Dynamic response of a reinforced concrete minaret

Abstract

Minarets are one of the specific structure types used commonly in Islamic Countries. Many minarets were damaged or collapsed during catastrophic events like earthquake. During an earthquake to understand the minarets' behavior are so important since dynamic response of these structures depends on a detailed understanding of their structural characteristics, such as geometrical shape, supporting system, mode shapes, natural frequencies and modal damping ratio etc. This paper examines in detail a Turkish style reinforced concrete (RC) minaret, its finite element modeling, modal analysis and earthquake analysis. A reinforced concrete minaret which is generally built in Turkey is selected as an application. Three-dimensional (3D) model of the minaret and its modal analysis are performed to obtain analytical frequencies and mode shapes using ANSYS finite element program. The minaret's linear transient analysis is carried out using the 1992 Erzincan earthquake ground motion record to obtain the earthquake behavior of the minaret. At the end of the study, the calculated displacement responses and maximum-minimum principal stresses concentrations for the minaret are briefly discussed and illustrated.

Evaluation of a Simplified Direct SSI Method in the Dynamic Seismic Behavior of Traditional RC Minarets

“…The most often built tall, thin structures in Turkey are reinforced concrete (RC) minarets, which have Islamic architectural influences. The essential components of an RC minaret are shown in Figure 1 [1].…”

Determination of Ground-Based Structural Problems in the Historical Four-Legged Minaret With Ground Penetration Radar

“…Minarets, which were built from stones, bricks, and wood, did not have a certain shape in the beginning and there are two styles of minarets that might be described in general: the first style is inspired by ancient lighthouses and/or bell towers having a square/rectangular cross-section in-plane and the second style that originated in Asia constructed in a cylindrical slender body [7]. Minarets can be considered one of the distinctive and essential structural components of the Islamic cityscape [8]. Throughout history, countless majestic minarets have been built in various parts of the world adapting structural approaches and utilizing various materials [6].…”