Abstract
A novel approach to assess historic ground motions from back analysis of struc-tural failures in historic masonry structures is presented using a fully dynamic, numerical, discrete element approach, the Discontinuous Deformation Analysis method (DDA). Two types of masonry structures exhibiting two different failure modes are analyzed: 1) dynamic key stone displacements in a masonry arche at the Roman Mamshit site, and 2) dynamic rock-ing and collapse of columns supporting the roof of a Byzantine church at the Susita site. The response of the structures is studied numerically up to a point of incipient failure in a mecha-nism similar to the one observed in the field, and paleoseismic PGA values are thus con-strained. The modeled structural response is found to be very sensitive to the input parameters of the dynamic loading function, predominantly amplitude and frequency.
| Original language | English |
|---|---|
| Pages (from-to) | 84-87 |
| Number of pages | 3 |
| Journal | ISRM News Journal |
| Volume | 12 |
| State | Published - 2009 |
Keywords
- a novel approach to
- abstract
- assess historic ground motions
- dynamics
- earthquake engineering
- from back analysis of
- masonry structures
- masonry structures is presented
- numerical
- old monuments
- paleo-pga
- seismic hazard
- struc-
- structural
- tural failures in historic
- using a fully dynamic