Moving Force Identification Studies, I: Theory

Moving Force Identification Studies, Ii: Comparative Studies

“…(4) Monitoring is important when "eld measurements are carried out. In order to facilitate monitoring, the governing equations of TDM (refer to reference [15] for notations) should be modi"ed as…”

“…The fourth method, which is called the interpretative method II (IMII) [14], is similar to IMI. The theoretical background and a preliminary study of the four moving force identi"cation methods have been introduced in the companion paper [15]. The TDM has also been applied successfully to a "eld study [16].…”

Simultaneous identification of bridge structural parameters and vehicle loads

“…From bridge design point of view, it is also desirable to measure the vehicle axle loads [1]. Weigh-in-motion (WIM) systems [2] have been developed, which measure the bridge strains caused by moving vehicles to estimate the equivalent static axle loads [3,4]. However, the accuracy of the WIM systems often depends on the road surface condition and the results are reliable only when the vehicle speed is low and bridge pavement surface is smooth [5].…”

Moving train loads identification on a continuous steel truss girder by using dynamic displacement influence line method

“…After that, a time domain technique for load identification by simplifying bridge and moving loads as an orthotropic plate and a group of time varying forces were presented (Zhu and Law, 2000). Subsequently, a moving force identification system (FMIS) was gradually formed by merging the four methods together, including interpretive method I (Connor and Chan, 1988), interpretive method II , time domain method (Law and Chan, 1997) and frequency time domain method , according to their own merits and applicability (Chan et al, 2001a(Chan et al, , 2001bYu and Chan, 2007). In recent years, the identification method based on optimization technique have a further development.…”