Reliability Analysis of Circular Concrete-Filled Steel Tube with Material and Geometrical Nonlinearity

2012 ◽  
Vol 446-449 ◽  
pp. 550-555
Author(s):  
Teng Fei Xu ◽  
Tian Yu Xiang ◽  
Yu Lin Zhan ◽  
Ren Da Zhao
Keyword(s):  
Reliability Analysis ◽  
Geometrical Nonlinearity ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Reliability Analysis of Circular Concrete-Filled Steel Tube with Material and Geometrical Nonlinearity

2012 ◽  
Vol 446-449 ◽  
pp. 550-555
Author(s):  
Teng Fei Xu ◽  
Tian Yu Xiang ◽  
Yu Lin Zhan ◽  
Ren Da Zhao
Keyword(s):  
Reliability Analysis ◽  
Geometrical Nonlinearity ◽  
Three Dimensional ◽  
Steel Tube ◽  
Material Strength ◽  
Rational Analysis ◽  
Element Analysis ◽  
Concrete Filled Steel Tube ◽  
Analysis And Design ◽  
Reliability Method

Most of the previous researches on the concrete-filled steel tube are restricted to deterministic approach. To give a clearer insight about random properties of circular concrete-filled steel tube, reliability analysis is carried in the present study. Material and geometrical nonlinear analysis of a circular concrete-filled steel tube is performed with a three-dimensional degenerated beam element, which can efficiently obtain the structural nonlinear responses. Through the combination of first order reliability method and nonlinear finite element analysis, the reliability about ultimate resistance capacity of the concrete-filled steel tube is investigated. The influences of parameters such as material strength, slenderness, initial geometrical imperfection, and etc. on reliability of circular concrete-filled steel tube column are studied. Some conclusions obtained from reliability analysis may be beneficial for rational analysis and design of the concrete-filled steel tube in practical engineer structures.

Reliability analysis of concrete-filled steel tube columns under axial compression

2021 ◽  
Author(s):  
Tran-Trung Nguyen ◽  
Phu-Cuong Nguyen ◽  
Viet Trinh Tran ◽  
Duc-Duy Pham ◽  
Lahouari Benabou
Keyword(s):  
Reliability Analysis ◽  
Axial Compression ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Nonlinear Stability Analysis on the Concrete Casting Step of Long-Span Concrete-Filled Steel Tube Arch Bridge

2009 ◽  
Vol 614 ◽  
pp. 275-282
Author(s):  
Ji Wang ◽  
Ming Zhong Zhang ◽  
Xiao Li Guo
Keyword(s):  
Stability Analysis ◽  
Nonlinear Stability ◽  
Geometrical Nonlinearity ◽  
Steel Tube ◽  
Material Nonlinearity ◽  
Nonlinear Stability Analysis ◽  
Arch Bridge ◽  
Concrete Filled Steel Tube ◽  
Long Span ◽  
Cfst Arch Bridge

In recent years, concrete-filled steel tube (CFST) was developed and used extensively in civil engineering in China. In this paper, the method for stability analysis of long-span CFST arch bridge was introduced. Based on Jingyang River Bridge in Hubei province of China and finite element method, the spatial model was set up. Both linear and nonlinear stability of long-span CFST arch bridge in construction process were analyzed. The result indicated the influence of geometrical nonlinearity was small and the influence of material nonlinearity was evident. So, for analyzing the stability of long-span CFST arch bridge, the influence of geometrical nonlinearity and material nonlinearity must be considered at the same time. The results of paper were used to provide the basis for the construction control of the bridge.

Stone prism encased concrete-filled steel tube columns subjected to axial compression

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 1853-1867
Author(s):  
Yong Ye ◽  
Yang Liu ◽  
Zi-Xiong Guo ◽  
Rachel Chicchi
Keyword(s):  
Axial Compression ◽  
Steel Tube ◽  
Concrete Filled Steel Tube

Shear response of steel fiber reinforced recycled concrete-filled steel tube columns

2021 ◽  
pp. 136943322110093
Author(s):  
Zhenzhen Liu ◽  
Yiyan Lu ◽  
Shan Li ◽  
Jiancong Liao
Keyword(s):  
Axial Compression ◽  
Steel Fiber ◽  
Steel Tube ◽  
Shear Capacity ◽  
Recycled Concrete ◽  
Recycled Aggregate ◽  
Superposition Method ◽  
Fiber Reinforced ◽  
Concrete Filled Steel Tube ◽  
Shear Span

A comprehensive study of the shear characteristics of steel fiber reinforced recycled concrete-filled steel tube (SRCFST) columns is conducted. 50 CFST stub columns are tested with the variables of steel tube diameter-thickness ratio ( D/t), shear span-to-depth ratio (λ), axial compression ratio ( n), and concrete mix. Two types of cements, three recycled aggregate percentages, three water-cement ratios, and three steel fiber contents are considered in design of concrete mixes. The experimental results show that SRCFST columns present the coincident shear behavior of the ordinary CFST columns. As λ is increased, shear resistance shows a downtrend, while the flexural strength presents an increasing trend. Imposing axial compression or thickening steel tube contributes to an adequate safety margin in plastic period. Based on the contributions superposition method, a predicted model of the shear capacity of SRCFST columns is proposed in consideration of shear-span ratio, axial compression, and self-stress.

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