Article
Engineering, Civil
Chi Chiu Lam, Yufei Zhang, Jiaming Gu, Jingming Cai
Summary: This paper investigates the reinforcing strategies of carbon fiber reinforced polymer (CFRP) plates for coped steel beams. Experimental results show that CFRP plates can effectively improve the load carrying capacity and resist local web buckling of coped beams. The reinforcing effect is more prominent with more layers of CFRP plates, and CFRP plates with inclined pasting angles can also provide higher post-peak ductility. The research findings provide reference for the design of single coped beams in practical engineering.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Christopher Yassopoulos, Carl Leake, J. N. Reddy, Daniele Mortari
Summary: The study introduces an alternative numerical approach using the Theory of Functional Connections (TFC) for solving boundary value problems in solid mechanics, showing that TFC outperforms FEM when the analytical solution is continuous and smooth, but underperforms when higher order derivatives of the analytical solution are discontinuous.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2021)
Article
Engineering, Civil
Benjamin L. Worsfold, Jack P. Moehle
Summary: Recent studies have found that the strength of column-foundation connections carrying moment can be constrained by the concrete breakout failure mode. The use of distributed shear reinforcement in the concrete breakout cone region has been observed to increase the strength and displacement capacity of structural connections governed by breakout. However, the ACI 318-19 building code does not allow designers to consider this strength increase. Instead, it permits the use of anchor reinforcement while disregarding the concrete contribution to strength. This paper proposes a design methodology that accounts for the additive effect of both concrete and reinforcement to calculate the breakout strength. The proposed strength equations are calibrated using physical test data and finite element simulations from previous studies. Detailing requirements are also discussed.
ENGINEERING STRUCTURES
(2023)
Article
Mechanics
Guoxiong Chen, Ru An, Jianfei Xu, Shihua Fu
Summary: In this study, a model was developed to predict tension stiffening in FRP RC beams with different reinforcement ratios. By introducing a correction factor, the model successfully corrected the results of finite element analysis and matched the experimental results. Uneven distributions in the strain of FRP bars were also observed in the study.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Multidisciplinary
Yueqiao Jia, Jeffrey C. L. Chiang
Summary: Shear reinforcement is a common method to strengthen slab-column connections. This study investigates the reduction effect of shear reinforcement on bending moment in unbalanced conditions. Through nonlinear finite element analysis, the study explores the effects of shear reinforcement quantity, diameter, and loading methods on the slab. A corrected moment transfer coefficient formula is proposed for more accurate calculations.
APPLIED SCIENCES-BASEL
(2022)
Article
Construction & Building Technology
Huajie Wen, Hussam Mahmoud
Summary: This study evaluates the appropriateness of existing provisions for predicting the strength of coped beam connections with two bolt lines. The results show that the finite rotational stiffness of the connecting components is the primary cause of irregular stress distribution, and the existing code equations are unable to accurately capture the behavior of the connections. A new design equation for predicting block shear strength is proposed.
JOURNAL OF STRUCTURAL ENGINEERING
(2022)
Article
Engineering, Civil
Sabra Bougoffa, Omar Mezghanni, Sebastien Durif, Abdelhamid Bouchair, Atef Daoud
Summary: This paper presents experimental results evaluating the strength of steel panels with various transverse stiffener configurations under concentrated load, validating finite element models. Comparison with existing analytical formulas helps calibrate the nonlinear model and evaluate accuracy.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Chi Chiu Lam, Jiaming Gu, Yufei Zhang, Guanhua Li, Jingming Cai
Summary: This study investigates the feasibility of reinforcing single-coped steel beams with carbon fiber reinforced polymer (CFRP) plates, finding that the application of CFRP plates effectively prevents the development of buckling lines and can triple the load carrying capacity of the beams. A novel finite element (FE) model is proposed and verified, and a simplified design method for CFRP reinforced single-coped beams is proposed based on experimental and simulational results.
ENGINEERING STRUCTURES
(2021)
Article
Green & Sustainable Science & Technology
Jian-Xu Wang, Wen-Bin Su, Ji-Chao Li, Chun-Ming Wang
Summary: This paper proposes a trapezoid piezoelectric cantilever beam to improve the output of rotational piezoelectric energy harvesters. The finite element simulation and experimental results demonstrate that the trapezoid beam harvester can bear higher stress and exhibit excellent electrical output properties. The harvester has the characteristics of up-conversion frequency and ring-down pattern. Experimental results show that the prototype trapezoid beam harvester can generate a high average output power density under the matching impedance.
Article
Engineering, Civil
Jae Young Lee, Hee Ryong Ryu
Summary: This paper presents a new type of interface element to model the semi-rigid behavior of cross-over connections, and discusses its application to the structural analyses of steel pipe-framed greenhouses. The results of numerical case studies show that using the interface elements changes the collapse mechanism of the structure, causing significant differences in the results of the structural analysis.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Fangfang Liao, Kaoshi Zhang, Wei Wang, Yiyi Chen, Shukai Tang, Xiao Xue, Chao Li
Summary: Finite element models were established to predict the ductile fracture of beam-column connections with initial defects, and J-integral, VGM, and SMCS model were used for fracture prediction. The results showed that initial defect location, length, notch radius, and weld access hole form had influences on fracture index. This study provided theoretical support for predicting the fracture of beam-column connections.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Geological
Wei Li, Heng Ye, Hengjun Liu, Baixi Chen
Summary: Three novel demountable RCS joints were developed to achieve the disassembling and recycling of structure members. Through experimental and numerical investigations, it was found that the demountable joints exhibited larger lateral capacity and better energy absorption than the non-detachable joints.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Construction & Building Technology
Hussein M. Elsanadedy, Yousef A. Al-Salloum, Mohammed A. Alrubaidi, Tarek H. Almusallam, Husain Abbas
Summary: This paper investigated the risk of progressive collapse of precast concrete beam-to-column connections rehabilitated with steel plates under middle column-loss event, using finite element method. Nonlinear FE models were established and validated, considering material nonlinearity and contact behavior between different members. Parametric studies were conducted to assess the influence of steel plate parameters.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Engineering, Civil
M. Basterrechea-Arevalo, M. Schweigler, R. Lemaitre, T. K. Bader
Summary: In recent years, the use of timber in construction has increased due to its renewable nature, lower climate impact, and increased economic competitiveness. Predicting the connection behavior is crucial for a more economic and reliable design in timber structures. This study proposes a Beam-On-Foundation (BOF) method to analyze and predict the connection performance, demonstrating its feasibility in terms of computational efficiency and comprehensive connection model.
ENGINEERING STRUCTURES
(2023)
Article
Computer Science, Interdisciplinary Applications
Christopher Yassopoulos, J. N. Reddy, Daniele Mortari
Summary: In this paper, the Theory of Functional Connections (TFC) is applied to analyze static beams, considering the von Karman nonlinearity and using the Timoshenko-Ehrenfest beam theory. The authors extend their previous framework on linear beam bending problems to nonlinear bending problems using TFC. They compare the TFC results and performance parameters with those of the Finite Element Method (FEM) to validate the TFC solutions and compare computational efficiencies. The paper also introduces and validates a TFC methodology for solving buckling and free vibration problems in linearized Timoshenko-Ehrenfest beam equations. The results suggest that TFC provides more accurate solutions and faster solution time compared to FEM using linear or quadratic approximations, with the added benefit of calculating continuous and smooth stress fields.
MATHEMATICS AND COMPUTERS IN SIMULATION
(2023)
Article
Engineering, Civil
Cheng Fang, Yiwei Ping, Yiyi Chen, M. C. H. Yam, Junbai Chen, Wei Wang
Summary: This study introduces a novel hybrid self-centering system that aims to overcome critical shortcomings found in existing solutions. By incorporating shape memory alloy elements and integrated viscoelastic dampers, the system effectively controls peak and residual deformation, as well as floor acceleration. The study also conducts a parametric analysis and provides design recommendations, along with proposing a probability-based residual deformation prediction model.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Civil
Xue-Mei Lin, Michael C. H. Yam, Kwok-Fai Chung, Ke Ke, Qun He
Summary: This study investigates the structural behavior and ultimate strength of high strength steel staggered bolted connections under tension through experimental testing and finite element analysis. The results show that HSS specimens generally have lower connection efficiency and overall deformation capability compared to mild steel specimens, but their net section resistance can generally meet the predicted values.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
JingZhou Zhang, Michael C. H. Yam, Ran Feng
Summary: Previous studies have mainly focused on single column loss in steel frames, with limited research on multi-column loss. This paper investigates the collapse resistance of steel frames in scenarios where two interior columns are removed, and finds that different scenarios exhibit different characteristics.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Engineering, Civil
Xuhong Zhou, Ke Ke, Michael C. H. Yam, Qingyang Zhao, Yun Huang, Jin Di
Summary: This study investigated the hysteretic behavior of commercial Shape Memory Alloy (SMA) plates, focusing on cyclic tension-release behavior. It was found that training cycles could stabilize the behavior of specimens, but also reduced energy dissipation of SMA plates.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Civil
Ke Ke, Mingyuan Zhang, Michael C. H. Yam, Angus C. C. Lam, Junjie Wang, Binghui Jiang
Summary: This study investigates the block shear performance of 16 steel angle specimens connected by double-line bolts, characterizing different fracture patterns and evaluating the accuracy and adequacy of design specifications and equations through experimental and numerical analyses.
THIN-WALLED STRUCTURES
(2022)
Article
Construction & Building Technology
Xuhong Zhou, Yonghui Chen, Ke Ke, Michael C. H. Yam, Hong Li
Summary: This study quantified inelastic seismic demand of hybrid steel staggered truss frame (SSTF) with damage-control behavior using a probabilistic seismic demand spectral surface model. It was found that spectral energy modification coefficients followed a positively skewed probabilistic distribution and were significantly affected by structural parameters and statistical features of earthquake motions. Empirical expressions for the coefficients considering essential parameters were established, and finite element modeling techniques for developing the hybrid SSTF were verified through experimental data. The hybrid SSTF showed favorable damage-control behavior, concentrating inelastic actions in low yield point steel dampers, with insignificant post-earthquake residual deformations. The proposed spectral energy modification coefficient surface model was confirmed adequate for evaluating SSTF's damage-control behavior.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Jing-Zhou Zhang, Michael C. H. Yam, Guo-Qiang Li, Yuan-Zuo Wang
Summary: This paper numerically studies the anti-collapse behavior of modular steel buildings in the scenario of module removal. It examines the reasonability of using rigid body assumption in collapse analysis and incorporates a refined fracture model of the steel. The effects of various parameters on collapse resistance and failure mode are studied, and it is found that the opening size of the wall panel has the most significant influence. The paper also obtains the dynamic amplification factor (DAF) of the structures at the collapse limit state.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Jing Bian, Xuhong Zhou, Ke Ke, Michael C. H. Yam, Yuhang Wang
Summary: The based-isolation with tuned mass damper inerter (BI-TMDI) is used to improve the seismic response of steel High-voltage substation switches mounted on frame (SMF). An analytical model with three degree-of-freedom is explored for optimization and seismic design. The displacement variance of the SMFBI-TMDI system is obtained using statistical Cauchy's residue theorem and a comprehensive parametric analysis is performed. The proposed analytical model is validated through time history response analysis and shows improved accuracy compared to conventional models. This innovative control method and optimization analysis in BI-TMDI highlight its potential for enhanced vibration control in steel substations under earthquake motions.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Ke Ke, Xuhong Zhou, Huanyang Zhang, Michael C. H. Yam, Lihua Guo, Yonghui Chen
Summary: This study focuses on the development of a direct-iterative design method for steel moment resisting frames equipped with superelastic shape memory alloy connections. By utilizing an equivalent single-degree-of-freedom oscillator and nonlinear spectral analyses, a seismic demand model for inelastic structures was developed. The proposed design methodology allows engineers to search for feasible strategies for performance-based-plastic design.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Binhui Jiang, Zhongyuan Yin, Michael C. H. Yam, Jingzhou Zhang, Liping Wang
Summary: This paper investigates the influence of rotational restraints on the response of H-section steel columns under fire using a validated numerical model. The study identifies three failure scenarios based on different rotational restraint stiffness ratios, as well as a critical value where the influence of rotational restraints becomes negligible. The failure scenarios and critical values are dependent on parameters such as slenderness ratio, axial restraint stiffness ratio, and load ratio.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Review
Construction & Building Technology
Timothy O. Olawumi, Daniel W. M. Chan, Stephen Ojo, Michael C. H. Yam
Summary: The Modular integrated construction (MiC) method has gained significant attention in recent years. However, there has been a lack of critical review and analysis on the implementation of digital tools and technologies (DTT) in MiC projects. This study addresses this gap by evaluating the use of DTT in modular construction research through data curation, science mapping, and systematic analysis. The findings highlight the minimal use of DTT in the MiC prefab transportation phase and the potential of blockchain and other integrated DTT in MiC projects.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Ke Ke, Xuhong Zhou, Min Zhu, Michael C. H. Yam, Yuhang Wang, Huanyang Zhang
Summary: This paper presents a performance-spectra-based method for evaluating the seismic performance of industrial steel moment resisting frames (MRFs) with shape memory alloys (SMAs). The method considers multi-performance indicators and hysteresis transition to establish a space for quantifying the seismic behavior of the MRFs. The effectiveness of the proposed method is confirmed through the evaluation of two prototype steel MRFs equipped with SMA connections.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Wei Wang, Cheng Fang, Yuezhen Ji, Yongchang Lu, Michael C. H. Yam
Summary: The study demonstrated that the Fe-Mn-Si alloy dampers exhibit superior low-cycle fatigue resistance and energy dissipation capacity compared to conventional steel dampers, with up to 10 times longer fatigue life. The use of buckling-restraining plates further enhances their performance.
JOURNAL OF STRUCTURAL ENGINEERING
(2022)
Article
Engineering, Civil
Ghazaleh Soltanieh, Michael C. H. Yam, Jing-Zhou Zhang, Ke Ke
Summary: Layer separation is a critical threat to fiber-reinforced polymer plates under various loads. This study presents a method using shape memory alloy stitches to suppress delamination growth and improve buckling behavior, with closed-form formulation and finite element method for evaluation and validation of buckling loads.
STRUCTURAL ENGINEERING AND MECHANICS
(2022)
Article
Engineering, Civil
Jian Xue, Weiwei Zhang, Jing Wu, Chao Wang, Hongwei Ma
Summary: This study integrates a plate-type local resonator with varying free boundaries within a plate to convert the initial low-order global vibration modes into localized vibration modes. A novel semi-analytical method is proposed to analyze the free vibration of the plate with thickness and displacement discontinuities. The results show that by applying free boundary conditions, the low-order localized vibration frequencies can be significantly reduced without affecting the low-order global frequencies.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Merve Tunay
Summary: In recent years, there has been an increasing number of studies on the mechanical properties of sandwich structures manufactured with the Fused Deposition Modeling (FDM) method. However, there is still a lack of experimental data on the mechanical characteristics of FDM-manufactured sandwich structures under different thermal aging durations. In this experiment, the energy absorption capabilities of sandwich structures with different core geometries were investigated under various thermal aging durations. The results showed that the core topology significantly influenced the energy absorption abilities of the sandwich structures.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Zi-qin Jiang, Zi-yao Niu, Ai-Lin Zhang, Xue-chun Liu
Summary: This paper proposes a crosssection corrugated plate steel special-shaped column (CCSC) that improves the bearing capacity and overall stability of structural columns by using smaller material input. Through theoretical analysis and numerical simulation, the overall stability of the CCSC under axial compression is analyzed. The design method and suggestions for the stability of CCSC are put forward. Compared with conventional square steel tube columns, the CCSC has obvious advantages in overall stability and steel consumption.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yong Zhang, Yangang Chen, Jixiang Li, Jiacheng Wu, Liang Qian, Yuanqiang Tan, Kunyuan Li, Guoyao Zeng
Summary: A hybrid TPMS method was proposed to develop a new TPMS structure, and the mechanical properties of different TPMS structures were studied experimentally and numerically. Results showed that the hybrid TPMS structure had higher energy absorption and lower load-carrying capacity fluctuation. Further investigations revealed that the topological shape and material distribution had significant influence on mechanical properties, and the hybrid additive TPMS structure exhibited significant crashworthiness advantage in in-plane crushing condition.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Tongfei Sun, Ye Liu, Kaoshan Dai, Alfredo Camara, Yujie Lu, Lijie Wang
Summary: This paper presents a series of experimental and numerical studies on the performance of a novel double-stage coupling damper (DSCD). The effects of damper configuration, friction-yield ratio (Rfy), and loading protocol on the hysteresis performance of the DSCD are investigated. The test results demonstrate that the arrangement of ribs in the DSCD increases its energy dissipation capacity. Numerical analysis reveals that the length of the friction mechanism and the clearance between the yield segment and the restraining system affect the energy dissipation and stability of the damper.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Jeonghwa Lee, Young Jong Kang
Summary: This study investigates the local buckling behavior and strength of I-shape structural sections by considering flange-web interactions through three-dimensional finite element analysis. The study provides a more reasonable estimation of local buckling strength by considering the ratio of flange-web slenderness and height-to-width ratio, and presents design equations for flange local and web-bend buckling coefficients.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yizhe Chen, Wenfeng Xiang, Qingsong Zhang, Hui Wang, Lin Hua
Summary: This study investigates the surface modification of a nickel plate to improve the bonding strength with carbon fiber-reinforced plastics (CFRP). The results show that different surface modification methods, including sandblasting, coupling agent treatment, and compound coupling agent treatment, significantly enhance the bonding strength of CFRP/Ni joints. The research provides insights into improving the connection between nickel and CFRP, as well as other heterogeneous materials.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Agha Intizar Mehdi, Fengping Zhang, Moon-Young Kim
Summary: A spatial stability theory of mono-symmetric thin-walled steel beams pre-stressed by spatially inclined cables is derived and its validity is demonstrated through numerical examples. The effects of initial tension, deviator numbers, inclined cable profiles, and bonded/un-bonded conditions on lateral-torsional buckling of the pre-stressed beams are investigated, with a specific emphasis on the effects of increasing initial tension.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Teng Ma, Jinxiang Wang, Liangtao Liu, Heng Li, Kui Tang, Yangchen Gu, Yifan Zhang
Summary: The structural response of water-back plate under the combined action of shock wave and bubble loads at water depths of 1-300 m was numerically investigated using an arbitrary Lagrange-Euler method. The accuracy of the numerical model was validated by comparing with experimental and theoretical results. The influences of water depth and length-to-diameter ratio of the charge on the combined damage effect were analyzed. The results show that as water depth increases, the plastic deformation energy of the water-back plate decreases, and the permanent deformation mode changes from convex to concave. When the charge has a large length-to-diameter ratio, the plastic deformation energy of the radial plate is higher than that of the axial plate, and the difference decreases with increasing water depth. Increasing the length-to-diameter ratio enhances the combined damage effect in the radial direction in deep-water environments.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiu-Yun Li, Ben Young
Summary: This paper investigates the flexural performance of CFS zed section members bent about the neutral axis parallel to the flanges through experimental and numerical analysis. The results show that the current direct strength method generally provides conservative predictions for the flexural strength of unstiffened zed section members, but slightly unconservative design for edge-stiffened zed section beams. The nominal flexural strengths of zed section members with edge stiffeners were found to be underestimated by 17% to 21% on average. Modified DSM formulae are recommended for the design of CFS zed section beams.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Weinan Gao, Bo Song, Xueyan Chen, Guochang Lin, Huifeng Tan
Summary: This paper presents a precise method for predicting deformation in large-scale inflatable structures, utilizing finite element modeling and laser scanning technique. The study shows a good agreement between the predictive model and non-contact measurement results.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Fei Gao, Zongyi Wang, Rui Zhu, Zhenming Chen, Quanxi Ye, Yaqi Duan, Yunlong Jia, Qin Zhang
Summary: This research investigates the mechanical properties of high-strength ring groove rivet assemblies and the load resistances of riveted T-stubs. Experimental tests reveal that Grade 10.9 rivets have higher yield strength and strain, and lower ultimate strain, making them suitable for high-strength ring groove rivet connections. Increasing the rivet diameter benefits the T-stubs, while increasing the flange thickness is not always advantageous. The Eurocode 3 method is not suitable for T-stubs connected through ring groove rivets, while the Demonceau method is conservative.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Shangchun Jiang, Liangfeng Sun, Haifei Zhan, Zhuoqun Zheng, Xijian Peng, Chaofeng Lue
Summary: This study investigates the bending behavior of two-dimensional nanomaterials, diamane and its analogous structure TBGIB, through atomistic simulations. It reveals that diamane experiences structural failure under bending, while TBGIB bends elastically before undergoing structural failure. The study provides valuable insights for the application of these materials in flexible electronics.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Qiang Zhang, Jianian Wen, Qiang Han, Hanqing Zhuge, Yulong Zhou
Summary: In this study, the mechanical properties of Q690 steel H-section columns under bi-directional cyclic loads are investigated, considering the time-varying characteristics of corrosion. A refined finite element (FE) model is built to analyze the degradation of mechanical property and failure mechanisms of steel columns with different design parameters during the whole life-cycle. The study proposes a quantitative calculation method for the ultimate resistance and damage index of steel columns, taking into account the ageing effects. The findings emphasize the importance of considering the ageing effects of steel columns in seismic design.
THIN-WALLED STRUCTURES
(2024)
Article
Engineering, Civil
Yuda Hu, Qi Zhou, Tao Yang
Summary: The magneto-thermo-elastic coupled free vibration of functionally graded materials cylindrical shell is investigated in this study. The vibration equation in multi-physical field is established and solved using the Hamilton principle and the multi-scale method. The numerical results show that the natural frequency is influenced by various factors such as volume fraction index, initial amplitude, temperature, and magnetic induction intensity.
THIN-WALLED STRUCTURES
(2024)