State-of-the-art review on the time-dependent behaviour of composite steel-concrete slabs

2021 ◽  
pp. 41-59
Author(s):  
Gianluca Ranzi ◽  
Raymond Ian Gilbert
Keyword(s):  
State Of The Art ◽  
Time Dependent ◽  
Concrete Slabs ◽  
Time Effects ◽  
Work Related ◽  
Composite Slabs ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour ◽  
Composite Steel ◽  
Composite Floors

<p>This chapter presents a state-of-the-art review of work published to date on the time-dependent response of composite steel-concrete slabs. The key components of this form of construction are introduced in the first part of the chapter, followed by a review of the time-dependent behaviour of the concrete and how it affects the in-service response of composite slabs. Throughout the chapter, particular attention is given to recent experimental and modelling work related to concrete time effects, and how these affect the in-service response of composite slabs, including the development of non-uniform shrinkage gradients that have been recently shown to occur in composite floors due to the inability of the concrete to dry from its underside because of the presence of the profiled steel sheeting.</p>

Case studies considering the influence of the time-dependent behaviour of concrete on the serviceability limit state design of composite steel-concrete buildings

2021 ◽  
pp. 137-156
Author(s):  
Alejandro Pérez Caldentey ◽  
John Hewitt ◽  
John van Rooyen ◽  
Graziano Leoni ◽  
Gianluca Ranzi ◽  
...  
Keyword(s):  
Case Studies ◽  
Limit State ◽  
Time Dependent ◽  
Commercial Building ◽  
Time Effects ◽  
Concrete Buildings ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour ◽  
Composite Steel

<p>This chapter presents a number of case studies that deal with the service design of composite steel-concrete buildings associated with the time-dependent behaviour of the concrete. The particular focus of this chapter is to outline key design aspects that need to be accounted for in design and that are influenced by concrete time effects. The first case study provides an overview of the design considerations related to the time-dependent column shortening in typical multi-storey buildings by considering the layout of the Intesa Sanpaolo Headquarters in Turin as reference. The second case study focuses on a composite floor of a commercial building constructed in Australia and it provides an overview of the conceptual design used to select the steel beam framing arrangement to support the composite floor system while accounting for concrete cracking and time effects. The third case study deals with the Quay Quarter Tower that has been designed for the repurposing of an existing 50-year old building in Australia while accounting for the time-dependent interaction between the existing and the new concrete components of the building.</p>

State of the art on the time-dependent behaviour of composite steel–concrete structures

2013 ◽  
Vol 80 ◽  
pp. 252-263 ◽  
Author(s):  
Gianluca Ranzi ◽  
Graziano Leoni ◽  
Riccardo Zandonini
Keyword(s):  
State Of The Art ◽  
Concrete Structures ◽  
Time Dependent ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour ◽  
Composite Steel

Time-dependent behaviour of timber–concrete composite floors with prefabricated concrete slabs

2013 ◽  
Vol 52 ◽  
pp. 687-696 ◽  
Author(s):  
M. Fragiacomo ◽  
E. Lukaszewska
Keyword(s):  
Time Dependent ◽  
Concrete Slabs ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour ◽  
Composite Floors

scholarly journals Shrinkage-Induced Response of Composite Steel–Concrete Slabs: A State-of-the-Art Review

2021 ◽  
Vol 12 (1) ◽  
pp. 223
Author(s):  
Md Mahfuzur Rahman ◽  
Gianluca Ranzi
Keyword(s):  
State Of The Art ◽  
Concrete Slab ◽  
Limit State ◽  
Time Dependent ◽  
Concrete Slabs ◽  
Induced Response ◽  
Composite Slabs ◽  
Long Term Behavior ◽  
Composite Steel

Composite steel–concrete slab is a floor typology widely used for building applications. Their design is usually governed by serviceability limit state requirements associated with the time-dependent response of the concrete. In this context, this paper presents a state-of-the-art review of research carried out to date on the long-term behavior of composite steel–concrete slabs. The particularity of this time-dependent response relies on the fact that the concrete cannot dry from the underside of the slab due to the presence of the profiled sheeting while it can dry from its upper surface. In the first part of the paper, a review of the work carried out on the identification of the time-dependent response of the concrete is presented by considering the peculiarities that occur due to the non-symmetric drying condition related to composite slabs. Particular attention is given to shrinkage effects and to the occurrence and influence of the non-uniform shrinkage gradient that develops in this form of construction over time. This is followed by the description and discussion of the experimental work performed on both simply-supported and continuous static configurations of composite slabs. In particular, the work published to date is summarized while highlighting the key parameters of the test samples and of the testing protocols adopted in the experiments. In the last part of the paper, available theoretical and design models proposed for the predictions of the shrinkage-induced behavior of composite slabs are presented and discussed.

State-of-the-art review on the time-dependent behaviour of composite steel-concrete beams

2021 ◽  
pp. 61-82
Author(s):  
Gianluca Ranzi ◽  
Graziano Leoni ◽  
Raymond Ian Gilbert ◽  
Luigino Dezi ◽  
Riccardo Zandonini
Keyword(s):  
Concrete Beams ◽  
Structural Response ◽  
Composite Beams ◽  
Time Dependent ◽  
Time Effects ◽  
Shear Connection ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour ◽  
Composite Steel

<p>This chapter provides an overview of the work carried out to date on the long-term behaviour of composite steel-concrete beams. In the first part of the chapter, a description of the components forming a composite member is presented. This is followed by an outline of the main kinematic concepts, such as full and partial shear interaction, that influence the structural response of this form of construction due to the flexibility of the shear connection provided between the concrete and steel components. The review of the work performed on the time-dependent behaviour of concrete and its influence on the long-term structural response of composite beams for building and bridge applications is then presented. The modelling and experimental work considered in the review highlights the importance of considering concrete time effects, when predicting the in-service response of composite beams.</p>

scholarly journals Time-dependent behaviour of timber lightweight concrete composite floors

2010 ◽  
Vol 32 (12) ◽  
pp. 3966-3973 ◽  
Author(s):  
L.F. Jorge ◽  
J. Schänzlin ◽  
S.M.R. Lopes ◽  
H. Cruz ◽  
U. Kuhlmann
Keyword(s):  
Lightweight Concrete ◽  
Time Dependent ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour ◽  
Composite Floors

State-of-the-art review on the time-dependent behaviour of composite steel-concrete columns

2021 ◽  
pp. 83-109
Author(s):  
Yue Geng ◽  
Gianluca Ranzi ◽  
Yu-yin Wang ◽  
Raymond Ian Gilbert ◽  
Sumei Zhang
Keyword(s):  
State Of The Art ◽  
Steel Tube ◽  
Time Dependent ◽  
Composite Columns ◽  
Chloride Corrosion ◽  
Time Dependent Behaviour ◽  
Arch Bridges ◽  
Cfst Columns ◽  
Dependent Behaviour

<p>This chapter presents a state-of-the-art review of the time-dependent behaviour of composite columns. The first part of the chapter outlines the available typologies and advantages of composite columns. This is followed by an overview of the time-dependent response of concrete (specific to composite columns) and an introduction to concrete confinement. The main part of the chapter is devoted to the state-of-the-art review on how concrete time effects influence the long-term and ultimate behaviour of concrete-filled steel tube (CFST) columns, and on the combined effects produced by sustained loading and chloride corrosion on CFST columns. The review then deals with the long-term behaviour of concrete-filled double skin tube (CFDST) and encased composite columns. The final parts of the chapter provide a review of the time-dependent differential axial shortening (DAS) in vertical components of multi-storey buildings and on the long-term response of arch bridges.</p>

Application of shotcrete constitutive model to the time dependent behavior of TBM tunnel lining

2018 ◽  
Vol 7 (3) ◽  
pp. 1826
Author(s):  
Heyam H. Shaalan ◽  
Mohd Ashraf Mohamad Ismail ◽  
Romziah Azit
Keyword(s):  
Constitutive Model ◽  
Steel Fibre ◽  
Tunnel Lining ◽  
Time Dependent ◽  
Elastic Behaviour ◽  
Elastic Analysis ◽  
Time Dependent Behaviour ◽  
Shotcrete Lining ◽  
Creep And Shrinkage ◽  
Dependent Behaviour

Shotcrete is ordinary concrete applied to the surface under high pressure. It demonstrates a highly time-dependent behaviour after few hours of application. Traditional approaches assume a simple linear elastic behaviour using a hypothetical young modulus to investigate the time-dependency and creep effects. In this paper, a new constitutive model of shotcrete is applied to evaluate the time-dependent behaviour of a TBM tunnel lining and investigate the parameters that can influence this behaviour. The Shotcrete model is based on the framework of Elasto-plasticity and designed to model shotcrete linings more realistically. The basic data of Pahang-Selangor Raw Water Transfer Project is used for the analysis study. An attempt is made to investigate the influence of some input parameters of the shotcrete model on the time-dependent behaviour of the shotcrete lining. These parameters include the time-dependent stiffness/strength parameters, creep and shrinkage parameters and steel fibre parameters. The variation in shotcrete strength classes causes a noticeable influence on the development of shotcrete compressive strength with time, particularly during the first days of application. The creep and shrinkage strain cause a considerable reduction in the development of the shotcrete stress with time. The impact of steel fibre content is determined, and the result indicated that the development of plain shotcrete stresses with time is lower than that of the reinforced shotcrete. In addition, a comparison study is performed to analyse the tunnel lining behaviour using both shotcrete model and an elastic analysis. Significant differences in shotcrete lining stresses are achieved when using the elastic analysis while the shotcrete model results in a reasonable result that can be used for the design requirements. 

scholarly journals Application of micro-computer tomography and inverse finite element analysis for characterizing the visco-hyperelastic response of bulk liver tissue using indentation

2021 ◽  
Vol 3 (5) ◽  
Author(s):  
Rajeswara R. Resapu ◽  
Roger D. Bradshaw
Keyword(s):  
Finite Element ◽  
Liver Tissue ◽  
Loading Rate ◽  
Time Dependent ◽  
Nonlinear Material ◽  
Computational Time ◽  
List Type ◽  
Prony Series ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour

Abstract In-vitro mechanical indentation experimentation is performed on bulk liver tissue of lamb to characterize its nonlinear material behaviour. The material response is characterized by a visco-hyperelastic material model by the use of 2-dimensional inverse finite element (FE) analysis. The time-dependent behaviour is characterized by the viscoelastic model represented by a 4-parameter Prony series, whereas the large deformations are modelled using the hyperelastic Neo-Hookean model. The shear response described by the initial and final shear moduli and the corresponding Prony series parameters are optimized using ANSYS with the Root Mean Square (RMS) error being the objective function. Optimized material properties are validated using experimental results obtained under different loading histories. To study the efficacy of a 2D model, a three dimensional (3D) model of the specimen is developed using Micro-CT of the specimen. The initial elastic modulus of the lamb liver obtained was found to 13.5 kPa for 5% indentation depth at a loading rate of 1 mm/sec for 1-cycle. These properties are able to predict the response at 8.33% depth and a loading rate of 5 mm/sec at multiple cycles with reasonable accuracy. Article highlights The visco-hyperelastic model accurately models the large displacement as well as the time-dependent behaviour of the bulk liver tissue. Mapped meshing of the 3D FE model saves computational time and captures localized displacement in an accurate manner. The 2D axisymmetric model while predicting the force response of the bulk tissue, cannot predict the localized deformations.

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