REHABILITATION MECHANISM STUDY OF BEAM-TO-COLUMN CONNECTIONS FOR SELF-CENTERING POST-TENSIONED PRECAST FRAME

Cai Xiaoning; Meng Shaoping; Sun Weiwei

Volume 44 Issue 09

Jan. 2015

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Cai Xiaoning, Meng Shaoping, Sun Weiwei. REHABILITATION MECHANISM STUDY OF BEAM-TO-COLUMN CONNECTIONS FOR SELF-CENTERING POST-TENSIONED PRECAST FRAME[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(09): 56-61.

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Cai Xiaoning, Meng Shaoping, Sun Weiwei. REHABILITATION MECHANISM STUDY OF BEAM-TO-COLUMN CONNECTIONS FOR SELF-CENTERING POST-TENSIONED PRECAST FRAME[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(09): 56-61.

Cai Xiaoning, Meng Shaoping, Sun Weiwei. REHABILITATION MECHANISM STUDY OF BEAM-TO-COLUMN CONNECTIONS FOR SELF-CENTERING POST-TENSIONED PRECAST FRAME[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(09): 56-61.

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REHABILITATION MECHANISM STUDY OF BEAM-TO-COLUMN CONNECTIONS FOR SELF-CENTERING POST-TENSIONED PRECAST FRAME

Publish Date: 2014-09-20

Abstract

Abstract

Based on the requirement of quick rehabilitation，a new kind of the self-centering post-tensioned precast connection ( named PTED) was proposed． The tests of the PTED frame connections were carried out． The damage and mechanical characteristics of the connections under low reversed cyclic loading were studied． The results showed that the damage concentrates in the steel angles，the connections have the ability of self-centering and the residual deformation is small when unloading． Based on the self-centering capability of the PTED connection， the rehabilitation mechanism and the repair method were proposed，that is，after the earthquake the joint can returned to it’s original position utilizing the self-centering capability of the post-tensioned steel and then just replace the damaged angle． The tests of the repaired PTED connection under low reversed were carried out and the repaired method was verified． The results showed that the seismic capacity of the repaired joint was basically the same as the original one．
- self-centering,
- rehabilitation,
- steel angle,
- prestress,
- low reversed cyclic loading

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