scholarly journals Damage assessment of Nepal heritage through ambient vibration analysis and visual inspection

2020 ◽  
Vol 27 (5) ◽  
Author(s):  
Russo Salvatore ◽  
Spoldi Eleonora
Keyword(s):  
Vibration Analysis ◽  
Damage Assessment ◽  
Visual Inspection ◽  
Ambient Vibration

Diagnostics of piping by ambient vibration analysis

2000 ◽  
Vol 198 (1-2) ◽  
pp. 131-140 ◽  
Author(s):  
A Mattheis ◽  
M Trobitz ◽  
K Kussmaul ◽  
K Kerkhof ◽  
R Bonn ◽  
...  
Keyword(s):  
Vibration Analysis ◽  
Ambient Vibration

scholarly journals A SYNCHRONIZED APPROACH FOR INTEGRATING PHOTOS AND 3D GIS IN THE APPLICATIONS OF DISASTER MANAGEMENT

2019 ◽  
Vol XLII-3/W8 ◽  
pp. 143-150
Author(s):  
J.-H. Hong ◽  
C.-H. Chen
Keyword(s):  
Disaster Management ◽  
Damage Assessment ◽  
Visual Inspection ◽  
Mobile Network ◽  
Feature Points ◽  
3D Gis ◽  
Gis Data ◽  
Before And After ◽  
Dual Window ◽  
Comprehensive Reference

<p><strong>Abstract.</strong> Photos are an effective tool for recording ongoing disaster situations or damages after hazards. The emergence of smartphones has revolutionary influences on the use of photos. Even the general public can take photos, report any disaster situations they observe via mobile network, and share photos in social media because nearly everyone has a smartphone. These photos may provide valuable information about the disaster in reality. In addition to visual inspection, effectively and efficiently taking advantage of the available photos remains an interesting challenge. From a 3D perspective, we propose a synchronized approach for integrating the visualization and manipulation of photos and 3D geographic information system (GIS) data. The photos provide newly acquired disaster situations, while the 3D GIS data provide a realistic and comprehensive reference and links to other domain data to analyze damages from different viewpoints effectively. The key idea is to restore the position and orientation when the photo is taken in the system and synchronize the visualization of both types of data with a dual-window interface. If common feature points between the photos and 3D GIS data can be found, the damage assessment can be even more accurate. This approach will be extremely useful when before-and-after situations are compared. With the awareness of environment changes and willingness of participation from citizens increase, the proposed approach presents a new direction by highlighting the use of photos for improved decision making in disaster management.</p>

scholarly journals Ambient vibration analysis of an unstable mountain slope

2010 ◽  
Vol 180 (2) ◽  
pp. 820-828 ◽  
Author(s):  
Jan Burjánek ◽  
Gabriela Gassner-Stamm ◽  
Valerio Poggi ◽  
Jeffrey R. Moore ◽  
Donat Fäh
Keyword(s):  
Vibration Analysis ◽  
Ambient Vibration ◽  
Mountain Slope

Story Damage Identification of Irregular Buildings Based on Earthquake Records

2013 ◽  
Vol 29 (3) ◽  
pp. 963-985 ◽  
Author(s):  
Jer-Fu Wang ◽  
Chi-Chang Lin ◽  
Ging-Long Lin ◽  
Chun-Hao Yang
Keyword(s):  
Damage Assessment ◽  
Visual Inspection ◽  
Damage Identification ◽  
Damage Index ◽  
Analytical Formula ◽  
Mode Shapes ◽  
Severe Damage ◽  
Concrete Building ◽  
Damage Condition ◽  
Identification Techniques

In this paper, a story damage index was developed to evaluate the damage condition of a torsionally coupled building based on its dominant modal frequencies and mode shapes. This index has an analytical formula with a calculated value ranging from 0 (undamaged) to 1.0 (collapsed) to indicate the reduction of story lateral stiffness. The involved computation is simple once the modal parameters of any three modes are obtained through system identification techniques from few floor acceleration measurements. The damage region within a story can also be identified through tracking the change of eccentricity of center of rigidity. This index was verified by numerical simulations and a data analysis of the ASCE benchmark model. In addition, it was also applied to the damage assessment of a four-story reinforced concrete building in Taiwan, which experienced severe damage during the 2006 Taitung Beinan earthquake ( M = 6.2). The results agree fairly well with the visual inspection and show the applicability of the proposed damage assessment technique.

Damage Assessment of Cultural Heritage Structures after the 2015 Gorkha, Nepal, Earthquake: A Case Study of Jagannath Temple

2017 ◽  
Vol 33 (1_suppl) ◽  
pp. 363-376 ◽  
Author(s):  
Sujan Shrestha ◽  
Bipin Shrestha ◽  
Manjip Shakya ◽  
Prem Nath Maskey
Keyword(s):  
Damage Assessment ◽  
Ambient Vibration ◽  
Kathmandu Valley ◽  
In Situ Tests ◽  
World Heritage Sites ◽  
Heritage Sites ◽  
Nepal Earthquake ◽  
Observed Damage

The Gorkha, Nepal, earthquake and the series of aftershocks that followed have damaged many heritage structures in and around Kathmandu Valley, including UNESCO World Heritage Sites (WHSs). This paper summarizes observed damage to the heritage structures of diverse typologies within the UNESCO WHSs of Kathmandu Valley. As a part of the investigation, inspection survey and damage assessment were carried out for Jagannath Temple, one of the partially damaged monuments in the Kathmandu Durbar Square WHS. Ambient vibration and in-situ tests using the pendulum hammer, the rebound hammer, and in-place push on masonry walls were performed. Finite-element models of the structure were developed, and the results were analyzed and compared with field observations. Based on the observed damages and the results obtained from numerical modeling, the primary causes of the damage are discussed.

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