content name:
  Bridges are designed and assessed for characteristic load effects, that is, those load effects corresponding to a certain return period. Maximum static load effects are measured or simulated and these are multiplied be some factor to allow for dynamics. The recommended allowance for dynamics is necessarily conservative to allow for the broadly varying circumstances covered by the bridge codes. Quantifying the dynamic increment of load effect, Dynamic Amplification Factor (DAF) is typically used. This paper however, is concerned with Assessment Dynamic Ratio (ADR), which is related to return period in preference to DAF which is specific to a single traffic event. Recent studies in this area have shown that there is a falling trend in ADR as return period increases. Using Bridge-based Weigh-In-Motion (B-WIM) systems is use at the moment, this trend indicates that it may be possible to extract a realistic and site-specific ADR value, given bridge measurements taken over a relatively short time period. This paper looks at the accuracy of the system used to gather the data, specifically the algorithm upon which the most popular B-WIM systems are based. Project presentation can be accessed here
content link: http://www.ectri.org/YRS09/Papiers/Session6/Dowling_J_Session6_Road_Transport(1).pdf
content language: English
English summary: yes
If you want to rate, please register or log in.
user comments  
This content is related to:
project type
National projects 
area of interest
 bridges & retaining walls
 construction materials
user type
road authorities/owners 
material producers 
Other similar contents:

The similarity algorithm calculates how much two contents in the system are similar to one another. So far, similarity is calculated based on similarity of the project type, area of interest and user type. Generally, if two contents have more parameters in common they are more similar to each another. More information.

content description similarity (%)
Trials of a mobile MLS technique for characterising road surface absorption  A test based upon Maximum Length Sequence (MLS) methods has been developed for the in-situ measureme ...  68.75 
TRL636 The application of Enrobe a Module Eleve in flexible pavements  An investigation was carried out into the properties and performance of a high modulus asphalt mater ...  68.33 
Improving on flexible pavement IRI prediction by correcting for possible bias  The smoothness prediction models (in IRI) currently incorporated into the Mechanistic-Empirical Pave ...  68.33 
BASt Report: Effects of new vehicle concepts on the infrastructure of the federal trunk road network  BASt studied the “Possibilities for use and effects of 60 t trucks on federal trunk roads" The ...  68.06 
Structural Evaluation of flexible pavements using non destructive tests  The aim of this paper is to contribute to the improvement of the methodologies used in structural pa ...  66.67 
Noise Emission of typical road Surfaces within New Member States using the CPX Method and the new ASTM Tyre in the EU project SPENS  Traffic noise is one of the major environmental concerns within the European Union. More than 80% of ...  66.67 
Dynamic traffic and safety management in Brussels  Sustainable development is one of the major challenges of the 21st century. Faced with the growing d ...  66.07 
The crucial role of regular financing of public roads: the case of Hungary  Non-regularly and insufficiently financed road construction, maintenance and operation can cause los ...  64.17 
Warm asphalt bituminous mixtures with regards to energy, emissions and performance  With the current concerns about sustainable development and greenhouse gas emissions in various fiel ...  63.84 
Road salting -a synopsis  This report show the use of salt on winter roads, in other words how chemical methods are used to re ...  63.33 
created: Sylvia Derveaux, 31.08.2009 12:00:00
last modified: Sylvia Derveaux, 31.08.2009 12:01:00