The Numerical Simulation Analysis of Fracture Properties and Restoring Force Characteristics of Bare Base of Steel Column

2011 ◽  
Vol 189-193 ◽  
pp. 4330-4334
Author(s):  
Huai Ren Guo ◽  
Yun Peng Chu
Keyword(s):  
Numerical Simulation ◽  
Axial Compression ◽  
Compression Ratio ◽  
Large Scale ◽  
Structure Design ◽  
Restoring Force ◽  
Axial Compression Ratio ◽  
Steel Column ◽  
Force Characteristics ◽  
Column Base

The design of steel column base plays a very important role in steel structure design. Through large-scale analysis software ANSYS, this paper analyzes the steel column base by finite element numerical simulation nonlinear analysis,and discuss the fracture behavior and restoring force characteristics of steel pipe column in different thickness and axial compression ratio,and the link between the two. The results showed that, (1) the section of most likely break focus on the bottom of vertical load plane in the middle of the steel column base. (2) with the increase of thickness, anti-cracking ability increased gradually.(3) Axial compression ratio of the specimen has little effect for anti-cracking ability relatively. (4) With the increase of anti-cracking ability, the seismic behavior of specimens gets heightened.

The Analysis of Fracture Properties of Steel Column Base

2010 ◽  
Vol 160-162 ◽  
pp. 619-624
Author(s):  
Yu Bo Gao ◽  
Yong Yao ◽  
Xiao Wei Cheng ◽  
Jin Song Lei ◽  
Yun Peng Chu
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Large Scale ◽  
Structure Design ◽  
Steel Pipe ◽  
Sectional Area ◽  
Fillet Weld ◽  
Axial Compression Ratio ◽  
Steel Column ◽  
Column Base

The design of steel column base plays a very important role in steel structure design. Through large-scale analysis software ANSYS, this paper analyzes the steel column base by finite element numerical simulation analysis,and discuss the fracture behavior of steel pipe column and fillet weld in different thickness, axial compression ratio and different sectional area. The results showed that, the section of most likely break focus on the ends and in the middle of the steel pipe column and fillet weld,and with the increase of thickness, cracking capability of the steel pipe column and fillet weld first increased and then decreased, and axial compression ratio of the specimen has little effect for cracking capability,and with the increase of sectional area, the less prone to fracture of the steel pipe column and fillet weld.

Analysis of Seismic Performance of the Joint of Cellular Steel Column and Steel Beam in Different Axial Compression Ratio

2014 ◽  
Vol 578-579 ◽  
pp. 244-247
Author(s):  
Ya Feng Xu ◽  
Zhang Lin Zhai ◽  
Pi Yuan Xu
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Steel Beam ◽  
Finite Element Software ◽  
Axial Compression Ratio ◽  
Steel Column

This article researches seismic performance of the joint of cellular steel column and steel beam through simulation of the finite element software. With the change of axial force, we can attain the load-displacement hysteretic curves, skeleton curves under the different axial compression ratio, and then analyze their bearing capacity, ductility, energy dissipation and other mechanical properties. Results show that, the decrease of axial compression ratio is helpful to improve the bearing capacity of specimens. The joints of cellular steel column and steel beam have full hysteretic curve, good ductility and seismic performance.

Bearing Capacity Analysis of the Cross-Section Steel Reinforced Concrete Column in Different Parameters

2013 ◽  
Vol 438-439 ◽  
pp. 526-529
Author(s):  
Ri Liang Li ◽  
Ya Feng Xu ◽  
Shou Yan Bai
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Large Scale ◽  
Displacement Curve ◽  
Reinforced Concrete Column ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio ◽  
The Cross

This paper uses the large-scale finite element analysis software ABAQUS to simulate 12 cross steel reinforced concrete special-shaped columns with the control variables of axial compression ratio and rate of steel bone, and subjected to the monotonic load with 20mm horizontal displacement. 6 columns work under the different axial compression ratio of 0.0, 0.4, 0.5, 0.6, 0.7 and 0.8. Other 6 columns are made of different rates of steel bone with different steel bone thickness of 0mm, 2mm, 4mm and 6mm, 8mm and 10mm, and subject to vertical axial force in axial compression ratio of 0.3. By simulating, we obtain the load - displacement curve of different axial compression ratios and different rates of steel bone, and analyze the effect of the bearing capacity of the cross steel reinforced concrete special-shaped columns in different parameters. The results show that the bearing capacities of the columns decrease with the increasing ratio of axial compression, and increase with the increasing rate of steel bone.

scholarly journals Numerical Simulation of Mechanical Properties of Series System with Bearing and Pier Under Lateral Load

2021 ◽  
Vol 16 (1) ◽  
pp. 91-117
Author(s):  
Zhenhua Dong ◽  
Jinquan Zhang ◽  
Shoushan Cheng ◽  
Pengfei Li
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Shear Deformation ◽  
Axial Compression ◽  
Compression Ratio ◽  
Horizontal Load ◽  
Series System ◽  
Horizontal Force ◽  
Axial Compression Ratio ◽  
Adjacent Structure

The local series system with typical common plate rubber support/pier in highway reinforced concrete girder bridge is the object of the current research. The finite element numerical simulation method is used to study sensitive parameters – the mechanical properties of the series system under the horizontal load. The simulated results show that the interface bonding strength between the bearing and adjacent structure is reduced; the equivalent shear deformation and the horizontal force of bearing under horizontal load change insignificantly with the increase of horizontal displacement. However, the total shear deformation and equivalent shear deformation increase with the increase of the axial compression ratio. In addition, the top horizontal force and displacement of the pier significantly decrease with reduction of the connection strength at both ends of the bearing. Therefore, adjusting the axial compression ratio of the pier and interfacial connection mode can obviously affect the mechanical properties of the support and adjacent structure, even the failure mode of the local structure. This approach can help estimate the mechanical properties of the existing bridge and determine the reasonable maintenance plan.

scholarly journals Numerical Simulation on Seismic Behavior of Steel Fiber Reinforced Concrete Beam—Column Joints

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4883
Author(s):  
Ke Shi ◽  
Junpeng Zhu ◽  
Pengfei Li ◽  
Mengyue Zhang ◽  
Ru Xue ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Axial Compression Ratio

Steel fiber reinforced concrete (SFRC) is a novel material of concrete, which has a great potential to be used in practical engineering. Based on the finite element software Opensees, the main objective of this paper presented a numerical simulation method on investigating the seismic behavior of SFRC–beam-column joints (BCJs) through modifying the calculation method of joint shear and longitudinal reinforcement slip deformations. The feasibility and accuracy of the numerical modeling method were verified by comparing the computed results with experimental data in terms of the hysteresis curves, skeleton curves, feature points, energy dissipation, and stiffness degradation. And then, the influences of some key parameters on the seismic behavior of BCJs were investigated and discussed in detail. The parametric studies clearly illustrated that both adding the steel fiber and increasing the stirrup amount of joint core area could significantly improve the seismic behavior of BCJs. The axial compression ratio had limited influence on the seismic behavior of BCJs. Finally, based on the main factors (steel fiber volume ratio, stirrup amount, and axial compression ratio), a formula for predicting ultimate shear capacity is derived.

Numerical Simulation Analysis on Seismic Behavior of Cold-Formed Beam-to-Column Connections

2010 ◽  
Vol 163-167 ◽  
pp. 692-696
Author(s):  
Yun Peng Chu ◽  
Yong Yao
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Welded Joints ◽  
Seismic Behavior ◽  
Great Influence ◽  
Hysteretic Behavior ◽  
Restoring Force ◽  
Finite Element Software ◽  
Axial Compression Ratio

The cold-formed square steel tubular with light weight has better seismic behavior and is suitable for construction in the area with high seismic fortification intensity. The reliability of joint connection greatly influence the safety reliability of structure, which’s restoring force characteristics under low cyclic loading need to be further researched. The finite element software ANSYS is used to do the research between two welded joints. The results show that : (1)Compared with typical welded joint, the ultimate bearing capacity of improved joint increase much, hysteretic curve is more plump, energy dissipation capacity enhance and stiffness degradation is slow. (2) Axial compression ratio has great influence on hysteretic behavior, bearing capacity and stiffness of common welded joints; however, there is a little effect on improved joint’s bearing capacity and stiffness. (3) After improved, the yield of joint has a longer yield platform, and under the same axial compression ratio condition, its yielding and ultimate load both obviously superior to common welded joints.

scholarly journals Nonlinear Numerical Analyses of a Fabricated Connection of Concrete-Filled Steel Column to Steel Beam Under Low-Reversed Cyclic Loading

2017 ◽  
Vol 11 (1) ◽  
pp. 1003-1012
Author(s):  
Chunyi Cui ◽  
Kun Meng ◽  
Yan Kong ◽  
Yannian Zhang ◽  
Wenxin Zuo
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Axial Compression ◽  
Compression Ratio ◽  
Steel Beam ◽  
Axial Compression Ratio ◽  
Ring Plate ◽  
Steel Column ◽  
Hysteretic Characteristics ◽  
Reversed Cyclic

Introduction: Based on FEM program ABAQUS, three-dimensional numerical models of a fabricated connection of concrete-filled steel column to steel beam under low-reversed cyclic loading were established by considering both nonlinearity of material and geometry. Effects of stiffen ring plate, axial compression ratio and backing plate on the hysteresis curves, skeleton curves, ductility coefficient and energy dissipation coefficient were analyzed respectively. Methods: Furthermore, parametric analyses with comparison were also conducted to discuss the mechanical characteristics and damage mechanism of the fabricated connection. Results: The results show that there are clear stress concentrations near the area of bolt holes in beam flange. The increase in width of ring plate and the shape change of ring plate from square to circle can both improve the ductility and the characteristics of hysteretic behavior. Besides, the backing plates have positive effects on the hysteretic characteristics, ductility and energy dissipation of the CFST column connections. Oppositely, the increase in axial compression ratio contributes negatively to both the bearing capacity and deformation performance of the connection specimens. Conclucion: It can be concluded that the fabricated connection displays good working performance relating to hysteretic characteristics, energy dissipation and ductility, which can be hopefully applied and provide reference to engineering practice.

Effect of Axial Compression Ratio on Ductility and Bearing Capacity of Specially Shaped Columns with HRB500 Reinforcement

2012 ◽  
Vol 204-208 ◽  
pp. 1066-1069
Author(s):  
Yan Jun Li ◽  
Ping Liu
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Ultimate Load ◽  
Deformation Capacity ◽  
Displacement Ductility ◽  
Yield Load ◽  
Axial Compression Ratio ◽  
Low Cyclic Loading ◽  
Specially Shaped Column

Four specially shaped columns with HRB500 reinforcement were tested under low cyclic loading. The hysteretic curve, yield load, ultimate load, displacement ductility and rigidity degradation were compared in order to research the effect of axial compression ratio on ductility and bearing capacity of specially shaped column with HRB500 reinforcement. It is shown that the axial compression ratio has greater influence on ductility and bearing capacity. With the increase of axial compression ratio, the bearing capacity of HRB500 reinforcement concrete specially shaped column can be enhanced while the deformation capacity becomes worse. The hysteretic characteristic of specially shaped columns with HRB500 reinforcement is improved and the stiffness degeneration becomes slow with the decrease of axial compression ratio.

Sign in / Sign up

Export Citation Format

Share Document