Article
Construction & Building Technology
Chuntao Zhang, Yu Chen, Mei Dou
Summary: In this study, axial compression tests were conducted on slender BFRP tubes to evaluate their compression characteristics as compression members. The results indicated that BFRP tubes exhibited three distinct failure modes, namely local failure, critical failure, and buckling failure. Two three-stage theoretical models for BFRP tubes were developed through experimental data analysis, which successfully predicted the stress-strain curves and the load-lateral deflection curves.
Article
Materials Science, Multidisciplinary
R. Rajeshguna, M. Mariappan, Agurla Raju, K. Suguna
Summary: This study evaluates the cyclic response of high strength concrete beams reinforced with externally bonded GFRP laminates reinforced by steel fiber. The optimum percentage of steel fiber was found to be 1% through laboratory tests. The performance of beams with different thicknesses of GFRP layers were further tested under cyclic loading.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Polymer Science
Junjie Zeng, Tianwei Long
Summary: A novel form of tubular columns made of ultra-high-performance concrete internally reinforced with fiber-reinforced polymer grid (FRP grid-UHPC tubular column) was developed in this study. The experimental results confirmed its satisfactory compressive strength and improved strength and ductility.
Review
Engineering, Civil
Mohamed Elchalakani, Thumitha Mandula Higgoda, Mehrdad Kimiaei, Bo Yang
Summary: This paper provides a comprehensive review of experimental studies on pultruded and pullwound FRP tubular members, focusing on the developments of connections related to these members in the past decade. The scope of the review is limited to member, connection, and full-scale frame behavior. Published works on failure modes, results, and conclusions are discussed and compared. The review concludes with a summary and recommendations for future research.
Article
Engineering, Manufacturing
Mengyuan Li, Chris Stokes-Griffin, Silvano Sommacal, Paul Compston
Summary: This paper presents a model for predicting the change in local fiber angle during post-forming of CF/PA6 thermoplastic tubular structures. The model is validated through experimental measurements and enables the optimization of laminate design for post-formed tubes.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Civil
Lokman Gemi, Emrah Madenci, Yasin Onuralp Ozkilic
Summary: This paper presents experimental, analytical, and numerical analyses on the behavior of pultruded GFRP composite beams infilled with hybrid fiber reinforced concrete under four-point loading. The study found that the pultruded profile and composite wrapping significantly improved the performance of the beams, with hybrid reinforcements being recommended for all cases. Detailed damage analyses were also provided.
ENGINEERING STRUCTURES
(2021)
Article
Chemistry, Analytical
Daniel Maldonado-Hurtado, Javier Madrigal, Antonio Penades, Rocio Ruiz, Ana Isabel Crespo, Salvador Sales
Summary: In this study, the integration of FBG sensors for observation and analysis of composite beams' integrity over time is proposed. Validation tests showed successful embedding of FBG-based optical sensors in an FRP pultrusion beam, enabling strain transmission and anticipation of piece failure through FBG spectrum deformation.
Article
Engineering, Multidisciplinary
Euan Duernberger, Charles MacLeod, Dave Lines
Summary: This study proposes a novel technique for determining the fiber volume fraction (FVF) based on the angular dependence of sound velocity. Experimental results reveal that this method accurately estimates the FVF of samples and can identify any FVF inconsistencies early in the manufacturing process.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Construction & Building Technology
Wenjie Wang, Zonglai Mo, Nawawi Chouw, Zhao-dong Xu
Summary: This study investigates the behavior of fully wrapped coconut fiber reinforced concrete (CFRC) beams reinforced with flax fiber reinforced polymer (FFRP) and the contribution of FRP to shear strength under impact loadings. Both repeated and single drop-weight tests were carried out on beams with three different FFRP wrapping thicknesses. The results showed that the impact resistance of fully FFRP wrapped beams increased nonlinearly with thickness. The damage mechanism of concrete beams and the shear contribution of FFRP in CFRC were also influenced by the FRP thicknesses. The proposed method of calculating the shear contribution of FFRP fit well with experimental values.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Thumitha Mandula Higgoda, Mohamed Elchalakani, Mehrdad Kimiaei, Adam Wittek, Bo Yang
Summary: This study proposes multiplanar truss bridges made of glass-fibre reinforced polymer circular tubular profiles with innovative non-metallic connections. Through testing and calculation analysis, the performance and load capacity of these bridges were evaluated. The results show that the use of GFRP rods and GFRP wrapping in the connections can improve the ultimate strength and ductility of the bridges.
Article
Engineering, Civil
Colin C. Caprani, Jun Wei Ngan, Ehsan Ahmadi, Shao Hua Zhang, Yu Bai, Sindu Satasivam
Summary: This paper discusses the design, construction, and performance testing of the Monash Bridge (MB), a footbridge made from pultruded glass fibre-reinforced (pGFRP) sections bonded with epoxy. The design process is supported by numerical modelling techniques. The construction method of the MB is detailed, providing valuable lessons for similar projects. The paper also highlights the performance of the MB, showing good static performance but indicating the need for advanced assessment of vibration serviceability for GFRP footbridges.
Article
Green & Sustainable Science & Technology
Djoko Setyanto, Yohanes Adeatma Antonio, Marten Darmawan, Ubaidillah Ubaidillah
Summary: This study aimed to design a new purlin made from glass-fibre-reinforced polymer composite material to increase building efficiency in a fertiliser warehouse. The analysis showed that the purlin structure met the technical criteria, such as corrosion resistance, compact stacking, and ability to withstand technical loads.
Article
Polymer Science
Thinesh Sharma Balakrishnan, Mohamed Thariq Hameed Sultan, Jesuarockiam Naveen, Farah Syazwani Shahar, Muhammad Imran Najeeb, Ain Umaira Md Shah, Tabrej Khan, Tamer Ali Sebaey
Summary: This research used the analytical hierarchy process to select the most suitable natural fiber as reinforcement in hybrid pultruded FRP composites. Among 13 alternatives, kenaf was found to be the most suitable reinforcement for the application.
Article
Mechanics
X. F. Nie, S. S. Zhang, J. G. Teng
Summary: The study focuses on strengthening RC beams with an FRP system around web openings; introduces an iterative numerical method and a strength model to predict the load capacity of such beams; the accuracy of the proposed methods is verified through test results.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
C. W. Chan, S. S. Zhang, T. Yu
Summary: This study conducted tests on circular fibre-reinforced polymer-concrete-steel hybrid multitube concrete columns, finding that they have excellent axial load and deformation capacities, suitable for engineering structures. Comparison between test results and model predictions revealed that the existing model can reasonably predict axial load-strain behavior but largely underestimates ultimate strain. Further research may help in developing a more accurate model.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Jun-zhi Liu, Shuxian Chen, Tak-Ming Chan
Summary: Comprehensive experimental and numerical investigations on hybrid T-section stub columns were conducted, and the results showed that the strength predictions from design codes were consistent and reliable. Modifications on the Direct Strength Method and Continuous Strength Method were proposed.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Sivaganesh Selvaraj, Tak-Ming Chan, Ben Young
Summary: This paper investigates the ultimate strength, stiffness, and failure modes of pultruded fibre-reinforced polymer (PFRP) single bolted connections subjected to tension. An experimental programme of 72 PFRP connections was conducted, revealing 10 different failure modes and proposing a new geometric ratio for connection characterization. The study evaluates the current design standards for minimum geometry limitations.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Junxian Zhao, Lijian Yan, Chen Wang, Yun Zhou, Ruobing Chen, Tak -Ming Chan
Summary: This paper investigates the damage-control design and seismic behavior of BRB-MFs with sliding gusset connections. The test results show that the sliding gusset connections effectively reduce the frame action at the system level, and the BRB-MF designed with the damage-control design procedure demonstrates excellent seismic performance under multiple earthquake loading levels.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Shuxian Chen, Jun-zhi Liu, Tak-Ming Chan
Summary: High strength steel (HSS) I-sections are becoming more popular due to their higher strength-to-weight ratio. Hybrid I-sections made of different strength steels for flange and web plates are also gaining interest. This study investigates the effect of welding on the material properties and residual stresses of HSS and hybrid I-sections. Tensile tests and metallographic analysis were conducted to examine the mechanical behavior and welding effects. Residual stress measurements were carried out and a new distribution model is proposed for the examined sections.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Chen Wang, Tak-Ming Chan
Summary: Through statistical analysis of a database consisting of 403 experimental tests and training machine learning models, this study finds that Support Vector Regression (SVR), Random Forest Regression (RFR), and Neural Networks (NN) can predict the ultimate strength of Concrete-filled steel tubes (CFSTs) under eccentric loading more accurately.
ENGINEERING STRUCTURES
(2023)
Review
Social Work
Tak Mau Simon Chan, Chi Yuen Victor Lau, Hoi Wa Christina Yu, Yuen Han Kitty Mo
Summary: This article reviews research on special education needs in Greater China over the past 5 decades. A total of 828 publications were identified, with the majority published in Mainland China and Taiwan. The most common target group was children, accounting for 51.3% of the studies. The studies mainly focused on Autism Spectrum Disorder (ASD), with 467 articles (56.4%), and 600 articles (72.5%) were descriptive, empirical, or correlational. The findings indicate a shift in research focus from the individual to caregivers, the importance of collective shame in Chinese culture, and an increase in research in the Greater China context. More support for research related to special education needs in Greater China and recognition of cultural relevance are recommended.
RESEARCH ON SOCIAL WORK PRACTICE
(2023)
Review
Social Work
T. M. S. Chan, C. Y. V. Lau, H. W. C. Yu
Summary: This article reviews the publications specific to Hong Kong on narrative therapy (NT) over a 20-year period. Three search strategies were used, including using the Hong Kong Baptist University OneSearch database and Google Books index, as well as sending soliciting emails to local scholars and practitioners. A total of 127 related publications were identified, with the first NT publication dating back to 1996. The most common target group was People with Problem (48.8%), and the majority of authors were academics (78.7%). The publications were primarily Journal Articles (68.5%). It is recommended that future tasks for Hong Kong related NT publications include co-construction between academics and practitioners, co-researching to build an NT community, and the co-deconstruction process of local narratives.
RESEARCH ON SOCIAL WORK PRACTICE
(2023)
Article
Construction & Building Technology
Jun-zhi Liu, Tak-Ming Chan, Ben Young
Summary: This paper investigates the behavior of cold-formed high strength steel (HSS) irregular hexagonal hollow section (IHexHS) stub columns under combined compression and bending. Finite element models are developed and validated, and parametric studies are conducted to generate numerical data and assess the accuracy and applicability of design codes. The results demonstrate that the existing design codes can be safely applied, but provide conservative predictions due to neglecting strain hardening and plate element interaction.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
Article
Engineering, Civil
Jun-zhi Liu, Han Fang, Jiachen Guo, Shuai Li, Tak-Ming Chan
Summary: The local buckling behavior of HSS HexHS stub columns under axial compression was numerically investigated in this study. Finite-element models were developed and validated against experimental results. Parametric studies were conducted to expand structural performance data and evaluate the applicability of existing design codes and approaches. Modified design methods were proposed to improve the accuracy of strength predictions for HSS HexHS stub columns.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Haixin Liu, Junbo Chen, Tak-Ming Chan
Summary: This paper aims to extend the validity of the current design formulae for predicting the yield strength of cold-formed steels. Through a comprehensive material test program, the proposed models for calculating the strength enhancements and loss in strain and elongation were validated to accurately predict the material properties of cold-formed steels.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Jia-Lin Ma, Madhup Pandey, Tak-Ming Chan, Ben Young
Summary: In this study, the applicability of existing design rules for cold-formed high strength steel (CFHSS) square and rectangular hollow section (SHS and RHS) beam-columns was evaluated. Numerical investigation and reliability analysis were conducted, and it was found that the current design rules given in American, Australian, and European codes provide conservative predictions. A modified design method based on the European code recommendations was proposed, which was proved to provide accurate and reliable predictions for the design of CFHSS SHS and RHS beam-columns of S700, S900 and S1100 steel grades.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Jun-zhi Liu, Han Fang, Tak-Ming Chan
Summary: This paper numerically studies the local buckling behavior of cold-formed high strength steel (HSS) irregular hexagonal hollow section (IHexHS) stub columns under concentric compression. Finite-element (FE) models are developed and validated against experimental data, and then used to conduct parametric studies. The results show that existing design codes are not applicable to cold-formed HSS IHexHS stub columns. Different design codes have varying degrees of conservatism for slender and stocky sections, and modified design approaches are proposed to improve accuracy.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Shuxian Chen, Jun-zhi Liu, Tak-Ming Chan
Summary: This article investigates the effect of a slender web on the local buckling and post-buckling behavior of hybrid I-sections under compression. Experimental and numerical analyses show that the unbuckled portion of the slender web plate provides post-buckling strength for the I-section stub columns. Comparing existing design methods, the Eurocode 3 provides more accurate predictions than the North American, Australian, and Chinese codes, as well as the existing direct strength and continuous strength methods.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Shuai Li, Tak-Ming Chan, Ben Young
Summary: This study proposed and experimentally investigated a novel fiber-reinforced polymer (FRP)-concrete double tube composite column. It exhibited improved deformability compared to traditional FRP-confined concrete columns. Cyclic compression tests were conducted to examine its structural behavior under cyclic loadings. Different thicknesses of outer and inner FRP tubes and types of ring concrete were investigated, and a cyclic load-strain model was proposed and verified against the test results.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Jiachen Guo, Tak-Ming Chan, Yuhong Wang
Summary: This paper introduces an innovative high-strength ring strengthened dowel connection to improve the bearing resistance of concrete at the joint surface. The effects of high-strength ring properties on ultimate load and localised concrete crushing were investigated through monotonic load tests. The test results showed significant improvements in ultimate load and initial stiffness after applying the high-strength rings, and the crushing zone was delayed with an increase in ring thickness.
ENGINEERING STRUCTURES
(2023)
