A Numerical and Experimental Investigation of a Special Type of Floating-Slab Tracks

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

This thesis presents a research study on the dynamic behavior of a special typeof FST used in recently built subway system in Doha, Qatar. The special FST has acontinuous concrete slab with periodic grooves for which the track can be modeled asperiodic structure with a slab unit having two elements with different cross sections.Extensive numerical and experimental investigations were conducted on a multi-unitfull-scale mockup track. The numerical investigations were carried out using both a fastrunning model based on the Dynamic Stiffness Method and a detailed Finite Elementmodel. In the experimental campaign, experimental vibration test was performed toidentify the actual vibration response of the mockup track. Results from theexperimental investigations were then used for verifying the numerical models andcarrying out a model updating exercise for the fast running model. The model updatingprocess was carried out according to an automated hybrid optimization approach.Finally, the updated model was extended to an infinite model and used in a parametricstudy to investigate the influence of varying groove’s thickness on the dynamicbehavior of the special track with infinite length for both bending and torsion scenarios.The parametric study suggested that reducing the thickness below 50% of the fullthickness of the slab significantly affects the dynamic behavior of the special FST.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0b5d1f11-852b-44f1-a440-d04d3b493fbf

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2018414_1.pdf

بيانات النشر

ألقاب المؤلفين

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اللغة

English

المصدر والدورية

اسم المصدر

A Numerical and Experimental Investigation of a Special Type of Floating-Slab Tracks

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

محمد ف حسين

الإعداد

ساطية عبدالناصر العباسي

الاقتباسات الببليوغرافية