000019676 001__ 19676
000019676 005__ 20170118182331.0
000019676 04107 $$aeng
000019676 046__ $$k2017-01-09
000019676 100__ $$aWu, Qingxiong
000019676 24500 $$aShaking Table Test Study on Seismic Performance of Concrete Arch Bridge With Steel Web

000019676 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019676 260__ $$b
000019676 506__ $$arestricted
000019676 520__ $$2eng$$aConcrete arch bridge with steel web plate is a new type of composite bridge, of which the main arch ring consists of concrete top plate, bottom plate, and corrugated or plane steel web. This new structure has advantages of light-weight, convenient construction, and consequentially, extending the span of concrete arch bridge. In this study, three concrete arch model experiments in scale 1:14.5, including one conventional reinforced concrete (RC) arch model based on a practical project and two trial designed concrete arch models with corrugated steel web (CSW) and plane steel web (PSW), have been carried out to investigate the natural modes and seismic response by the Earthquake Simulation Triple Shaking Tables System at Fuzhou University. The first order natural frequencies of the arch models in the in-plane and out-plane directions were reduced by replacing the RC web with CSW and PSW webs due to the loss of the integral rigidity of the arch models; Under the transverse seismic excitations, the RC-CSW arch model presented the largest displacement response and outplane acceleration magnification coefficients among the three arch models; Under the longitudinal seismic excitations, RCCSW and RC-PSW arch models showed slightly larger displacement responses and in-plane acceleration magnification coefficients than those of RC arch model; As the PGA of longitudinal seismic excitations increased, a large number of cracks gradually occurred in the arch springing of RC arch model whereas the RC-CSW and RC-PSW models were still in elastic working stage. The maximum strain of RC arch model was approximately 1.5 times larger than the other two models. It is believed that the replacement of RC web with CSW or PSW can reduce the internal force of arch bridge.

000019676 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019676 653__ $$ashaking table test, concrete arch bridge, steel web

000019676 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019676 720__ $$aWu, Qingxiong$$iYuan, Huihui
000019676 8560_ $$ffischerc@itam.cas.cz
000019676 8564_ $$s580307$$uhttps://invenio.itam.cas.cz/record/19676/files/4153.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4153.
000019676 962__ $$r16048
000019676 980__ $$aPAPER