Seismic performance of frame‐bent structures subjected to near‐fault ground motions

Abstract

Abstract Reinforced concrete frame‐bent structures are one of the structural forms commonly used in industrial factory buildings. In order to study the seismic behaviour of frame‐bent structures located near fault areas, eight pulse‐like, eight non‐pulse near‐fault motions and eight far‐fault ground motions have been selected in this paper. The finite element model of a reinforced concrete frame‐bent structure was established to study seismic responses to near‐fault and far‐field ground motions. Numerical analysis results indicate that the maximum base shear of the structure under the action of near‐fault ground motion was 5.10 times that of far‐fault and 1.47 times that of non‐pulsed near‐fault ground motion; the maximum story drift angle under pulse‐like near‐fault ground motion was 3.8 times that of non‐pulse and 19.7 times that of far‐fault ground motion. Therefore, engineering designers should pay more attention to the seismic performance of frame‐bent structures under the action of near‐fault ground vibration.