Findings The results show that the vertical mode-superposition response spectrum method is close to the time history analysis method. The floor has strong seismic performance, and the deflection and internal force are not large under vertical seism. The vertical seismic action suggested that 10% of...
In this paper, the research on the vertical seismic response which is carried out in our institute, is summarized. The research works are the analysis on the seismic response of highrise structures and tall buildings to vertical ground motion and the vertical seismic response spectrum. 关键词: ...
The reflectivity trace is theδ-pulse response of a system of horizontal layers, with acousticdiscontinuities in the vertical direction (1D). To take into account the changes incurred by the fictitious signal during its propagation within a layered medium, a seismic wavelet is convolved with the ...
1.The frame- tube structure is unfolded as plane frame and vertical seismic action is calculated according to the method of lumped mass.本文推导了带刚域杆件考虑轴压力效应和剪切变形时的单元刚度方程,将框筒结构展开为等效平面框架,按集中质量模型计算竖向地震作用,然后,分别计算了设防烈度 7度、 8度和 ...
The result remarks the conclusion that, a building structure with stiffness and setback irregularity provides instability during seismic loading. To control the instability, a proportionate amount of stiffness is beneficial in RC building.Keywords: Response spectrum analysis, Storey displacement, Storey ...
vertical response spectrumdownhole arrayRecent research clearly shows the importance of including the vertical component of earthquake ground motion in seismic analysis and design. In addition, pioneering studies [e.g., Elnashai and Papazoglou (1997)] have explored and documented the characteristics of ...
The results showthat both the peak value ratio and response spectrum ratio are larger than the 2/3 value prescribed in existing seismic codes,and the relationship between the vertical and horizontal ground motions is comparatively intricate. In addition, the effectof the near-fault ground motions ...
andbyusingtheresponsespectrummethod,theinfluencelawforP-Δeffectof thenewcolumn-plate-typedhighpiersunderverticalearthquakeactionisanalyzedemphatically,atthesametime,the stabilityindexisintroducedtoquantitativelyanalyzetheamplificationeffectofP-Δeffect.Theresultsshowthatafter takingintoaccounttheverticalseismicactionandP...
2) Vertical seismic action 竖向地震作用 1. The frame- tube structure is unfolded as plane frame and vertical seismic action is calculated according to the method of lumped mass. 本文推导了带刚域杆件考虑轴压力效应和剪切变形时的单元刚度方程,将框筒结构展开为等效平面框架,按集中质量模型计算竖向...
3) Vertical seismic action 竖向地震作用 1. The frame- tube structure is unfolded as plane frame and vertical seismic action is calculated according to the method of lumped mass. 本文推导了带刚域杆件考虑轴压力效应和剪切变形时的单元刚度方程,将框筒结构展开为等效平面框架,按集中质量模型计算竖向地震作...