scholarly journals Study on Seismic Behavior of Concrete-filled square steel tube column with core column-Steel Beam Joints

2021 ◽  
Vol 283 ◽  
pp. 01028
Author(s):  
Wang Meng ◽  
Tao Yi
Keyword(s):  
Bearing Capacity ◽  
Seismic Behavior ◽  
Steel Tube ◽  
Parameter Analysis ◽  
Steel Beam ◽  
Beam Specimen ◽  
Static Tests ◽  
Core Column ◽  
Energy Dissipation Capacity ◽  
Square Steel Tube

This paper has carried out the quasi-static tests of five specimens of FRP-UHPC column-steel beam joints with core columns, and the extensive parameter analysis of the joints by numerical simulation. The results show that the Concrete-filled square steel tube column with core column -Steel Beam Joints have strong bearing capacity. It has excellent deformability, stiffness and energy dissipation capacity, and works well under the condition of high axial compression ratio. The bearing capacity of the replacement beam specimen does not deteriorate significantly, which indicates that the Concrete-filled square steel tube column with core column -Steel Beam Joints is replaceable.

Experimental Research on Seismic Behavior of New Joint between Concrete-Filled Square Steel Tubular Column and Steel Beam

2014 ◽  
Vol 638-640 ◽  
pp. 1923-1927
Author(s):  
Nan Li ◽  
Ya Jun Xi
Keyword(s):  
Seismic Design ◽  
Seismic Behavior ◽  
Seismic Energy ◽  
Steel Tube ◽  
Steel Beam ◽  
Equivalent Viscous Damping ◽  
New Type ◽  
Energy Dissipation Capacity ◽  
Square Steel Tube ◽  
Reversed Cyclic

A new type of joint between Concrete-filled Square Steel Tube columns and steel beam is proposed in this paper, and the seismic behavior of this type of joint under low-reversed cyclic loading experiment is researched. Ductility behavior, dissipation of seismic energy of this joint under horizontal, repeat load are analyzed. The experimental results showed that all specimens have good ductility and energy dissipation capacity. The story angle drift ductility ratios are μ=3.23~3.63, and the equivalent viscous damping coefficients are he=0.25~0.35,which meet the needs of the code for seismic design of building.

Study of Bearing Capacity for Vertical Stiffener Joint with Concrete-Filled Square Steel Tube and Steel Beam

2012 ◽  
Vol 166-169 ◽  
pp. 239-244
Author(s):  
Su Wang ◽  
Qian Zhu ◽  
Jun Hai Zhao ◽  
Dong Fang Zhang
Keyword(s):  
Experimental Data ◽  
Bearing Capacity ◽  
Annular Plate ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Joint Model ◽  
Steel Tube ◽  
Steel Beam ◽  
Vertical Stiffener ◽  
Square Steel Tube

Based on the limit equilibrium method and assumptions of vertical stiffener joint model, the stress mechanism of vertical stiffener joint model is analyzed for concrete-filled square steel tube and steel beam. The formula of bearing capacity for vertical stiffener joint of concrete-filled square steel tube and steel beam is established. The rationality of proposed formula is validated by comparing analytical results with experimental data. Moreover, some factors involved in the proposed bearing capacity formula of connection joints are discussed. The results can provide some theoretical references for the study of bearing capacity of annular plate joint.

Seismic Performance Study on the Joint of Crisscross Concrete-Filled Steel Tube Column-Steel Beam in Different Axial Compression Ratios

2014 ◽  
Vol 578-579 ◽  
pp. 305-308
Author(s):  
Ya Feng Xu ◽  
Shao Jie Zhu ◽  
Pi Yuan Xu ◽  
Riyad S. Aboutaha
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Seismic Performance ◽  
Steel Tube ◽  
Ultimate Bearing Capacity ◽  
Steel Beam ◽  
Compression Force ◽  
Performance Study ◽  
Concrete Filled Steel Tube ◽  
Core Column

In this paper, the finite element analysis software ABAQUS is used to study the seismic performance of the joint of crisscross concrete-filled steel tube core column-steel beam tested by the pseudo static simulation under low cyclic loading. Then we can get the load-displacement curves of the joint when the axial compressive ratios are 0.2~0.9. By the data analysis can be drawn: the joint of crisscross concrete-filled steel tube core column and steel beam has good ductility and strong plastic deformation capacity, and it can absorb the seismic energy largely; within range of smaller axial compression ratios, the ultimate bearing capacity of the joint has increased with the increasing of axial compression force, however, in range of larger axial compression ratios, the ultimate bearing capacity of the joint has reduced with increasing of the axial compression force; and ductility of the beam-column joint has no obvious decline when the axial force increases.

Numerical Simulation of Joint between Concrete-Filled Square Steel Tubular Column and Steel Beam on Seismic Behavior

2015 ◽  
Vol 744-746 ◽  
pp. 207-210
Author(s):  
Nan Li ◽  
Dong Ning Zhang
Keyword(s):  
Numerical Simulation ◽  
Cyclic Loading ◽  
Seismic Behavior ◽  
Failure Criteria ◽  
Steel Tube ◽  
Steel Beam ◽  
Finite Element Program ◽  
Element Program ◽  
Square Steel Tube ◽  
Reversed Cyclic

A type of joint between Concrete-filled Square Steel Tube columns and steel beam is proposed in this paper, Based on joint experiment, appropriate material stress-strain relations and failure criteria are proposed, numerical simulation by finite element program is conducted under monotonic and cyclic loading and the seismic behavior of the joints under low-reversed cyclic loading is researched. Through the data contrast, it is proved that this type of joint has nice seismic behavior.

Experimental Studies on Seismic Behavior of Concrete-Filled Steel Square Tubular Column-Steel Beam Connection

2008 ◽  
Vol 400-402 ◽  
pp. 701-706
Author(s):  
Hong Fan ◽  
Q.S. Li ◽  
Li Hua Xu
Keyword(s):  
Energy Dissipation ◽  
Seismic Behavior ◽  
Experimental Studies ◽  
Technical Specification ◽  
Steel Tube ◽  
Seismic Resistance ◽  
Steel Beam ◽  
Hysteresis Curves ◽  
Good Energy ◽  
Energy Dissipation Capacity

This paper introduces a new connection－inner and through-type diaphragm, which is recommended by Technical Specification for Structures with Concrete-filled Rectangular Steel Tube Members. It studies some factors including the additional plates installed on both sides of the flanges, the width-to-thickness ratio of the column and the length of the through diaphragm which have an influence to the seismic resistance behaviors of connection through cyclic test. The results show the hysteresis curves attained in the experiment are full and the rigidity deterioration is not obvious. The connection models have a good energy dissipation capacity. Meanwhile the stress distributing can be ameliorated and the ductility of the connections can also be improved through welding the additional plates to both sides of the flanges.

The Seismic Behavior of Strengthened Joints between Concrete-Filled Steel Tubes and Beams Based on the Numerical Simulation Technology

2010 ◽  
Vol 150-151 ◽  
pp. 571-575
Author(s):  
Yun Peng Chu ◽  
Yong Yao ◽  
Shu Lian Xiao ◽  
Yue Chen
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Double Layer ◽  
Seismic Behavior ◽  
Steel Tube ◽  
Ultimate Bearing Capacity ◽  
Steel Tubes ◽  
Concrete Filled Steel Tube ◽  
Energy Dissipation Capacity ◽  
Concrete Filled Steel Tubes

As a key part in concrete-filled steel tubular frames, the seismic behavior of joints between concrete-filled steel tubes and beams needs more research because of the complexity of stress under the reciprocating load. the behavior of 9 strengthened joints connecting concrete-filled steel tube with H-shaped steel beam have been analyzed under reversed cyclic loading condition by using finite element analysis software ANSYS, and the result show that: (1) The ultimate bearing capacity, energy dissipation capacity and ductility of strengthened joint are obvious better than that of ordinary welded joint; (2) Compared to concrete-filled steel tube the ultimate bearing capacity, energy dissipation capacity and ductility of double-layer concrete-filled steel tubes are better; (3) For the joints connecting double-layer concrete-filled steel tubes with beams, the shape of inner tube have certain effect on the ultimate bearing capacity but little on the energy dissipation capacity and ductility. (4) The shape of stiffened plate has significant influence on the ultimate bearing capacity, energy dissipation capacity and ductility of nodes.

Research on seismic behavior of special-shaped CFST column to H-section steel beam joint

2021 ◽  
pp. 136943322110073
Author(s):  
Yu Cheng ◽  
Yuanlong Yang ◽  
Binyang Li ◽  
Jiepeng Liu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Seismic Behavior ◽  
Failure Modes ◽  
Joint Stiffness ◽  
Load Ratio ◽  
Element Model ◽  
Steel Tube ◽  
Steel Beam ◽  
Static Test

To investigate the seismic behavior of joint between special-shaped concrete-filled steel tubular (CFST) column and H-section steel beam, a pseudo-static test was carried out on five specimens with scale ratio of 1:2. The investigated factors include stiffening types of steel tube (multi-cell and tensile bar) and connection types (exterior diaphragm and vertical rib). The failure modes, hysteresis curves, skeleton curves, stress distribution, and joint shear deformation of specimens were analyzed to investigate the seismic behaviors of joints. The test results showed the connections of exterior diaphragm and vertical rib have good seismic behavior and can be identified as rigid joint in the frames with bracing system according to Eurocode 3. The joint of special-shaped column with tensile bars have better seismic performance by using through vertical rib connection. Furthermore, a finite element model was established and a parametric analysis with the finite element model was conducted to investigate the influences of following parameters on the joint stiffness: width-to-thickness ratio of column steel tube, beam-to-column linear stiffness ratio, vertical rib dimensions, and axial load ratio of column. Lastly, preliminary design suggestions were proposed.

Research on the Joint of Concrete-Filled Steel Tubular Column and Steel Beam

2013 ◽  
Vol 351-352 ◽  
pp. 174-178
Author(s):  
Ying Zi Yin ◽  
Yan Zhang
Keyword(s):  
Energy Dissipation ◽  
Failure Mechanism ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Strength Degradation ◽  
Steel Beam ◽  
Failure Characteristics ◽  
Static Test ◽  
Axial Compression Ratio ◽  
Energy Dissipation Capacity

With the pseudo-static test of 4 concrete-filled square steel tubular column and steel beam joint with outer stiffened ring, this paper discusses the failure characteristics, failure mechanism and seismic behavior of joints under different axial compression ratio. The analysis of the testing results shows: when reached the ultimate strength, the strength degradation and stiffness degradation of joints are slowly and the ductility is also good, the energy dissipation capacity of joints is much better.

Finite Element Simulation on Behavior of the High-Strength Concrete Filled High-Strength Square Steel Tube Middle-Long Columns under Axial Compressive Load

2014 ◽  
Vol 578-579 ◽  
pp. 340-345
Author(s):  
Guo Chang Li ◽  
Bo Wen Zhu ◽  
Yu Liu
Keyword(s):  
Bearing Capacity ◽  
High Strength Concrete ◽  
Slenderness Ratio ◽  
High Strength ◽  
Steel Tube ◽  
New Combination ◽  
Length Variation ◽  
Compression Process ◽  
Strength Concrete ◽  
Square Steel Tube

In this paper, using ABAQUS, 16 high-strength concrete filled high-strength square steel tube middle-long columns’ axial compression process were simulated. The load-deflection relationships were obtained and the new combination in improving the bearing capacity and plastic deformation has a great advantage. Realization of length variation slenderness ratio by changing the length of column, this paper also study the influence of slenderness ratio, the main parameters of the high-strength concrete filled high-strength square steel tube middle-long column. It is found that both bearing capacity and the plastic capacity are associated with slenderness ratio.

Research progress on diaphragm-through joint of Concrete-Filled Square Steel Tube and steel beam

2015 ◽  
pp. 155-158
Author(s):  
Ming Li ◽  
Ming Zhao ◽  
Yuanqing Wang ◽  
Wei Tao ◽  
Shoukun Li ◽  
...  
Keyword(s):  
Steel Tube ◽  
Research Progress ◽  
Steel Beam ◽  
Square Steel Tube
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