Article
Engineering, Civil
Yuchen Song, Xue-Mei Lin, Michael C. H. Yam, Ke Ke
Summary: This study investigates the block shear behavior of austenitic stainless steel bolted connections (ASSBCs) through experimental and numerical methods. The findings reveal significant differences in the shear mechanism compared to mild steel bolted connections, leading to the proposal of an improved shear equation based on the available data.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Xi Guo, Pinelopi Kyvelou, Jun Ye, Lip H. Teh, Leroy Gardner
Summary: This experimental study investigates the structural behavior of steel double-lap shear bolted connections manufactured by Directed Energy Deposition-arc or wire arc additive manufacturing (DED-arc AM and WAAM). The material's mechanical properties were determined through tensile coupon tests, and sixty connection specimens with different thicknesses and print layer orientations were tested to failure. Various failure modes were observed, and a new hybrid mode of shear-out and net section tension was identified. The results were compared with current design specifications, and overall, the structural behavior of the specimens followed the anticipated trends, although there were exceptions that highlighted the need for new design provisions specific to this manufacturing method.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
TaeSoo Kim, SeongKyu Hong, BoKyung Hwang, JunSu Kim
Summary: This study aimed to validate the effectiveness of double-shear bolted connections fabricated with lean duplex stainless steel in ultimate strength and fracture mode, investigating the influence of parameters such as extended end distances and edge distances, and recommending a modified block shear strength equation.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Civil
Ke Jiang, Kang Hai Tan, Ou Zhao, Leroy Gardner
Summary: This study investigates the block tearing behavior and resistance of S700 high strength steel bolted connections under tension through experiments and numerical simulations. The existing design methods for high strength steel bolted connections susceptible to block tearing were found to provide conservative predictions of failure loads due to insufficient consideration of shear failure plane location and area. The proposals of Teh and Uz showed improvements in block tearing resistance predictions, but some resistances remained unsafe when applied to S700 high strength steel bolted connections, as demonstrated through statistical analyses.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Jelena Dobric, Yancheng Cai, Ben Young, Barbara Rossi
Summary: This study investigates the behavior of duplex stainless steel bolted connections and evaluates the ability of current stainless steel design specifications to predict their behavior. The results show that the Australian/New Zealand and American specifications provide more accurate predictions of the ultimate strength of bolted connections.
THIN-WALLED STRUCTURES
(2021)
Article
Construction & Building Technology
Xue-Mei Lin, Michael C. H. Yam, Ke Ke, Qun He, Kwok-Fai Chung
Summary: This study presents an investigation of the block shear strength of high strength steel bolted connections under double shear through experimental and numerical methods. The study comprehensively examines the effects of material properties on block shear strength and evaluates the accuracy of existing design equations for predicting block shear strength.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Chaowei Hao, Jiqing Luo, Bingjian Wang, Xinmin Zhang, Liangding Gan
Summary: This study conducted the first-ever field push test on anchor bolts in steel-UHPC composite pavement in China, providing researchers with the opportunity to obtain the true mechanical performance of the anchor bolts after more than a decade of operation. The study comprehensively studied the long-term performance of anchor bolts in steel-UHPC composite pavement by establishing a finite element model and analyzing the degradation of bolt performance.
Article
Construction & Building Technology
Xiaoyong Zhang, Xiang Lin, Linhao Sun, Yongchun Lei, Jincheng Chen, Hengzhou Lin, Yu Chen
Summary: This paper presents a study on the shear resistance of high-strength steel bolted connections with reduced tightening. The effects of different variables on the failure mode, strain distribution, slip resistance, shear capacity, initial stiffness and ductility of these connections are investigated. The study findings suggest that reducing the tightening torque decreases the slip resistance and shear capacity, while increasing the ductility of the connections. The degree of reduction in tightening torque has the greatest impact on the shear capacity of the specimen.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Huajie Wen, Hussam Mahmoud
Summary: Bolted connections are commonly used in civil and mechanical engineering applications, but concerns have been raised about the adequacy of design provisions in capturing connection strength. A recent study proposed an effective numerical method to predict ductile fracture in bolted connections accurately. The study found that plastic bearing deformations facilitate shear fracture initiation and uneven stress might occur along the shear failure path, leading to the proposal of new design equations that better reflect actual failure mechanisms in connections.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Engineering, Civil
Ke Jiang, Yating Liang, Ou Zhao
Summary: The existing standard framework for the design of high strength steel bolted connections is tedious and inaccurate. This paper introduces a predictive framework based on machine learning, which collects a large amount of data and develops models for more accurate predictions of failure load and mode.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Xi Guo, Pinelopi Kyvelou, Jun Ye, Lip H. Teh, Leroy Gardner
Summary: This paper presents an experimental investigation into the structural performance of wire arc additively manufactured (WAAM) steel single-lap shear bolted connections. The study found that current design specifications for conventional steel bolted connections could lead to significant overestimations and underestimations of the test capacities when applied to WAAM steel bolted connections.
THIN-WALLED STRUCTURES
(2022)
Review
Construction & Building Technology
Luciano M. Bezerra, Jorge Bonilla, Cleirton S. Freitas, Bruno Massicotte
Summary: This paper presents a comprehensive study on the structural behavior of bolted T-Stub connections fixed on a rigid base. Experimental and numerical research show that the resistance of T-Stubs is influenced by factors such as bolt positions, dimensions, and contact forces. It is found that the predictions of Eurocode-3 and AISC codes are inaccurate in determining the resistance of T-Stubs.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Yunyi Liu, Jun Ye, Yuanzhang Yang, Guan Quan, Zhen Wang, Weijian Zhao, Yang Zhao
Summary: This study investigates the material properties of WAAM steel and the structural behaviors of WAAM steel bolted connections, focusing on print layer orientation and connection plate geometrical dimensions. Different test specimens were designed, fabricated, and tested under monotonic tension to analyze the effects of print layer orientations on WAAM material properties and bolted connections. The study found that print layer orientations resulted in anisotropic material properties of the coupon specimens. The print layer orientations also affected the failure modes of the bolted connections, compromising the effectiveness of current steel design standards.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Jun Ye, Guan Quan, Xiang Yun, Xi Guo, Ju Chen
Summary: This paper introduces an accurate, efficient, and robust numerical method that can fully replicate the behavior of CFS connections considering both the effects of bolt slippage and bearing.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Jun Ye, Yunyi Liu, Yuanzhang Yang, Zhen Wang, Ou Zhao, Yang Zhao
Summary: Capitalizing on Wire and Arc Additive Manufacturing (WAAM), 3D printed steel has shown significant potential in manufacturing large-scale steel structural elements in the construction industry. This research focuses on the mechanical performance and failure modes of WAAM steel connections, as well as the evaluation of current design provisions and approaches. The study reveals the influence of anisotropic material properties and failure modes on the accuracy of predicting the ultimate capacity of WAAM steel connections, highlighting the need for further research on this topic.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Refat A. Bhuiyan, Lip H. Teh, Aziz Ahmed
Summary: This study investigated the potential applicability of the specification equation for the shear pull-out strength of a power-actuated fastener connection to nail connections between steel sheets thinner than 2.9 mm. Based on test results, a new design equation was proposed, along with suggested group effect factors and resistance factors for determining the pull-out strength of shear nailed connections in thin steel sheets. Additionally, it was found that the current design equation for PAF connections can be applied to connections with thinner member thicknesses and smaller fastener diameters than specified.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Construction & Building Technology
YongHyun Cho, Lip H. Teh, Ben Young
Summary: This study found that material ductility has a significant impact on the bearing strength of bolted connections, and the cooling method of ultra-high strength steel specimens after a fire also plays an important role. Additionally, air or water cooling may result in higher material ductility.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Engineering, Civil
Zhongxing Wang, Yuanqing Wang, Xiang Yun, Leroy Gardner, Lip H. Teh
Summary: This paper experimentally investigates the structural behavior and strength of swage-locking pinned aluminum alloy double-shear connections. It finds that current design provisions provide overly conservative strength predictions for this type of connection, with room for improvement in more efficient design equations.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Mechanical
M. E. Uz, M. D. Kop, E. M. Yildirim
Summary: The study analyzed the dent resistance of steel panels subjected to hailstone impact using a finite element model, comparing results from artificial and natural hailstones to evaluate material properties and simulation approaches.
EXPERIMENTAL TECHNIQUES
(2022)
Article
Engineering, Civil
Cao Wang, Lip H. Teh, Yue Li
Summary: This paper proposes a semi-analytical method for assessing the time-dependent reliability of steel pipelines exposed to localized corrosion. It considers corrosion perforation and local burst as failure modes and incorporates a spatial-temporal Poisson model and Nataf transformation method to account for the spatial correlation of corrosion defects and adjacent segments.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Engineering, Civil
Xing Gao, Wei Wang, Lip H. Teh, Lijun Zhuang
Summary: This paper presents the experimental results of a novel Slip-Critical Blind Bolt (SCBB) system used to connect an H-beam to a hollow section column. The behavior and strength of the connection under tension, shear, and combined loading were studied. The test specimens exhibited stable bolt pretension and higher load-bearing capacity than the design values. The ultimate tensile loads and shear loads were found to be higher than the nominal strengths.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Jun Ye, Guan Quan, Pinelopi Kyvelou, Lip Teh, Leroy Gardner
Summary: This study introduces a practical numerical method for accurately simulating the structural behavior of bolted cold-formed steel connections. By introducing solid elements around the bolt holes in a shell finite element model of cold-formed steel plate, the characteristics of bolt-ply interaction can be accurately replicated, with contact pairs defined between bolts and the surrounding material. An explicit dynamic solver is used to solve the nonlinear problem, and validation results show that the proposed method is computationally efficient and numerically stable.
Article
Engineering, Civil
Cao Wang, Lip H. Teh
Summary: This study proposes a closed-form solution for time-dependent seismic reliability analysis of deteriorating structures. The capacity deterioration is captured by the generalized capacity and deterioration function, and the Frechet distribution is used to describe the probabilistic behavior of the peak ground acceleration. The proposed method simplifies the computation process, making it practical for engineering applications.
ASCE-ASME JOURNAL OF RISK AND UNCERTAINTY IN ENGINEERING SYSTEMS PART A-CIVIL ENGINEERING
(2022)
Article
Engineering, Civil
Refat A. Bhuiyan, Aziz Ahmed, Lip H. Teh
Summary: This study investigates potential solutions for using high-strength cold-reduced sheet steels as tension strap braces in low seismic regions. Experimental and finite element analysis results suggest that braces with rounded slot ends have better fabrication and deformation capacity, avoiding fracture at the slot end. Shear panel test results show that the deformation capacity of the shear panel can be controlled by the slot length.
PRACTICE PERIODICAL ON STRUCTURAL DESIGN AND CONSTRUCTION
(2022)
Article
Engineering, Civil
Amin Izadi, Lip H. Teh, Maria Anna Polak, Aziz Ahmed
Summary: The first objective of this paper is to propose a simple and effective refinement to the concrete damage plasticity model used in finite element analysis of confined concrete columns. The second objective is to use this refinement to study square FRP-Concrete-Steel columns and validate the performance of rotating inner steel tubes.
Article
Engineering, Civil
Xi Guo, Pinelopi Kyvelou, Jun Ye, Lip H. Teh, Leroy Gardner
Summary: This paper presents an experimental investigation into the structural performance of wire arc additively manufactured (WAAM) steel single-lap shear bolted connections. The study found that current design specifications for conventional steel bolted connections could lead to significant overestimations and underestimations of the test capacities when applied to WAAM steel bolted connections.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Xi Guo, Pinelopi Kyvelou, Jun Ye, Lip H. Teh, Leroy Gardner
Summary: This experimental study investigates the structural behavior of steel double-lap shear bolted connections manufactured by Directed Energy Deposition-arc or wire arc additive manufacturing (DED-arc AM and WAAM). The material's mechanical properties were determined through tensile coupon tests, and sixty connection specimens with different thicknesses and print layer orientations were tested to failure. Various failure modes were observed, and a new hybrid mode of shear-out and net section tension was identified. The results were compared with current design specifications, and overall, the structural behavior of the specimens followed the anticipated trends, although there were exceptions that highlighted the need for new design provisions specific to this manufacturing method.
ENGINEERING STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Mehmet Eren Uz, Anna Jakubczyk-Galczynska, Robert Jankowski
Summary: This study focuses on the pounding between two adjacent asymmetric structures with different dynamic properties resting on the surface of an elastic half-space. The authors have proposed a procedure for analyzing the response for adjacent buildings subjected to the pounding effects, considering systems with multiple degrees of freedom and modal equations of motion with four types of soil. The results show that the approximate method produces slightly different results from the rigorous direct integration method in the case of small SSI effects due to an increase in the pounding force, but the method is efficient and validated using numerical examples.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Civil
Amin Izadi, Lip H. Teh, Aziz Ahmed, Maria Anna Polak
Summary: This paper presents the development of a finite element methodology for investigating the behavior of a square FRP-concrete-steel composite (FCSC) column with a rotated square inner steel tube. The methodology is verified against experimental test results and is used to explain the column behavior and failure. The findings indicate that concrete failure may precipitate premature FRP rupture and rotating the inner steel tube improves the resistance and ductility of the column.
Article
Engineering, Civil
Xing Gao, Wei Wang, Lip H. Teh
Summary: This paper presents experimental and numerical investigations of a Concrete-Anchored Slip-Critical Blind Bolt (CASCBB) system. The effects of different parameters on the system's performance are studied, including concrete infill, bolt types, anchor stud threading, tube thickness, and bolt edge distance. The finite element analysis shows that the steel tube's flange significantly contributes to the system's resistance, and placing the anchored bolt close to the tube's web enhances stiffness and load-carrying capacity. The threading of the anchor stud has no noticeable effects on the system's performance.
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)