Article
Materials Science, Multidisciplinary
Yujie Zhang, Junping Zhang, Bingcong Chen, Yumin Zhang
Summary: Steel and steel-fiber-reinforced concrete (SFRC) composite beams with high-strength friction-grip bolt (HSFGB) connectors have been found to improve the shear behavior of HSFGBs and enhance the potential application of composite beams. Finite element models (FEMs) were developed to evaluate force transmission and failure mechanisms of HSFGBs, and significant influencing factors affecting HSFGB shear performance were explored.
FRONTIERS IN MATERIALS
(2022)
Article
Construction & Building Technology
Haibo Jiang, Haozhen Fang, Jinpeng Wu, Zhuangcheng Fang, Shu Fang, Gongfa Chen
Summary: This study investigates the demountability and reusability of steel-precast UHPC composite beams with high-strength friction-grip bolt shear connectors. Twelve push-out tests were conducted to examine the effects of assembly condition, bolt grade, bolt-hole clearance, infilling grout, and pretension on the structural performance. The experimental results demonstrate that the presented composite beams exhibit favorable demountability and reusability, while oversized preformed holes may lead to a decrease in strength and stiffness.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Rita Irmawaty, Fakhruddin, Januarti Jaya Ekaputri
Summary: This study investigated the performance of geopolymer-mortar panels (GMPs) in improving the shear capacity of reinforced-concrete (RC) beams. The results showed that GMP is an effective technique for enhancing the shear capacity and changing the failure mode of RC beams, making it a promising method for shear-strengthening in building applications.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Civil
Qizhi Xu, Wendel Sebastian, Kaiwei Lu, Yiming Yao, Jingquan Wang
Summary: This paper presents an experimental study on the shear performance of composite connections, revealing the influence of key connection variables such as bolt diameter, slab thickness, bolt strength, pretension force, and bolt clearance. The results show that these variables have significant effects on the shear resistance of the connection.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Chul-Goo Kim, Hyoung-Seop Kim, Sang-Hyun Lee
Summary: The use of cold-formed U-shaped steel and concrete composite beams has increased due to the advantage of permanent steel form as a load-resisting element. This study proposed a new type of U-shaped steel-concrete composite beam with a bolt connection. Four-point flexural tests were conducted on full-scale specimens to evaluate their behavior under positive bending moment. The U-shaped composite beams exhibited similar behavior to composite beams with I-shaped steel sections. The strain compatibility method is recommended for evaluating the positive flexural strength of the composite beams, and the effective flexural rigidity was proposed to capture the increasing trend of the flexural stiffness ratio based on the shear span-to-depth ratio.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Abdolreza Ataei, Seyed Ali Mahmoudy, Mehran Zeynalian, Alireza A. Chiniforush, Tuan D. Ngo
Summary: Cold-formed steel (CFS) members have limitations in their application due to buckling and instability. This study proposed a novel demountable composite connection for prefabricated CFS structures. The connection's behavior was evaluated through push-out tests, and the results showed that higher thickness of CFS members exhibited superior strength and ductility. The importance of proportionate CFS section thickness for shear connectors was emphasized. The accuracy of a numerical model in simulating the observed behavior was confirmed, and appropriate formulas for predicting the ultimate load of the composite connection were proposed. Predictions by EC4, AISC, and AISI provisions were found to be significantly less accurate.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Wei Wang, Xie-dong Zhang, Xi-long Zhou, Bai Zhang, Jun Chen, Chao-hui Li
Summary: This research investigates the mechanical behavior of advanced bolted shear connections in steel and concrete composite beams. The experimental results show that bolt sheared off is the main failure mode, while bolt pretension has negligible effect on the failure models and shear capacity. Concrete spalling area increases with bolt diameter improvement, and initial slip load and shear stiffness of the connections grow with increased bolt pretension and diameter.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Felipe Piana Vendramell Ferreira, Konstantinos Daniel Tsavdaridis, Carlos Humberto Martins, Silvana De Nardin
Summary: Industrialization of construction aims to make building operation more environmentally friendly and sustainable. Steel-Concrete composite beams with precast hollow-core slabs have been developed for their technical and economic benefits, reducing carbon emissions and environmental footprint.
Article
Construction & Building Technology
Wei Wang, Xiedong Zhang, Yu Ren, Fanglong Bai, Chaohui Li, Zhiguo Li
Summary: This paper studied the shear properties of bolt connections embedded in Steel Lightweight Aggregate-Concrete Composite Beams (SLACCBs) through numerical modeling. The effects of various parameters on the shear behavior were investigated, and design formulae for predicting the shear strength of bolt connections were proposed.
Article
Engineering, Civil
Zhuangcheng Fang, Weibin Liang, Haozhen Fang, Haibo Jiang, Shaodi Wang
Summary: The study conducted experimental research on the shear behavior of HSFGB shear connectors in steel-precast UHPC composite structures through push-out tests, finding that increasing bolt grade and diameter can enhance shear capacity and friction resistance, and the arrangement of shear connectors does not affect shear strength.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Milad Shakarami, Mehran Zeynalian, Abdolreza Ataei
Summary: An experimental study was conducted to investigate the performance of friction-grip bolted shear connectors in composite beams with cold-formed steel sections. The results show that the behavior of this connection is different from that of headed-stud shear connector, and the diameter and strength of bolt and thickness of cold-formed steel section have the most critical effects on the shear capacity and ductility of these connections. 3D finite element modeling was validated and recommended equations were proposed for determining the bearing capacity of the screw holes.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Mahmood Y. Alkhateeb, Farzad Hejazi
Summary: This study proposes a new retrofitting scheme for RC beams using the MAS system to restrain CFRP rods. The proposed technique increases the load capacity and prevents premature debonding of the CFRP rods.
Article
Engineering, Civil
Yu-Tao Guo, Yue Yang, Shen-You Song, Jian-Sheng Fan
Summary: Steel-concrete-steel composite structures with bidirectional thin-walled webs (SCSBWs) are used for constructing large-scale structures. This paper investigates the shear-slip behavior of SCSBWs through experiments and numerical simulations, proposing a theoretical model and verifying it with experimental and numerical data.
THIN-WALLED STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Wei Wang, Xie-dong Zhang, Xi-long Zhou, Lin Wu, Hao-jie Zhu
Summary: The mechanical behavior of multi-bolt shear connectors in prefabricated steel-concrete composite beams or bridges was studied using a 3D finite element model. Design recommendations were proposed based on parametric analyses to predict the shear resistance per bolt in multi-bolt connectors.
FRONTIERS IN MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Naveed Akhtar, Tarique Ahmad, Dilawar Husain, Ali Majdi, Md Tanwir Alam, Naveed Husain, Abhay Kumar S. Wayal
Summary: This study assessed and compared the ecological footprint, mechanical properties, and production cost of geopolymer concrete with conventional cement concrete. The results showed that geopolymer concrete had higher compressive strength, lower ecological footprint, and lower production cost, making it an eco-friendly and economical alternative to conventional concrete in the era of sustainable development.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Civil
Jia-Bin Ye, Jian Cai, Qing-Jun Chen, Xinpei Liu, Xu-Lin Tang, Zhi-Liang Zuo
Article
Engineering, Civil
Lan Kang, Shutao Hong, Xinpei Liu
Summary: This study introduces rational design equations for cellular beams with circular or elongated openings based on the Direct Strength Method, verified through a finite element model, to accurately predict shear strength of these beams, including those with multiple openings.
THIN-WALLED STRUCTURES
(2021)
Article
Construction & Building Technology
Lan Kang, Bin Wu, Xinpei Liu, Hanbin Ge
Summary: This paper reports a series of experimental tests on the post-fire mechanical and fracture properties of high strength steel Q460. The results show that the yield strength and ultimate strength of Q460 decrease with an increase in heating temperature, but the elongation increases. Ductile fracture behavior of the specimens can be observed during the tensile tests.
ADVANCES IN STRUCTURAL ENGINEERING
(2021)
Article
Engineering, Civil
Jia-Bin Ye, Jian Cai, Xinpei Liu, Qing-Jun Chen, Zhi-Liang Zuo, Bing-Quan He
Summary: This paper investigates the structural performance of inclined reinforced concrete pile groups subjected to horizontal static and impact loads, finding that the variation of inclination angle significantly affects the static and dynamic behaviour of pile groups. Different failure modes of pile groups under impact are observed for different inclination angles.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Yifan Zhou, Brian Uy, Jia Wang, Dongxu Li, Zhichao Huang, Xinpei Liu
Summary: Stainless steel-concrete composite beams are a new application for infrastructure and highways, offering sustainable solutions with their superior properties. This study conducted comprehensive experimental, numerical and analytical research on the behavior of composite beams, proposing new analytical models and a modified design approach.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Construction & Building Technology
Chang-Min Yuan, Jian Cai, Qing-Jun Chen, Xinpei Liu, Houjun Huang, Zhiliang Zuo, An He
Summary: This paper introduces and investigates an innovative type of precast recycled fine aggregate (RFA) concrete beam-column joint with pressed sleeve connections through experimental study, proving its desirable performance and feasibility. The proposed connection shows similar performance to the conventional monolithic cast-in-situ counterpart in terms of flexural capacity and shear capacity. Analytical methods for predicting the flexural and shear capacities of the joint are recommended.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Xinpei Liu, Mark Bradford, Jia Wang
Summary: This paper investigates the axial load-slip behavior of single-leg bolted angle steel connections at elevated temperatures for steel lattice structures. A three-dimensional finite element model is developed to take into account temperature-dependent material nonlinearities and the interaction of structural components. The model's predictions are validated by comparing them with experimental results. Parametric studies are conducted to analyze the effects of various factors on the load-slip responses of the connections. A simplified theoretical model is proposed and verified for predicting the behavior of the connections, which could be applicable to advanced analysis of steel lattice structures.
Article
Construction & Building Technology
Lan Kang, Feng Chen, Bin Wu, Xinpei Liu, Hanbin Ge
Summary: This paper presents the results of an experimental study on the material behavior of laser cladding sheets (LC sheets) produced using commercial 316 L stainless steel powder. The study investigates the mechanical properties, degree of anisotropy, and microstructure of the LC sheets. Tensile tests were conducted to examine the influence of scanning pattern, specimen orientation, and thickness on the mechanical properties. The results show elastic isotropy for the elastic modulus and Poisson's ratio, and plastic anisotropy for the proof stresses, ultimate stress, and elongation, with a degree of anisotropy for most of the plastic mechanical properties below 20%. Microindentation hardness measurements establish a linear correlation between ultimate strength and hardness. Microstructure analyses using metallographic and SEM tests provide insights into the observed mechanical properties.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Civil
Lan Kang, Bin Zhang, Mark A. Bradford, Xinpei Liu
Summary: In this study, the interfacial behavior between the substrate and LC sheet of laser cladding sheet (LCS)-covered steel plates is investigated. It is observed that the stresses in the LCS-covered plates can be transferred effectively through the interface between the substrate and LC sheet, and perfect interfacial bonding is assumed. A theoretical model is developed to describe the elastic stress/strain distributions of LCS-covered steel plates subject to tension, and it is validated by experiments.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Chang-Min Yuan, Jian Cai, Qing-Jun Chen, Xinpei Liu, Zhiliang Zuo, An He, Houjun Huang
Summary: The seismic behavior of precast recycled fine aggregate (RFA) concrete columns with pressed sleeve connections was experimentally investigated to explore their potential in new concrete construction. Various parameters were considered, including the axial compression ratio, longitudinal reinforcement ratio, replacement ratio of RFA, and manufacturing method. The experimental results showed the favorable performance of the pressed sleeve connections and the feasibility of using RFA concrete in precast columns.
Article
Engineering, Civil
Lan Kang, Cheng Zhang, Mark A. Bradford, Xinpei Liu
Summary: This study employs laser cladding technology as a novel repair method for damaged steel structures. The results show that the stiffness and strength of the repaired compression members are restored and the LC repair technique can significantly reduce stress/strain concentration caused by local corrosion.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Lan Kang, Feng Chen, Mark A. Bradford, Xinpei Liu
Summary: Laser additive manufacturing (LAM) is an advanced technology with high efficiency and precision in producing large size 3D printing elements. This study investigates the mechanical properties and microstructure of LAM 316L stainless steels. The results show high anisotropy in the mechanical properties of LAM 316L stainless steels in the building elevation plane.
Article
Engineering, Civil
Mark A. Bradford, Xinpei Liu, Chang Chen, Jia Wang
Summary: In this paper, a finite element model is constructed to investigate the behavior and response of lattice angle steel structures under fire loading. The model considers material and geometric non-linearities, load eccentricities, bolted joint slippage, and explicit dynamic analysis for quasi-static loading. The accuracy of the model is validated by comparing its predictions with experimental results. The model is extended for structural fire analysis by incorporating temperature-dependent material properties and calibrated load-slip relationship for bolted connections.
Article
Construction & Building Technology
Yifan Zhou, Brian Uy, Jia Wang, Dongxu Li, Xinpei Liu
Summary: Stainless steel-concrete composite beam is a popular structural form for offshore bridges and high-rise buildings due to the corrosion resistance and ductility of stainless steel. However, the limited research and design recommendations have hindered the widespread application of stainless steel shear connectors in composite beams.
STEEL AND COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Xinpei Liu, Huiyong Ban, Juncheng Zhu, Brian Uy
STEEL AND COMPOSITE STRUCTURES
(2020)
Article
Engineering, Civil
Renbing An, Jiacong Yuan, Yi Pan, Duhang Yi
Summary: Traditional timber structures built on sloped land are more susceptible to seismic damage compared to structures built on flat land. The upper portion of the structure is found to be the weak point on sloped land, with potential issues such as tenon failure and column foot sliding.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Elyas Bayat, Federica Tubino
Summary: The current design guidelines for assessing floor vibration performance do not consider the influence of variability in the walking path on the dynamic response of floors. This study investigates the dynamic response of floors under a single pedestrian walking load, taking into account the randomness of the walking path and load. The effectiveness of the current guidelines in predicting floor response is critically assessed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Gao Ma, Chunxu Hou, Hyeon-Jong Hwang, Linghui Chen, Zhenhao Zhang
Summary: Minimizing earthquake damage and improving repair efficiency are the main principles of resilient structures. This study proposed a repairable column with UHPC segments and replaceable energy dissipaters. The test results showed that the columns with UHPC segments and replaceable dissipaters exhibited high strength, deformation capacity, and energy dissipation.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Kartheek S. M. Sonti, Pavan Kumar Penumakala, Suresh Kumar Reddy Narala, S. Vincent
Summary: In this study, the compressive behavior of alumina hollow particles reinforced aluminum matrix syntactic foams (AMSF) was investigated using analytical, numerical, and experimental methods. The results showed that the FE solver ABAQUS could accurately predict the elastic and elastio-plastic behavior of AMSFs. The study also suggested that FE models have great potential in developing new materials and composites under compression loading.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Zheqi Peng, Xin Wang, Zhishen Wu
Summary: In this study, the statistical modeling of fiber-reinforced polymer (FRP) cables using the classic fiber bundle model is explored. The study considers important features of large-scale multi-tendon FRP cables, such as initial random slack and uneven tensile deformation among tendons. A parametric study and reliability analysis are conducted to predict the load-displacement relation and design thousand-meter-scale FRP cables. The study emphasizes the relation between the reliability index beta of the cable and the safety factor gamma of the FRP material.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Yanchao Shi, Shaozeng Liu, Ye Hu, Zhong-Xian Li, Yang Ding
Summary: This paper introduces a damage assessment method for reinforced concrete (RC) columns under blast loading, using modal parameter measurement as the evaluation index. The validity of the proposed method is validated through numerical and experimental analysis. The results show that this modal-based damage assessment method is applicable for non-destructive evaluation of blast-induced damage of RC columns.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Xiaolin Zou, Maosheng Gong, Zhanxuan Zuo, Qifang Liu
Summary: This paper proposes an efficient framework for assessing the collapse capacity of structures in earthquake engineering. The framework is based on an accurate equivalent single-degree-of-freedom (ESDOF) system, calibrated by a meta-heuristic optimization method. The proposed framework has been validated through case studies, confirming its accuracy and efficiency.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jie Hu, Weiping Wen, Chenyu Zhang, Changhai Zhai, Shunshun Pei, Zhenghui Wang
Summary: A deep learning-based rapid peak seismic response prediction model is proposed for the most common two-story and three-span subway stations. The model predicts the peak seismic responses of subway stations using a data-driven approach and limited information, achieving good predictive performance and generalization ability, and demonstrating significantly higher computational efficiency compared to numerical simulation methods.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jin Ho Lee, Jeong-Rae Cho
Summary: A simplified model is proposed to estimate the earthquake responses of a rectangular liquid storage tank considering the fluid-structure interactions. The complex three-dimensional structural behavior of the tank is represented by a combination of fundamental modes of a rectangular-ring-shaped frame structure and a cantilever beam. The system's governing equation is derived, and earthquake responses such as deflection, hydrodynamic pressure, base shear, and overturning moment are obtained from the solution.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
W. J. Lewis, J. M. Russell, T. Q. Li
Summary: The work discusses the key features and advantages of optimal 2-pin arches shaped by statistically prevalent load and constant axial stress. It extends the design space of symmetric arches to cover asymmetric forms and provides minimum values of constant stress for form-finding of such arches made of different materials. The analysis shows that constant stress arches exhibit minimal stress response and have potential implications for sustainability and durability of future infrastructure.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Wen-ming Zhang, Han-xu Zou, Jia-qi Chang, Tian-cheng Liu
Summary: Saddle position is crucial in the construction and control of suspension bridges. This study proposes an analytical approach to estimate the saddle positions in the completed bridge state and discusses the calculation under different definitions. The relationship between the saddle position and the tower's centerline is analyzed, along with the eccentric compression of the tower. The feasibility of the proposed method is verified through a real-life suspension bridge.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Shaise K. John, Alessio Cascardi, Yashida Nadir
Summary: This study experimentally investigated the use of TRM material for reinforcing concrete columns. The results showed that increasing the number of textile layers effectively increased the axial strength. Additionally, the choice of fiber type and hybrid textile configuration also had a significant impact on strength improvement. A new design model that considers the effects of both the confining matrix and textile was proposed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chandrashekhar Lakavath, S. Suriya Prakash
Summary: This study experimentally investigated the shear behavior of post-tensioned UHPFRC girders, considering factors such as prestress level, fiber volume fraction, and types of steel fibers. The results showed that increasing prestress and fiber dosage could enhance the ultimate load-carrying capacity of the girders, reduce crack angle, and increase shear cracking load.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Vahid Goodarzimehr, Siamak Talatahari, Saeed Shojaee, Amir H. Gandomi
Summary: In this paper, an Improved Marine Predators Algorithm (IMPA) is proposed for size and shape optimization of truss structures subject to natural frequency constraints. The results indicate that IMPA performs better in solving these nonlinear structural optimization problems compared to other state-of-the-art algorithms.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chun-Xu Qu, Jin-Zhao Jiang, Ting-Hua Yi, Hong-Nan Li
Summary: In this paper, a computer vision-based method is proposed to monitor the deformation and displacement of building structures by obtaining 3D coordinates of surface feature points. The method can acquire a large number of 3D coordinates in a noncontact form, improve the flexibility and density of measurement point layout, and is simple and cost-effective to operate.
ENGINEERING STRUCTURES
(2024)