Results 21 to 30 of about 1,926 (182)

Proposal for the Promotion of Standardization of Precast Beams in Highway Concrete Bridges

open access: yesFrontiers in Built Environment, 2020
Precast concrete beams for bridges are among the widely used applications of off-site construction with various standardized profiles and lengths being long used in different national contexts. The purpose of this paper is to highlight the important role
Fani Antoniou, Marina Marinelli
doaj   +1 more source

The Concrete Effective Width of a Composite I Girder with Numerous Contact Points as Shear Connectors

open access: yesApplied Mechanics
Due to the shear strain in the plane of the slab, the parts of the slab remote from the steel beam lag behind the part of the slab located in its proximity. This shear lag effect causes a non-uniform stress distribution across the width of the slab. As a
Alaa Hasan, Moaid Subh, George Wardeh
doaj   +1 more source

Influence of flange width and wall parameters on effectiveness of cold-formed steel Sigma-profile in bending behavior [PDF]

open access: yesИнженерно-строительный журнал, 2013
The effectiveness of bending behavior of cold-formed steel profiles is studied. The purpose of the study was to estimate the influence of section parameters - flange width and size of the wall portion, adjacent to the flange – on effectiveness of the ...
A.A. Kikot, V.V. Grigoriev
doaj  

Systematic Exploration of 3D Concrete Printing Parameters for Conformal Printing on Sloped Surfaces

open access: yesAdvanced Robotics Research, EarlyView.
A conformal slicing algorithm is developed for robotic 3D concrete printing (3DCP) on sloped surfaces as a first step toward printing slab‐on‐grade foundations on uneven terrain. Systematic experiments quantify the effects of nozzle speed, extrusion rate, and toolpath direction on filament dimension and stability.
Paniz Farrokhsiar   +2 more
wiley   +1 more source

Experimental and numerical investigations of partially encased composite columns under axial load [PDF]

open access: yesJournal of Structural and Construction Engineering, 2019
In current international practice, composite construction is gaining importance in industrial buildings and in particular in high-rise buildings. Partially encased composite (PEC) columns are one of the recent developments in composite column.
Mehdi Ebadi Jamkhaneh   +2 more
doaj   +1 more source

Structured sorbents for Direct Air Capture: The impact of materials and chemicals on performance

open access: yesAIChE Journal, EarlyView.
Abstract Structured sorbents can efficiently process large air volumes required for Direct Air Capture (DAC), but their broad implementation is limited by challenges in producing reproducible and homogeneous materials. This work presents a robust procedure to graft amines onto monolithic sorbents and systematically investigates how CO2$$ {\mathrm{CO ...
Nicole Ferru   +8 more
wiley   +1 more source

Analysis of Factors Affecting the Seismic Performance of Widened Flange Connections in Mid-Flange H-Beams and Box Columns

open access: yesBuildings
Following the Northridge and Kobe earthquakes, research has increasingly focused on achieving high ductility in beam-to-column connections. This study investigates the seismic performance of connections featuring widened beam-end flanges in mid-flange H ...
Tigist Demssice Gemechu, Linfeng Lu
doaj   +1 more source

Leakage control for a flat flange model with a gap based on sealing liquid viscosity

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2021
Flat flanges are sealed using a gasket, used to prevent leakage between the static surfaces. Gaskets comprise synthetic materials such as rubber, copper alloys, and plastic and they are inserted between two planes to strengthen the sealing performance ...
Song GAO, Toshiharu KAZAMA
doaj   +1 more source

Design and Characterization of a Dual‐Mode Soft Robotic Flapping Propeller With Pneumatic Stiffness Modulation

open access: yesAdvanced Intelligent Systems, EarlyView.
A novel soft robotic propeller overcomes traditional efficiency‐flexibility tradeoffs via a hybrid pneumatic‐cable actuation strategy. This architecture enables active stiffness modulation with dual‐mode locomotion: tunable biomimetic swimming and earthworm‐inspired wriggling for confined spaces.
Jiazi Geng   +6 more
wiley   +1 more source

Determining the elastic-plastic effective width of the free flange of a hull girder with the breaking of a wall

open access: yesEastern-European Journal of Enterprise Technologies, 2021
Разработаны зависимости для определения эффективной ширины свободного фланца в опасном сечении широкополой судновой балки с изломом стенки/кромок/оси при упруго-пластическом деформировании в зависимости от приложенной нагрузки для идеально-пластического материала без упрочнения.
Valerii Sokov, Leontii Korostylov
openaire   +4 more sources

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