کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
9951908 1432151 2018 22 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Full scale laboratory testing of ballast and concrete slab tracks under phased cyclic loading
ترجمه فارسی عنوان
آزمایشات آزمایشگاهی کامل در آزمایشگاه های توپ و بتونه بتنی تحت بارگذاری سیکلی مرحله ای
کلمات کلیدی
تست چرخه ای کامل در مقیاس راه حل راه آهن، سختی راه آهن، رفتار طولانی مدت مسیر، ریل بالاست و بتونی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Full-scale laboratory-based testing is used to compare the long-term settlement performance of a precast concrete slab track section to a ballasted track (with concrete sleepers) resting on a compacted substructure. The railway track substructure is constructed from a 1.2 m deep combined subgrade and frost protection layer, according to modern high-speed rail standards such as those specified in Germany. Phased cyclic loading is then used to simulate the primary loading mechanism of a train after 3.4 million load cycles representing many years' worth of train passages. Displacement transducers, earth pressure cells and accelerometers are employed to determine the permanent settlement, the cyclic displacement, transient stresses and vibrations of the track. The equipment, loading combinations, material properties and experimental displacement results are presented and compared. The results indicate that the ballasted track experienced 20 times more settlement when compared to the concrete slab track under the same loading conditions, even though the ballasted track was tested at a slightly higher compacted state due to the concrete slab track test being conducted first.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transportation Geotechnics - Volume 17, Part A, 1 December 2018, Pages 33-40
نویسندگان
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