Experimental study on fatigue performance of UHPC-orthotropic steel composite deck

Chen, Shiming; Huang, Yang; Ping, Gu; Wang, Junyan

doi:10.1016/j.tws.2019.05.001

Cited by 69 publications

(23 citation statements)

References 24 publications

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“…Low water/binder ratios lead to the existence of numerous unhydrated cement particles inside, conferring it with a certain self-repairing ability. Thus, it can meet the high-performance requirements of engineering structures in various severe environments [ 40 , 41 , 42 , 43 , 44 ]. In recent years, many researchers [ 32 , 45 , 46 , 47 ] have reported the development of UHPC and evaluated its mechanical and durability performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Han

et al. 2022

Materials

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Nuclear technology benefits humans, but it also produces nuclear radiation that harms human health and the environment. Based on the modified Andreasen and Andersen particle packing model for achieving a densely compacted cementitious matrix, a new magnetite ultra-high-performance concrete (MUHPC) was designed using magnetite fine aggregate as a substitute for river sands with 0%, 20%, 40%, 60%, 80%, and 100% replacement ratios. The comprehensive properties of the developed MUHPC were tested and evaluated. These properties were fluidity, static and dynamic compressive strengths, high-temperature performance, antiradiation behaviors, hydration products, and micropore structures. Experimental results indicate that the developed MUHPC has high work performance and static and dynamic mechanical properties. The gamma ray shielding performance of MUHPC substantially improves with increased magnetite fine aggregate. Corresponding with 100% magnetite fine aggregate substitution, the linear attenuation coefficient of MUHPC is enhanced by 56.8% compared with that of ordinary concrete. Magnetite addition does not change the type of cement hydration products but improves the micropore structures of MUHPC and effectively reduces its total porosity and average pore diameter, thereby contributing to its mechanical and radiation shielding properties. The compressive strength and linear attenuation coefficient of the MUHPC can reach 150 MPa and 0.2 cm−1, respectively. In addition, the MUHPC also exhibits superior mechanical and radiation shielding performance at elevated temperatures (<400 °C). Finally, high strength and antiradiation performance support the use of MUHPC in radiation protection materials in the future.

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Section: Introductionmentioning

confidence: 99%

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Han

et al. 2022

Materials

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“…However, fatigue performance of the UHPC layer and failure mode occurring at the shear connection between the UHPC and the OSD are still not well understood. To fulfill such gap under negative moment, two UHPC-orthotropic steel composite deck specimens were experimentally studied by Chen et al (2019a). Two typical fatigue failure modes have been found and identified, namely, longitudinal crack and shear delamination between the UHPC and the OSD, respectively.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on fatigue behavior of ultrahigh-performance concrete-Orthotropic steel composite bridge deck

Huang

Chen

Ping

2022

Advances in Structural Engineering

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Ultrahigh-performance concrete-orthotropic steel composite bridge deck is composed of the orthotropic steel deck and a thin ultrahigh-performance concrete (UHPC) overlayer. In the previous fatigue tests, two typical fatigue failure modes were found and identified. As a supplementary test after fatigue tests, air penetration method is capable of providing a reference to the quantitative and non-destructive damage detection of fatigue damage of UHPC. To further the previous study, a detailed numerical investigation is accomplished through complimentary finite element (FE) analysis. Compared with the solid element model, the refined shell-solid element model can better reflect the mechanical behavior. It is illustrated that the vertical stress can be adopted in assessing the fatigue strength of rib-to-diaphragm welded connection in the field test by means of nominal stress method. The combination of various factors would lead to fatigue shear failure of the short headed-studs. The fatigue strength of rib-to-diaphragm welded connection predicted by the hot spot stress method and the consistent nominal stress (CNS) method can basically meet the requirements of FAT90. The consistent nominal stress method can be used as the optimization method of nominal stress of fatigue detail. It is demonstrated that the fatigue life of UHPC can be estimated by S-N curves of ordinary concrete conservatively. The allowable equivalent maximum stress level can be taken as 0.55 for two million cycles of fatigue loading, and 0.52 for five million cycles of fatigue loading.

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“…Aiming at improving the fatigue performance of the rib-tocrossbeam joint, the reported research mainly focuses on such aspects as optimizing the shape of the cope hole [4,5,12,13]; using post-weld treatment to release residual stress and enhance the performance [14]; introducing the rigid cement-based material as pavement to improve the rigidity of OSD and decrease stress range at fatigue details [15][16][17][18][19][20][21]; introducing additional attachments to enhance local rigidity [3,22], etc. Zhu et al [13] investigated the stress behavior and fatigue performance of two types of cope hole geometry on orthotropic bridge decks based on simultaneous field monitoring and finite-element method analysis.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the results of parametric study through multi-scale finite-element model and relevant experiments, the values of the vehicle-induced stress ranges are significantly reduced when a thin ultra-high performance concrete (UHPC) layer is added. Chen et al [19] performed experiments of UHPC-orthotropic steel composite deck to investigate its fatigue performance under the hogging (i.e. negative) bending moment.…”

Section: Introductionmentioning

confidence: 99%

Structural optimization of rib-to-crossbeam joint in orthotropic steel decks

Fang

Iqbal

Staen

et al. 2021

Engineering Structures

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In orthotropic steel decks (OSDs), the rib-to-crossbeam joint is the most complex joint. When dealing with the intersection of the rib to the crossbeam, the prevailing approach is to design a cope hole in the crossbeam web. Nevertheless, the stress concentration induced by rib distortion makes this joint a fatigue-prone detail. Furthermore, the weld connecting the rib and the crossbeam heavily relies on the manual welding, which leads to high fabrication costs. In this paper, the possibility of canceling the cope hole is discussed. Calculation results of different modeling methods using solid elements and shell elements are first compared with experimental results. Then, several design parameters of an OSD without cope holes are investigated adopting the hot spot stress method. Based on the results of the parametric analyzes, optimized dimensions of the rib-to-crossbeam joint without cope holes are selected. The comparison of the models with and without cope holes is performed. Fatigue life assessments are conducted based on the influence surfaces of reference points predefined around the rib-to-crossbeam joint. Research results reveal that the most critical position for the rib-to-crossbeam joint without cope holes is at the curvature on the rib side. The radius of rib has a local influence on the points at the curvature. A larger radius could effectively lower the maximum stress range. The fatigue performance of the rib-to-crossbeam joint depends on the distribution of the tire load. Considering less fatigue-prone locations and reduced fabrication costs, the overall performance of the optimized rib-to-crossbeam joint without cope holes is better.

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Experimental study on fatigue performance of UHPC-orthotropic steel composite deck

Cited by 69 publications

References 24 publications

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Numerical analysis on fatigue behavior of ultrahigh-performance concrete-Orthotropic steel composite bridge deck

Structural optimization of rib-to-crossbeam joint in orthotropic steel decks

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