Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics

Laijun Liu; Song Lei; Fangwen Wu; Weiwei Lin; Kai Peng; Xiangyan Fan

doi:10.3390/ma15217443

Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics

Laijun Liu
, Song Lei^*
, Fangwen Wu
, Weiwei Lin
, Kai Peng
, Xiangyan Fan

^*Corresponding author for this work

Chang'an University

Research output: Contribution to journal › Article › Scientific › peer-review

8 Citations (Scopus)

62 Downloads (Pure)

Abstract

Earthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining traffic lines for emergency rescue work after earthquakes. In this study, an improved rapid repair method was developed to restore the bearing capacity of a damaged precast column after earthquake damage. A cyclic loading test was performed to simulate the seismic loading. The original column and the repaired column were both tested. The test results showed that the bearing capacity of the repaired columns was increased by 8%, and the energy dissipation capacity was 53% higher than that of the original column. The ductility decreased because the test for the repaired specimen ended in advance. The initial stiffness of the repaired columns was reduced, but the stiffness was significantly developed in the later loading stage. The rapid repair method proposed in this study exhibited an excellent effect on restoring the seismic resistance of the damaged columns.

Original language	English
Article number	7443
Number of pages	17
Journal	Materials
Volume	15
Issue number	21
DOIs	https://doi.org/10.3390/ma15217443
Publication status	Published - Nov 2022
MoE publication type	A1 Journal article-refereed

Funding

This research was funded by the Shaanxi Province Science and Technology Department, grant number 2022JZ-32, and Chang’an University, grant number 300102212212. This paper was written during the academic visit of the second author to Aalto University in Finland, financially supported by the China Scholarship Council.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 11 Sustainable Cities and Communities

Keywords

CFRP fabrics
cyclic load
precast column
rapid repair
seismic performance

Access to Document

10.3390/ma15217443Licence: CC BY

materials-15-07443Final published version, 3.64 MBLicence: CC BY

Cite this

@article{157aaffd791c4fcbbf5a14d45d188275,

title = "Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics",

abstract = "Earthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining traffic lines for emergency rescue work after earthquakes. In this study, an improved rapid repair method was developed to restore the bearing capacity of a damaged precast column after earthquake damage. A cyclic loading test was performed to simulate the seismic loading. The original column and the repaired column were both tested. The test results showed that the bearing capacity of the repaired columns was increased by 8\%, and the energy dissipation capacity was 53\% higher than that of the original column. The ductility decreased because the test for the repaired specimen ended in advance. The initial stiffness of the repaired columns was reduced, but the stiffness was significantly developed in the later loading stage. The rapid repair method proposed in this study exhibited an excellent effect on restoring the seismic resistance of the damaged columns.",

keywords = "CFRP fabrics, cyclic load, precast column, rapid repair, seismic performance",

author = "Laijun Liu and Song Lei and Fangwen Wu and Weiwei Lin and Kai Peng and Xiangyan Fan",

note = "Funding Information: This research was funded by the Shaanxi Province Science and Technology Department, grant number 2022JZ-32, and Chang{\textquoteright}an University, grant number 300102212212. This paper was written during the academic visit of the second author to Aalto University in Finland, financially supported by the China Scholarship Council. Publisher Copyright: {\textcopyright} 2022 by the authors.",

year = "2022",

month = nov,

doi = "10.3390/ma15217443",

language = "English",

volume = "15",

journal = "Materials",

issn = "1996-1944",

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TY - JOUR

T1 - Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics

AU - Liu, Laijun

AU - Lei, Song

AU - Wu, Fangwen

AU - Lin, Weiwei

AU - Peng, Kai

AU - Fan, Xiangyan

N1 - Funding Information: This research was funded by the Shaanxi Province Science and Technology Department, grant number 2022JZ-32, and Chang’an University, grant number 300102212212. This paper was written during the academic visit of the second author to Aalto University in Finland, financially supported by the China Scholarship Council. Publisher Copyright: © 2022 by the authors.

PY - 2022/11

Y1 - 2022/11

N2 - Earthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining traffic lines for emergency rescue work after earthquakes. In this study, an improved rapid repair method was developed to restore the bearing capacity of a damaged precast column after earthquake damage. A cyclic loading test was performed to simulate the seismic loading. The original column and the repaired column were both tested. The test results showed that the bearing capacity of the repaired columns was increased by 8%, and the energy dissipation capacity was 53% higher than that of the original column. The ductility decreased because the test for the repaired specimen ended in advance. The initial stiffness of the repaired columns was reduced, but the stiffness was significantly developed in the later loading stage. The rapid repair method proposed in this study exhibited an excellent effect on restoring the seismic resistance of the damaged columns.

AB - Earthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining traffic lines for emergency rescue work after earthquakes. In this study, an improved rapid repair method was developed to restore the bearing capacity of a damaged precast column after earthquake damage. A cyclic loading test was performed to simulate the seismic loading. The original column and the repaired column were both tested. The test results showed that the bearing capacity of the repaired columns was increased by 8%, and the energy dissipation capacity was 53% higher than that of the original column. The ductility decreased because the test for the repaired specimen ended in advance. The initial stiffness of the repaired columns was reduced, but the stiffness was significantly developed in the later loading stage. The rapid repair method proposed in this study exhibited an excellent effect on restoring the seismic resistance of the damaged columns.

KW - CFRP fabrics

KW - cyclic load

KW - precast column

KW - rapid repair

KW - seismic performance

UR - https://www.scopus.com/pages/publications/85141824170

U2 - 10.3390/ma15217443

DO - 10.3390/ma15217443

M3 - Article

AN - SCOPUS:85141824170

SN - 1996-1944

VL - 15

JO - Materials

JF - Materials

IS - 21

M1 - 7443

ER -

Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics

Abstract

Funding

UN SDGs

Keywords

Access to Document

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