Seismic Assessment of RC Frames under Combined Horizontal and Vertical Ezcitations
Generally, for reinforced concrete structures, the horizontal component of ground motion has been considered to be the most critical for the safety design of the structures than the vertical excitation which has been generally neglected in the design and rarely studied. In near field earthquakes, the vertical acceleration of a strong motion may exceed the horizontal one and the ratio of peak vertical/horizontal acceleration may exceed the conventionally adopted value of two thirds and tends to excite the vertical vibration of floor slabs. Thus, the effect of vertical accelerations may become a concern in the seismic assessment of reinforced concrete framed structures. In this paper, we propose to present the results of a numerical study concerning the effect of combined horizontal and vertical ground motions on the seismic response of reinforced concrete frames in the non linear range. To achieve this objective, a parametric study on regular and irregular reinforced concrete frames is conducted. The results obtained indicate that the inclusion of the vertical component of an earthquake has little effect on the storey drifts and base shears but can greatly influence the axial forces in the columns especially interior columns and the vertical displacements of girders.
Reinforced concrete frames Vertical and horizontal ezcitations Non-linear analysis Fibre models
A.Kadid D.Yahiaoui
Laboratoire de Recherche en Hydraulique Appliquee, University of Batna, Algeria Department of Civil Engineering, University of Batna, Algeria
国际会议
The First Anniversary of Wenchuan Earthquake(纪念汶川地震一周年国际学术会议)
成都
英文
212-217
2009-05-10（万方平台首次上网日期，不代表论文的发表时间）