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

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.

Download Full-text

Study on Seismic Behavior of Joint with Exterior Diaphragms between Concrete-Filled Square Steel Tubular Column and H-Type Steel Beam

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.578-579.805 ◽

2014 ◽

Vol 578-579 ◽

pp. 805-809

Author(s):

Nan Li

Keyword(s):

Cyclic Loading ◽

Seismic Design ◽

Seismic Behavior ◽

Failure Criteria ◽

Steel Beam ◽

Equivalent Viscous Damping ◽

Type Steel ◽

Study Results ◽

Energy Dissipation Capacity ◽

Current Code

Based on the experiments of joint with exterior diaphragms between concrete-filled square steel tubular column and H-type steel beam under cyclic loading, with appropriate material stress-strain relations and failure criteria, the mechanical properties of this type of joint were researched by using ANSYS,finite element analyses were conducted under cyclic loading, the hysteretic and framework curves of this type joint between test and theoretical were researched. The study results showed that all specimens have good ductility and energy dissipation capacity. The story angle drift ductility ratios areμ=3.07~3.66,the elastic and elastic-plastic story angle drift are Φy=0.0041~0.0047 and Φu=0.0124~0.0172,and the equivalent viscous damping coefficients are he=0.26~0.35,which meet the needs of the current code for seismic design of building.

Download Full-text

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.744-746.207 ◽

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.

Download Full-text

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

E3S Web of Conferences ◽

10.1051/e3sconf/202128301028 ◽

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.

Download Full-text

Mechanical Behavior Study on Connections of Multibarrel Tube-Confined Concrete Column with Steel Beam

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.166-169.3269 ◽

2012 ◽

Vol 166-169 ◽

pp. 3269-3272

Author(s):

Li Ying Xu

Keyword(s):

Mechanical Behavior ◽

Seismic Design ◽

Seismic Behavior ◽

Ultimate Load ◽

Steel Tube ◽

Confined Concrete ◽

Steel Beam ◽

Concrete Column ◽

Good Ductility ◽

Behavior Study

In order to meet the necessity of the code for seismic design of buildings: Principle for strong connections and feebleness member. The exernal steel tube of column and steel beam are joining with three kinds of style. Containing two strengthen styles T-style stiffening plate and appending haunch. The result reveals that the two strengthen connections ultimate load are much bigger, good ductility, better seismic behavior. The deformation of the column and the region of the connection is smaller when it was broken, Indicating the connections’s globality is better and the stiffness is bigger. It avoids brittleness for breaking styles when they are given more load.

Download Full-text

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.400-402.701 ◽

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.

Download Full-text

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

Advances in Structural Engineering ◽

10.1177/13694332211007392 ◽

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.

Download Full-text

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.351-352.174 ◽

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.

Download Full-text

Strain Analysis of Composite Frame Joints with Double Side Penetrated Diaphragms

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.166-169.3277 ◽

2012 ◽

Vol 166-169 ◽

pp. 3277-3281

Author(s):

Min Tong

Keyword(s):

Stress Distribution ◽

Strain Analysis ◽

Steel Tube ◽

Core Region ◽

Steel Beam ◽

Static Test ◽

The Core ◽

Composite Frame ◽

Joint Connection ◽

New Type

Abstract. Connection joint with penetrated diaphragm, which is better for the stressing state of the welding connection, is a new type joint for the beam and column connection. Static test and pseudo-static test are put to 17 crossing joints. The stress distribution of the steel beam and the penetrated diaphragm are discussed. The experiment shows that the penetrated diaphragm transfer most tension force of the steel beam’s upper flange to the core region of the joint, which could effectively decrease the stress and strain gradient within the connection area of the steel beam’s upper flange and steel tube column. As the result, the shear force of the core region is decreased. The front weld is avoided being surfing great tension. The ductility of the joint and the energy dissipation capacity of the structure are then increased. The type and the size of the penetrated diaphragm show great affection to the stress distribution of steel beam and penetrated diaphragm. The study achievement enriches the joint connection type of the composite structure with concrete- filled steel tube.

Download Full-text