Through considering reinforcement-soil and faceplate-soil and faceplate-faceplate contact elements,finite element model of reinforced retaining walls including soil elements,contact elements,faceplate elements and reinforcement elements was established,a numerical simulation study of reinforced retaining wall by ANSYS was conducted to investigate the influence of frequency content and the peak amplitude of the seismic load to the behavior of these structures under seismic load conditions,and some qualitative conclusions about their dynamic behavior were gained.
By use of finite elements to model the dam body and of discontinuous contact elements to model the abutment, the abutment residual deformation and dam stress of Xiaowan arch dam under the design seismic load are calculated.
The result indicates that the distribution of strain rate caused by seismic loading varies at the dam surface and significantly affects the dynamic response as well as the safety evaluation of the dam.
By using the nonlinear static analysis, retrofitted buildings seismic performances under lateral seismic load were compared with each other.
System failure probability is evaluated by means of the covariance analysis of a frame subject to a seismic load represented by a nonstationary modulated Kanai-Tajimi stochastic process.
For the structural designer, ground acceleration or velocity is the most suitable parameter for calculating the seismic load acting on a building.
1.Results of the investigation show the marked effect of foundation yielding on the modes and frequencies of natural vibrations of structure and accordingly the seismic load on concrete gravity and earth dams.
Consideration of the nonlinear behavior of the soils under an intense seismic load requires additional investigations.
However, under dynamic or earthquake loading, a relatively small amount of energy transferred across perpendicular directions is accumulated, which may result in significant enlargement of the structural response.
A semi-empirical formula for evaluating residual strain of soils under earthquake loading
A new semi-empirical formula for evaluating the residual strain of soils under earthquake loading is presented in this paper based on the incremental method and the increment model proposed by the authors.
For excitation of the random earthquake loading, the results calculated by the new formula are compared to the results obtained by dynamic triaxial tests.
Ductility demands on buckling-restrained braced frames under earthquake loading