Universität zu Köln

Hinzen, Klaus-G. and Montabert, Arnaud (2017). Rectangular blocks vs polygonal walls in archaeoseismology. Ann. Geophys., 60 (4). ROME: IST NAZIONALE DI GEOFISICA E VULCANOLOGIA. ISSN 2037-416X

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Abstract

Collapsed or deformed walls in ancient structures constitute important evidence in archaeoseismology, where damage is interpreted in terms of earthquake ground motion. A large variety of wall types have been developed during the millennia in different cultural backgrounds. Often walls with polygonal-shaped building blocks are regarded as more earthquake-resistant than a wall consisting of rectangular elements and, as is sometimes speculated, that the irregular wall types were intentionally developed for that purpose. We use simply structured discrete element models of four walls with different block geometries, perfect rectangular, an Inca-type structure and two polygonal designs, to test their dynamic behavior. In addition to an analytic calculation of ground motion, we use measured strong motion signals as boundary conditions for the 3D wall models with varying height to width ratios. At peak ground accelerations between 1.0 and 9.0 m/s(2) and major frequencies of 0.5 to 3 Hz, numeric experiments with the horizontally applied analytic ground motions result in clear differences in the resistance of the four wall types with the rectangular block wall being most vulnerable. For more complex measured 3D motions the Inca-type wall proves more stable than the rectangular block wall; however, height to width ratio still has equally strong influence on the stability. Internal deformation of non-collapsed walls shows some correlation with the parameters of the driving motion. For simple impulsive ground motions, a peak ground displacement threshold exists between toppling and remaining upright for all four models but peak acceleration cannot be reliably back calculated.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hinzen, Klaus-G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Montabert, Arnaud UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-245440
DOI:	10.4401/ag-7127
Journal or Publication Title:	Ann. Geophys.
Volume:	60
Number:	4
Date:	2017
Publisher:	IST NAZIONALE DI GEOFISICA E VULCANOLOGIA
Place of Publication:	ROME
ISSN:	2037-416X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEA FAULT ZONE; GROUND-MOTION; EARTHQUAKE; DAMAGE; ARCHAEOLOGY; SIMULATION; COLUMNS; HISTORY; MODELS Multiple languages Geochemistry & Geophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24544