|Table of Contents|

Experimental research on seismic behavior of hollow rectangular thin-walled pier confined with CFRP(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年03期
Page:
53-59
Research Field:
Publishing date:
2010-06-20

Info

Title:
Experimental research on seismic behavior of hollow rectangular thin-walled pier confined with CFRP
Author(s):
CUI Hai-qin1;  HE Shuan-hai1;  ZHAO Xiao-xin1;  KE Lu2
1. Key Laboratory for Old Bridge Detection and Reinforcement Technology of Ministry of Transportation, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Civil Engineering, Tongji University, Shanghai 200092, China
Keywords:
bridge engineering;  hollow thin-walled pier;  ductility;  seismic behavior;  CFRP;  confined
PACS:
U441.3; TU317
DOI:
-
Abstract:
For researching seismic performance of hollow thin-walled piers confined with CFRP, sever models of such piers were tested under a low cyclically reversed horizontal load,in which five models were wrapped with CFRP. The effects of reinforcement ratio of CFRP and stirrup ratio on the ultimate strength and ductility of the specimens were analyzed and discussed. The results show that: the specimens have well ductility because of ductility factors between 3.81 and 5.85 as well as flexure failure. CFRP, which have the same mechanical properties as stirrups, can effectively improve the seismic performance of hollow thin-walled pier except ultimate bearing capacity, including ductility and energy dissipation capacity. With the increase of layers of CFRP, the ductility can be effectively improved. Piers confined with two-layers CFRP have the same ductility as those with high stirrup rates. The optimal reinforcement rate of CFRP relates to structural design parameters. 5 tabs, 7 figs, 16 refs.

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Last Update: 2010-06-20