Seismic Safety Evaluation for Mountainous Highway Bridge Based on Risk Matrix

2011 ◽  
Vol 255-260 ◽  
pp. 4212-4216
Author(s):  
Gong Yuan Xie ◽  
Zhang Yue
Keyword(s):  
Seismic Design ◽  
Seismic Risk ◽  
Control Method ◽  
Safety Evaluation ◽  
Technical Support ◽  
Highway Bridge ◽  
Risk Matrix ◽  
Seismic Safety ◽  
Seismic Safety Evaluation

Risk matrix is applied to evaluate seismic risk on mountainous bridge. In this article, a continuous bridge is used as example to analyze the seismic risk of key position under a usual earthquake. Related control method is proposed to provide technical support for bridge seismic design and operation maintenance.

Seismic Risk Analysis of an Arch Dam

2013 ◽  
Vol 353-356 ◽  
pp. 2020-2023 ◽  
Author(s):  
Hong Zhong ◽  
Hong Jun Li ◽  
Yan Li Bao
Keyword(s):  
Risk Analysis ◽  
Seismic Risk ◽  
Safety Evaluation ◽  
Numerical Procedure ◽  
Monte Carlo Analysis ◽  
Elastic Vibration ◽  
Arch Dam ◽  
Seismic Risk Analysis ◽  
Seismic Safety ◽  
Seismic Safety Evaluation

Seismic risk analysis is greatly helpful to seismic safety evaluation of dams. A preliminary study on seismic risk analysis of arch dam based on numerical simulation is presented. The numerical procedure approximately takes into account the influence of concrete heterogeneity, it can model the response of the dam from elastic vibration to ultimate failure. Five seismic damage levels including no damage, minor damage, medium damage, serious damage and collapse of dam are defined. Through Monte-Carlo analysis of nonlinear response of the dam, which considers uncertainty persistent in ground motion input as well as material properties of concrete, status of the dam after subjected to earthquakes is obtained. The final seismic risk of the dam, which conforms to the norm distribution, is reached based on data fitting. The results provide meaningful reference to seismic safety evaluation of the dam.

Evaluation of Local Thinning Shape by LDI for Seismic Safety Evaluation of Piping System

2011 ◽  
Author(s):  
Ryo Morita ◽  
Fumio Inada ◽  
Michiya Sakai ◽  
Shin-ichi Matsuura ◽  
Shigenobu Onishi ◽  
...  
Keyword(s):  
Liquid Droplet ◽  
Safety Evaluation ◽  
Piping System ◽  
Flow Conditions ◽  
Droplet Impingement ◽  
Seismic Safety ◽  
Seismic Safety Evaluation ◽  
Droplet Behavior ◽  
Seismic Tests ◽  
The Relationship

For seismic safety evaluation of piping system with local thinning surface by liquid droplet impingement erosion (LDI), hybrid seismic tests were conducted to the piping with a locally-thinned elbow. In this paper, a method for predicting the thinning shape by LDI on the elbow is developed. To determine the thinning shape by LDI, droplet behavior at the elbow is calculated for various flow conditions and geometries. With the calculation of the collision point and velocity for each droplet, collision frequency and average collision velocity on the elbow are estimated. Then, the thinning shape on the elbow is determined with the relationship between the flow conditions and thinning rate. Finally, the evaluated thinning shape is compared with an actual LDI case for the validation of the method.

scholarly journals A Multilevel Approach for the Cultural Heritage Vulnerability and Strengthening: Application to the Melfi Castle

Buildings ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 158
Author(s):  
Cristina Cantagallo ◽  
Enrico Spacone ◽  
Daniele Perrucci ◽  
Nicola Liguori ◽  
Clara Verazzo
Keyword(s):  
Structural Integrity ◽  
Seismic Analysis ◽  
Pushover Analysis ◽  
Historical Analysis ◽  
Safety Evaluation ◽  
Soil Survey ◽  
Seismic Safety ◽  
Seismic Safety Evaluation ◽  
Cracking Pattern ◽  
Integrity Analysis

This study outlines a procedure for the seismic safety evaluation of historical buildings for engineers and architects that commonly work on buildings belonging to cultural and architectural heritage. The procedure is characterized by two interrelated phases: (a) building knowledge acquisition and (b) structural behavior analysis and safety assessment. The seismic safety evaluation strongly depends on the first phase, whose data can be obtained according to a multi-disciplinary approach based on five steps: (1) critical-historical analysis; (2) photographic documentation and geometrical survey; (3) structural identification and material survey; (4) foundation and soil survey; and (5) cracking pattern and structural integrity analysis. The proposed method was applied to the evaluation of the seismic safety of the Castle of Melfi (PZ, Italy). Comprehensive and multi-disciplinary knowledge of this monument greatly facilitated an accurate seismic analysis of this monument, which was conducted both at a local and global level using a linear kinematic analysis and non-linear static (pushover) analysis, respectively.

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