000019895 001__ 19895
000019895 005__ 20170118182342.0
000019895 04107 $$aeng
000019895 046__ $$k2017-01-09
000019895 100__ $$aWang, Xiaowei
000019895 24500 $$aExperimental Investigation on Seismic Resonance Behavior of Pile Foundation Structures Under Scouring Condition

000019895 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019895 260__ $$b
000019895 506__ $$arestricted
000019895 520__ $$2eng$$aDynamic response mechanism of soil-pile-structure system (SPSS) is a complicated problem in the field of earthquake engineering. To this end, a series of shake table tests were carried out to investigate the seismic resonance behavior of SPSS. A reinforced concrete (RC) specimen comprised of a lumped mass representing the superstructure, a single pier, and a cap supported by a 2×2 pile group was constructed and embedded into unitary dry sand. First the dynamic properties of SPSS were investigated using white noise input. In order to excite resonance response of each fundamental vibration modes, three sinusoidal waves with the same peak acceleration of 0.1g with frequencies of 2Hz, 7Hz and 15Hz were utilized. To represent the scouring phenomena, which is common for the foundation of bridges over waterways, soil layers were removed. The acceleration response of the structure and sand, as well as curvature of pier and foundation, were detected. The results showed that the SPSS has three fundamental vibration modes, which are dominated by the motion of superstructure, pile-cap and soil layers, respectively. Due to the resonance effect between earthquake input and certain vibration modes, seismic response of SPSS varied significantly when the frequency of the dynamic loading changed. This underlines the importance of studying the careful selection of ground motion inputs for seismic design of bridges that have the possibility of a scoured foundation.

000019895 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019895 653__ $$asoil-pile-structure system, shaking table test, resonance response, foundation scour, input motion types

000019895 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019895 720__ $$aWang, Xiaowei$$iYe, Aijun$$iShang, Yu$$iAlipour, Alice
000019895 8560_ $$ffischerc@itam.cas.cz
000019895 8564_ $$s657430$$uhttps://invenio.itam.cas.cz/record/19895/files/4628.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4628.
000019895 962__ $$r16048
000019895 980__ $$aPAPER