Preliminary Evaluation Of The
Seismic Vulnerability Of The
Inca’s Coricancha Temple Complex In Cusco
Author(s)
C. Cuadra, Y. Sato, J. Tokeshi, H. Kanno, J. Ogawa, M. B. Karkee
& J. Rojas
Abstract
Coricancha was probably the most important Inca temple complex dedicated
primarily to Inti, the Sun god. At present, a small part of the Inca stonework is all
that remains of the ancient complex. Most of the complex was demolished by
Spaniard conquistadors in the 17th century to make way for the construction of
Catholic Church of Santo Domingo on this site, using part of the Inca
construction as the foundation. This complex is a fine example of how Inca
stonework had been incorporated into the structure of a colonial building. Major
earthquakes have severely damaged the church, but the Inca stone walls, built out
of huge, finely cut tightly-fitting blocks of stone, still stand as a testimony to
Inca’s architectural skills and sophisticated stone masonry practice.
In this complex, a series of microtremor measurements were carried out to
estimate the dynamic characteristics of the structures and the ground.
Measurements on buildings include the Inca’s masonry walls as well as the
tower of the colonial church. Measurements to estimate the ground
characteristics were performed in the inner yard and at the outer garden of the
complex. In this paper, the results of the measurements and corresponding
interpretations are discussed. It was found that the predominant period of
vibration of the church tower is comparable to the predominant period of the
ground, and therefore, the tower appears to be more vulnerable to earthquake
occurrence because of the possible resonance phenomenon to be expected.
Keywords
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