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Register a new userStudy of the behavior of the railway under train movement by changing the components of permanent way
دراسة سلوك الخطوط الحديدية بسبب حركة القطارات عند تغير مواصفات عناصر القسم العلوي
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Damascus University ورقة بحثية
Publication date
2010
fields
Transportation
and research's language is
العربية
Authors
محمد هاجم الوادي( باحث )
Created by
Shamra Editor
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تشهد شبكة الخطوط الحديدية السورية تحديثاً يشمل إعادة تأهيل الخطوط القديمة و إنشاء خطوط جديدة لتتوافق مع المواصفات الدولية الحديثة، و هذا يتطلب زيادة الحمولات المحورية و تحسين العناصر الجيومترية للخطوط مما يتطلب تغييراً في عناصر القسم العلوي للخط. سنتناول في هذا البحث دراسة تأثير تغير مواصفات الخط في شكل الموجة في الخط الحديدي الناتجة عند مرور القطارات فوقه، و حساب القوى في المنطقة الانتقالية عند تغير تلك المواصفات. أظهرت النتائج نشوء تغير مفاجئ في الضغط المنقول إلى طبقة البلاست ناتج عن تغير مواصفات الخط؛ لذلك يجب تفادي التغير النسبي في قيمة المعامل الخاص بالخط يزيد على 20 %، و كذلك من المفيد تأمين منطقة انتقالية يتغير فيها معامل الخط تدريجياً.
In this paper, the effects on the wave shape will be studied according to the track permanent components such as rail, sleepers or ballast. The results show there is a step change in stress on the ballast layer. It is important to prevent the step change in the track characteristic module over 20%. It is also useful to provide a transition zone to allow the gradate changing in track characteristic module.
References used
Dahlberg, T.;”Railway track dynamic – a survey”; Linkoping University, Sweden 2003
Timoshenko; “ Theory of elasticity”3.ed. 1951 Mc Graw Hill
Lichtenberger, B. “Handbuch Gleis”; Tetzlaff Verlag 2003 ;562P, Germany
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