Results 41 to 50 of about 6,287 (218)

Numerical analyses of steel beam–column joints subjected to catenary action

Journal of Constructional Steel Research, 2012
Abstract This paper presents the numerical results of 6 beam–column joint tests using six types of connections: web cleat, fin plate, top and seat with web angles (TSWA) (8 mm thick angle), flush end plate, extended end plate, and TSWA (12 mm thick angle). Both static and explicit dynamic solvers were employed to overcome the problems of convergence,
Tan, Kang Hai, Yang, Bo
openaire   +3 more sources

Active Switching of Orbital Angular Momentum of Light Using Metasurfaces Incorporating Vanadium Dioxide

Nanophotonics, Volume 15, Issue 5, 16 March 2026.
This work presents a novel design strategy for active metasurfaces that actively switches OAM modes. The metasurface integrates VO2 within MIM meta‐atoms. Operating at 1500 nm, the designed platform enables large leaps in topological charge. For instance, the reflected beam can be switched from a topological charge of −1 in the insulating (M1) phase to
Qinghong Lyu, Qiuchen Yan, Yulan Fu, Xiaoyong Hu, Qihuang Gong   +4 more
wiley   +1 more source

Nonlinear analysis on mechanical behaviour of high strength steel extended endplate connections and equivalent T-stubs in fire considering axial force

Case Studies in Construction Materials, 2023
In fire, ignoring the axial force acting on the high strength steel (HSS) beam-column endplate connections when considering catenary action may lead to a safety risk for the whole steel structure.
Xuhong Qiang, Yue Shu, Xu Jiang, Yi Xiao
doaj   +1 more source

Experimental Evaluation of Prototype Seismic Retrofits for Precast Concrete Hollow‐Core Floors

Earthquake Spectra, Volume 42, Issue 1, February 2026.
Existing hollow‐core floors are vulnerable to nonductile failure and potential collapse under earthquake loading. This study presents the development and experimental evaluation of novel comprehensive seismic retrofits for hollow‐core floors. These retrofits include a strongback‐type retrofit that provides an alternative gravity load path through steel
Frank Büker, Lucas S. Hogan, Kenneth J. Elwood, Des K. Bull, Nicholas J. Brooke   +4 more
wiley   +1 more source

Robustness assessment of reinforced concrete structures for different failure scenarios

Structural Concrete, Volume 27, Issue 1, Page 279-313, February 2026.
Abstract This study describes the robustness assessment of 3D reinforced concrete structures analyzing the response of the 2D frames in different design configurations and failure scenarios. The structures are characterized by both frames with wide beams and seismic‐resistant frames with deep beams.
E. Miceli, Massimiliano De Iuliis, P. Castaldo   +2 more
wiley   +1 more source

Research on Catenary Action of Frame Structure in Progressive Collapse with Fiber Model [PDF]

Advances in Computer Science Research, 2015
An advanced finite element model (FEM) is presented with fiber beam-column element of OpenSees in this study. Using this FEM, non-linear static push-down analysis of a steel frame structure was carried out by the alternate load path method, with two different cases that two different columns are removed respectively.
Chuanqing Liu, Yuzhi Ji, Zhongfeng Shang, Tianxun Li   +3 more
openaire   +1 more source

Enhanced Rabi Splitting of Exciton‐Polaritons and Plasmon‐Polaritons in Lithium Niobate Metasurface

Laser &Photonics Reviews, Volume 20, Issue 1, 8 January 2026.
This study presents an ultrathin lithium niobate metasurface capable of inducing highly sensitive Fano‐shaped resonances, enabling strong coupling with TMDC monolayers and plasmonic metamaterials/metasurfaces. Adjustable Q‐factors lead to controllable coupling strengths, achieving substantial Rabi splitting.
Andergachew Mekonnen Berhe, Ambali A. Odebowale, Kirill Koshelev, Haroldo T. Hattori, Andrey E. Miroshnichenko   +4 more
wiley   +1 more source

Rate-temperature coupled deformation mechanism and constitutive parameters of catenary copper-magnesium alloy materials for high-speed railway

Baozha yu Chongji
With the increasing speed of trains, the impacts of mechanical shock, arc heat, and Joule heat on the high-speed railway catenary system have become increasingly significant.
Hongli WANG, Zelin ZENG, Xingya SU, Jing LING, Guiming MEI, Yanxiang LIANG, Lin JING   +6 more
doaj   +1 more source

Effect of reinforcing steel debonding on RC frame performance in resisting progressive collapse

HBRC Journal, 2016
This paper presents the experimental program performed to study the effect of reinforcing steel debonding on progressive collapse resistance of moment resisting frame designed and detailed in accordance with the Egyptian code provisions for seismic ...
Waleed Mohamed Elsayed, Mohamed A.N. Abdel Moaty, Mohamed E. Issa   +2 more
doaj   +1 more source

Dynamic Behaviour and Catenary Action of Axially-restrained Steel Beam Under Impact Loading [PDF]

Structures, 2017
In this paper, the dynamic behaviour and catenary action of axially restrained steel beam under impact loadings is examined through a combination of experimental and numerical investigations. It describes and discusses the results of six impact tests on the axially restrained welded H-beams by means of the drop hammer test machine. The main behavioural
Huo, J., Zhang, J., Liu, Y., Fu, F.
openaire   +2 more sources