Optimal seismic retrofit method for reinforced concrete columns with wing walls

2020 ◽  
Vol 210 ◽  
pp. 110390
Author(s):  
Yousok Kim ◽  
Su A. Lim ◽  
Hyo Seon Park
Keyword(s):  
Reinforced Concrete ◽  
Concrete Columns ◽  
Seismic Retrofit ◽  
Reinforced Concrete Columns ◽  
Wing Walls

Retrofit of Concrete Columns with Inadequate Lap Splices by the Use of Rectangular Steel Jackets

1996 ◽  
Vol 12 (4) ◽  
pp. 693-714 ◽  
Author(s):  
Riyad S. Aboutaha ◽  
Michael D. Engelhardt ◽  
James O. Jirsa ◽  
Michael E. Kreger
Keyword(s):  
Reinforced Concrete ◽  
Large Scale ◽  
Concrete Columns ◽  
Seismic Retrofit ◽  
Design Guidelines ◽  
Reinforced Concrete Frame ◽  
Reinforced Concrete Columns ◽  
Lap Splice ◽  
Concrete Frame ◽  
Anchor Bolts

This paper describes an experimental research program on the use of rectangular steel jackets for seismic retrofit of non-ductile reinforced concrete frame columns. Eleven large scale columns were tested to examine the effectiveness of various types of steel jackets for improving the ductility and strength of columns with an inadequate lap splice in the longitudinal reinforcement. Response of the columns before and after being strengthened with steel jackets was examined. Several types of steel jackets were investigated, including rectangular solid steel jackets with and without adhesive anchor bolts. The test results indicate that a thin rectangular steel jacket combined with adhesive anchor bolts can be a highly effective retrofit measure for reinforced concrete columns with an inadequate lap splice. Design guidelines for the use of rectangular steel jackets as a seismic retrofit for non-ductile reinforced concrete columns are presented.

Ductile fiber wrapping for seismic retrofit of reinforced concrete columns

2015 ◽  
Vol 1 (1) ◽  
pp. 37-46 ◽  
Author(s):  
Donguk Choi ◽  
S. Vachirapanyakun ◽  
S.-Y. Kim ◽  
S.-S. Ha
Keyword(s):  
Reinforced Concrete ◽  
Concrete Columns ◽  
Seismic Retrofit ◽  
Reinforced Concrete Columns

Study on Bearing Capacity of Reinforced Concrete Columns Strengthened by Adding Wing Walls

2012 ◽  
Vol 446-449 ◽  
pp. 561-565 ◽  
Author(s):  
Yu Zhang ◽  
Jun Guo ◽  
Lu Cheng ◽  
Rui Liu
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Columns ◽  
Engineering Practice ◽  
Lateral Stiffness ◽  
Engineering Technology ◽  
Reinforced Concrete Columns ◽  
Normal Section ◽  
Reference Information ◽  
Wing Walls

Wenchuan Earthquake has caused substantial damage to reinforced concrete columns, in order to improve their lateral stiffness, wing walls are added to repair and strengthen the columns. Based on engineering practice, the mechanical calculations of normal section bearing capacity on damaged reinforced concrete columns strengthened by wing walls have been conducted, and based on the N-M curves of various special-shaped columns, the influence laws of different azimuths and different axial compression ratios on bearing capacity of normal section have been analyzed, therefore mechanical properties of special-shaped sections have been obtained, which provides reference information for engineering technology.

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