Evaluation of Steel Diagrid Structural System Under Near-Fault Earthquakes

The diagrid structural system has become popular in the construction of high-rise buildings in light of significant advantages over other structural systems. The present study explores the effects of the vertical near-fault earthquake component on the axial forces of diagonal elements in steel diagr...

Full description

Saved in:
Bibliographic Details
Published in:Journal of earthquake engineering : JEE 2024-06, Vol.28 (8), p.2330-2360
Main Authors: Saadati, Davood, Javadi, Pasha, Moghadam, A. S., Hosseini, Mir Hamid
Format: Article
Language:English
Subjects:
Axial forces
Diagrid structures
Earthquakes
High rise buildings
near-fault ground motion
nonlinear dynamic analysis
Seismic activity
Steel
Steel structures
Structures
tall buildings
Three dimensional models
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The diagrid structural system has become popular in the construction of high-rise buildings in light of significant advantages over other structural systems. The present study explores the effects of the vertical near-fault earthquake component on the axial forces of diagonal elements in steel diagrid structures. Nonlinear time-history analysis was carried out using 11 near-fault earthquake records. A total of nine three-dimensional models of 12, 18, and 24 stories, each with diagonal angles of 45, 63.4, and 71.5 degrees, were designed and analyzed. Due to the three-dimensional modeling complexities of diagrid structures, a method was developed to transform three-dimensional models into two-dimensional ones. Finally, the scenarios with and without the vertical earthquake component were compared. It was found that the incorporation of the vertical earthquake component into the analysis of diagrid structures substantially influenced the axial forces of diagonal elements. This can affect the design load estimation of diagonal elements as the main components of a diagrid structure.
ISSN:1363-2469
1559-808X
DOI:10.1080/13632469.2023.2290105