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

Dependent Behaviour ◽

Composite Steel ◽

Composite Floors

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.

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

10.2749/sed018.ch7 ◽

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 ◽

Dependent Behaviour ◽

Composite Steel

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.

Time-dependent behaviour of concrete structures with special reference to podium and frame structures

10.5353/th_b3867424 ◽

2007 ◽

Author(s):

Chi-hong Liu

Keyword(s):

Special Reference ◽

Concrete Structures ◽

Time Dependent ◽

Frame Structures ◽

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

10.2749/sed018.ch5 ◽

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 ◽

Arch Bridges ◽

Cfst Columns ◽

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.

Time-dependent Behaviour Analysis of Long-span Concrete Arch Bridge

The Baltic Journal of Road and Bridge Engineering ◽

10.7250/bjrbe.2019-14.441 ◽

2019 ◽

Vol 14 (2) ◽

pp. 227-248

Author(s):

Yongbao Wang ◽

Renda Zhao ◽

Yi Jia ◽

Ping Liao

Keyword(s):

Concrete Structures ◽

Time Dependent ◽

Mean Deviation ◽

Concrete Creep ◽

Arch Bridge ◽

Model Code ◽

Creep And Shrinkage ◽

This paper continues the previous study on clarifying the time-dependent behaviour of Beipanjiang Bridge ‒ a reinforced concrete arch bridge with concrete-filled steel tubular stiffened skeleton. The obtained prediction models and the Finite Element Models were used to simulate the long-term behaviour and stress redistribution of the concrete arch bridge. Three-dimensional beam elements simulated the stiffened skeleton and surrounding concrete. Then, a parameters study was carried out to analyse the time-dependent behaviour of the arch bridge influenced by different concrete creep and shrinkage models. The simulation results demonstrate that concrete creep and shrinkage have a significant influence on the time-dependent behaviour of the concrete arch bridge. After the bridge completion, the Comite Euro-International du Beton mean deviation of displacements obtained by 1990 CEBFIP Model Code: Design Code model and fib Model Code for Concrete Structures 2010 model are 3.4%, 31.9% larger than the results predicted by the modified fib Model Code for Concrete Structures 2010 model. The stresses between the steel and the concrete redistribute with time because of the concrete long-term effect. The steel will yield if the fib Model Code for Concrete Structures 2010 model is used in the analysis. The stresses in a different part of the surrounding concrete are non-uniformly distributed.

A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures

10.21012/fc10.232972 ◽

2019 ◽

Author(s):

T Valente

Keyword(s):

Numerical Simulation ◽

Concrete Structures ◽

Time Dependent ◽

Creep Model ◽

Basic Creep ◽

Thermomechanical Model ◽

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

10.2749/sed018.ch4 ◽

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 ◽

Dependent Behaviour ◽

Composite Steel

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.

Time-Dependent Behaviour of Concrete Structures

10.1201/9781482288711 ◽

2010 ◽

Cited By ~ 45

Author(s):

Raymond Ian Gilbert ◽

Gianluca Ranzi

Keyword(s):

Concrete Structures ◽

Time Dependent ◽

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

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i3.11293 ◽

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 ◽

Shotcrete Lining ◽

Creep And Shrinkage ◽

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.

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

SN Applied Sciences ◽

10.1007/s42452-021-04577-6 ◽

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 ◽

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.