Structural performance of rectangular section confined by squared spirals with no longitudinal bars influencing the confinement

Lee, Jae-Man; Kim, Young-Seek; Kim, Sang Woo; Park, Jung-Han; Kim, Kil-Hee

doi:10.1016/j.acme.2016.05.005

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…The list of researchers working in various directions could be continued. Let's mention some of them: Lloyd and Rangan [16], Bonet et al [17], Ye et al [18], Xu et al [19], Trapko and Musiał [20], Trapko [21], Hadi and Le [22], El Maddawy et al [23], Csuka and Kollar [24], Elwan and Rashed [25], Sadeghian et al [26], Eid and Paultre [27], Wu and Jiang [28], Quiertant and Clement [29], Lee et al [30], Kumar and Patel [31] and many others. Of course, the list is not complete.…”

Section: Motivation To Study the Strains In Rc Compressed Structure Mmentioning

confidence: 99%

Application of Global Optimization to Predict Strains in Rc Compressed Columns

Lechman

Stachurski

2021

Acta Polytech

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In this paper, the results of an application of global and local optimization methods to solve a problem of determination of strains in RC compressed structure members are presented. Solutions of appropriate sets of nonlinear equations in the presence of box constraints have to be found. The use of the least squares method leads to finding global solutions of optimization problems with box constraints. Numerical examples illustrate the effects of the loading value and the loading eccentricity on the strains in concrete and reinforcing steel in the a cross-section.Three different minimization methods were applied to compute them: trust region reflective, genetic algorithm tailored to problems with real double variables and particle swarm method. Numerical results on practical data are presented. In some cases, several solutions were found. Their existence has been detected by the local search with multistart, while the genetic and particle swarm methods failed to recognize their presence.

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Section: Motivation To Study the Strains In Rc Compressed Structure Mmentioning

confidence: 99%

Application of Global Optimization to Predict Strains in Rc Compressed Columns

Lechman

Stachurski

2021

Acta Polytech

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“…[14][15][16][17] Additionally, with the rapid development in technology and emerging application of high-strength concrete (HSC), ultra-high-strength concrete (UHC), high-strength reinforcement, and ultra-high-strength reinforcement, subsequent research efforts turned to the mechanical properties of HSC columns confined by high-strength lateral reinforcements. 1,[18][19][20][21][22][23][24][25][26][27] The corresponding stressstrain models for HSC columns confined by high-strength lateral reinforcements were modified according the characteristics of high-strength materials. [28][29][30][31][32][33] Besides, several experimental studies discovered that the lateral reinforcement may not yield at confined concrete compressive strength f cc .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, several typical stress–strain models for normal‐strength concrete columns confined by normal‐strength lateral reinforcement were proposed based on the test results 14–17 . Additionally, with the rapid development in technology and emerging application of high‐strength concrete (HSC), ultra‐high‐strength concrete (UHC), high‐strength reinforcement, and ultra‐high‐strength reinforcement, subsequent research efforts turned to the mechanical properties of HSC columns confined by high‐strength lateral reinforcements 1,18–27 . The corresponding stress–strain models for HSC columns confined by high‐strength lateral reinforcements were modified according the characteristics of high‐strength materials 28–33 .…”

Section: Introductionmentioning

confidence: 99%

Review of studies on concrete columns confined by lateral reinforcement under axial compression and lateral cyclic loading

Hou

Zheng

2022

Structural Concrete

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The restraint of lateral reinforcement can effectively improve the bearing capacity and deformation capacity of confined concrete columns. Generally, the behavior of confined concrete column under axial compression and lateral cyclic loading is a complex process and has been the subject of numerous studies dating from last century. This paper presents a review to summarize and discuss the investigations of concrete columns confined by lateral reinforcements under axial compression and lateral cyclic loading with the aim of obtaining a clear understanding on the mechanism and performance of confined concrete column. In this paper, a test database of confined concrete columns under axial compression and lateral cyclic loading is established, presented, and evaluated. The detailed provisions of confined concrete columns from current codes are concluded and it is found that these codes neglect the beneficial effect of lateral reinforcement on shear bearing capacity of confined concrete columns under lateral cyclic loading. Additionally, the stress–strain models and development of lateral reinforcement strain/stress in confined concrete columns under axial compression are mainly presented and discussed. Moreover, theoretical and experimental studies on seismic behavior of confined concrete columns are evaluated, including compression‐flexure calculation, shear bearing capacity, ductility, energy dissipation capacity, and other detailed requirements. Furthermore, main influential factors of confined concrete columns under axial compression and lateral cyclic loading are discussed, respectively and it is founded that the synergy work of longitudinal and lateral reinforcement, and the deformation coordinated relationship between lateral reinforcement and core concrete significantly affect the bearing capacity and deformation capacity of confined concrete columns. Therefore, further studies are suggested to optimize and quantify the strength grade combination relationship between lateral reinforcement, longitudinal reinforcement, and concrete to achieve economical design and construction.

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Behaviour of concrete confined by both steel spirals and fiber-reinforced polymer under axial load

Wei

Zhang

et al. 2018

Composite Structures

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Structural performance of rectangular section confined by squared spirals with no longitudinal bars influencing the confinement

Cited by 4 publications

References 8 publications

Application of Global Optimization to Predict Strains in Rc Compressed Columns

Application of Global Optimization to Predict Strains in Rc Compressed Columns

Review of studies on concrete columns confined by lateral reinforcement under axial compression and lateral cyclic loading

Behaviour of concrete confined by both steel spirals and fiber-reinforced polymer under axial load

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