Abstract
Heavy traffic on the bridge cause not only static effects, but also dynamic effects. These effects can be indicated by different dynamic parameters like – natural frequency, bridge logarithmical decrement, bridge acceleration and dynamic amplification factor (DAF). Dynamic amplification factor is the most widely used parameter, because it shows amplification of the static effects on the bridge structure. Results show that for bridges road surface condition is a very important factor. If road surface contains ice bumps or potholes then heavy traffic driving with low speed can decrease load carrying capacity of a bridge.
Highlights
Heavy traffic loads on the European roads increase every year speeding up the deterioration of the road pavement and bridge structures
Obtained results show that dynamic amplification factor (DAF) values for reinforced concrete and prestressed concrete bridges does not depend only on span length but there are many other factors that influence DAF
If road surface has ice bumps in the winter or potholes heavy traffic driving with low speed can significantly increase deterioration of bridge structure
Summary
Heavy traffic loads on the European roads increase every year speeding up the deterioration of the road pavement and bridge structures. To understand the cause of the deterioration and reconsider bridge load carrying capacity it is important to the traffic data such as- truck traffic percentage and axle loads This information can be obtained from weight-in–motion (WIM) technology. Additional dynamic load usually does not lead to major bridge failures, dynamic vehicle load can cause problems that later contribute to fatigue, surface wear rapid deterioration and cracking of concrete that leads to reinforcement corrosion (Cebon 1999). It decreases bridge lifetime and increase the maintenance cost of the structure. Purpose of this study is to determine how various bridge parameters and loading conditions influence Dynamic amplification factor (DAF) of Latvian bridges with span length up to 35 m
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
