Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Ding, Fa‐xing; Ying, Xiaoyong; Zhou, Linchao; Yu, Zhenkun

doi:10.1007/s11709-011-0118-6

Cited by 109 publications

(94 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Existing studies have indicated that the stress-strain constitutive model for RAC and normal concrete is very similar [2]. Accordingly, the measured RAC material properties obtained in the present experimental work were used in FE analysis, and the input stress-strain relation for RAC under uniaxial compression and tension used in the current FE analysis was determined from equations (1)-(4), which are given by [33] for normal concrete. e schematic diagram of the stress-strain relation for nonlinear structural analysis of RAC is shown in Figure 9.…”

Section: Materials Model For Racmentioning

confidence: 96%

Experimental and Numerical Evaluation of Perfobond Rib Shear Connectors Embedded in Recycled Aggregate Concrete

Zhang

Mosallam

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

In this paper, the use of recycled aggregate concrete (RAC) for the upper slabs in steel-concrete composite beams is proposed. Perfobond rib connector (PBL), a relatively new type of shear connectors, has been widely used to ensure composite action between the steel and concrete elements in composite beams. For the past decades, several studies on assessing the performance of PBLs have been conducted, but very few focused on the PBLs that are embedded in RAC slabs. is paper presents results of an experimental and numerical simulation study that focused on characterizing the behavior of PBL fabricated using RAC. In the experimental program, a total of six standard push-out specimens, divided into three groups, were fabricated and loaded to failure. Test results indicated that the ductility of the PBLs using RAC materials decreased as the perforated steel plate thickness decreased, while the PBL ultimate strength increased by 4.3% and 12.8% for steel plate thicknesses of 10.0 mm and 12.0 mm, respectively, as compared to specimens with 8.0 mm steel plate thickness. Finite element (FE) models for PBLs embedded in RAC were developed, and numerical results were validated by corresponding experimental results. An extensive parametric numerical analysis was conducted to assess the effects of different parameters such as transverse steel rebar diameter and perforated steel plate strength and thickness on the performance of such connectors. Numerical simulation results showed that the PBL ultimate strength obtained based on the perforated plate fracture failure mode increases linearly as the steel rebar diameter increases. Also, numerical results indicated that as steel plate strength and thickness increase, failure mode changes from steel plate fracture to rupture of reinforced concrete dowels. Furthermore, existing published analytical formulas for predicting behavior of PBLs were assessed via a comparison with experimental and numerical results developed in this study. e outcomes of this study contribute in providing fundamental knowledge in a new sustainable application of PBL in steel-concrete composite beams with RAC slabs.

show abstract

Section: Materials Model For Racmentioning

confidence: 96%

Experimental and Numerical Evaluation of Perfobond Rib Shear Connectors Embedded in Recycled Aggregate Concrete

Zhang

Mosallam

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…m is a parameter that controls the decrease in the elastic modulus along the ascending portion of the axial stress-strain relationship and equals to ranging from 20 MPa to 140 MPa which has been validated by experimental results [13].…”

Section: Finite Element Modelingmentioning

confidence: 99%

“…The displacement loading mode was selected to solve the nonlinear equations. The material constitutive models of concrete used for this study were suggested by Ding et al [13]. In addition, Plastic-damaged model was adopted for the concrete.…”

Section: Finite Element Modelingmentioning

confidence: 99%

Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression

Ding

Liu

et al. 2015

Thin-Walled Structures

View full text Add to dashboard Cite

a b s t r a c tThis paper presents a combined experimental and numerical study on the behavior of both circular and square concrete-filled steel tube (CFT) stub columns under local compression. Twelve circular and eight square CFT stub columns were tested to study their bearing capacity and the key influential parameters. A 3D finite element model was established for simulation and parametric study to investigate the structural behavior of the stub columns. The numerical results agreed well with the experimental results. In addition, analytical formulas were proposed to calculate the load bearing capacity of CFT stub columns under local compression.

show abstract

“…Table 3 shows the element type of the CFT component. Ding et al [16] and Liu et al [17] provided detailed modeling parameters and constitutive material models. Figure 7 presents the FE model of the CFT columns.…”

Section: Fe Modelingmentioning

confidence: 99%

Behavior of Axially Loaded Stirrup Confinement Rectangular Concrete‐Filled Steel Tubular Stub Columns

Liu

Wang

Ding

et al. 2019

Advances in Civil Engineering

View full text Add to dashboard Cite

is article presents the experimental and finite element (FE) analyses of two conventional rectangular concrete-filled steel tubular (CFT) stub columns, two stiffened rectangular concrete-filled steel tubular (SCFT) stub columns, and two stirrup confinement rectangular concrete-filled steel tubular (CCFT) stub columns concentrically loaded in compression to failure. e influences of the ductility and ultimate bearing strength of these stub columns with stiffening ribs or spiral stirrup confinement were discussed. Abaqus was used to establish a 3D FE model and analyze the properties of CFT stub columns subjected to axial compression. e effect of the concrete core and rectangular steel tube under loop stirrup confinement was discussed. Analytical results showed that spiral stirrup confinement can availably retard the local bucking of the rectangular steel pipe, and the effect of the spiral stirrup confinement was stronger than that of stiffeners. e DI values of SCFT and CCFT were 21.9% and 31.9% larger than those of CFT, respectively. e ultimate capacity values of SCFTand CCFT were 10.2% and 18% larger than those of CFT, respectively. e ductility and ultimate bearing strength of the specimens improved effectively under spiral stirrup confinement, and the ductility of the CCFT columns was preferable to that of the SCFT columns.

show abstract

Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Cited by 109 publications

References 2 publications

Experimental and Numerical Evaluation of Perfobond Rib Shear Connectors Embedded in Recycled Aggregate Concrete

Experimental and Numerical Evaluation of Perfobond Rib Shear Connectors Embedded in Recycled Aggregate Concrete

Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression

Behavior of Axially Loaded Stirrup Confinement Rectangular Concrete‐Filled Steel Tubular Stub Columns

Contact Info

Product

Resources

About