Cracking Mechanism and Strengthening Method of Double Web Shoulder-Beams within Four-Limb CFST Columns

ZHAO Xuan; LIAO Xu; HU Zhaohui; LIU Jun; NIE Ying; CHEN Siyu; LI Xian; LIU Xiguang

doi:10.3724/j.gyjzG25051006

Volume 55 Issue 7

Jul. 2025

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ZHAO Xuan, LIAO Xu, HU Zhaohui, LIU Jun, NIE Ying, CHEN Siyu, LI Xian, LIU Xiguang. Cracking Mechanism and Strengthening Method of Double Web Shoulder-Beams within Four-Limb CFST Columns[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(7): 60-69. doi: 10.3724/j.gyjzG25051006

Citation:

ZHAO Xuan, LIAO Xu, HU Zhaohui, LIU Jun, NIE Ying, CHEN Siyu, LI Xian, LIU Xiguang. Cracking Mechanism and Strengthening Method of Double Web Shoulder-Beams within Four-Limb CFST Columns[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(7): 60-69. doi: 10.3724/j.gyjzG25051006

Citation:

ZHAO Xuan, LIAO Xu, HU Zhaohui, LIU Jun, NIE Ying, CHEN Siyu, LI Xian, LIU Xiguang. Cracking Mechanism and Strengthening Method of Double Web Shoulder-Beams within Four-Limb CFST Columns[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(7): 60-69. doi: 10.3724/j.gyjzG25051006

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Cracking Mechanism and Strengthening Method of Double Web Shoulder-Beams within Four-Limb CFST Columns

doi: 10.3724/j.gyjzG25051006

ZHAO Xuan^1,2,
LIAO Xu²,
HU Zhaohui^1,2,
LIU Jun^3,4,
NIE Ying¹,
CHEN Siyu⁴,
LI Xian^{2
,
,},
LIU Xiguang³

1. CISDI Group Co., Ltd., Chongqing 400013, China;
2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221000, China;
3. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710000, China;
4. XAUAT Engineering Technology Co., Ltd. Xi'an 710055, China

Received Date: 2025-05-10
Available Online: 2025-09-12

Abstract

Abstract

Nowadays， the shoulder-beams of heavy industrial plants in China are widely cracked under repeated crane loads， seriously threatening the production safety of the plants. To investigate the fatigue cracking mechanism and fatigue life of the double-web shoulder-beams in four-limb concrete-filled steel tubular （CFST） columns， this paper analyzed the key factors affecting the fatigue strength of the ortho-welded zone of the crane limb of shoulder-beams by field inspection. Finite element models were used to simulate the pseudo-static fatigue crack propagation of double-web shoulder-beams in four-limb CFST columns under eight different working conditions. Based on the structural principal stress distribution， the effects of the longitudinal eccentricity of the crane beam， the local suspension of the shoulder-beam support on the stress damage of the crane limb were analyzed. Finally， based on the linear elastic fracture mechanics， it was found that the shear fatigue life of the vertical joint seam of the web and column was reduced by 52.2%， when the longitudinal eccentricity of the crane beam was 42.5%. The shear fatigue life of the vertical joint seam between the web and stiffener was reduced to less than 300000 times， when the shoulder-beam support was 50% suspended. To address the issue of the crane limb of the shoulder beam being prone to cracking under eccentric loading， a reinforcement method using welded vertical steel plates was proposed. This method significantly improves the mechanical performance of the shoulder beam. Currently， this method has been successfully applied in several domestic heavy metallurgical industrial buildings.
- four-limb CFST columns,
- double web shoulder-beam,
- stress damage,
- fatigue life,
- strengthening method

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References(26)

References

[1]	DOH J H，GUAN H，KIM T. Parametric and comparative study of spandrel beam effect on the punching shear strength of reinforced concrete flat plates［J］. The Structural Design of Tall and Special Buildings，2012，21（8）:605-620.
[2]	董振平. 钢管混凝土双肢柱肩梁受力性能与设计方法研究［D］. 西安:西安建筑科技大学，2011.
[3]	于安林，童根树. 钢管混凝土四肢柱单斜缀杆双腹板肩梁的受力性能［J］. 西安公路交通大学学报，1998（2）:38-40.
[4]	兰涛，李泽旭，傅彦青，等. 钢管混凝土双肢中柱双层肩梁单向加载试验及肩梁承载力计算模型［J］. 工业建筑，2021，51（9）:16-23，81.
[5]	LAN T，HU W Z，GAO R X，et al. The research and development on shoulder beam of CFST［C］//. 2016 International Symposium on Material Application and Engineering（SAME 2016）. 2016.
[6]	门进杰，彭泰，范栋鑫，等. 钢管混凝土双肢边柱双层肩梁设计方法研究［J］. 工业建筑，2021，51（9）:9-15，131.
[7]	王宗让，苏明周，董振平. 改进型钢管混凝土柱单腹板肩梁有限元分析及设计方法［J］. 西安建筑科技大学学报（自然科学版），2015，47（5）:666-671.
[8]	董超，王立军，关晓松. 钢格构柱肩梁的计算分析［J］. 钢结构，2018，33（5）:81-84.
[9]	WANG Y，QI B F，YAO P Y. Analysis of stress distribution of double-layer shoulder beam of concrete-filled steel tubular［J］. Materials Science and Engineering，2020，746，012006.
[10]	赵轩，徐浩然，陶修，等. 工业厂房吊车梁肩梁的疲劳失效机理分析及结构优化研究［J］. 特种结构，2022，39（5）:25-31.
[11]	DENG L，WU H B，HE W，et al. Genuine influence line and influence surface identification from measured bridge response considering vehicular wheel loads［J］. Journal of Bridge Engineering，2023，28（2），04022145.
[12]	LI X，LIAO X，LI Z Y，et al. Confinement mechanism of rectangular CFST components using double horizontally-corrugated steel plates［J］. Structures，2023，57，105107.
[13]	LIAO X，LI X，ZHAO S D，et al. Behavior of eccentrically loaded rectangular CFST components for shear walls using double horizontally-corrugated steel plates［J］. Engineering Structures，2024，33，117470.
[14]	JI J，KANG W，XU M，et al. Theoretical and finite element analysis of steel corbel columns under eccentric compression［J］. Earth and Environmental Science，2020，571，012133.
[15]	姚忠. 重型厂房吊车梁纵向安装偏差对肩梁局部受力性能的影响分析［J］. 钢结构，2012，27（10）:32-36.
[16]	岳清瑞，赵晓青，幸坤涛. 重型工业厂房箱形吊车梁上翼缘焊缝区域疲劳研究［J］. 建筑结构，2016，46（24）:90-94.
[17]	中华人民共和国住房和城乡建设部. 钢结构设计标准:GB 50017—2017［S］. 北京:中国建筑工业出版社，2018.
[18]	YUAN L C，WEI Y. Unified SIF at different stress ratios and the physical insight on the exponent of the Paris law［J］. International Journal of Fatigue，2024，184，108314.
[19]	中华人民共和国住房和城乡建设部. 工业建筑可靠性鉴定标准:GB 50144—2019［S］. 北京:中国计划出版社，2019.
[20]	WANG X W，SHANG D G，SUN Y J，et al. Algorithms for multiaxial cycle counting method and fatigue life prediction based on the weight function critical plane under random loading［J］. International Journal of Damage Mechanics，2019，28（9）:1367-1392.
[21]	LI Z L，SHI D Q，LI S L，et al. A systematical weight function modified critical distance method to estimate the creep-fatigue life of geometrically different structures［J］. International Journal of Fatigue，2019，126:6-19.
[22]	TONG X L，TUAN C Y，YANG J P，et al. Fatigue strength of end-coped crane runway girders［J］. Journal of Structural Engineering，2007，133:1783-1791.
[23]	LIAO X，ZHAO X，LI X，et al. Fatigue cracking of shoulder beams and I-shaped corbels within four-limb CFST columns［J］. Journal of Constructional Steel Research，2024，220，108812.
[24]	杨佑发，陈前，雷鸣. 在役钢结构吊车梁疲劳可靠性分析［J］. 振动与冲击，2020，39（9）:165-172，193.
[25]	凌昊. 钢吊车梁的疲劳寿命分析与预测［D］. 重庆:重庆大学，2018.
[26]	幸坤涛，刘洪滨，岳清瑞. 在役钢结构吊车梁剩余疲劳寿命的可靠寿命评估［J］. 工程力学，2004（3）:101-105.