000018310 001__ 18310
000018310 005__ 20170118182216.0
000018310 04107 $$aeng
000018310 046__ $$k2017-01-09
000018310 100__ $$aDashti, Shideh
000018310 24500 $$aCentrifuge and Numerical Modelling of Shallow Underground Structures Adjacent To Tall Buildings

000018310 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018310 260__ $$b
000018310 506__ $$arestricted
000018310 520__ $$2eng$$aShallow underground structures used for public transportation are a key component of sustainable cities. In dense urban environments, underground structures are often built near tall buildings. Although such buildings have the potential to alter ground motions in their vicinity and transmit significant forces to adjacent underground structures during earthquakes, these impacts are not well understood. Centrifuge testing and nonlinear numerical simulations are performed to evaluate seismic interactions between the soil, underground structure, and adjacent midrise or highrise buildings. The response of an 8 m high x 14 m wide embedded cut and cover tunnel structure is first studied without any adjacent buildings present, where numerical model estimates are compared and calibrated with the measured response. Two additional experiments are conducted with a mid-rise and a high-rise model building added near the underground structure to assess the change in the seismic response of the tunnel due to soil-structure-underground structure-interaction (SSUSI). Results indicate that the presence of an adjacent mid-rise building can be adequately modeled using three-dimensional numerical tools suggesting they are appropriate for use in seismic design for these complex interactions. The models show good agreement with experimental measurements in terms of displacements and accelerations on the buried structure. The dynamic lateral thrust acting on the underground structure is shown to roughly follow the adjacent building’s base shear in shape and amplitude.

000018310 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018310 653__ $$asite response; soil-structure; centrifuge; numerical modeling; LS-DYNA

000018310 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018310 720__ $$aDashti, Shideh$$iHashash, Youssef$$iMusgrove, Michael$$iGillis, Kenneth
000018310 8560_ $$ffischerc@itam.cas.cz
000018310 8564_ $$s828074$$uhttps://invenio.itam.cas.cz/record/18310/files/1208.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1208.
000018310 962__ $$r16048
000018310 980__ $$aPAPER