Analytical compressive stress–strain model for concrete confined with high‐strength multiple‐tied‐spiral transverse reinforcement

Li, Yizhu; Cao, Shuangyin; Jing, Deng

doi:10.1002/tal.1416

Cited by 11 publications

(9 citation statements)

References 25 publications

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“…In Fig. 5, the results obtained from the numerical models are compared with those of the Jing et al [43] and Li et al [44,45].…”

Section: Mtstr Columnmentioning

confidence: 98%

“…The behavior of MTSTR column under axial compressive load was investigated by Li et al [44,45]. The columns with square shape cross-section were tested in their research.…”

Section: Mtstr Columnmentioning

confidence: 99%

“…4. In the research attempts carried out by Jing et al [43] and Li et al [44,45], the diagrams of the axial compressive load-axial strain of the columns were obtained when the specimens were subjected to the axial compressive load (using a jack). All specimens listed in Table 3 are simulated in this study.…”

Section: Mtstr Columnmentioning

confidence: 99%

“…All specimens listed in Table 3 are simulated in this study. The strength of the concrete and reinforcements were considered based on the data presented in Table 2 [43][44][45]. Moreover, the plasticity parameters of the concrete were considered according to Table 1.…”

Section: Mtstr Columnmentioning

confidence: 99%

“…In another experimental research carried out by Li et al [44], the bearing capacity of the column with MTSTR under axial compression has been investigated. They proposed a stress-strain model for confined concrete used in the MTSTR column [45].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Numerical Comparison between Spiral Transverse RC and CFST Columns under Loads of Varying Eccentricities

Labibzadeh

Jamalpour

Jing

et al. 2019

Period. Polytech. Civil Eng.

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This paper is the first to present the results of a numerical comparison between the performances of two newly developed concrete columns namely: multi-tied spiral transverse reinforced (MTSTR) column and concrete-filled steel tube (CFST) column under eccentric compressive loads. The behavior of MTSTR columns under eccentric loads has not been studied until today and also this behavior is not compared to that of the CFST columns. The numerical models of these columns were constructed using the nonlinear finite element method and validated against the previously published experimental data in the literature. Concrete damage plasticity model and elastic-perfect plastic model were used to simulate the behavior of concrete core and steel of the columns, respectively. This provides the capability of modeling of the nonlinear large deformations of the columns. The obtained results show that the MTSTR columns can provide greater load carrying capacity, ductility, and energy absorption with slightly lower initial stiffness than the CFST columns under the same eccentricities. For instance, the load-carrying capacity of MTSTR column is 18 percent greater than that of the CFST column when the load eccentricity is 100 mm. In case of 100 mm eccentricity, the ductility of the improved version of the MTSTR column proposed in this study is 30 percent greater than CFST one.

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“…In Fig. 5, the results obtained from the numerical models are compared with those of the Jing et al [43] and Li et al [44,45].…”

Section: Mtstr Columnmentioning

confidence: 98%

“…The behavior of MTSTR column under axial compressive load was investigated by Li et al [44,45]. The columns with square shape cross-section were tested in their research.…”

Section: Mtstr Columnmentioning

confidence: 99%

Section: Mtstr Columnmentioning

confidence: 99%

Section: Mtstr Columnmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Numerical Comparison between Spiral Transverse RC and CFST Columns under Loads of Varying Eccentricities

Labibzadeh

Jamalpour

Jing

et al. 2019

Period. Polytech. Civil Eng.

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Steel and Composite Joints for MRFs in Moderate Seismicity: Experimental and Numerical Program

et al. 2022

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Until recently, the design of steel and composite structures for the relatively low seismicity of Germany was predominantly performed in accordance with EN 1993-1-1 [9] and EN 1994-1 [10]. This was also allowed due to the low demands on joints generated by seismic loads. Alternatively, the application of capacity design in accordance with the European seismic code often led to less economical outcomes. In this context, it became common practice to design steel and composite structures considering a low ability of seismic energy dissipation (q ≤ 1.5). However, the seismic risk in moderate-to-low seismic regions is not negligible. Risk factors include increased density of the population and high industrialisation of many regions in Germany. Moreover, civil engineering design offices are generally not very familiar with seismic design. Another risk is the underestimation of the seismic hazard in Germany demonstrated by a state-of-the-art probabilistic seismic hazard assessment [11]. Consequently, new seismic hazard maps were introduced in the updated version of German National Annex DIN-EN-1998-1/NA [12]. According to these maps, the relevance of the seismic hazard in Germany had increased due to expanded seismic areas and to higher spectral accelerations. Because of this, seismic action should not be disregarded in the design of steel and composite structures. This is also of particular importance to the design of beam-to-column connections, which are regularly configured in accordance with the German catalogue of typical connections "Standardised Joints in Steel Structures to DIN EN 1993-1-8" [13] and not with EN 1998-1 [14]. The main aim of

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Steel and composite joints with dissipative connections for MRFs in moderate seismicity – Experimental and numerical programs

et al. 2023

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Owing to the new rules of the German National Annex to EN 1998-1, the relevance of the seismic action has increased, materialising in extended seismic areas and higher spectral accelerations. This may lead to seismic loading being decisive on the design of steel and composite frames. However, the demand is lower in Germany than in other seismic areas. Consequently, these challenges are addressed in an ongoing German national research project, by developing joints with dissipative connections, classified as semi-rigid and partial-strength, for steel and composite frames that could allow for the use of behaviour factors in the range of 1.5 to 3. The development started with typical connections from the German catalogue, designed to withstand static loads in the elastic range, followed by performance and detailing improvements. Developments (e.g., increase in sagging/hogging bending: 125 %/18 % of steel joints and 70 %/40 % of partially composite joints) resulted from pretest finite element analyses (FEA) on joints and frame models. Improvements to joint detailing were made according to the provisions of the newest draft of Eurocode 8. The optimised joints were integrated in frame specimens, which are currently being tested under monotonic and cyclic loads at RWTH-Aachen University. This article introduces the developed joint solutions, describes the experimental and numerical programs and presents the monotonic response of frame specimens based on the results of FEA, as well as the main conclusions.

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Analytical compressive stress–strain model for concrete confined with high‐strength multiple‐tied‐spiral transverse reinforcement

Cited by 11 publications

References 25 publications

A Numerical Comparison between Spiral Transverse RC and CFST Columns under Loads of Varying Eccentricities

A Numerical Comparison between Spiral Transverse RC and CFST Columns under Loads of Varying Eccentricities

Steel and Composite Joints for MRFs in Moderate Seismicity: Experimental and Numerical Program

Steel and composite joints with dissipative connections for MRFs in moderate seismicity – Experimental and numerical programs

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