Abstract
In electrification work of railways, steel truss structure, having fabricated steel masts or concrete poles, is generally used for supporting overhead line. The structure shall need bearing capacity of soil amounting 10-20t/m2 in order to support its weight and moment. However, in the electrificationwork of JNR Tohoku Line, it was found that the ground is as weak as 1t/m2 in bearing capacity at Mutsuichikawa Station. In order to solve the problem mentioned above, the authors developed a light weight overhead line structure of 15m in span, constructed with shapes and plates of 6061-T6 aluminum alloy. The design and test results of the structure are reported in this paper.The developed light weight portal structure is as light as 40% in weight as compared with that of the ordinary structures of the same class. As the results of tests at the actual spot, it was found to be durable to support the loads, which are to be expected by overhead line structure. The structure can endure uneven settlement of struts up to 312mm induced by the weak ground. However, its recovery after the settlement will easily be adjusted owing to its light weight.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
