Published: September 2010 | Category: Activity management , Research programme , Research & reports | Audience: General
Profile variance, which is already listed in the NZ Transport Agency's RAMM database, is a measure of the difference between the actual road profile and its moving average over selected moving average lengths.
The relationships between measured dynamic bridge deflections and road profile variance and roughness values derived from raw road profiles for short, long and medium wavelengths were examined during 2008 2009.
These relationships between profile variance and bridge response were used to investigate the potential use of profile variance as a predictor of dynamic vehicle loads and as a means of screening New Zealand bridges for mitigation of damage, and for targeted and proactive maintenance.
Keywords: abutments, acceleration approaches, displacement, dynamic load, profile variance, roughness
