between the internal force distribution of the step-terrace structure and the regular structure, this paper puts forward a new irregular index according to the difference between the lateral stiffness distribution of the step-terrace structure and the regular structure through the internal force analysis of the step-terrace structure. The nonlinear analysis of 12 step-terrace structures under rare earthquakes is carried out, and the relationship between the maximum inter-story displacement angle and the irregular index under rare earthquakes is analyzed. The results show that the irregularity of the structure increases with the increase of the number of spans and layers of the structure, and the influence of the number of spans on the irregularity of the structure is greater than that of the number of layers. With the increase of the irregular index of the structure, the seismic performance of the structure is worse.

KEYWORDS

Step-terrace frame structure, Lateral stiffness, Irregular indicators

CITE THIS PAPER

Ying Li, Min Zhang, Irregular index of mountain step-terrace frame structure. Journal of Civil Engineering and Urban Planning (2024) Vol. 6: 122-132. DOI: http://dx.doi.org/10.23977/jceup.2024.060315.

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