Multi-axle Load Identification in Laboratory

The objective of this paper is to identify moving multi-axle loads on bridges with the moving force identification system developed as an advancement of traditional Weigh-In-Motion (WIM) technology. Different multiple axle vehicles were designed and constructed in the laboratory for validation purposes of the moving force identification system according to the AASHTO standard specifications of highway bridges (1996). Two connection ways between the tractor and trailer of trucks and three suspension systems were simulated. Various multiple axle loads were identified. Effects of different vehicle and bridge parameters were also evaluated and, the characteristics between the vehicles and bridges were finally assessed based on the identified results