000022507 001__ 22507
000022507 005__ 20170724144652.0
000022507 04107 $$aeng
000022507 046__ $$k2017-07-04
000022507 100__ $$aSong, Jie
000022507 24500 $$aDynamic properties of wind-excited linked tall buildings considering both intra- and interbuilding structural couplings

000022507 24630 $$n7.$$p7th European and African Conference on Wind Engineering 
000022507 260__ $$bl'Association pour l'Ingénierie du Vent
000022507 506__ $$arestricted
000022507 520__ $$2eng$$aOwing to urbanization and limited space in densely-populated cities, high-rise buildings have frequently been built extremely close to each other. In turn, there is a growing trend of linked building systems (LBSs), i.e., systems comprising tall buildings in close proximity connected via horizontal structural links such as skybridges, skygardens, and skypools. In addition, recent trends of irregular and more complex structural systems are likely to result in buildings having eccentricities between the mass and stiffness centers of each floor. These eccentricities then lead to intra-building structural coupling between directional wind-induced response components of each building. Although the inter-building structural coupling caused by links has been investigated, the effect of the intra-building structural coupling on the dynamic performance of wind-excited LBS has not yet been investigated. In view of this, this paper systematically examines the effects of the intra-building structural coupling on the modal properties and dynamic responses of LBSs. First, an improved analytical evaluation model considering both the inter-building coupling caused by the link and the intra-building structural coupling has been developed for twin buildings connected by several links. Expressions for the modal properties of four representative configurations of the eccentricities are then derived by solving the associated characteristic equation. Applying these expressions to an example LBS shows that the intra-building structural coupling can cause significantly coupled modes. Eccentricities in the x direction produce coupled vibrations between the y and θ directions, whereas eccentricities in the y direction lead to 3D coupled vibrations among x, y and θ directions. Employing the results from modal analysis and wind force data measured from wind tunnel test, the wind-induced responses of a series of LBSs with different intra-building

000022507 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022507 653__ $$a

000022507 7112_ $$a7th European and African Conference on Wind Engineering$$cLiège, BE$$d2017-07-04 / 2017-07-07$$gEACWE2017
000022507 720__ $$aSong, Jie$$iHu, Gang$$iLiang, Shuguo
000022507 8560_ $$ffischerc@itam.cas.cz
000022507 8564_ $$s50758$$uhttps://invenio.itam.cas.cz/record/22507/files/19.pdf$$yOriginal version of the author's contribution in proceedings, id 19, section .
000022507 962__ $$r22493
000022507 980__ $$aPAPER