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...
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 ...
A Vertical Seismic Profile (VSP) is a technique in geophysics where receivers are placed at different depths in a borehole to record the time taken for sound to travel from a surface energy source. This method provides detailed data to generate a simulated seismic section of the surrounding roc...
In reality, earthquake acceleration records show high unpredictable, hence, seismic design spectra are often used to consider and estimate earthquake load in earthquake-resistant design of structures, which is named response spectrum method [1,3,13–15]. Show abstract Seismic hazard study for the ...
The method presented can be done with the information of static nonlinear behavior, natural periods, and velocity response spectrum of seismic motions; that is, any complicated nonlinear time history analysis is not required. The value estimated can be modified with the properties of strain energy ...
10.Free Vibration and Vertical Seismic Action Study of Pyramid Space Grid Roof Structures;正放四角锥网架屋盖的固有振动与竖向地震作用研究 11.Modal analysis method by response spectrum for complicated building structures under vertical earthquake action复杂建筑结构竖向地震作用的振型分解反应谱分析 ...
Horizontal-to-vertical (H/V) spectral ratio of seismic ambient noise is known as an indicator of subsurface structures. Originally, the H/V spectral ratio was proposed as a seismic response approximate of subsurface S-wave structures known as the Nakamura method1. In this method, the H/V spe...
The horizontal to vertical (H/V) curves of Martian seismic data show multi-peak characteristics between 1 and 30 Hz with the highest peak appearing at 11.7 Hz The H/V curves of continuous InSight seismic data show diurnal variation and are highly correlated with local meteorological conditions Th...
The SAFECLADDING Project was aimed at improving the connection systems between cladding panels and precast RC buildings in seismic-prone areas. Three design criteria have been assessed: isostatic, dissipative and integrated. They can be realised using different strategies, which are represented by severa...
1) horizontal and vertical seismic loads 水平和竖向地震作用2) vertical earthquake action 竖向地震作用 1. Calculation of vertical stiffness matrix of frame structures subjected to vertical earthquake action; 竖向地震作用下框架结构竖向刚度矩阵的计算 2. Modal analysis method by response spectrum for ...