A theoretical axial stress-strain model for circular concrete-filled-steel-tube columns

2016 ◽  
Vol 125 ◽  
pp. 124-143 ◽  
Author(s):  
M.H. Lai ◽  
J.C.M. Ho
Keyword(s):  
Axial Stress ◽  
Steel Tube ◽  
Stress Strain ◽  
Concrete Filled Steel Tube ◽  
Strain Model

Study on Stress-Strain Relationship of FRP-Confined Concrete Filled Steel Tubes

2010 ◽  
Vol 163-167 ◽  
pp. 3826-3829
Author(s):  
Feng Yu ◽  
Ping Wu
Keyword(s):  
Main Parameter ◽  
Steel Tube ◽  
Confined Concrete ◽  
Stress Strain ◽  
Steel Tubes ◽  
Concrete Filled Steel Tube ◽  
Strain Relationship ◽  
Relationship Of ◽  
Concrete Filled Steel Tubes ◽  
Strain Model

FRP-confined concrete filled steel tube may fully use the character of FRP-confined concrete and concrete filled steel tube. Based on the analysis of existing experimental data, the formula of ultimate bearing capacity of FRP-confined concrete filled steel tube is proposed. The mechanical behavior of FRP-confined concrete filled steel tube is mainly related to the equivalent confinement effect coefficient before the rupture of FRP. Based on the static equilibrium condition, the equivalent conversion section is adopted; taking as main parameter, the simplified stress-strain model of FRP-confined concrete filled steel tube is established. The predictions of the model agree well with test data.

A path dependent stress-strain model for concrete-filled-steel-tube column

2020 ◽  
Vol 211 ◽  
pp. 110312 ◽  
Author(s):  
M.H. Lai ◽  
W. Song ◽  
X.L. Ou ◽  
M.T. Chen ◽  
Q. Wang ◽  
...  
Keyword(s):  
Steel Tube ◽  
Stress Strain ◽  
Concrete Filled Steel Tube ◽  
Path Dependent ◽  
Strain Model

Three Types of Stress-Strain Relationship’s Comparison of Circular Tubed Reinforced Concrete in FEA

2012 ◽  
Vol 204-208 ◽  
pp. 930-933
Author(s):  
Xiao Hu ◽  
Zhen Lin Chen
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Uniaxial Stress ◽  
Steel Tube ◽  
Finite Element Analyses ◽  
Stress Strain ◽  
Concrete Filled Steel Tube ◽  
Bearing Analysis

The paper introduces 3 types of uniaxial stress-strain relationships of concrete filled steel tube by Pan Youguang, Susantha and Saenz, and performs finite element analyses of the axial strengths of 18 CTRC columns, studies the characters of three models, and comprises between the axial strengths from FEA and existed experiments. Results show these 3 types of model are all suitable for bearing analysis, but Pan’s model is more accurate.

scholarly journals A MULTI-AXIAL STRESS-STRAIN MODEL FOR STRUCTURAL ALUMINUM ALLOYS UNDER CYCLIC LOADS

2002 ◽  
Vol 67 (558) ◽  
pp. 227-232 ◽  
Author(s):  
Tadao NAKAGOMI ◽  
Tomohisa YAMADA ◽  
Yuichi ICHIKAWA ◽  
Atsushi SUGIE
Keyword(s):  
Aluminum Alloys ◽  
Axial Stress ◽  
Cyclic Loads ◽  
Stress Strain ◽  
Strain Model

scholarly journals Experimental Study on CFRP-Confined Circularized Concrete-Filled Square Steel Tube Short Columns

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Yuchuan Wen ◽  
Zhongjun Hu ◽  
Anningjing Li ◽  
Quanheng Li ◽  
Xuepeng Li ◽  
...  
Keyword(s):  
Concrete Strength ◽  
Concrete Columns ◽  
Steel Tube ◽  
Confined Concrete ◽  
Test Results ◽  
Stress Strain ◽  
Short Columns ◽  
Reinforced Polymer ◽  
Square Steel Tube ◽  
Strain Model

This study investigates the suitability of the circularization technique for strengthening square concrete-filled square steel tube (CFSST) short columns. A total of 16 specimens were tested under axial compression. The main parameters under investigation were concrete strength, the thickness of arc cement mortar layer components (CAM), and the layers of carbon fiber-reinforced polymer (CFRP) sheets. Test results indicated that the failure mode of CFRP-confined circularized CFSST (C-C-CFSST) columns was similar to that of CFRP-confined concrete columns. The CFRP-confined circularized strengthening method can increase confinement efficacy and reduce the stress concentration at the corners of CFSST columns. Three existing CFRP-confined concrete stress-strain models were evaluated using the test results. The predictions of the Lam and Teng stress-strain model agree well with the test data.

Axial Stress–Strain Model for FRCM Confinement of Masonry Columns

2021 ◽  
Vol 25 (1) ◽  
pp. 04020078
Author(s):  
Francesco Micelli ◽  
Gennaro Maddaloni ◽  
Fabio Longo ◽  
Andrea Prota
Keyword(s):  
Axial Stress ◽  
Stress Strain ◽  
Strain Model

scholarly journals Nonlinear Stress-Strain Model for Confined Well Cement

Materials ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 2626 ◽  
Author(s):  
Yan Li ◽  
Yunhu Lu ◽  
Ramadan Ahmed ◽  
Baoguo Han ◽  
Yan Jin
Keyword(s):  
Axial Stress ◽  
Confining Pressure ◽  
Oil Well ◽  
Stress Strain ◽  
Well Design ◽  
Nonlinear Stress ◽  
Uniaxial Compressive Strength Test ◽  
Ductile Behavior ◽  
Well Cement ◽  
Strain Model

The cement sheath is the key for providing the zonal isolation and integrity of the wellbore. Oil well cement works under confining pressure, so it exhibits strong nonlinear and ductile behavior which is very different from that without confining pressure. Therefore, for the accuracy of the simulation and the reliability of well construction design, a reliable compression stress–strain model is essential for confined well cement. In this paper, a new axial stress–strain model for confined well cement is developed based on uniaxial and triaxial test data, examinations of failure mechanisms, and the results of numerical analysis. A parametric study was conducted to evaluate and calibrate the model. The model is simple and suitable for direct use in simulation studies and well design. Results from this study show the nonlinear compressive behavior of confined well cement can be predicted using the traditional uniaxial compressive strength test measurements.

Axial stress–strain model developed for rectangular RC columns confined with FRP wraps and anchors

Structures ◽  
2020 ◽  
Vol 23 ◽  
pp. 779-788 ◽  
Author(s):  
Haytham F. Isleem ◽  
Muhammad Tahir ◽  
Zhenyu Wang
Keyword(s):  
Axial Stress ◽  
Stress Strain ◽  
Rc Columns ◽  
Strain Model
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