Shear-critical reinforced concrete columns under various loading rates

Witarto, Witarto; Liang, Lu; Roberts, Rachel Howser; Mo, Y. L.; Li, Xilin

doi:10.1007/s11709-014-0083-y

Cited by 9 publications

(8 citation statements)

References 11 publications

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“…The consistent research findings are concluded that as the loading rate increases, both the tensile strength and compressive strength of concrete, the yield strength and ultimate strength of reinforcement are magnified, and the elastic modulus and the strain corresponding to the compressive strength of concrete are also affected by the loading rate [2]. As for structural members consisting of RC materials, such as columns [3][4][5][6], beams [7][8][9][10][11][12][13][14], shear walls [15][16][17][18][19] and joints [20][21][22][23][24][25], changes in mechanical behaviors to different degrees are observed for specimens under various loading rates, namely the dynamic effect at the member level. Different failure patterns of RC structural members could be observed in seismic hazards, as shown in Figure 2.…”

Section: Introductionmentioning

confidence: 54%

“…In general, the failure modes and crack patterns of RC structural members can be directly observed with naked eyes [5,32,36,58]. Moreover, for a few dynamic loading test that the crack development was not feasibly measure, the high performance measuring equipment has been employed by researchers as alternatives.…”

Section: Measurement Methods For Dynamic Loading Testmentioning

confidence: 99%

“…In most of the available dynamic tests, the hysteretic curve of force-displacement can be acquired by measuring the bearing capacity and displacement of structural members in the process of cyclic loading; and the degradation of bearing capacity and stiffness, the seismic damage and the energy dissipation capacity can be further derived by analyzing the test data of hysteretic loops [3,20,33,57]. By using the self-developed carbon nanofiber aggregate (CNFA) as an internal sensor, which could well capture the transient changes of structural force and stiffness with almost no time delay, WITARTO et al [5] detected the seismic damage of RC column specimens under various loading rates.…”

Section: Measurement Methods For Dynamic Loading Testmentioning

confidence: 99%

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Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Li¹,

Gao²,

Li³

et al. 2023

Preprint

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In this paper, the research progress on dynamic behaviors of RC structural members is reviewed from experimental, theoretical and numerical perspectives. Firstly, the basic overview, measurement methods, main conclusions and current limitations of available dynamic loading tests are presented. Then the theoretical studies on the dynamic constitutive models of RC materials, the dynamic increase factor (DIF) model for concrete and reinforcing steel and the proposed modified models of dynamic behavior parameter at the structural member level are summarized. Finally, the available modelling approach and the method for incorporating the dynamic effect in numerical simulation of RC structures are reviewed. Moreover, a brief introduction is made to the dynamic hysteretic model established on the experimental data, which provides an alternative approach to consider the dynamic effect beside the commonly used DIF method. This paper provides valuable reference for experimental studies and numerical simulations on the dynamic behaviors of RC structures, and also puts forward some issues that need to be solved in the future research works..

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Section: Introductionmentioning

confidence: 54%

Section: Measurement Methods For Dynamic Loading Testmentioning

confidence: 99%

Section: Measurement Methods For Dynamic Loading Testmentioning

confidence: 99%

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Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Li¹,

Gao²,

Li³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Finally, negligible effect of the installation method on the sensing capacity was observed. The influence of loading rate on the sensing capacity of CSCs doped with CNFs was investigated by Witarto and his co-authors [78]. 25.4 mm wide cubic sensors, equipped with four copper mesh electrodes, were installed in critical regions of four full-scale RC columns designed to fail in shear.…”

Section: Steel Reinforcement Covered With Epoxy Resinmentioning

confidence: 99%

Applications of Cement-Based Smart Composites to Civil Structural Health Monitoring: A Review

2021

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In recent years, cement-based smart composites (CSCs) doped with conductive filler have attracted increasing research interest because of their high potentiality as self-sensing materials for civil Structural Health Monitoring (SHM) applications. Nevertheless, several issues are still open and need further studies. This paper presents an extensive state-of-the-art in which investigations on CSCs are summarized and critically revised, with the primary aim of outlining the main limits and development points. The literature review first addresses in detail several specific issues related to fabrication and operation as sensing elements of CSC samples. State-of-the-art applications of CSCs to SHM of reduced-, medium- and full-scale structural prototypes are extensively reviewed afterwards, resulting in a database useful to critically revise the main trends and open issues of the research in this field.

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“…Such studies have led to the proposal of a damage assessment criterion for distinguishing different failure modes, i.e., flexural, shear, and axial failures [12]. Witarto et al [13] conducted an experimental study on shear behavior of four reinforced concrete columns with respect to different cyclic loading rate and Sharifi and Maghsoudi [14] experimentally studied the flexural behavior of six heavily steel reinforced beams with high-strength concrete. In addition, some numerical studies have been carried out regarding shearflexural behavior and eventually the collapse response of reinforced concrete elements and structures [15,16].…”

Section: Introductionmentioning

confidence: 99%

Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural, shear, or axial failure modes

Kakavand

Allahvirdizadeh

2019

Front. Struct. Civ. Eng.

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Capacity of components subjected to earthquake actions is still a widely interesting research topic. Hence, developing precise tools for predicting drift capacities of reinforced concrete (RC) columns is of great interest. RC columns are not only frequently constructed, but also their composite behavior makes the capacity prediction a task faced with many uncertainties. In the current article, novel empirical approaches are presented for predicting flexural, shear and axial failure modes in RC columns. To this aim, an extensive experimental database was created by collecting outcomes of previously conducted experimental tests since 1964, which are available in the literature. It serves as the basis for deriving the equations for predicting the drift capacity of RC columns by different regression analyses (both linear with different orders and nonlinear). Furthermore, fragility curves are determined for comparing the obtained results with the experimental results and with previously proposed models, like the ones of ASCE/SEI 41-13. It is demonstrated that the proposed equations predict drift capacities, which are in better agreement with experimental results than those computed by previously published models. In addition, the reliability of the proposed equations is higher from a probabilistic point of view.

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Shear-critical reinforced concrete columns under various loading rates

Cited by 9 publications

References 11 publications

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Applications of Cement-Based Smart Composites to Civil Structural Health Monitoring: A Review

Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural, shear, or axial failure modes

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