Dynamic response of ancient masonry structure due to seismic loads

Abstract

This research aimed to evaluate the dynamic response of a masonry structure, the Chediluang (Pagoda), located in Chiangmai province in the northern part of Thailand. The analyzed pagoda was partly destroyed by the past earthquake. Dynamic response of the structure was computed using the finite element method (FEM). The input parameters such as Poisson’s ratio, compressive and tensile strength, shear modulus and shear wave velocity are selected from the report and in-situ testing. Strong ground motions of magnitude of 4, 6 and 7) were generated from two most nearby active faults. Analytical results revealed that some parts of the structure might subject to tensile stress greater than the allowable values, when ground motion from earthquakes of magnitude 6 were used as the input motion.