Results 1 to 10 of about 421,350 (190)

Influence of vertical grouting steel-tube connection mode on anti-sliding performance

open access: yesFrontiers in Earth Science, 2022
Steel-tube grouting technology has been widely applied in the slope control engineering. While the anti-sliding performances of different connection modes of grouted steel tubes still needs further investigation.
Shaowei Wei   +8 more
doaj   +2 more sources

Numerical Study on the Axial Compressive Behavior of Steel-Tube-Confined Concrete-Filled Steel Tubes. [PDF]

open access: yesMaterials (Basel), 2023
To improve the concrete confinement and mechanical properties of concrete-filled steel tube (CFST) columns, a new configuration of steel-tube-confined concrete-filled steel tube (T-CFST) columns has recently been developed, in which an outer steel tube is employed externally, and the additional tube does not sustain the axial load directly.
Li X, Zhang S, Tao Y, Zhang B.
europepmc   +3 more sources

Experimental and numerical investigations on the bond-slip behavior of the interface between geopolymer concrete and steel tube [PDF]

open access: yesScientific Reports
This study conducts push-out tests on eight geopolymer concrete filled steel tube column specimens with varying design parameters to evaluate the effects of steel tube wall thickness, concrete strength, and the presence of welded longitudinal ribs on the
Ran Hai   +5 more
doaj   +2 more sources

Compressive torsional hysteresis performance of concrete filled square CFRP steel tube [PDF]

open access: yesScientific Reports
To study the mechanical performance of concrete-filled square CFRP steel tube under compressive-torsional hysteresis loads, 9 concrete-filled square CFRP steel tube to analyze the failure mode, torque angle curve, triaxial strain, and the synergistic ...
Peng Kuan, Wang Qing-li
doaj   +2 more sources

Formation mechanism of defects in the wall of a petroleum casing steel pipe

open access: yes工程科学学报, 2022
In this study, the defects in the wall of petroleum casing steel pipe were investigated. The morphology and composition of inclusions in the defects of the steel pipe were analyzed using scanning electron microscopy–energy-dispersive X-ray spectroscopy ...
Wen-kui YANG   +5 more
doaj   +1 more source

Axial Stress Measurement of Steel Tubes Using Ultrasonic Guided Waves

open access: yesSensors, 2022
Axially loaded steel tubes are widely used as primary structural members in civil engineering structures. In this paper, a stress measurement method for axially loaded steel tubes is developed based on the linear relationship between the group velocity ...
Siyuan Zhu   +3 more
doaj   +1 more source

Real-time prediction model of slag composition in electric arc furnace steelmaking

open access: yes工程科学学报, 2020
To realize the real-time prediction of slag composition in the smelting process and provide the assistance to the operations in electric arc furnace (EAF) steelmaking process such as charging, the influence factors on the slag composition in the furnace (
Ling-zhi YANG   +6 more
doaj   +1 more source

Control of Shrinkage Porosity and Spot Segregation in Ø195 mm Continuously Cast Round Bloom of Oil Pipe Steel by Soft Reduction

open access: yesMetals, 2020
Based on the Ø195 mm round bloom continuous casting of oil pipe steel, a two dimensional thermal-mechanical coupled model has been developed to investigate the deformation behavior of round bloom during soft reduction (SR) in the reduction force mode ...
Liang Li   +5 more
doaj   +1 more source

Nonlinear analysis of FRP-concrete-steel solid columns

open access: yesAdvances in Mechanical Engineering, 2023
In order to study the axial compression performance of the FRP (fiber reinforced polymer)-concrete-steel solid columns (FCSSC), the nonlinear analysis program of FCSSC was compiled in this paper.
Wenyu Hou   +3 more
doaj   +1 more source

Constitutive Model and Hot Processing Map of Ni-Cr-Fe Heat-resistant Alloy for Advanced Ultra-Supercritical Boilers [PDF]

open access: yesTeshugang
Thermal compression deformation experiments on Ni-Cr-Fe heat-resistant alloy for advanced ultra-supercritical boilers were conducted using a Gleeble-3500 thermal simulator testing machine over a temperature range of 950 ℃–1 250 ℃, strain rates of 0.01 s ...
Gao Pei, Huang Guijun
doaj   +1 more source

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