000021830 001__ 21830
000021830 005__ 20170622131307.0
000021830 04107 $$aeng
000021830 046__ $$k2017-06-15
000021830 100__ $$aJeensrikong, Witchuda
000021830 24500 $$aEFFECTIVENESS OF BRIDGE WEIGH-IN-MOTION UNDER MULTIPLE PRESENCE OF VEHICLES

000021830 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021830 260__ $$bNational Technical University of Athens, 2017
000021830 506__ $$arestricted
000021830 520__ $$2eng$$aThe vehicle weight determination obtained from the weigh-in-motion system installed beneath a bridge (Bridge weigh-in-motion, B-WIM) in case of multiple presence of two heavy vehicles simultaneously traveling side-by-side on the bridge is investigated. Mathematically, this becomes an inverse ill-posed problem that is quite difficult to be accurately solved. The identification method, namely the Beta method which were reported to be quite effective for weight identification of single truck passage, is extended to identify the weights of multiple trucks by including the transverse distribution of the wheel loads on each girder. The method is enhanced to capture the effects of multiple trucks on the bridge responses and can be used to identify the weight of each truck. The study will conduct the field test on an actual RC bridge having 2 traffic lanes in one direction and 21.70-meter span. The bridge is composed of 5 girders with RC deck slab. The weigh-in-motion system utilizes 5 strain sensors installed on each girder at the bridge mid-span. The strain data is synchronized with the truck classification system using two laser sensors installed along the bridge barrier. About 8 cases of bridge strain histories under single-truck passages having different speeds and traffic lanes (left or right lane) were recorded. These strain signals are used to artificially construct the bridge responses under multiple presences of two trucks traveling on the bridge side-by-side using linear superposition of two records from single truck passages on left and right lanes. The truck weight identification under generated multiple presences of trucks by using the proposed technique is conducted. Based on the obtained results, the effectiveness of the technique is investigated and discussed.

000021830 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021830 653__ $$aBridge weigh-in-motion, Beta method, Transverse distribution of wheel loads, Multiple Presence

000021830 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021830 720__ $$aJeensrikong, Witchuda$$iPinkaew, Tospol
000021830 8560_ $$ffischerc@itam.cas.cz
000021830 8564_ $$s933435$$uhttps://invenio.itam.cas.cz/record/21830/files/18100.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000021830 962__ $$r21500
000021830 980__ $$aPAPER