EFFECT OF GROUND COLUMN FAILURE TO INSTANTANEOUS DYNAMIC OF FRAME STRUCTURE
In this paper, the explicit analysis of ANSYS finite element methods was used to simulate the instantaneous response of a high rise building with a sudden invalidation of side columns of the ground floor. Several parameters such as: damper coefficients, structure mass, lateral stiffness and initial static load were taking into account in this analysis while calculating the removing indexes and horizontal displacement Conclusions can be drawn from the calculation results that the instantaneous horizontal displacement of the structure fluctuates around static result and converges to the static displacement because of the influence of damper. The maximum displacement of the instantaneous response is about 50％ bigger than that of the static one. The effect of initial static load on the instantaneous response makes the amplitude of vibration of horizontal and vertical displacement 80％ bigger than that without the effect. The effect of initial static load on the instantaneous response is related to the stiffness, structure mass and damper coefficients. The smaller the stiffness is and the bigger the mass is, the smaller the effect of static load to the maximum displacement.
instantaneous dynamic analysis progressive collapse initial static load removing indezes
Guang-Zheng Xia Dong-Tao Xia
School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430064, P.R. Chi School of Civil Engineering, Dalian University of Science and Technology, Dalian 210053, P.R. China
国际会议
广州
英文
1397-1401
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）