Experimental Study on Loading Capacity of Concrete-Filled Circular Hollow Section K-Joints

Tong, Lewei; Sun, Chao; Chen, Yiyi

doi:10.3850/978-981-07-7137-9_058

Cited by 3 publications

(15 citation statements)

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“…Con-filled Tong et al (2007aTong et al ( , 2007b 12.50 Chord crown 8.00 Chord crown 2.9* Brace crown tension side…”

Section: Cfchs-3mentioning

confidence: 99%

“…Non-filled Jardine (1993) Tong et al (2007a) conducted SCF analysis for the same specimens in Tong et al (2007b) subjected to in-plane bending. Strain measurements were taken at the crown position only, on the chord and brace wall.…”

Section: Axial Compressionmentioning

confidence: 99%

“…The concrete infill absorbs some of the applied energy and reduces tube wall deformations which results in less stress concentration. Several researches have been reported in the literature on the fatigue behaviour of concrete filled steel tubular (CFST) T-joints (Chen et al, 2010;Jardine, 1993;Mashiri and Zhao, 2010;Tong et al, 2007aTong et al, , 2007bWang et al, 2013), K-joints (Sakai et al, 2004;Tong et al, 2008;Udomworarat et al, 2002Udomworarat et al, , 2000, Y-joints (Xu et al, 2015), KT-joints (Xu et al, 2015), N-joints (Kim et al, 2014) and X-joints (Qian et al, 2014). Two methods have been successfully used in estimating fatigue life of tubular members, namely the classification method and the hot spot stress method.…”

Section: Introductionmentioning

confidence: 99%

“…Maximum SCFs results are tabulated in Table 2. Tong et al (2007b) conducted a series of static tests to study the SCF for fatigue purposes in CFST T-joints under axial force. Ten specimens with different non-dimensional geometric parameters and concrete grade were tested under axial compression and tension in the brace.…”

Section: Introductionmentioning

confidence: 99%

“…Finally, the effect of concrete strength on the maximum SCF has been found to be very little and negligible. Table 1 Specimens' details of the T-joints Tong et al (2007aTong et al ( , 2007b 8.86 Chord crown…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Fatigue behaviour of concrete-filled steel tubular joints - a review

Musa

Mashiri

Zhu

2016

IJLCPE

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High stress concentration at weld vicinity in welded steel tubular joints has led researchers to try finding an effective method to reduce these stresses. Since the beginning of the last decade, concrete filling of the steel tubes has been effectively used to reduce stresses at the tubular joints. This paper summarises research on stress concentration factors and fatigue behaviour conducted on concrete-filled steel tubular T-, Y-, K-, KT-, N-, and X-joints. Based on available experimental results, nominal stress range and hot spot stress range design S-N curves have been proposed for concrete-filled steel tubular joints. These curves are compared with that of the tubular joints without concrete filling. Research gaps have also been highlighted and it has been found that the current research is insufficient to reasonably predict fatigue behaviour of concrete filled tubular joints.

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“…Con-filled Tong et al (2007aTong et al ( , 2007b 12.50 Chord crown 8.00 Chord crown 2.9* Brace crown tension side…”

Section: Cfchs-3mentioning

confidence: 99%

Section: Axial Compressionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fatigue behaviour of concrete-filled steel tubular joints - a review

Musa

Mashiri

Zhu

2016

IJLCPE

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Experimental Stress Concentration Factor in Concrete-Filled Steel Tubular T-Joints

Musa

Mashiri

Zhu

et al. 2018

Journal of Constructional Steel Research

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Experimental investigation of stress concentration factor (SCF) in Steel circular hollow section brace welded to concrete-filled circular hollow section chord (CHS-to-CFCHS) T-joints has been performed under axial tension, axial compression, in-plane bending and out-of-plane bending. The distribution of SCF around the welded brace-to-chord intersection on both the brace and chord has been investigated using three CHS-to-CFCHS T-joint specimens. The experimental SCF results have been compared with the predicted SCF in empty T-joints. The relationship between the maximum SCF in relation to parameter β, with fixed other geometrical parameters, has been investigated for the basic load conditions. The experimental maximum SCF under axial tension has been compared with the predicted maximum SCF from parametric equations for CHS-to-CFCHS T-joints previously developed by the authors. The results show that the concrete has a significant effect in reducing the SCF, mostly under axial tension and the parametric equations for predicting SCFs in empty T-joints are not suitable for CHS-to-CFCHS T-joints. The effect of parameter β on the maximum SCF in CHS-to-CFCHS T-joints is significant under axial tension and out-of-plane bending moment.

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Experimental Study on SNCF of Welded CHS-CFSHS T-Joints under Axial Loading

Yang

Tong

Zhao

2010

AMR

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The initiation position can be predicted by studying on strain concentration factors (SNCF) and SNCF distributions. This paper concerns an experimental investigation of SNCF of welded T-joints composed of circular hollow section (CHS) braces and concrete-filled square hollow section (CFSHS) chords under axial loading on the braces with two load cases of tension and compression. Static experiments were performed on eight test specimens designed for considering different non-dimensional geometric parameters and C50 grade concrete. Compared with joints made of CHS-SHS, the experimental results indicate that the CHS-CFSHS T-joints have lower strain concentration factors which may increase fatigue strength. The position of the maximum SNCF is usually located at 00 or 900 of the intersection line between a CHS brace and a CFSHS chord.

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Experimental Study on Loading Capacity of Concrete-Filled Circular Hollow Section K-Joints

Cited by 3 publications

References 0 publications

Fatigue behaviour of concrete-filled steel tubular joints - a review

Fatigue behaviour of concrete-filled steel tubular joints - a review

Experimental Stress Concentration Factor in Concrete-Filled Steel Tubular T-Joints

Experimental Study on SNCF of Welded CHS-CFSHS T-Joints under Axial Loading

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