Parametric Analysis of Bearing Behavior for Curved Box-Girders of Large Span Steel Structure

2011 ◽  
Vol 243-249 ◽  
pp. 818-823 ◽  
Author(s):  
Zhong Hu ◽  
Da Yi Ding ◽  
Yuan Qing Wang ◽  
Li Yuan Liu ◽  
Hai Ying Wan
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Parametric Analysis ◽  
Steel Structure ◽  
Ultimate Bearing Capacity ◽  
Beam Axis ◽  
Steel Plates ◽  
Box Girders ◽  
Element Analysis ◽  
Airport Terminal

The curved box-girders of Hefei Xinqiao International Airport Terminal were taken as a background of this article. Aiming at the type of the cross section, thickness of the steel plates and curvature of the beam axis, parametric analysis was carried out to evaluate the ultimate bearing capacity of this kind of curved box-girder. Using the finite element analysis software ANSYS, the effects of former three parameters was calculated. From the results, it could be found out that the ultimate bearing capacity increases as the section aspect ratio grows, and it increases linearly as the thickness of the flange and web plate grows. In addition, the ultimate bearing capacity increased and decreased with the increment of the curvature of the beam axis R. The finite element results provided a theoretical basis for experimental research and analysis of the local models provided reasonable suggestions for design as well.

Nonlinear Finite Element Analysis of the Reinforced Concrete Box Girders Strengthened with Carbon Fiber Sheets

2010 ◽  
Vol 163-167 ◽  
pp. 3668-3672
Author(s):  
Cheng Long Wei ◽  
Xu Lei ◽  
Guang Hui Wang
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Bearing Capacity ◽  
Three Dimensional ◽  
Ultimate Bearing Capacity ◽  
Nonlinear Finite Element ◽  
Box Girders ◽  
Element Analysis ◽  
Experimental Researches

With the nonlinear finite element method and the program based on ANSYS which is redeveloped by APDL in it, the ultimate bearing capacity of reinforced concrete box girders strengthened with carbon fiber sheets is analyzed in the paper. The material nonlinearities of concrete, steel bars and carbon fiber sheets are taken into account in the three-dimensional finite element models in which the technology of "element birth and death" is used to consider the secondary loads of carbon fiber sheets. Four strengthened RC box girders same with above calculation models are made for experimental researches. The finite element calculation results are in good accord with those of the experimental researches, which verifies that the proposed numerical calculation method for the analysis of the ultimate bearing capacity of reinforced concrete box girders strengthened with carbon fiber sheets is rational and reliable.

Finite Element Analysis on Ultimate Bearing Capacity of Diagonally Stiffened Steel Plates with Different Span-Depth Ratio

2014 ◽  
Vol 998-999 ◽  
pp. 530-533
Author(s):  
Yi Yin ◽  
Tao Tao Zhang ◽  
Xiao Dan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Steel Plates ◽  
Distribution Law ◽  
Element Analysis ◽  
Depth Ratio ◽  
The Finite Element Analysis ◽  
Stiffened Steel

The ultimate bearing capacity of diagonally stiffened steel plates with different Span-depth ratio were analyzed by the finite element analysis software ANSYS. During the analysis, three groups of diagonally stiffened steel plates with different Span-depth ratio has been taken numerical investigations on static load, and obtained the stress distribution law of development and contrast characteristics of bearing capacity. Analysis shows components' yield and ultimate loads will be significantly improved with the decrease of Span-depth ratio. That means plates with small Span-depth ratio have better mechanical properties.

scholarly journals Experimental Study and Theoretical Analysis on Flexural Mechanical Propertiesof Reinforced Timber Beams

2018 ◽  
Vol 27 (1) ◽  
pp. 096369351802700
Author(s):  
Xiong Xueyu ◽  
Wang Yiqingzi ◽  
Xue Rongjun ◽  
Lu Xuanxing
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Failure Modes ◽  
Theoretical Calculations ◽  
Development Trend ◽  
Ultimate Bearing Capacity ◽  
Bending Test ◽  
Element Analysis ◽  
Finite Element Software ◽  
Reinforced Beams

As Chinese architecture masterpiece, ancient Hui-style architecture is the admiration for Chinese and foreign master builders. According to the bending test, the theoretical calculations and Abaqus finite element analysis on 5 Hui-style architecture beams, this paper points out the differences between un-reinforced beams and reinforced beams on ultimate bearing capacity, deflection and other performance indicators. The reinforcement methods of embedding steel bars, embedding CFRP bars and pasting CFRP plate can respectively improve the ultimate bearing capacity by 20.2%, 32.6% and 37.0%. Based on the plane section assumption and considering thereduction of tensile strength causedby wood knots and defects in tension zone, this paper predicts failure modes of the test beams may occur, and gives the ultimate bearing capacity of different failure modes. In addition, this paper uses the Abaqus finite element software for simulating test beams, and the development trend of load-deflectioncurve between the test and numerical simulation are in good agreement, providing reference for further research of Hui-style architecture.

Nonlinear Finite Element Analysis of Stiffened T-Shaped Thin-Walled Concrete-Filled Steel Tube Composite Columns

2012 ◽  
Vol 193-194 ◽  
pp. 1461-1464
Author(s):  
Bai Shou Li ◽  
Ai Hua Jin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Steel Tube ◽  
Ultimate Bearing Capacity ◽  
Element Analysis ◽  
Concrete Filled Steel Tube ◽  
Composite Columns ◽  
Short Columns ◽  
Thin Walled

Based on the characteristics of the special-shaped concrete-filled steel tubes and consideration of material nonlinearity of constitutive relation, stimulation of 6 T-shaped thin-walled ribbed and un-ribbed concrete-filled steel tube short columns is implemented, as well as comparable analysis of stress, strain, displacement and bearing capacity, through the finite element analysis software ANSYS. The result indicates that the rib can effectively improve the ductility, delaying the buckling occurs, which enhances the core concrete confinement effect, so as the stimulated ultimate bearing capacity which is greater than nominal ultimate bearing capacity.

Column Effective Length Factor and Girder Parametric Analysis for the Components of Xinqiao International Airport Terminal

2011 ◽  
Vol 243-249 ◽  
pp. 897-902
Author(s):  
De Zhang Li ◽  
Da Yi Ding ◽  
Yuan Qing Wang ◽  
Li Yuan Liu ◽  
Hai Ying Wan
Keyword(s):  
Mechanical Properties ◽  
Stability Problem ◽  
Parametric Analysis ◽  
Steel Structure ◽  
Effective Length ◽  
Box Girders ◽  
Effective Length Factor ◽  
Airport Terminal ◽  
Curved Girders ◽  
Box Columns

The steel structure of Hefei Xinqiao International Airport Terminal was taken as a background of this article. The large-span frame is a typical frame of the structure. The curved box-girders are the critical parts of the whole frame. This paper focused on the mechanical properties of the curved girders, as well as the influence on box-columns connected with them. Stability problem is a key problem in the steel structure design, and effective length factor is a way to reflect the stability problem in code for design. In this paper, the whole model of the airport terminal was established to conduct eigenvalue buckling analysis to obtain effective length factors of the box-columns connected to the curved box-girder. In the finite model, a unified axial force was applied on the end of the box-column, and the elements of the box-columns and the adjacent members were refined. Then the effective length factors were derived through the buckling models. In this paper, the curved box-girders of Hefei airport building were studied using finite element software ANSYS. The local model of the curved box-girders were set up to study the mechanical properties of the curved girders including the ultimate capacity analysis. Parametric analysis of the girders was carried out, and the results could be used to guide the design. The results show that finite element method is a convenient way of calculating effective length factors for members with complex boundary conditions, and analysis of local models provides reasonable suggestions for design.

Numerical study of ultimate bearing capacity of rectangular footing on layered sand

2020 ◽  
Vol 1 (101) ◽  
pp. 15-26
Author(s):  
V. Panwar ◽  
R.K. Dutta
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Numerical Study ◽  
Friction Angle ◽  
Ultimate Bearing Capacity ◽  
Loose Sand ◽  
Sand Layer ◽  
Element Analysis ◽  
Dense Sand

Purpose: The purpose of this study is to investigate the ultimate bearing capacity of the rectangular footing resting over layered sand using finite element method. Design/methodology/approach: Finite element analysis was used to investigate the dimensionless ultimate bearing capacity of the rectangular footing resting on a limited thickness of upper dense sand layer overlying limitless thickness of lower loose sand layer. The friction angle of the upper dense sand layer was varied from 41° to 46° whereas for the lower loose sand layer it was varied from 31° to 36°. Findings: The results reveal that the dimensionless ultimate bearing capacity was found to increase up to an H/W ratio of about 1.75 beyond which the increase was marginal. The results further reveal that the dimensionless ultimate bearing capacity was the maximum for the upper dense and lower loose sand friction angles of 46° and 36°, while it was the lowest for the upper dense and lower loose sands corresponding to the friction angle of 41° and 31°. For H/W = 0.5 and 2, the dimensionless bearing capacity decreases with the increase in the L/W ratio from 0.5 to 6 beyond which the dimensionless ultimate bearing capacity remains constant for all combinations of parameters. The results were presented in nondimensional manner and compared with the previous studies available in literature. Research limitations/implications: The analysis is performed using a ABAQUS 2017 software. The limitation of this study is that only finite element analysis is performed without conducting any experiments in the laboratory. Further the study is conducted only for the vertical loading. Practical implications: This proposed numerical study can be used to predict the ultimate bearing capacity of the rectangular footing resting on layered sand. Originality/value: The present study gives idea about the ultimate bearing capacity of rectangular footing when placed on layered sand (dense sand over loose sand) as well as the effect of thickness of top dense sand layer on the ultimate bearing capacity. The findings could be used to calculate the ultimate bearing capacity of the rectangular footing on layered sand.

scholarly journals H-M Bearing Capacity of Cone-Shaped Foundation for Onshore Wind Turbine under Monotonic Horizontal Loading

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
GuoQi Xing ◽  
ChangJiang Liu ◽  
ShanShan Li ◽  
Wei Xuan
Keyword(s):  
Finite Element ◽  
Aspect Ratio ◽  
Theoretical Analysis ◽  
Bearing Capacity ◽  
Influence Factors ◽  
Fine Sand ◽  
Ultimate Bearing Capacity ◽  
Element Analysis ◽  
Horizontal Loading ◽  
Loading Eccentricity

In this paper, monotonic horizontal loading tests were carried out to study the bearing capacity of the cone-shaped foundation in marine fine sand. With load-controlled methods, the horizontal load was applied to the rod of cone-shaped foundation at loading eccentricity ratios of 5.0, 6.0, and 7.0. In addition, theoretical analysis was used to investigate the horizontal ultimate bearing capacity, and finite element analysis was also used in this paper to investigate the influence factors of the bearing capacity of cone-shaped foundation. Based on the theoretical analysis, the formula for horizontal ultimate bearing capacity was deduced. Test results show that, at the same loading eccentricity, cone-shaped foundation can provide higher H-M bearing capacity as well as lower lateral deflection compared to regular circular foundation for wind turbines. In addition, the deflection-hardening behavior of load-deflection curve for cone-shaped foundation is also observed. Numerical analysis results show that the H-M bearing capacity of the cone-shaped foundation increases with increasing aspect ratio and buried depth, however, and decreases with increasing loading eccentricity. Based on the results from finite element analyses, several equations to calculate the maximum moment bearing capacities are put forward, which take the aspect ratio, loading eccentricity, and embedded depth into account.

Simulation and Analysis for Externally Prestressed Concrete Bridge Based on ANSYS

2011 ◽  
Vol 243-249 ◽  
pp. 1737-1742 ◽  
Author(s):  
Ke Chen ◽  
Jian Yong Song ◽  
Shuo Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Prestressed Concrete ◽  
Local Stress ◽  
Ultimate Bearing Capacity ◽  
Concrete Bridge ◽  
Element Analysis ◽  
Bridge Model ◽  
Prestressed Concrete Bridge

The externally prestressed bridge finite element analysis module redeveloped based on ANSYS software is introduced，realizing finite element analysis method for externally prestressed concrete bridge. It is able to build the externally prestressed bridge finite element model, combined with Solid65 and Solid45 simulated concrete, and Link8 or Link10 simulated prestressed tendon. It is also able to bring material and geometric nonlinear effects into the analysis, for analyzing ultimate bearing capacity and local stress characterization of the externally prestressed structure. A bridge model is generated as an example for verifying the application of the module. Based on it, the model then is equipped with different allocation arrangements of internal and external tendons to analyze the mechanical characteristics of externally prestressed concrete bridge. Research is conducted for the effect on ultimate bearing capacity by allocation arrangement of tendons, and providing design suggestion and theoretic basis.

Nonlinear Finite Element Analysis of the Ultimate Bearing Capacity of the Arch Plate Based on the ABAQUS

2014 ◽  
Vol 501-504 ◽  
pp. 2504-2508
Author(s):  
Si Hua Deng ◽  
Han Jin
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Nonlinear Finite Element ◽  
Element Analysis ◽  
Finite Element Software ◽  
Failure Simulation ◽  
Ultimate Failure ◽  
Design Calculations ◽  
External Loads

In this paper, nonlinear analysis of arch plate ultimate bearing capacity and the process of nonlinear ultimate failure were conducted by ABAQUS finite element software. The numerical failure simulation of steels, arch plate under different external loads and the separation of concrete as well as the whole slippage of concrete were operated. A reference for the further design calculations of reinforced concrete arch plate structure is provided as well.

EXAMINATION ON ULTIMATE BEARING CAPACITY OF FOOTING BY REGID PLASTIC FINITE ELEMENT ANALYSIS

2013 ◽  
Vol 78 (686) ◽  
pp. 763-770
Author(s):  
Kazuhiro KANEDA ◽  
Satoru OHTSUKA ◽  
Yoshimasa SHIGENO ◽  
Masamichi AOKI ◽  
Junji HAMADA ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Element Analysis
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