[Structural engineering]

Jiulin Bai, Shuangshuang Jin, Junxian Zhao, Bohao Sun.Seismic performance evaluation of soil-foundation-reinforced concrete Tframe systems by endurance time method.Soil Dynamics and Earthquake Engineering 118 (2019) 47–51.

Keywords:Endurance time method；Seismic performance ；Soil-structure-interaction system； Reinforced concrete frame

High Lights:

The Matlab-based ETAF generation was presented.

The seismic performance soil-foundation-RC frame systems was assessed using ET method.

The feasibility and effectiveness of employing ET method to predict the seismic demands of SSI system was investigated.

Abstract:

Endurance time (ET) method is a new approach for assessing the seismic performance of structures. This paper investigated the effectiveness and accuracy of employing ET method to predict the seismic response of soil- structure-interaction (SSI) system. The Chinese code-conforming endurance time acceleration functions (ETAFs) were firstly generated. Two 5- and 10-story reinforced concrete (RC) frame structures were employed as pro- totype structures. The finite element model of soil-foundation-structure was established based on nonlinear Beam-on-Nonlinear-Winkler-Foundation (BNWF) theory. Nonlinear dynamic analyses of the structural systems subjected to 3 ETAFs and 22 ground motions were carried out. The seismic response of superstructure and foundations, and different SSI models were compared. The results indicate the ET method can predict the seismic response of SSI structural systems, with a high efficiency and accepted accuracy.

Resource：https://doi.org/10.1016/j.soildyn.2018.12.011