Results 1 to 10 of about 23,628 (107)

A Solution to Remove Railway Track Discontinuities at Spiral Junctions [PDF]

International Journal of Mechanical Engineering and Applications, 2020
To design railway track layouts, engineers use tangent and circle segments. To maintain curvature and bank angle continuities between flat straight lines, with zero curvature, and banked circles, they use spiral segments where curvature and bank angle vary linearly as function of distance.
Jean-Pierre Pascal
openaire   +3 more sources

The Transition Spiral and its Introduction to Railway Curves [PDF]

Nature, 1922
openaire   +2 more sources

EVALUATION OF ULTIMATE STRENGTH OF RAILWAY VIADUCTS WITH COLUMNS REINFORCED WITH SPIRAL REBARS USING NONLINEAR DYNAMIC ANALYSIS

Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)), 2016
Tsukasa Mizutani, Tomonori Nagayama, Nagisa Nakamura   +2 more
openaire   +4 more sources

Digitalization of process management in the agro-industrial complex [PDF]

E3S Web of Conferences, 2023
The article is devoted to the consideration of the current problem of developing heuristic approaches in operational scheduling of production processes.
Mavzovin Vladimir, Klevanskiy Nikolay, Scherbakov Alexander, Ilyasov Talgat, Safin Airat, Sokolova Viktoriia   +5 more
doaj   +1 more source

Barriers to Transnational Passenger Rail Services in Croatia and Bosnia and Herzegovina – A Qualitative Perspective

Promet (Zagreb), 2021
Railway infrastructures and services in the countries of former Yugoslavia have been in a downward spiral since the early 1990s. There have been scattered investments to lift services up to appealing levels after the war, but a continuous downward trend ...
Tadej Brezina, Borna Abramović, Denis Šipuš, Takeru Shibayama   +3 more
doaj   +1 more source

New Cubic Trigonometric Bezier-Like Functions with Shape Parameter: Curvature and Its Spiral Segment

Journal of Mathematics, 2021
This work presents the new cubic trigonometric Bézier-type functions with shape parameter. Basis functions and the curve satisfy all properties of classical Bézier curve-like partition of unity, symmetric property, linear independent, geometric ...
Abdul Majeed, Muhammad Abbas, Amna Abdul Sittar, Mohsin Kamran, Saba Tahseen, Homan Emadifar   +5 more
doaj   +1 more source

The Structural Design and Optimization of a Railway Fastener Nut Disassembly and Assembly Machine

Machines
During the maintenance of railway fasteners, there are issues with the current nut disassembly and assembly operation, including low efficiency, heavy reliance on manual labor, and high physical strain. A mechanical device has been designed to move along
Xiangang Cao, Guoyin Chen, Mengzhen Zuo, Jiasong Zang, Peng Wang, Xudong Wu   +5 more
doaj   +1 more source

Research on the Deformation Mechanism of Railway Subgrade under Buried Strike–Slip Fault Dislocation

Applied Sciences
With the gradual densification of China’s railway network, more and more railways are inevitably crossing active fault zones. Creep dislocation and stick–slip dislocation of the fault zones can lead to uneven deformation and cracks in the railway ...
Jingwei Liang, Yangsheng Ye, Degou Cai, Hongye Yan, Junkai Yao   +4 more
doaj   +1 more source

Study on the measurement of buckle pressure of rail elastic strip fastener based on modal method and ultrasonic method

Journal of Low Frequency Noise, Vibration and Active Control
The railway elastic strip fastener system is heavily used in the laying of seamless lines, where the buckle pressure of elastic strip fasteners is an important part of railway safety inspection.
Fan Zhang, Wentao Song, Feifan Chen
doaj   +1 more source

Recent advances in embedded technologies and self‐sensing concrete for structural health monitoring

Structural Concrete, EarlyView.
Abstract Fully embedded and spatially diffuse sensors are central to the advancement of civil and construction engineering. Indeed, they serve as an enabling technology necessary for addressing the current challenges associated with through‐life management and structural health monitoring of existing structures and infrastructures. The need to identify
Marco Civera, Ahmad Naseem, Bernardino Chiaia   +2 more
wiley   +1 more source