Experimental study on the method of bridge safety evaluation

2008 ◽  
Author(s):  
Bong Chul Joo ◽  
Ki Tae Park ◽  
Woo Sang Lee ◽  
Hwang Yoon Koog
Keyword(s):  
Experimental Study ◽  
Safety Evaluation ◽  
Bridge Safety

Design Optimization and Safety Evaluation of Cross-Sea Bridge Barrier

2011 ◽  
Vol 97-98 ◽  
pp. 100-107
Author(s):  
Lei Fang ◽  
Liang Zhang ◽  
Shu Ming Yan ◽  
Ning Jia ◽  
Min Jing ◽  
...  
Keyword(s):  
Design Optimization ◽  
Impact Test ◽  
Safety Evaluation ◽  
Full Scale ◽  
Finite Elements Analysis ◽  
Acceptance Criteria ◽  
Analysis And Design ◽  
Bridge Safety ◽  
Study Results ◽  
New Type

By comprehensive analysis and design optimization of barrier structure parameters, a new type of beam-and-post steel barrier was invented according to impact test condition and acceptance criteria of cross-sea bridge barrier. Full-scale impact tests and finite elements analysis were conducted to do safty evalution of the barrier. The results show that, ASI value is 1.62 for test and that is 1.67 for FEA, THIV is 30.7km/h for test and that is 31.2km/h for FEA. Working width is 0.88m for test and that is 0.62m for FEA. Occupant risk evaluation index can meet the requirements of level B and the working width can meet the requirements of level W3. Both of tracking and posture of vehicles are well. The study results above show that safety performance of cross-sea bridge barrier can meet or exceed the acceptance criteria. FEA results are consistent with Full-scale impact test, which validate the reliability of FEA. cross-sea bridge barrier can meet the highest test level for beam-and-post steel barrier, which can defend the out-of-control vehicles effectively and help to ensure the bridge safety.

Research on Multi-Level Fuzzy Evaluation for Safety of Floating Bridge in Complicated Engineering Environment

2013 ◽  
Vol 312 ◽  
pp. 928-933
Author(s):  
Yin Zhi Zhou ◽  
Jian Ping Wang
Keyword(s):  
Risk Factors ◽  
Evaluation Model ◽  
Safety Evaluation ◽  
Fuzzy Evaluation ◽  
Factors Affecting ◽  
Evaluation Indexes ◽  
Bridge Safety ◽  
Engineering Environment ◽  
Floating Bridge ◽  
Floating Bridges

In this paper, according to the characteristics such as great traffic throat role, obvious target and easy-to-expose, and poor protection ability of the floating bridges established in wartime and on the basis of comprehensively analyzing all risk factors affecting the floating bridges, a floating-bridge safety evaluation indexes system and a grey matter-element evaluation model 41 specific factors in the complex environment containing are established using enemy's threat, commanding decision, river environment, personnel's operation, equipment's quality, load passing and other risk factors encountered by the floating bridges as the primary indexes. Then, a safety evaluation is made in combination with a floating bridge setting-up case, thus drawing up a conclusion that the safety of this floating bridge is in a moderate state. Meanwhile, the main factors affecting the safety of the floating bridges are determined, thus providing certain references for the safety evaluation of other engineering.

Application of Multi-Monitoring Information for Bridge Safety Evaluation

2012 ◽  
Vol 479-481 ◽  
pp. 493-496
Author(s):  
Yen Jen Lee ◽  
Jet Chau Wen ◽  
Chern Hwa Chen ◽  
Yuh Yi Lin
Keyword(s):  
Structural Damage ◽  
Safety Management ◽  
Safety Evaluation ◽  
Structural Safety ◽  
Bridge Health Monitoring ◽  
Stay Cables ◽  
Bridge Safety ◽  
Wind Vibration ◽  
Main Girder

Due to large flexibility in cable-stayed bridges, vibrations induced by seismic, traffic and wind loads are more significant than those in other types of bridges. These vibrations may cause structural damage, such as fatigue in stay cables, large deflection in main girder, etc. The objective of this paper is to investigate long-term dynamic characteristics of the Kao Ping Hsi cable-stayed bridge subjected to different external force conditions by using a bridge health monitoring system (BHMS). The bridge has been bearing the loads of traffic for more than a decade. To ensure the safety of the Bridge, the Bureau has developed a BHMS for the long-term monitoring of the overall structural safety over the entire operation stage in terms of seismic response, wind resisting response and cable vibration, as well as travel comfort. The BHMS will provide multi-alarm information for the study of bridge safety management and maintenance in relation to seismic activities, wind vibration and traffic.

Research of the Forecast and Early Warning System for Bridges

2011 ◽  
Vol 243-249 ◽  
pp. 1978-1983
Author(s):  
Hao Wu ◽  
Da Wen Peng
Keyword(s):  
Data Acquisition ◽  
Early Warning ◽  
Early Warning System ◽  
Safety Evaluation ◽  
Warning System ◽  
Data Acquisition System ◽  
General Idea ◽  
Industrial Ethernet ◽  
Bridge Safety ◽  
Data Transforming

Firstly, the paper elaborates the general idea of the design of bridge forecasting and early-warning system. Based on the Compact RIO data acquisition terminal, the data acquisition system is established with data transforming through Industrial Ethernet and Internet. Finally, a remote safety evaluation center is developed with B/S frame, to process and analyze the collected data with the purpose of evaluating and forecasting the safety condition of the bridge. The application proposed by the paper can bring certain foresights in solving the bridge safety problems.

Bridge Safety Evaluation Based on Monitored Live Load Effects

2009 ◽  
Vol 14 (4) ◽  
pp. 257-269 ◽  
Author(s):  
Ming Liu ◽  
Dan M. Frangopol ◽  
Sunyong Kim
Keyword(s):  
Safety Evaluation ◽  
Live Load ◽  
Bridge Safety ◽  
Load Effects

scholarly journals A probabilistic bridge safety evaluation against floods

SpringerPlus ◽  
2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Kuo-Wei Liao ◽  
Yasunori Muto ◽  
Wei-Lun Chen ◽  
Bang-Ho Wu
Keyword(s):  
Safety Evaluation ◽  
Bridge Safety
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