000010252 001__ 10252
000010252 005__ 20141205155707.0
000010252 04107 $$aeng
000010252 046__ $$k2008-10-12
000010252 100__ $$aHosseini, Mahmood
000010252 24500 $$aStudying the Effect of Earthquake Excitation Angle on the Internal Forces of Steel Building’s Elements by Using Nonlinear Time History Analyses

000010252 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010252 260__ $$b
000010252 506__ $$arestricted
000010252 520__ $$2eng$$aIt has been claimed by many researchers that the direction of dominant excitation might be none of the main directions of the building axes. However, the researches performed in this regard are mostly limited to buildings with elastic behavior. In this paper two 5-story steel buildings with moment frames, one with square and the other with rectangular plan, have been designed base on the seismic design code for steel buildings, and then have been analyzed by a Nonlinear Time History Analysis (NLTHA) program using simultaneously the accelerograms of two horizontal components of some earthquakes. The used earthquakes are almost of the same PGA level, but have different frequency contents. A set of values from 0 to 90 degrees, with an increment of 10 degrees, have been used for angle of excitation. Buildings’ columns have been divided into three main categories, including corner, side, and internal columns, and axial force and bending moment values in different columns, and moment values in girders, as well as the total base shear forces of the buildings, have been investigated in all cases. The results show that the columns’ axial forces may exceed the ordinary cases up to 50% by varying the angle of excitation, and that this variation is more in buildings with rectangular plans. Furthermore, each column gets its maximum axial force with a specific angle of excitation, which is not 0 or 90 necessarily, and is different from column to column, and that specific angle is not the same for different earthquakes.

000010252 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010252 653__ $$aAngle of Excitation, Columns’ Axial Forces, Corner and Side Columns.

000010252 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010252 720__ $$aHosseini, Mahmood$$iSalemi, Ali
000010252 8560_ $$ffischerc@itam.cas.cz
000010252 8564_ $$s183927$$uhttps://invenio.itam.cas.cz/record/10252/files/05-01-0389.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0389.
000010252 962__ $$r9324
000010252 980__ $$aPAPER