Electroslag welding of chemical apparatus of heavy sheet double-layer steel

1980 ◽  
Vol 16 (11) ◽  
pp. 647-648
Author(s):  
V. B. Potapov ◽  
V. A. Ermilov ◽  
V. E. Kostin
Keyword(s):  
Double Layer ◽  
Chemical Apparatus ◽  
Electroslag Welding ◽  
Layer Steel

scholarly journals Research on Inductance Calculations for Degaussing Windings of a Double-layer Steel Cylinder

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Chao Zuo ◽  
Zuoshuai Wang ◽  
Wentie Yang ◽  
Jiangjun Ruan ◽  
Liezheng Tang
Keyword(s):  
Double Layer ◽  
Steel Cylinder ◽  
Layer Steel

Design of long-span double-layer steel bracket for the roof of squat silo

2015 ◽  
pp. 1139-1143
Author(s):  
JianHua Shao ◽  
XiaoFeng Ye ◽  
ZaiHui Wang ◽  
XianBin Huang
Keyword(s):  
Double Layer ◽  
Long Span ◽  
Layer Steel

Load transfer mechanism of novel double-layer steel-LHDCC-steel sandwich panels under punching loads

2021 ◽  
Vol 226 ◽  
pp. 111427
Author(s):  
Zhenyu Huang ◽  
Xiaolong Zhao ◽  
Wei Zhang ◽  
Zhanxia Fu ◽  
Yingwu Zhou ◽  
...  
Keyword(s):  
Double Layer ◽  
Load Transfer ◽  
Sandwich Panels ◽  
Transfer Mechanism ◽  
Load Transfer Mechanism ◽  
Layer Steel

High Overload Penetration Test and Analysis of the Multi-Layer Steel Target

2011 ◽  
Vol 295-297 ◽  
pp. 1178-1182
Author(s):  
Li Shuang Liu
Keyword(s):  
Double Layer ◽  
Test System ◽  
Penetration Test ◽  
Storage Test ◽  
Steel Target ◽  
Test Errors ◽  
And Storage ◽  
Layer Steel

High-g accelerometer and storage test system is designed for the measurement of multi-layer steel targets penetration. The penetration test of the double layer steel target is performed, and the verload acceleration is obtained when the projectile penetrates the steel target. According to the overload data, the effective overload accelerations are concluded. The effective overload accelerations gained when projectile penetrates the double steel targes are 81078g and 152061g respectively. Also from the calculation, it can be concluded that the test errors are all less than 10%, which can meet the requirement of penetrating multi-layer steel targets.

scholarly journals Analysis of Stress and Deformation Characteristics of Deep-Buried Phyllite Tunnel Structure under Different Cross-Section Forms and Initial Support Parameters

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Hao Wu ◽  
Xiaohua Yang ◽  
Shichun Cai ◽  
Binjing Zhao ◽  
Kunlong Zheng
Keyword(s):  
Large Deformation ◽  
Double Layer ◽  
Soft Rock ◽  
Surrounding Rock ◽  
Original Design ◽  
Supporting Structure ◽  
Initial Support ◽  
Stress And Deformation ◽  
Rock Tunnels ◽  
Layer Steel

Deep-buried soft rock tunnels exhibit low strength and easy deformation under the influence of high ground stress. The surrounding rock of the soft rock tunnel may undergo large deformation during the construction process, thereby causing engineering problems such as the collapse of the vault, bottom heave, and damage to the supporting structure. The Chengwu Expressway Tunnel II, considered in this study, is a phyllite tunnel, with weak surrounding rock and poor water stability. Under the original design conditions, the supporting structure exhibits stress concentration and large deformation. To address these issues, three schemes involving the use of the double-layer steel arch to support, weakening of the steel arch close to the excavation surface, and weakening of the steel arch away from the excavation surface to support were proposed. Using these schemes, the inverted radius was varied to explore its influence on different support schemes. For simulation, the values of the inverted radius selected were as follows: 1300 cm, 1000 cm, and 700 cm. The proposed support plan was simulated using FLAC3D, and the changes in the pressure between the initial support and surrounding rock, the settling of the vault, and the surrounding convergence were investigated. The numerical simulation results of monitoring the surrounding rock deformation show that the double-layer steel arch can effectively reduce the large deformation of the soft rock well. When the stiffness of one of the steel arches was weakened, the support’s ability to control the deformation was weakened; however, it still showed reliable performance in controlling deformation. However, changing the radius of the invert had an insignificant effect on the deformation and force of the supporting structure.

Axial Compression Behaviour of Concrete-Filled Double-Layer Steel Tubular Column

2021 ◽  
Author(s):  
Li Wencong
Keyword(s):  
Axial Compression ◽  
Double Layer ◽  
Peak Load ◽  
Axial Stiffness ◽  
Compression Tests ◽  
Conventional Concrete ◽  
Compression Behaviour ◽  
Compressive Performance ◽  
Cft Column ◽  
Layer Steel

<p>Nowadays, height of supertall buildings with height over 300 meters have been successively renewed in the world. To improve the global stability of the supertall building, mega-columns with excellent seismic, wind-resistance and axial compressive performance are recommended to be set in its perimeter. Concrete-filled double-layer steel tubular column (CFDLT column) transforming from the concrete-filled double-skin steel tubular column (CFDST column) by filling the hollow part of cross-section with concrete was proposed by the author. In this study, axial compression tests of CFDLT column, CFDST column and conventional concrete-filled steel tubular column (CFT column) specimens were carried out to investigate the axial compression behaviour of them. The experimental results showed that the CFDLT column specimen exhibits higher axial compressive strength and larger energy dissipation capacity than the CFDST column and the conventional CFT column specimens. It was found that the axial stiffness of CFDLT column degrades slower than that of the conventional CFT column right after the peak load. And, it is expected that the CFDLT column can be used as a mega-column in the tomorrow’s supertall buildings.</p>

Assessment of Risks during Large-Span Steel Truss Arch Bridge Construction

2013 ◽  
Vol 361-363 ◽  
pp. 1353-1357
Author(s):  
Wei Zhou Li ◽  
Zhong Ju Feng ◽  
Dong Liang Xun ◽  
Sheng Rong Zuo ◽  
Xiao Jun Che ◽  
...  
Keyword(s):  
Risk Analysis ◽  
Double Layer ◽  
Risk Evaluation ◽  
Control Measures ◽  
Principal Line ◽  
Arch Bridge ◽  
Construction Period ◽  
Steel Truss ◽  
Tied Arch Bridge ◽  
Layer Steel

Chongqing Chaotianmen Bridge is by far the world's largest three-span continuous half-through double-layer steel truss tied arch bridge. Risk evaluation and risk analysis are made to the bridge during construction period. At the same time, various measures are taken to avoid construction risks and accidents. The principal line of risk controls is clear with reasonable control measures. Chongqing Chaotianmen Bridge was completed and available for traffic on April 29, 2009, its various technical and quality indicators are in accordance with design and specifications.

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