Article
Engineering, Civil
Yiwen Wu, Shenggang Fan, Li Du, Qixun Wu
Summary: Stainless steel lipped C-section components exhibit complex nonlinear buckling behavior, necessitating improved calculation theories. Through experiments and finite element modeling, research on the distortional buckling capacity of these components has led to the proposal of simplified formulas and calculation methods, which have been verified for accuracy.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Civil
Jiahui Zhao, Shenggang Fan, Chenxu Li, Jingwen Peng, Jiaojiao Li
Summary: This study investigated the local-distortional interaction buckling capacity of stainless steel lipped C-section columns by conducting material properties tests and capacity tests. The development process and failure mode of the local-distortional interaction buckling were revealed, and the capacity, load-axial shortening curves, load-lateral displacement curves, and load-strain curves of the columns were obtained. A finite element model was established and verified through comparison with test results. Parametric analysis showed that the initial geometric imperfection amplitude has a significant influence on the buckling capacity, while the influence of boundary conditions is small.
Article
Construction & Building Technology
Jiahui Zhao, Bing-Lin Lai, Shenggang Fan, Meijing Liu, Chenxu Li
Summary: This paper aims to conduct a parametric study on the Local-Distortional Interaction Buckling (LDIB) behavior of lipped C-section stainless steel columns through numerical simulation and propose the relevant calculation formulas of LDIB bearing capacity. Based on the validated Finite Element (FE) model, the LDIB capacity of different lipped C-section stainless steel columns was numerically computed, and the calculation formulas of LDIB capacity were then proposed using the direct strength method. The proposed formulas deliver enhanced accuracy and robustness than the existing formulas and hence could be reliably employed for the design of lipped C-section stainless steel columns.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Shenggang Fan, Yiwen Wu, Li Du, Meijing Liu, Qixun Wu
Summary: The mechanical properties and distortional buckling capacity of S30408 austenitic stainless steel were studied, showing higher yield strength but lower elongation in the corner region. Post-buckling strength was observed in specimens after distortional buckling.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Xingyou Yao, Yafei Liu, Shile Zhang, Yanli Guo, Chengli Hu
Summary: This study investigates the buckling behavior and bearing capacity design method of cold-formed steel double-lipped equal-leg angles under axial compression. The experimental results and finite element analysis showed the influence of different width-to-thickness ratios and slenderness ratios on the buckling modes. Comparisons with North American and Chinese standards indicated the conservative nature of the calculated results. Modified design methods were proposed based on the experimental results, which showed good agreement with the ultimate strength of the angles under axial compression.
Article
Construction & Building Technology
Qiyun Qiao, Jiafeng Li, Ben Mou, Wanlin Cao
Summary: The study proposed an innovative RCFSST column, which showed higher ultimate bearing capacity and better ductility compared to CFSST columns. Increasing spiral stirrup ratio significantly improved bearing capacity and post-peak ductility, while increasing the number and strength of longitudinal reinforcing bars also enhanced bearing capacity. However, higher concrete strength may decrease ductility. Inserting a small amount of reinforcement can economically improve the ductility of CFSST columns with high strength concrete.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Meijing Liu, Yiwen Wu, Shenggang Fan, Qixun Wu, Dun Liang
Summary: A refined finite element model was established and verified to investigate the failure mode and bearing capacity of stainless steel beams based on a bearing capacity test of specimens. Numerous parametric analyses were carried out to study the effects of initial geometric imperfections, strength improvement of corner, and buckling slenderness ratio on the buckling modes and bearing capacity. Two design methods for local-distortional interaction buckling of stainless steel beams were proposed based on the Direct Strength Method, and their reliability for engineering application was verified through a reliability analysis.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Jie Wang, Jin Di, Qian Zhang, Fengjiang Qin
Summary: This study experimentally investigated the overall buckling of 12 welded H-section axial compression specimens made of high-strength steel, and conducted a parametric analysis via finite element simulation. The research found that as the strength of the steel increased, the axial ductility of the component decreased, and the size of the section where the strain entered the plasticity during buckling failure decreased. The finite element simulation verified the accuracy of the models and provided applicable buckling curves for the HSS-welded H-section axial compression members.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Qiyun Qiao, Jiafeng Li, Zhaoyuan Yang, Wanlin Cao, Jing Yang, Wenwen Zhang
Summary: The paper investigates the axial compressive behavior of concrete-filled stainless-carbon steel tube (CFSCT) stub columns, revealing that increasing the wall thickness of the carbon steel tube significantly improves the ultimate strength and residual strength of the columns. Additionally, an increase in concrete strength has a significant impact on the ultimate strength of the specimens.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Yongqian Zheng, Duoyi He, Guiyun Yan, Erneste Mbanda
Summary: This paper investigates the behavior of stainless steel tube-confined steel-reinforced recycled concrete columns (SSTCSRRC) under axial compression. The results show that the confinement effect of the stainless steel tube improves the ultimate strength and ductility of the columns, while the ultimate strength decreases with an increase in recycled brick aggregate (RBA) placement ratio. A high RBA placement ratio or using cross-shaped section steel can significantly improve the ductility of the columns. Additionally, a finite element model was developed to predict the performance of SSTCSRRC columns, and design formulas for axial compressive strength and stiffness were proposed.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Materials Science, Composites
Wang Zhixin, Gao Aijun, Xu Lianghua, Tong Yuanjian
Summary: A specially designed fixture was used to accurately measure the compressive strength of carbon fibers. The effect of adhesive thickness and specimen length on the testing results was investigated. The study found that the compressive strength of T800HB-12 K carbon fibers was approximately 2700 MPa with a coefficient of variation of 8%.
POLYMER COMPOSITES
(2022)
Article
Engineering, Marine
Qiao Qiyun, Yang Zhaoyuan, Cao Wanlin
Summary: This research investigated stainless steel tube confined concrete column piers subjected to axial loading. The study found that the axial compressive ultimate strength was influenced by tube thickness and concrete strength, with circular specimens showing a five times increase in strength compared to square specimens. Increasing tube thickness could enhance the ductility and rigidity of the specimens.
Article
Engineering, Civil
Bing Li, Chao Cheng, Zhimin Song, Xianlei Cao, Zhengyi Kong
Summary: This study investigates the local buckling behavior of high strength steel (HSS) welded box-section columns through experiments and finite element analysis. It is found that initial geometric imperfections and residual stresses have less influence on the local buckling of HSS columns compared to normal strength steel (NSS). The difference between the local buckling and post-buckling strengths of HSS is larger than that for NSS. The existing specifications for predicting the local buckling load and ultimate load of HSS columns are evaluated and found to be slightly overestimated or underestimated. More accurate empirical formulas are recommended for determining the local buckling load and ultimate load of HSS columns.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Meihe Chen, Shenggang Fan, Junjin Liu, Jianhui Li, Dian Li, Guangming Yu
Summary: This paper investigates the structural behavior of cold-formed stainless steel lipped channel columns that fail in distortional-global interactive buckling, and proposes a more accurate design method for predicting their ultimate capacities.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Jun-zhi Liu, Han Fang, Tak -Ming Chan
Summary: This paper presents a comprehensive experimental investigation into the structural behaviour of high strength steel hexagonal hollow sections stub columns under concentric compression. It compares and assesses the existing design codes for the cross-sectional strength predictions of HSS HexHS. The study found that the current design codes underestimate the resistance of HSS HexHS and the Continuous Strength Method provides more accurate predictions compared to the Direct Strength Method.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Jingzhe Li, Qihan Shen, Jingfeng Wang, Fengqin Wang, Guoqiang Li
Summary: This study investigates the effectiveness of externally bonding carbon-FRP for strengthening concrete-filled steel tube short columns with void defects. It proposes strength prediction formulas and provides insights into the strengthening mechanisms.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Tianyao Liu, Xudong Qian, Wei Wang, Yiyi Chen
Summary: This article translates the ductile tearing process of welded joints made from circular hollow sections into the load resistance and strain levels, providing an interface between fracture-mechanics based assessments and engineering analysis and monitoring.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Review
Construction & Building Technology
Zhen Zhu, Yuliang Chen, Huiqin Wu, Peihuan Ye
Summary: This study investigated the shear capacity of solid-web H-shaped steel reinforced concrete (HSRC) columns under combined torque. Seven HSRC columns were tested, and the influence of different parameters on the shear capacity was analyzed. The results showed that the addition of H-shaped steel improved the shear capacity, while increasing the axial compression ratio increased the shear capacity. However, increasing the torsion bend ratio and shear span ratio decreased the shear capacity.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Naizhou Zhang, Huatian Zhao, Lianjin Bao, Feng Zhou, Xiaoming Chen, Sheng Jiang, Gang Shi
Summary: This study focuses on the mechanical properties of butt welds in thick GJ steel plates and analyzes the differences between the weld specimens and the base metals in terms of static and cyclic mechanical properties.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Xianzhong Zhao, Zhenyu Xu, Shen Yan
Summary: This study aims to reveal the mechanisms that determine the survival of suspended domes when subjected to sudden cable rupture. The results show that the remaining structure can arrest the initial local damage and establish an alternative path for hoop cables, thereby regaining balance. The relaxation of hoop cables can transmit outwards and inwards, causing severe damage and potential structural collapse. The failure of diagonal cables has minimal impact on the structure.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Kathleen Lauwens, Barbara Rossi
Summary: This paper presents an experimental program that tests the behavior of fabricated stainless steel beams under combined bending and torsion. The test results are compared to elastic theory and highlight the overly conservative nature of current design rules.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Sima Abolghasemi, Nicholas E. Wierschem, Mark D. Denavit
Summary: Structures susceptible to soft story mechanisms are particularly vulnerable to earthquakes. The strongback has been proposed as a way to prevent soft story mechanisms, but its impact on structural performance considering vertical stiffness irregularities and different arrangements of energy dissipation devices is unclear. This study investigates the effects of strongback on a small-scale four-story elastic structure with varying stiffness irregularities and damper arrangements. The results show that the strongback significantly reduces maximum story drift and makes the structural performance insensitive to damper position and distribution.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Tran-Van Han, Jeong MoonSook, YongNam Kim, Dongkyu Lee, Nguyen-Vu Luat, Kihak Lee
Summary: This paper presents a new approach for steel modular structures, incorporating the S-CN connector and rectangular hollow section (RHS) steel members. The mechanical behavior of S-CN connectors and their application in beam-column connections under compressive loading are studied numerically and validated experimentally.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Yong-li Tao, Xue-chun Liu, Xuesen Chen, Wen -bin Cui, Long-xin Guo
Summary: In this study, different weld details were proposed to improve the seismic performance of steel column splicing flange joints. Four full-scale specimens were tested under cyclic loads to analyze the hysteresis behaviors, yield moment, ductility, bolt forces, energy dissipation, stress and strains. Parametric analysis was conducted to discuss the influences of weld details, weld geometries, and flange openings. The results showed that different weld details had advantages in terms of ductility or energy dissipation capacity, bolt tension distribution, stress or strain distributions. Formulas for yield moments were proposed and validated for seismic design of bolted flange joints in prefabricated steel structures.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Wanqian Wang, Jingfeng Wang, Xiao Peng, Lei Guo
Summary: This paper investigates the overall response of the lightweight EPS-filled cold-formed steel (CFS) shear wall structure to earthquake disasters. A simplified analysis model is established using a strut and tie-equivalent spring model. Nonlinear analysis is conducted to assess the seismic resilience of this type of residence. The research findings provide important guidance for the nonlinear analysis and seismic resilience assessment of this kind of building.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Hui Zhao, Zhenhe Wang, Wenhao Zhang, Rui Wang, Dongdong Yang, Dennis Lam
Summary: In this study, the post-fire performance of round-ended recycled aggregate concrete-filled steel tubular (RE-RACFST) short columns was investigated through experiments and numerical simulations. The results showed that an increase in the recycled aggregate content led to a decrease in the bearing capacity and elastic stiffness of the RE-RACFSTs, as well as an earlier onset of the confining effect. Finite element models were also established and used to study the effects of key factors on the residual load-carrying capacity. Furthermore, a simplified formula was proposed to estimate the post-fire residual capacity of RERACFST stub columns.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Chengjun Tan, Tao Sun, Hua Zhao, Lei Tu, Dongqin Qiao, Xudong Shao
Summary: By combining UHPC layer with steel plates and RC structures, the proposed strengthening method effectively enhances the shear capacity of pre-damaged RC beams. The experimental results demonstrate promising applications for strengthening old/defective bridges.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Shujun Hu, Yuan Liao, Sizhi Zeng, Hai Huang, Yujie Yu
Summary: In this study, a new cross-section-type shear connector connection was proposed to improve the shear resistance in a prefabricated concrete frame-eccentrically steel brace structure. Experimental tests and numerical simulations were conducted, revealing that increasing the concrete strength, connector number, and connector section dimensions can enhance the shear stiffness and strength.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Yong Wang, Yong Du, Shaojun Zhu, Lei Huang
Summary: This study investigated the influence of temperature on the anti-sliding performance of prestressed parallel wire strand clamps (PWSCs) through experiments and numerical analyses. The study found that the anti-sliding resistance of the clamps decreases at high temperatures, the fire resistance time decreases with higher thrusting load levels, and the bolt pretension also decreases.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Hongbo Liu, Yixiao Zhou, Fei Wang, Yan Lu, Zhihua Chen
Summary: This study investigates the effects of low temperature and corrosion on the impact toughness of steel structures. It is found that both low temperature and corrosion can reduce the impact energy of the steel, with corrosion having a greater impact at low temperature.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)