Article
Engineering, Civil
Zhiyuan Li, Peng Feng, Jia-Qi Yang
Summary: In this paper, the biaxial behavior of FRP tubes was theoretically investigated and a simplified approach to rectify the confining stiffness was proposed. The proposed approach considers both elastic and nonlinear biaxial effects.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Guan Lin, Yu Xiang
Summary: Concrete-filled fiber-reinforced polymer tubes (CFFTs) are a new form of construction column that show excellent performance under various loading conditions. However, there are concerns about the performance of CFFTs when the FRP tube is locally damaged, which requires further research and improvement.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2023)
Article
Mechanics
J. K. Zhou, Guan Lin, J. G. Teng
Summary: The study presents experimental results on compound concrete filled FRP tubular columns, demonstrating that the use of external FRP confining tubes can improve the mechanical properties and durability of concrete. The inclusion of RCLs has a marginal effect on the cyclic stress-strain behavior of FRP-confined concrete.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Hongbo Guan, Yifei Xia, Shouchao Zhang, Jinli Wang
Summary: Fiber reinforced polymer (FRP) can effectively improve the mechanical properties and working performance of spontaneous combustion gangue coarse aggregate concrete (SCGAC), allowing it to be used for load-bearing structures. FRP-confined SCGAC exhibits higher strength and ultimate compressive strain compared to ordinary concrete, showing significant differences.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Yong-Chang Guo, Shu-Hua Xiao, Jun-Jie Zeng, Jia-Ying Su, Tian-Zi Li, Zhi-Hong Xie
Summary: This paper proposes novel Concrete-Filled FRP Tube columns internally reinforced with FRP-steel Composite Bars (CFFT-CB columns) and experimentally studies their axial compressive behavior, showing their suitability for marine and coastal structures in harsh environment.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Mechanics
K. C. Liu, C. Jiang, T. Yu, J. G. Teng
Summary: This paper presents a systematic experimental study on the axial compressive behavior of elliptical FRP tube-confined concrete columns (EFCCCs). The study found that the confinement effectiveness of FRP tubes in EFCCCs decreases with the aspect ratio and concrete strength, but increases with the FRP tube thickness. The fiber orientations in the FRP tube have a significant effect on the confinement effectiveness and failure mode of EFCCCs. Based on the test results, a new stress-strain model for the concrete in EFCCCs is proposed, which includes a more rigorous treatment of the confinement stiffness and can provide more accurate predictions for the whole stress-strain curve than existing models.
COMPOSITE STRUCTURES
(2023)
Review
Engineering, Civil
Chaochao Feng, Feng Yu, Yuan Fang
Summary: This paper provides a comprehensive review of research on the mechanical behaviors of PVC tube confined concrete (PTCC) and PVC-FRP confined concrete (PFCC), highlighting their superior performance and significant implications for structural engineering applications.
Article
Construction & Building Technology
Qing Hu, Yong Mei, Changyong Liu, Sumei Zhang, Yuyin Wang
Summary: This paper investigates the compressive behaviors of FRP-interlayer-steel confined concrete (FISC) columns. The confinement on concrete by the FRP and steel tubes can be divided into three stages, including the non-confinement stage, the steel-controlling stage, and the FRP-controlling stage. A finite element model is proposed to accurately predict the stress-strain behaviors of FISC columns.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Construction & Building Technology
Fahed Alrshoudi, Husain Abbas, Aref Abadel, Abdulrahman Albidah, Ali Altheeb, Yousef Al-Salloum
Summary: This study experimentally and analytically investigated the compression behavior of confined high strength geopolymer concrete (HSGC) and compared it with high strength cement concrete (HSC). Different types of confinement were applied and analyzed for their effects on stress-strain behavior of both HSGC and HSC.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Gaofei Wang, Yang Wei, Cong Shen, Zhe Huang, Kaiqi Zheng
Summary: A new type of ultrahigh-performance concrete-filled fibre-reinforced polymer-steel composite tube column was designed to reduce section size and improve column stiffness using high strength and durable UHPC, while also reducing brittleness by using FRP-steel composite tubes as confinement. The study analyzed key parameters through experimental tests and proposed strength prediction models.
THIN-WALLED STRUCTURES
(2023)
Article
Mechanics
Jun-Jie Zeng, Sheng-Da Liang, Yong-Long Li, Yong-Chang Guo, Guo-Yi Shan
Summary: The study proposes the use of FRP jackets to strengthen ECFST columns, with experimental results showing that increasing FRP thickness enhances the elastic stiffness and ultimate axial load of the columns; the performance of FCECFST columns is significantly better than conventional ECFST columns. A new model for ultimate axial stress and strain is introduced, with verification demonstrating its accuracy.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Nicholas Sirach, Scott T. Smith, Tao Yu, Ahmed Mostafa
Summary: The study shows that FRP-confined multi-tube concrete columns exhibit excellent structural behavior under different parameters, with internal steel tubes outperforming aluminum tubes, and basalt FRP and GFRP jackets having similar effects. Increasing FRP thickness improves the ultimate strength of the column.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
J. K. Zhou, Guan Lin, J. G. Teng
Summary: A novel method for recycling concrete involves crushing demolition concrete into large pieces and mixing them directly with fresh concrete to produce compound concrete. This approach avoids the complexity of recycling concrete into aggregates, but the resulting compound concrete is more heterogeneous than normal concrete. A new technique involving external fiber-reinforced polymer (FRP) confinement has been explored to improve the properties of compound concrete, with promising results from experimental tests on FRP-confined compound concrete-filled columns.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Liang Huang, Jinmei Liang, Chang Gao, Libo Yan
Summary: The study found that using outer flax FRP tube (FFRP) and inner steel spiral reinforcement (SR) as confinement materials in recycled aggregate concrete (RAC) columns can enhance their compressive strength and promote ductile failure behavior.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Yu-Gui Cao, Yang Zhang, Mu-Yu Liu, Zhi-Fang Lu, Cheng Jiang
Summary: This study presents an analysis-oriented stress-strain model for FRP-confined predamaged concrete columns. By establishing two state-of-the-art databases and developing parameters, the model can predict columns of different cross-sectional shapes and performs well compared with test data.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
J. K. Zhou, Guan Lin, J. G. Teng
Summary: A novel method for recycling concrete involves crushing demolition concrete into large pieces and mixing them directly with fresh concrete to produce compound concrete. This approach avoids the complexity of recycling concrete into aggregates, but the resulting compound concrete is more heterogeneous than normal concrete. A new technique involving external fiber-reinforced polymer (FRP) confinement has been explored to improve the properties of compound concrete, with promising results from experimental tests on FRP-confined compound concrete-filled columns.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
J. G. Teng, J. J. Wang, Guan Lin, J. Zhang, P. Feng
Summary: The study investigates a new form of concrete-filled steel tubular (CFST) columns known as confined concrete-filled steel tubular (CCFST) columns, which exhibit greater ductility and lower steel volume consumption compared to traditional CFST columns. Experimental results show that the axial load-axial strain curve of a CCFST column can be conservatively predicted by combining the curves of a hollow steel tube, HSS spiral-confined concrete core, and sandwiched concrete.
ADVANCES IN STRUCTURAL ENGINEERING
(2021)
Article
Engineering, Civil
G. M. Chen, J. J. Zhang, Guan Lin, Y. F. Wu, T. Jiang
Summary: This study experimentally investigates the effect of column size on the compressive strength of glass fiber-reinforced polymer (GFRP)-confined square compound concrete columns, revealing that column size has a significant impact on compressive strength.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2022)
Article
Engineering, Civil
T. Jiang, P. Chen, P. Ji, G. M. Chen
Summary: In this study, the stress-strain model for FRP-confined normal concrete is modified to extend its applicability to FRP-confined RBAC. Comparison of experimental results shows that the axial strain of RBAC can be considered path-independent while the axial stress tends to be path-dependent, likely due to the weak resistance of recycled brick aggregate.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2022)
Article
Engineering, Civil
Tao Jiang, Guan Lin, Pan Xie
Summary: Hybrid FRP-concrete-steel double-skin tubular columns exhibit excellent mechanical performance and durability. This study investigates the behavior of these columns under eccentric compression, and finds that they display highly ductile behavior. A theoretical column model incorporating stress-strain models accurately predicts the axial load-carrying capacities of the columns.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Pan Xie, Lik Lam, Tao Jiang
Summary: Self-compacting concrete (SCC) is suitable for application in hybrid FRP-concrete-steel double-skin tubular columns (DSTCs) due to its excellent flow ability. However, the large shrinkage of SCC compared to traditional concrete poses challenges to the integrity and composite action of DSTCs.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2023)
Article
Construction & Building Technology
Pan Xie, Tao Jiang, Guan Lin, Lijuan Li, Yongchang Guo
Summary: This study conducted a series of tests on hybrid DSTCs with different slenderness ratios under eccentric compression, and found that DSTCs with smaller slenderness ratios performed well with great ductility. By using existing stress-strain models, the behavior of DSTCs was successfully simulated, and the eccentric-loading stress-strain model developed by the authors' group provided the most accurate predictions for the ultimate deformation of the test DSTCs.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Pan Xie, Tao Jiang, Guan Lin
Summary: This study presents a systematic experimental investigation on large-scale hybrid DSTCs under concentric compression. The results reveal that the type of concrete and FRP tube significantly affect the compressive behavior of hybrid DSTCs. Additionally, an existing stress-strain model for confined concrete in hybrid DSTCs provides reasonably accurate predictions, but fails to account for the axial stress drop caused by the shrinkage of SCC.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Jiehui Zhang, Xuelong Gao, Guan Lin, Pan Zhang, Yuhong Wang, Haizhuo Lin, Feng Chen
Summary: Urban flooding has become a major problem worldwide due to increased precipitation intensity, rising sea level, and land development. This research focuses on the development of fiber-reinforced polymer (FRP) underground storage tanks (USTs) for stormwater detention, storage, and reuse. The mechanical performance of USTs, including a laboratory test and finite element analysis, is investigated, and factors influencing their performance are examined. The findings provide valuable insights for the design of FRP USTs under road pavements in mitigating urban flooding and harvesting stormwater.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
Review
Construction & Building Technology
Z. Y. Xia, T. Jiang, T. Yu
Summary: This paper provides a comprehensive review of the potential and applications of curved FRP members in innovating arch structures. The manufacturing methods available for creating curved FRP members and their potential applications are discussed, along with a review of previous arch projects and relevant novel concepts. Directions for future development in each category are highlighted, and challenges and potential solutions are discussed.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
Article
Engineering, Civil
Guan Lin, S. S. Zhang
Summary: Most design guidelines/codes currently ignore the compressive contribution of GFRP bars in compression members, but studies have shown that with adequate transverse bars, the contribution of longitudinal FRP bars can be significant. This paper presents experimental results on CFFT cylinders with internal longitudinal GFRP bars, which demonstrated that FRP bars contribute significantly to the total load resistance of these cylinders. A simplified analysis method for the axial load at FRP bar crushing in CFFT cylinders was also proposed.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
G. M. Chen, Z. H. Lin, Q. Liu, Guan Lin, Y. Xiong, Y. Z. Guo
Summary: This study presents the results of an experimental program on the compressive behavior of hybrid FRP-concrete-steel double-skin tubular columns filled with UHPC or ECC. The use of UHPC or ECC leads to advantages such as reduced cracking and excellent corrosion resistance compared to conventional NSC. Test results demonstrated highly ductile behavior of DSTC specimens with UHPC or ECC, but the expected beneficial effects of fibers in UHPC or ECC were insignificant in the axial compressive behavior of DSTC specimens. The axial load resistances of different components in the test hybrid DSTC specimens were investigated, showing the beneficial effect of interaction, especially for DSTC-NSC and DSTC-ECC specimens.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2023)
Article
Construction & Building Technology
Bing Fu, Lin Xu, Yuanbin Xu, Guan Lin, Peilong Li
Summary: This study proposes a novel method of reusing waste wood formwork as the core of FRP sandwich panels. The bending behavior of these panels is evaluated through experiments and numerical simulations, demonstrating that increasing the thickness of the core plate and GFRP layer improves the bending stiffness and strength of the panels.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
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)
