Experimental Study on Ultrasonic Monitoring of Splitting Failure in Reinforced Concrete

Rucka, Magdalena; Wilde, Krzysztof

doi:10.1007/s10921-013-0191-y

Cited by 50 publications

(35 citation statements)

References 20 publications

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“…Moreover, an DAMAGE ANALYSIS OF TENSIONING CABLE ANCHORAGE ZONE OF A BRIDGE...application of structural health monitoring, as in e.g. [7] or [10], could give an answer to whether or not the numerical estimations are correct.…”

Section: Comparison Of Fem Results and In Situ Crack Patternsmentioning

confidence: 99%

Damage Analysis of Tensioning Cable Anchorage Zone of a Bridge Superstructure, Using CDP Abaqus Material Model

Chróścielewski¹,

Miśkiewicz²,

Pyrzowski³

et al. 2017

Archives of Civil Engineering

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Numerical analysis of the tensioning cables anchorage zone of a bridge superstructure is presented in this paper.It aims to identify why severe concrete cracking occurs during the tensioning process in the vicinity of anchor heads. In order to simulate the tensioning, among others, a so-called local numerical model of a section of the bridge superstructure was created in the Abaqus Finite Element Method (FEM) environment. The model contains all the important elements of the analyzed section of the concrete bridge superstructure, namely concrete, reinforcement and the anchoring system. FEM analyses are performed with the inclusion of both material and geometric nonlinearities. Concrete Damage Plasticity (CDP) constitutive relation from Abaqus is used to describe nonlinear concrete behaviour, which enables analysis of concrete damage and crack propagation. These numerical FEM results are then compared with actual crack patterns, which have been spotted and inventoried at the bridge construction site.

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Section: Comparison Of Fem Results and In Situ Crack Patternsmentioning

confidence: 99%

Damage Analysis of Tensioning Cable Anchorage Zone of a Bridge Superstructure, Using CDP Abaqus Material Model

Chróścielewski¹,

Miśkiewicz²,

Pyrzowski³

et al. 2017

Archives of Civil Engineering

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“…For greater depth, other methods should be used. 20 , 21 for example: acoustic waves are widely used 22 . …”

Section: Estimate the Water Level Using Terrestrial Laser Scanningmentioning

confidence: 99%

Implementation of Spatial Information for Monitoring and Analysis of the Area Around the Port Using Laser Scanning Techniques

Bobkowska

Inglot

Mikušová

et al. 2017

Polish Maritime Research

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Nowadays, maritime infrastructure is heavily exploited, which requires monitoring. The article presents the implementation of spatial information which are point clouds for monitoring and analysis of the area around the port (buildings and wharves). For this study, point clouds coming from terrestrial (TLS) and airborne laser scanning (ALS), each of them having different accuracy, were used. An important part of the analysis was the integration of the two data sources. Through integration, the acquisition of information on areas not covered by the measurement in the presented case, one of the methods was possible for use (e.g. the roofs in case of TLS, or the lack of some of the walls of buildings in case of ALS).Another aspect was to use this data. Measurement of the shape and geometry of objects was executed. Additionally, the planeness analysis of individual elements of port infrastructure has been carried out. An interesting analysis was to determine the water level, based on relation to specific characteristics of the light reflectance.

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“…The advantage of wave propagation-based methods is that they may be used in automatic structural health monitoring (SHM) systems. It has been demonstrated that wave propagation methods can be efficiently applied in monitoring of the strain changes in reinforced concrete during the process of damage development [10][11][12][13]. Wave propagation signals collected during an experiment conducted on concrete structures are characterized by a greater degree of complexity than for steel thin rods [14] or plates [15] because of the solid geometry of typical concrete element.…”

Section: Introductionmentioning

confidence: 99%

A novel formulation of 3D spectral element for wave propagation in reinforced concrete

Rucka

Witkowski²,

Chróścielewski³

et al. 2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The paper deals with numerical simulations of wave propagation in reinforced concrete for damage detection purposes. A novel formulation of a 3D spectral element was proposed. The reinforcement modelled as the truss spectral element was embedded in the 3D solid spectral finite element. Numerical simulations have been conducted on cuboid concrete specimens reinforced with two steel bars. Different degradation models were considered to study the real behaviour of bended beams. In wave propagation modelling the spectral element method (SEM) plays an important role [16]. The SEM method is based on the high-order finite elements, usually of class C 0 . As a special feature, the elements have their nodes distributed both in physical space and in parent elements according to the Gauss-Lobatto-Legendre quadrature rule. As a consequence, it is possible to obtain a diagonal mass matrix at the element level which in turn, when appropriately taken into account, leads to fast and efficient time marching scheme. A multitude of aspects pertaining to SEM, especially for modelling of seismic waves (e.g. [17,18]) as well as for wave propagation for SHM purposes (e.g. [19]), have been already discussed. Spectral elements have been also developed for structural type finite elements like rods, beams or plates (e.g. [14,15,[20][21][22][23][24][25][26][27]), with the attention paid to theoretical aspects of wave propagation phenomena. In paper [28], 3-dimensional spectral elements have been presented, with application to damage detection in metal plate structures. Unbounded structures need a special treatment to preserve the dissipation of the energy in the infinite. The use of absorbing layers has been proposed in [29], on the example of a 1-dimensional rod and a 3-dimensional half-cylindrical shell. As far as damage detection is concerned, various techniques applied to simulation of damage effects have been considered. One can refer for instance to [20][21][22] where discontinuities in the form of cracks/caverns or point masses have been accounted for. A semi-analytical approach in analysis of flexural wave propagation through a slender beam, with a breathing edge-crack, is developed in [30]. In the context of non-homogenous material reference [31] discusses the use of the SEM with functionally graded material (FGM). To the authors' best knowledge, the problem of wave propagation in damaged reinforced concrete with the use of SEM has been not investigated.The present study focuses on development of a novel 3D spectral element for wave propagation in reinforced concrete subjected to mechanical degradation. Numerical simulations have been conducted on cuboid concrete specimens reinforced with two steel bars. Different degradation models were considered to reflect the real behaviour of bended beams described in [11].

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Experimental Study on Ultrasonic Monitoring of Splitting Failure in Reinforced Concrete

Cited by 50 publications

References 20 publications

Damage Analysis of Tensioning Cable Anchorage Zone of a Bridge Superstructure, Using CDP Abaqus Material Model

Damage Analysis of Tensioning Cable Anchorage Zone of a Bridge Superstructure, Using CDP Abaqus Material Model

Implementation of Spatial Information for Monitoring and Analysis of the Area Around the Port Using Laser Scanning Techniques

A novel formulation of 3D spectral element for wave propagation in reinforced concrete

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