Determination of strain correction factors for bridge weigh-in-motion systems

Aleš Žnidarič (Avtor), Goran Turk (Avtor), Eva Zupan (Avtor)

Povzetek

The paper presents an automatic procedure for the correction of bridge weigh-in-motion (B-WIM) measurements, which are used to determine the axle loads of heavy vehicles using instrumented bridges. According to the European specifications for weigh-in-motion criteria, using this procedure the weighing results could be improved by up to one accuracy class. Whereas measurements performed on steel structures provide reliable information about the global behaviour of individual bridges, which is accounted for in the B-WIM algorithms, cracks that are present in concrete structures can, depending on their locations with respect to installed strain transducers, amplify or reduce the response. In the present work special care was taken to detect and calibrate any strain transducer which showed a disproportional response. The accuracy of the method was investigated numerically in relation to the extensive data which were available in the case of a reinforced concrete bridge (motorway underpass), located near Ljubljana, Slovenia, and then validated by a one-to-one comparison of the B-WIM weighing results and the statically weighed test vehicles.

Ključne besede

WIM-tehtanje med vožnjo;odzivi mostov;meritve deformacij;nelinearna regresija;korekcija meritev;gradbene konstrukcije;WIM - weigh-in-motion;bridge response;strain gauges;nonlinear regression;correction of measurements;

Podatki

Jezik:	Angleški jezik
Leto izida:	2015
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	Elsevier
UDK:	624.04
COBISS:	7254113
ISSN:	0141-0296
Št. ogledov:	1586
Št. prenosov:	827
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarne ključne besede:	WIM-tehtanje med vožnjo;odzivi mostov;meritve deformacij;nelinearna regresija;korekcija meritev;gradbene konstrukcije;
Vrsta datoteke:	application/pdf
Strani:	str. 387-394
Letnik:	102
Zvezek:	ǂVol. ǂ102
Čas izdaje:	Nov. 2015
DOI:	10.1016/j.engstruct.2015.08.026
ID:	9148927