Fragility Analysis of RC Frame Structures Subjected to Obliquely Incident Seismic Waves

Liquid storage tanks are often arranged in rows with small spacing in practical applications, which may cause mutual influence under earthquake action and even aggravate the seismic damage of liquid storage tanks. Adding the vibration barrier (ViBa) into the foundation between the adjacent liquid storage tanks forms a new type of seismic control method. Considering important factors such as liquid–solid–soil coupling, liquid sloshing behavior, and structure–soil–structure interaction (SSSI), a refined 3D numerical calculation model of the adjacent liquid storage tanks with three ViBas is established by ADINA. The influence of seismic wave incidence angle on the seismic responses of the liquid storage tanks and the control effect of ViBa are studied, and the parameter influence analysis is carried out. The results show that the ViBa significantly control the seismic responses and liquid sloshing wave height of the adjacent liquid storage tanks, and the damping ratio of the liquid sloshing wave height is between 30% and 40%. When the seismic incidence angle is between 30[Formula: see text] and 60[Formula: see text], the dynamic responses of the liquid storage tank is larger. With the increase of the seismic incidence angle, the control effect of the ViBa on the effective stress, hoop stress, axial compressive stress, and liquid pressure first increases and then decreases. When the liquid storage tank is close to full state, the control effect is most significant at an incidence angle of 60[Formula: see text], and the control effect of the ViBa on the liquid storage tank with medium height-diameter ratio is the best.

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Seismic Analysis of High-Speed Railway Irregular Bridge-Track System under Obliquely Incident Waves

Zhu

Tang

2022

IABSE Congress Reports

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<p>This study mainly explores the influence of different seismic incident angles on the damage of irregular bridge track systems in complex topography regions. The seismic ground motions of the V-shaped canyon site were simulated through SH wave theoretical analysis. Nonlinear seismic response analyses of irregular simply supported railway bridge–track systems were performed under the different incident angles of seismic (0°~ 60°). The effects of different seismic incident angles on the seismic response of the bridge-track system are analyzed. The results show that the seismic displacement responses of piers top, transverse movable bearings, and fasteners are significantly different under different seismic incident angles, and the unfavorable seismic incident angle is 60°. Underestimate the maximum 37 % seismic displacement response of pier top, transverse movable bearings, and fastener without considering the influence of incident angle.</p>

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Fragility Analysis of RC Frame Structures Subjected to Obliquely Incident Seismic Waves

Cited by 4 publications

References 17 publications

Seismic wave-field modeling of 3D irregularities in layered half-space under P-, S-, and Rayleigh waves with arbitrary incident azimuth

Seismic wave-field modeling of 3D irregularities in layered half-space under P-, S-, and Rayleigh waves with arbitrary incident azimuth

Influence of Seismic Wave Incidence Angle on Dynamic Responses and Vibration Control of Adjacent Liquid Storage Tanks

Seismic Analysis of High-Speed Railway Irregular Bridge-Track System under Obliquely Incident Waves

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