Article
Engineering, Civil
Javier Canada Perez-Sala, Ana M. Ruiz-Teran
Summary: Precast Concrete Segmental Bridges are a mature alternative for bridge construction, with significant advantages in the construction process. This study proposes a new Finite Element model for Precast Concrete Segmental Bridge decks, which can accurately replicate their behavior at a lower computational cost. The model shows good agreement with existing experimental results. The modeling strategy for joints greatly impacts the behavior of the model, while the consideration of friction in external tendons has limited relevance. The presence of epoxy at the joints does not seem to significantly affect the model's behavior. Shell elements combined with the proposed joint modeling strategy offer better accuracy and lower computational time compared to existing models.
ENGINEERING STRUCTURES
(2023)
Article
Computer Science, Interdisciplinary Applications
Alireza Bagher Shemirani
Summary: This paper numerically investigates the effect of changes in the mechanical properties of UHPC and RC on concrete bridge decks, and the results indicate that UHPC can be effectively used for bridge decks.
COMPUTERS AND CONCRETE
(2022)
Article
Construction & Building Technology
Shuyuan Zheng, Weijie You, Chenggong Wang, Xiaoyang Liu, Inamullah Khan, Guotao Yang
Summary: This study investigates the mechanical properties and restrained shrinkage behavior of steel-AAUHPC composite bridge decks. The rate of shrinkage in AAUHPC decreases with age, and the overall shrinkage deformation becomes stable at 28 days. The steel deck, studs, and steel reinforcement have a significant restraining effect on the shrinkage of AAUHPC.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Ali Hafiz, Thomas Schumacher, Anis Raad
Summary: The article introduces a new non-destructive test method that detects damage in structures such as concrete bridge decks using nonlinear vibration characteristics. This method is based on impulse response testing and proposes a new damage assessment index called the nonlinear vibration index.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Milad Hafezolghorani, Farzad Hejazi, Mohd Saleh Jaffar, Hojjat Adeli
Summary: This paper presents a new 3D analytical model for partially prestressed concrete (PPC) beam-column elements subjected to static and dynamic loads. The model includes plasticity theory and yielding surfaces to detect damage and determine the location of plastic hinges in the structural components. Experimental tests were conducted to verify the accuracy of the analytical model, and the results showed good agreement with numerical analysis. Additionally, a comparison of seismic response between reinforced concrete (RC) and PPC structures demonstrated the improved stiffness and energy dissipation capacity of the structure with PPC members, as well as a decrease in the number of plastic hinges.
Article
Materials Science, Multidisciplinary
Ze Xiang, Zhiwen Zhu, Xinbin Lei
Summary: This study conducted field testing on fatigue cracking of floorbeam cutout in a bridge to investigate fatigue crack initiation, and established a multi-scale numerical model based on extended finite element method (XFEM) to reveal crack growth mechanism. It was found that floorbeam cutout exhibits a complex three-dimensional deformation state under wheel loads, leading to an I-II-III mixed crack growth mode. The crack propagation direction is normal to the free edge of floorbeam cutout, which is the crack propagation direction at initiation. Increasing floorbeam thickness can facilitate preventing the crack propagation of floorbeam cutout.
MATERIALS & DESIGN
(2023)
Article
Construction & Building Technology
Xinyu Shi, Yan Yao, Ling Wang, Cheng Zhang, Iftikhar Ahmad
Summary: A modified carbonation model based on humidity-temperature-CO2 coupling was proposed and validated through experiments. The study showed that various factors such as stress damage play a significant role in the impact of carbonation on concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Zhenyu Cheng, Qinghua Zhang, Yi Bao, Penghao Deng, Chuan Wei, Mingzhe Li
Summary: This study established a finite element model to investigate the flexural behavior of composite bridge decks, which was validated against experimental results. The results showed that the MCL-shaped dowels provided sufficient shear strength, and the composite bridge decks exhibited flexural failure mode with adequate ductility.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Xudong Wang, Changqing Miao, DiDi Hao
Summary: This study proposes a computational framework for fatigue performance optimization of diaphragm cutout geometry design in orthotropic steel decks. Sensitivity analysis and predictive modeling using artificial neural networks are used to identify the significant parameters and optimize the cutout design. The framework is demonstrated to be effective and applicable in a real-world application.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Zachary W. Coleman, Anton K. Schindler, Christian M. Jetzel
Summary: This study investigates the use of impact-echo testing to detect various types of defects in reinforced concrete bridge decks. Results show that impact echo is generally effective at responding to the presence of delaminations, voids, deterioration, and poorly constructed concrete in bridge decks without overlays. The study also observes how defect thickness, size, and depth affect detectability.
JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES
(2021)
Article
Chemistry, Physical
Ahmed Bahgat Tawfik, Sameh Youssef Mahfouz, Salah El-Din Fahmy Taher
Summary: This study conducted numerical analysis on notched plain and reinforced concrete beams using different crack simulation techniques and investigated the effects of various parameters on the flexural response. The results showed that XFEM and VCCT produced better results compared to CIT, and that reducing initial notch-to-depth ratio and shear span-to-depth ratio increased flexural capacity. Additionally, the use of external post-tensioning and reinforcement improved the ductility and flexural capacity of the beams.
Article
Construction & Building Technology
Xinyu Shi, Cheng Zhang, Ling Wang, Yan Yao
Summary: The effect of the interfacial transition zone (ITZ) on carbonation of stress damaged concrete was investigated through a joint simulation. The results showed that the ITZ reduced the aggregate-phile effect in undamaged concrete, while in stress damaged concrete, it led to uneven carbonation fronts and increased the maximum carbonation depth.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Engineering, Civil
Xiaodong Song, Yili Huang, Qiao Huang, Huakai Zheng
Summary: In this study, the static and fatigue behaviors of GFRP-concrete composite bridge deck were investigated using experimental and numerical methods. The results showed good fatigue resistance of the composite structure and validated the accuracy of the finite element model. The proposed method can effectively predict the deflection and strain of components, making it a reliable tool for structural analysis.
STRUCTURAL ENGINEERING AND MECHANICS
(2021)
Article
Engineering, Mechanical
Xu Long, Kainan Chong, Yutai Su, Chao Chang, Liguo Zhao
Summary: A mesoscopic constitutive model coupled with crystal plasticity and damage is established to investigate the plastic deformation and damage-induced degradation of polycrystalline materials under cyclic loading. The proposed model is verified through a single-element model containing one grain. The stress, strain states, and damage evolution of polycrystals under cyclic loading are comprehensively investigated, and the constitutive parameters in the model are calibrated against experimental results. The simulation results show that considering damage can more accurately describe the strength degradation of polycrystals under cyclic loading.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Construction & Building Technology
Lifei Zhang, Yu Zheng, Yong Yu, Shaowei Hu, Zhenduo Wu, Bo Di, Yongchang Guo, Ming Li
Summary: Engineered cementitious composites link slabs, reinforced with fiber-reinforced polymer bars, demonstrated sufficient flexibility to meet the current design protocols. Research indicates that there are certain limitations to the depth-span ratio and reinforcement ratio of such link slabs, and the debonded length should exceed 0.8% to achieve low bending stiffness.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Mechanics
Yang Yang, Lesley Sneed, M. Saiid Saiidi, Abdeldjelil Belarbi, Mo Ehsani, Ruili He
COMPOSITE STRUCTURES
(2015)
Article
Construction & Building Technology
Yang Yang, Lesley H. Sneed, Adam Morgan, M. Saiid Saiidi, Abdeldjelil Belarbi
CONSTRUCTION AND BUILDING MATERIALS
(2015)
Review
Engineering, Civil
Ruili He, Yang Yang, Lesley H. Sneed
JOURNAL OF BRIDGE ENGINEERING
(2015)
Article
Engineering, Civil
Ruili He, Yang Yang, Lesley H. Sneed
ENGINEERING STRUCTURES
(2016)
Article
Engineering, Civil
Yang Yang, Ruili He, Lesley Sneed, M. Saiid Saiidi, Abdeldjelil Belarbi
ENGINEERING STRUCTURES
(2019)
Article
Engineering, Geological
Hua Jiang, Yang Yang
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2020)