Shear behavior of RC pile cap beams strengthened using ultra-high performance concrete reinforced with steel mesh fabric

Fayed, Sabry; el-din, Ahmed Badr; Basha, Ali; Mansour, Walid

doi:10.1016/j.cscm.2022.e01532

Cited by 14 publications

(7 citation statements)

References 28 publications

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“…Based on the distortion theory for thin-walled box beams, the analysis of distortion in UHPC box beams was conducted under the following fundamental assumptions [ 36 , 37 , 38 , 39 , 40 , 41 , 42 ]: The UHPC box beam was assumed to be in a linear elastic regime, neglecting the micro-cracks in the concrete. The normal and shear stresses of distortion warping were assumed to be unevenly distributed along the wall thickness.…”

Section: Distortion Warping Stressesmentioning

confidence: 99%

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Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

Wang,

Wu,

Zhang

et al. 2024

Materials

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Distortion deformation usually imposes a potential threat to bridge safety. In order to comprehensively understand the distortion effect on thin-walled ultra-high performance concrete (UHPC) box girders, an innovative approach encompassing the governing distortion differential equation is introduced in this study based on the general definition of distortion angle within the cross-section plane. The analytical results obtained from the proposed method are in accordance with those obtained from the energy method, and exhibit favorable agreement with experimental findings documented in the existing literature. Furthermore, a finite element model is developed on the ANSYS 2021 R1 software platform with the employment of a Shell 63 element. Numerical outcomes are also in good agreement with the experimental data, affirming the validity and reliability of the findings. In addition, parameter analysis results indicate that the distortion angle remains approximately constant at a location approximately 1/10 of the span from the mid-span cross-section of the box girder, regardless of changes in the span-to-depth ratio. Increasing the web thickness yields a notable reduction in the distortion effects, and decreasing the wall thickness can effectively mitigate the distortion-induced transverse bending moment. Compared with normal-strength concrete box girders, UHPC box girders can reduce the distortion angle within the span range, which is beneficial for maintaining the overall stability of the box girders. The outcomes obtained from this study yield engineers an enhanced understanding of distortion effect on the UHPC girder performance.

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Section: Distortion Warping Stressesmentioning

confidence: 99%

“…Based on the distortion theory for thin-walled box beams, the analysis of distortion in UHPC box beams was conducted under the following fundamental assumptions [36][37][38][39][40][41][42]:…”

Section: Distortion Warping Stressesmentioning

confidence: 99%

Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

Wang,

Wu,

Zhang

et al. 2024

Materials

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“…Sliding shear failure is less common but can occur under certain conditions, such as low compressive stress and high horizontal force, causing damage along a horizontal mortar joint [4]. Non-reversible structural interventions for seismic retrofitting [5][6][7] of reinforced concrete [8][9][10][11][12] are extensively investigated without considering the carbon footprint of these interventions [4,13]. The importance of this topic goes beyond academic study; it has direct implications for building safety and resilience in earthquake-prone areas, with risk assessment methods proposed by different researchers [14,15].…”

Section: Introductionmentioning

confidence: 99%

Comparison Regarding the Carbon Footprint of Various Sustainable Seismic Consolidation Solutions for Romanian Orthodox Churches

Gosta,

Fofiu,

Kirizsan

2024

Sustainability

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In Romania, there are numerous Orthodox churches, many of which are historical monuments of great cultural value that have suffered multiple degradations over time due to various natural or man-made reasons. In a context that is currently increasingly focused on environmental protection, we aim to analyse the carbon footprint of several different consolidation proposals to an Orthodox church with structural deteriorations (and more) and the equivalent impact if a similar building were erected with new materials. The research is proposed to be a stepping stone for determining the sustainability of interventions for orthodox churches, as the existing literature is scarce when it comes to the emissions of these churches and there is no norm to prevent unsustainable interventions. The Orthodox Church “Sfintii Voievozi”, the subject of the analysis, is in the city of Tg. Jiu, Gorj County. The construction was documented to be between 1748 and 1764 and is a historical monument listed in the LMI GJ-II-m-A-09189 registry. The architectural solutions for the church and the structural elements that comprise the load-bearing system are presented. A detailed investigation was conducted to determine structural and non-structural degradations, specifying the main causes that have produced them. With regard to consolidation solutions, two options are presented and compared in this paper: Alternative I—minimal intervention and Alternative II—maximal intervention, both of which are reversible. The carbon footprint calculation was carried out for both options, determining the associated material consumption, and compared to the carbon footprint for the case of a new construction. In conclusion, the consolidation methods with a minimal degree of intervention is recommended as the “most environmentally friendly”, considering carbon emissions when comparing the options.

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“…Additionally, scientifically designing building facades and ventilation systems contributes to optimizing energy usage, improving building efficiency, and promoting environmental sustainability in cities. The rational application of wind load principles also guides the selection of appropriate building materials and structural forms, enhancing a building's wind resistance and durability, lowering maintenance costs, and elevating the overall quality and sustainability of urban architecture [7,8]. Therefore, giving due consideration to wind loads is essential in the design of high-rise buildings, with positive impacts on urban safety, energy efficiency, environmental conservation, and sustainable development.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Reflection on the Green, Low-Carbon, and Energy-Saving Design of the Super High-Rise Building

Li,

Chen,

et al. 2024

Sustainability

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Shanghai Tower has become a new landmark of Shanghai. In the current trend advocating green building and energy efficiency, considerations of wind loads and thermal characteristics of the perimeter structure of Shanghai Tower are crucial. This paper conducts comparative simulation studies on the wind environment of Shanghai Tower using Ecotect software, and stress analyses and thermal simulations of the perimeter structure using ANSYS software. The study compared three buildings’ surface wind pressure distributions using models with equal-volume and circular cross-sections. We found that the unique exterior design of the Shanghai Tower results in a more regular and uniform distribution of wind pressure on its surface compared to both circular and square planar models, with a lower average wind pressure value. In addition, the stress analysis results indicate significant differences in deformation and stress distribution between the windward and leeward sides. Enhancing the bending moment detection of the peripheral structure and optimizing the layout of detection points are recommended. Thermal simulation results show excessive heat conduction flux in winter conditions, suggesting optimization using passive energy-saving methods such as light-sensitive thermal insulation materials during winter. This research is a reference for designing other super-tall buildings prioritizing low-carbon energy efficiency and structural safety.

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Shear behavior of RC pile cap beams strengthened using ultra-high performance concrete reinforced with steel mesh fabric

Cited by 14 publications

References 28 publications

Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

Distortion Effect on the UHPC Box Girder with Vertical Webs: Theoretical Analysis and Case Study

Comparison Regarding the Carbon Footprint of Various Sustainable Seismic Consolidation Solutions for Romanian Orthodox Churches

Analysis and Reflection on the Green, Low-Carbon, and Energy-Saving Design of the Super High-Rise Building

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