Article
Engineering, Civil
Hao Meng, Wei Wang, Rongqiao Xu
Summary: An analytical model was proposed to describe the shear behaviors of headed stud shear connectors by analyzing load-slip curves and failure modes, leading to successful prediction of load-slip curves.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Jiepeng Liu, Jincheng Xie, Gang Xiong, Xuanding Wang, Yunhe Zou, Rui Shu, Frank Chen
Summary: Full-scale push-out tests were conducted to study the shear behavior of HSBCs in prefabricated steel-concrete composite bridge beams. The tests considered key parameters including steel block height, longitudinal connector spacing, presence of oblique rebars in the precast slab, and grouting material. The results showed that HSBCs have large shear stiffness, high shear capacity (approximate to 1500kN), and sufficient deformability. The height and spacing of HSBCs were identified as the two principal parameters affecting shear capacity and failure mode.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Huawen Ye, Ruosen Huang, Shiqing Tang, Yu Zhou, Jilin Liu
Summary: A unified framework was used to develop a general expression of shear load-slip equation for headed-stud shear connectors. Through regression analysis and sensitivity analysis using a push-out test database, an empirical calculation model for shear stiffness was established, which outperforms previous models in predicting shear load-slip response and stiffness of the connectors.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Multidisciplinary Sciences
P. Naveenkumar, R. Prakash, P. Sangeetha
Summary: Space trusses are used as three-dimensional frames in industrial structures, providing greater span capabilities. The weight and stiffness-to-weight ratio of a space truss structure are advantageous. The concrete slab over the upper chords of the space trusses helps overcome buckling issues, and the composite action between the slab and truss is crucial for load support.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Civil
Jing Zhang, Xiamin Hu, Junyi Wu, Yun Mook Lim, Shuhong Gong, Renwei Liu
Summary: The study investigated the performance of stud connectors in steel-MPC based HSC composite beams, with significant improvements in shear behavior observed with increasing stud diameter. Aspect ratio, concrete strength, and type had minor effects on shear capacity but noticeable impacts on shear stiffness and ductility.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Chengqian Wen, Guotao Yang
Summary: To improve the fabrication efficiency and address the contradiction between construction progress and structural performance in composite structures, the shear performance of stud connections with different concrete ages was analyzed. 18 typical vertical push-out tests were conducted on stud shear connectors at concrete ages of 7 days, 14 days, and 28 days. The effects of concrete age, stud spacing, and stud diameter on the shear capacity, connection stiffness, and failure mode of the connectors were studied. A new relationship expression for load-slip of stud connectors with various concrete ages was proposed, and a more practical prediction equation for the shear capacity of stud connectors with different concrete ages was established by evaluating the existing design code.
STEEL AND COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Jingjing Qia, Zuwei Xie, Hua Cao, Zhi Huang, Weirong Lv, Weihua Shi
Summary: A stud shear connector with constraint measure is proposed in this paper to solve the problem of pry-out local splitting. The interface shear behavior of the new connector is studied through push-out test, and it is compared with the traditional stud connector. The results show that the stud shear connector with constraint measure can effectively avoid the adverse effect of local pressure splitting and improve the shear stiffness between steel and concrete flange plates, providing a theoretical basis for the design of strong connection coefficient of steel-concrete composite structures.
STRUCTURAL ENGINEERING AND MECHANICS
(2022)
Article
Construction & Building Technology
Chae-Rim Im, Sanghee Kim, Ju-Hyun Mun, Keun-Hyeok Yang, Jae-il Sim
Summary: In this experimental study, push-out tests were conducted to evaluate the shear strength of louver steel plates with different types of shear connectors. It was found that the use of louver steel plates increased the shear strength of the specimens compared to plain steel plates, and the increased strength was approximately 88% of the theoretical bearing strength of the louvers. The slip capacity of the headed studs satisfied the specified criteria, while the lattice shear connectors did not due to insufficient welding length.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Kaipei Tian, Josko Ozbolt
Summary: This study investigates the pry-out failure of single headed stud anchors after fire exposure using experimental and numerical methods. The research shows that the load-bearing behavior of anchors is influenced by concrete compressive strength, embedment depth, and fire duration. The numerical simulations successfully predict the pry-out failure mode and load bearing behavior of anchors after fire exposure, indicating a need for improvement in current design formulas.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Fangwen Wu, Wenlong Tang, Shuo Liu, Zhou Fan, Fei Yang
Summary: This study investigates the shear behaviors of welded stud and perfobond rib connectors used in steel-HSFRC composite girders. The experimental results demonstrate that the shear capacity and stiffness of these connectors are improved in the composite girders, while the ductility decreases. Factors such as stud diameter and perforating rebar diameter have significant effects on the shear behavior of these connectors. Prediction equations for shear capacity are proposed and verified to be accurate and applicable.
Article
Construction & Building Technology
Ran An, Youzhi Wang
Summary: This research investigates the performance of shear stud connectors under combined shear and tension force through experimental and numerical analysis. The experimental results show that the shear capacity and shear stiffness of shear stud connectors decrease as the tension force ratio increases. The numerical models established using ABAQUS further validate the experimental results and reveal the influence of concrete strength, reinforcement ratio, and stud diameter on the performance of shear stud connectors.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
Article
Chemistry, Physical
Kai Peng, Laijun Liu, Fangwen Wu, Ruizheng Wang, Song Lei, Xiaoyu Zhang
Summary: This study investigates the shear performance and failure mechanism of stud shear connectors in steel fiber-reinforced cementitious composite (SFRCC) beams. Experimental results show that the existence of high-strength steel fibers in SFRCC beams effectively restrains crack development, resulting in significantly higher shear resistance and stiffness of the stud shear connectors compared to normal concrete specimens. However, their ductility is reduced, leading to premature failure. Finite element (FE) analysis reveals that increasing concrete compressive strength, stud diameter, and tensile strength significantly improve the shear resistance of the stud shear connectors. The aspect ratio of the studs has a small impact on their ultimate resistance. Empirical formulas are proposed to predict the load-slip curves and ultimate shear resistance of stud shear connectors in steel-SFRCC specimens, providing higher accuracy and a wider application range than previous formulas.
Article
Engineering, Civil
Yan Meng, Wang Lian-guang, Chen Bai-ling
Summary: Bending tests were conducted on steel-concrete-steel (SCS) sandwich panels with headed studs to investigate their mechanical behavior. The effects of loading mode, steel plate thickness, concrete core thickness, and connectors spacing were considered. The research results were validated using finite element model (FEM) and further studies were conducted to analyze the load-bearing capacity and shear resistance of the sandwich structure. The findings will have an impact on predicting the large deformation and ultimate strength of sandwich protective panels.
Article
Chemistry, Physical
Hao Meng, Wei Wang, Rongqiao Xu
Summary: This paper analyzes the load-slip curves of existing headed stud connectors and proposes a trilinear model for their slip deformation. It also presents analytical formulas for the stiffness and strength of headed stud shear connectors.
Article
Construction & Building Technology
Li Song, Siqi Fang, Chenxing Cui, Zhiwu Yu, Zhichao Wang
Summary: A new theoretical calculation method based on Winkler's elastic foundation beam theory and deflection differential equation of the stud is proposed to determine the load-slip curve and shear stiffness of the stud. The method takes into account the stress characteristics of the elastic and plastic zones of the concrete, and its accuracy is validated by experimental results. The study also analyzes the impact of concrete strength, stud diameter, and yield strength on the stud load-slip curve.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
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)