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
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
Fei Yang, Yuqing Liu, Haohui Xin, Milan Veljkovic
Summary: This paper presents a series of simulations on a demountable steel-concrete bolted connector in push-out tests, incorporating damage models of bolt and concrete materials to better understand the behavior of the connector. Results indicate that friction force at the steel-concrete interface contributes to the shear resistance of the connector, with load-slip curves and bolt fractures being approximately predicted by considering damage models and friction coefficient. Experiments on concrete damage model, bolt hole clearance, and pretension of short bolt are also discussed regarding shear performance.
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
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
Construction & Building Technology
Hailin Yang, Yan Zheng, Shixu Mo, Penghui Lin
Summary: To overcome the high cost of ultra-high-performance concrete (UHPC) and improve the performance of studs in steel-concrete composite bridges, a new bridge slab system has been developed. Experimental results show that the mechanical behavior of studs in this composite slab system has been successfully improved and the current design codes underestimate the shear strength of studs with UHPC cover.
CONSTRUCTION AND BUILDING MATERIALS
(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
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
Engineering, Civil
Yang Zou, Hongbo Peng, Zhongya Zhang, Jinlong Jiang, Jincen Guo
Summary: Perfobond shear connector is widely used in steel-concrete composite structures due to its high ultimate shear capacity, large shear stiffness, and excellent fatigue resistance. This study investigates the mechanical properties of perfobond connectors considering the confinement effect caused by restrained rebar and contact friction. The results show that the shear capacity, shear stiffness, and ductility of the connectors can be significantly improved by the presence of restrained rebar and contact friction. A simplified mechanical model and an empirical formula are proposed to accurately predict the shear capacity of perfobond connectors.
Article
Multidisciplinary Sciences
Mohammad Mehdi Ahmadi, Seyed Rasoul Mirghaderi, Nasrin Bakhshayesh Eghbali
Summary: The effective transfer of shear forces and limiting slippage to achieve appropriate composite behavior is crucial in steel-concrete joints. Rigid shear connectors are recommended due to their high strength, stiffness, and small dimensions in the joint area of composite structures. Experimental and finite element modeling studies demonstrate that rigid shear connectors can transfer high levels of forces with minimal slippage and without resistance-decline in a confined condition.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Construction & Building Technology
Senthilkumar Rajendran, Jayabalan Perumalsamy, Divya Mohanraj
Summary: This study assessed the performance of shear connectors for cold-formed elements, including single-channel, double channel, and self-tapping screw connectors. The results showed that double channel connectors had higher initial stiffness and ductility, while self-tapping screws had a higher strength to weight ratio but lower ductility.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Zhen Fang, Shu Fang, Feng Liu
Summary: Steel-UHPC composite beams have many advantages, but little research has been done on the shear performance of short stud shear connectors. This study conducted push-out tests to evaluate the impact of slab thickness, stud diameter, and casting method on shear performance, and established a finite element model for further exploration.
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
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, Chemical
P. L. Rosendahl, Y. Staudt, C. Odenbreit, J. Schneider, W. Becker
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2019)
Article
Engineering, Civil
A. Kozma, C. Odenbreit, M. Braun, M. Veljkovic, M. P. Nijgh
Article
Engineering, Civil
T. Bogdan, M. Chrzanowski, C. Odenbreit
Article
Engineering, Civil
C. Odenbreit, M. Chrzanowski, R. Obiala, T. Bogdan, H. Degee
Article
Engineering, Civil
Valentino Vigneri, Christoph Odenbreit, Alfredo Romero
Summary: This study evaluates the performance of simply supported propped composite beams with ductile shear connectors using finite element analysis. The revised rules are found to reduce the risk of slip in the structures.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
M. Chrzanowski, C. Odenbreit, R. Obiala, T. Bogdan, H. Degee
Summary: Eurocode 4 only allows single steel profile and double symmetry cross-sections for analysis of steel-concrete composite columns, but real-world examples often involve multiple embedded steel profiles. Traditional analytical methods based on Euler-Bernoulli beam theory may not accurately predict column deformations, while a modified approach combining Timoshenko beam theory and Vierendeel truss model can provide more realistic stiffness analysis and ultimate load assessment.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Engineering, Civil
Valentino Vigneri, Robert Kroyer, Andreas Taras
Summary: This paper presents an experimental study on composite steel truss in concrete (CSTC) beams, which consist of prefabricated structural steel latticed girders embedded in concrete. The research investigates the shear transfer mechanism and resistance of CSTC beams and finds that it is mainly governed by localized concrete failure and plastic bending deformation of the diagonal bars. The experimental results show that the sinusoidal web bars in CSTC beams have significant slip capacity.
Article
Chemistry, Physical
Alfredo Romero, Christoph Odenbreit
Summary: This study presents a testing campaign aimed at evaluating the strength and stiffness properties of laminated veneer lumber (LVL) specimens. Different behaviors were observed in different directions, with the longitudinal direction exhibiting the highest stiffness and strength, which provides valuable insights for engineering applications.
Article
Construction & Building Technology
Valentino Vigneri, Stephen J. Hicks, Andreas Taras, Christoph Odenbreit
Summary: This paper presents the results of reliability analyses comparing the current Eurocode 4 and AISC 360-16 design models for predicting the resistance of headed stud shear connectors within profiled steel sheeting. The study found that the current design rules deliver significantly higher safety factors than the target values, but the alternative Luxembourg model performs well. Therefore, it is recommended to include the Luxembourg model in the second generation of Eurocodes.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Maxime Turetta, Christoph Odenbreit, Abdelouahab Khelil, Pierre-Olivier Martin
STEEL AND COMPOSITE STRUCTURES
(2020)
Article
Construction & Building Technology
Valentino Vigneri, Christoph Odenbreit, Dennis Lam
STEEL CONSTRUCTION-DESIGN AND RESEARCH
(2019)
Article
Construction & Building Technology
Maciej Chrzanowski, Christoph Odenbreit, Renata Obiala, Teodora Bogdan, Herve Degee
STEEL CONSTRUCTION-DESIGN AND RESEARCH
(2019)