Seismic Response Analysis of Prestressed Concrete Rocking Frame

Applied Sciences

Zixiang Zhao¹  Xiaozu Su¹ 

[1] Department of Structural Engineering, Tongji University, Shanghai 200092, China;

关键词: prestressed concrete structure;    rocking frame;    rocking vibration;    rigid body;    collision;    energy dissipation;   

DOI  :  10.3390/app11020585

来源: DOAJ

【 摘 要 】

In order to investigate the seismic performance of prestressed concrete rocking frame (PCRF), a theoretical model based on rigid body is established for a one-story single-span PCRF. The PCRF studied in this paper has the connecting interfaces set at the column feet and at the inner faces of the beam–column joints, allowing the columns to be uplifted with the accompanying separation of the beam–column interface and rotation of the beam and column around the interface. The tendons are arranged along the centerline of the beam and columns. The connections between the beam and columns and the anchoring of columns are accomplished by prestressing the tendons. The theoretical model consists of a rigid beam, rigid columns and elastic tendons. The governing motion equation of the PCRF is derived based on the model and a numerical solution of the equation of motion is obtained. The energy dissipation of the PCRF is analyzed and the calculation method for the coefficient of restitution is derived. Time history analysis and parameter analysis of seismic response of the PCRF are conducted and the results show that the PCRF has promising seismic behavior.

【 授权许可】

Unknown