Assessment of seismic loading on structures based on airborne LiDAR data from the Kalochori urban area (N. Greece)
| Autor: | Dimitris Bliziotis, Konstantia Makra, Emmanouil Kirtas, Evangelos Maltezos, Eleftheria Marini, Dimitris Pitilakis, Alexandros Savvaidis, Emmanouil Rovithis |
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| Rok vydání: | 2016 |
| Předmět: |
Return period
geography geography.geographical_feature_category Geographic information system City block business.industry Seismic loading 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Urban area 0201 civil engineering Residential area Seismic analysis Lidar business 021101 geological & geomatics engineering Remote sensing |
| Zdroj: | Fourth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2016). |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.2241746 |
| Popis: | Airborne LiDAR monitoring integrated with field data is employed to assess the fundamental period and the seismic loading of structures composing an urban area under prescribed earthquake scenarios. Α piecewise work-flow is adopted by combining geometrical data of the building stock derived from a LiDAR-based 3D city model, structural data from in-situ inspections on representative city blocks and results of soil response analyses. The procedure is implemented in the residential area of Kalochori, (west of Thessaloniki in Northern Greece). Special attention is paid to the in-situ inspection of the building stock in order to discriminate recordings between actual buildings and man-made constructions that do not conform to seismic design codes and to acquire additional building stock data on structural materials, typologies and number of stories which is not feasible by the LiDAR process. The processed LiDAR and field data are employed to compute the fundamental period of each building by means of code-defined formulas. Knowledge of soil conditions in the Kalochoti area allows for soil response analyses to obtain free-field at ground surface under earthquake scenarios with varying return period. Upon combining the computed vibrational characteristics of the structures with the free-field response spectra, the seismic loading imposed on the structures of the urban area under investigation is derived for each one of the prescribed seismic motions. Results are presented in GIS environment in the form of spatially distributed spectral accelerations with direct implications in seismic vulnerability studies of an urban area. |
| Databáze: | OpenAIRE |
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