Nonlinear seismic assessment for the post-repair response of RC bridge piers

Hwa, Lee, Do Hyung, Jeong, Hyeon Do, Kim, Byeong; Park, Joonam; Lee, Kihak; Kim, Byeong Hwa

doi:10.1016/j.compositesb.2010.12.023

Cited by 17 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A detailed description of all available elements and material models in ZeusNL [25] and validations can be found in references [25,[27][28][29][30][31][32].…”

Section: Analysis Program and Shear Representationmentioning

confidence: 99%

Cumulative Damage Evaluation of RC Bridge Piers subjected to Multiple Earthquakes

Lee

Kim

et al. 2020

Shock and Vibration

Self Cite

View full text Add to dashboard Cite

Successive earthquakes of Kocaeli and Duzce within three months indicated that even the survived lifeline structures such as bridges under the former event may have damage or collapse potential under the latter event due to their possible stiffness degradation. It is thus important that a rigorous seismic analysis of such structures should account for the effect of prior earthquake damage. For this purpose, nonlinear seismic analysis of a reinforced concrete bridge structure has been carried out under both single and multiple earthquake ground motions. Behavior and response evaluation of the bridge piers subjected to such motions have been discussed in terms of using both flexure-axial and flexure-shear-axial interaction models. Analytical results show that the stiffness degradation under multiple earthquake ground motions is more pronounced than that under single earthquake ground motion. In addition, comparison of the response without and with shear demonstrates that shear deformation is of significance. The response with shear exhibits the increase in displacement demand and decrease in lateral force carrying capacity, leading to a decrease in energy dissipation capacity. It is concluded that seismic analysis of reinforced concrete bridge structure should account for the effect of multiple earthquake ground motions to assess the demand on such structure properly.

show abstract

“…A detailed description of all available elements and material models in ZeusNL [25] and validations can be found in references [25,[27][28][29][30][31][32].…”

Section: Analysis Program and Shear Representationmentioning

confidence: 99%

Cumulative Damage Evaluation of RC Bridge Piers subjected to Multiple Earthquakes

Lee

Kim

et al. 2020

Shock and Vibration

Self Cite

View full text Add to dashboard Cite

show abstract

“…With this method, material parameters are modified to match the effect of damage and repair [146]. Lee et al and Duarte et al have tackled this challenging topic using the two-phase method and damage index method, respectively [171,172]. Lee, et al analyzed an RC bridge repaired with CFRP jackets using repair elements that had prescribed birth and death times.…”

Section: Laboratory Testingmentioning

confidence: 99%

“…Lee, et al analyzed an RC bridge repaired with CFRP jackets using repair elements that had prescribed birth and death times. Depending on the analysis time step, these repair elements would be inactive or active [171]. Duarte et al employed the damage index method by using a smeared crack model with a higher fracture energy than the undamaged concrete to simulate a beam repaired with epoxy injection and strengthened with CFRP composites.…”

Section: Laboratory Testingmentioning

confidence: 99%

Research needs concerning the performance of fiber reinforced (FR) composite retrofit systems for buildings and infrastructure

Goodwin¹,

Sattar²,

Dukes³

et al. 2019

View full text Add to dashboard Cite

NIST acknowledges the extensive input and support of the following subject matter experts: James Jirsa, Bret Lizundia, William Gold, Charles Bakis, and John Myers. Their contributions, diversity of perspectives, critical input, and help facilitating the workshop are much appreciated. Workshop participants are thanked for their valuable feedback and input on the research needs for FR composite retrofitted building performance. NIST also thanks

show abstract

“…The experimental and theoretical results show that this technique is rapid and highly effective. Lee et al [9] indicated that the main reasons for the selection of steel jackets or CFRP lie in their popular use in structural retrofit applications. Furthermore, continuous BFRP newly developed for application in civil infrastructure shows obvious advantages in mechanical and chemical properties and high ratio of performance to cost in comparison to other FRP composites as well as conventional steel materials [10].…”

Section: Introductionmentioning

confidence: 99%

Study on Repaired Earthquake-Damaged Bridge Piers under Seismic Load

Deng

Liu

Xie

et al. 2015

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The concrete bridge pier damaged during earthquakes need be repaired to meet the design standards. Steel tube as a traditional material or FRP as a novel material has become popular to repair the damaged reinforced concrete (RC) bridge piers. In this paper, experimental and finite element (FE) studies are employed to analyze the confinement effectiveness of the different repair materials. The FE method was used to calculate the hysteretic behavior of three predamaged circle RC bridge piers repaired with steel tube, basalt fiber reinforced polymer (BFRP), and carbon fiber reinforced polymer (CFRP), respectively. Meanwhile, the repaired predamaged circle concrete bridge piers were tested by pseudo-static cyclic loading to study the seismic behavior and evaluate the confinement effectiveness of the different repair materials and techniques. The FE analysis and experimental results showed that the repaired piers had similar hysteretic curves with the original specimens and all the three repair techniques can restore the seismic performance of the earthquake-damaged piers. Steel tube jacketing can significantly improve the lateral stiffness and peak load of the damaged pier, while the BFRP and CFRP sheets cannot improve these properties due to their thin thickness.

show abstract

Nonlinear seismic assessment for the post-repair response of RC bridge piers

Cited by 17 publications

References 9 publications

Cumulative Damage Evaluation of RC Bridge Piers subjected to Multiple Earthquakes

Cumulative Damage Evaluation of RC Bridge Piers subjected to Multiple Earthquakes

Research needs concerning the performance of fiber reinforced (FR) composite retrofit systems for buildings and infrastructure

Study on Repaired Earthquake-Damaged Bridge Piers under Seismic Load

Contact Info

Product

Resources

About