000012134 001__ 12134
000012134 005__ 20141205160022.0
000012134 04107 $$aeng
000012134 046__ $$k2008-10-12
000012134 100__ $$aXiong, Feng
000012134 24500 $$aSeasonally Frozen Soil Effects on the Dynamic Behavior of Building Structures

000012134 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012134 260__ $$b
000012134 506__ $$arestricted
000012134 520__ $$2eng$$aSome studies have shown that the seasonally frozen soils have a significant effect on the dynamic properties of building structures, which will yield increases in the fundamental frequencies from summer to winter. The changes in frequencies, however, appear a wide range from 4% to 50%. The factors to control the magnitude of this effect are important for earthquake engineering since it determines if the frozen soil effect needs to take account when designing buildings in the cold regions. Three buildings in the similar climate condition are studied in this paper to compare this effect. Through instruments in the field the ambient noise and small earthquake-induced vibrations have been recorded and their dynamic properties are identified. The changes in the first frequency during various seasons are discussed. The further parametric study using FE models is conducted. The relative stiffness between superstructures and soils is founded as a key factor. A ratio coefficient is presented to relate the frequency change when the ground freezing. Another possible factor is the building configuration or foundation design, which determines if the heat inside the building migrates to the soils under and surrounding the building, and if frozen soils occur for individual buildings.

000012134 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012134 653__ $$aSeasonally Frozen Soils, Fundamental Frequencies, Structural Stiffness, Finite Element Modeling, Field Test.

000012134 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012134 720__ $$aXiong, Feng$$iYang, Zhaohui(Joey)$$iXu, Gang
000012134 8560_ $$ffischerc@itam.cas.cz
000012134 8564_ $$s307303$$uhttps://invenio.itam.cas.cz/record/12134/files/S09-005.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S09-005.
000012134 962__ $$r9324
000012134 980__ $$aPAPER