000			03805nam a2200385 i 4500
008			110131s2011 ne a b 001 0 eng
010			_a 2010054313
020			_a9780415669573 _q(hardback)
020			_a041566957X _q(hardback)
020			_a9780203815779 _q(ebook)
020			_a0203815777 _q(ebook)
035			_a(OCoLC)ocn690084622
040			_aDLC _cDLC _dYDX _dBTCTA _dYDXCP _dDLC
049			_aBAUN_MERKEZ
050	0	4	_aTF250 _b.I53 2011
082	0	0	_222
100	1		_aIndraratna, Buddhima.
245	1	0	_aAdvanced rail geotechnology--ballasted track / _cBuddhima Indraratna, Wadud Salim, Cholachat Rujikiatkamjorn.
264		1	_aLeiden, The Netherlands : _bCRC Press/Balkema, _c[2011]
264		4	_c©2011
300			_axviii, 414 pages : _billustrations (some color) ; _c26 cm.
336			_atext _btxt _2rdacontent
337			_aunmediated _bn _2rdamedia
338			_avolume _bnc _2rdacarrier
505	0	0	_t-- 1. Introduction _t-- 2. Track structure and rail load _t-- 3. Factors governing ballast behaviour _t-- 4. State-of-the-art laboratory testing and degradation assessment of ballast _t-- 5. Behaviour of ballast with and without geosynthetics and energy absorbing mats _t-- 6. Existing track deformation models _t-- 7. A constitutive model for ballast _t-- 8. Track drainage and use of geotextiles _t-- 9. Role of subballast, its drainage and filtration characteristics _t-- 10. Field instrumentation for track performance verification _t-- 11. DEM modelling of ballast densification and breakage _t-- 12. FEM modelling of tracks and applications to case studies _t-- 13. Non-destructive testing and track condition assessment _t-- 14. Track maintenance _t-- 15. Recommended ballast gradations _t-- 16. Bio-engineering for track stabilisation.
520			_a"Ballast plays a vital role in transmitting and distributing the train wheel loads to the underlying sub-ballast and subgrade. Bearing capacity of track, train speed, riding quality and passenger comfort all depend on the stability of ballast through mechanical interlocking of particles. Ballast attrition and breakage occur progressively under heavy cyclic loading, causing track deterioration and rail misalignment affecting safety, and also demanding frequent and costly track maintenance. In the absence of realistic constitutive models, the track substructure is traditionally designed using empirical approaches. In this book, the authors present the detailed information on the strength, deformation, and degradation aspects of fresh and recycled ballast under monotonic, cyclic, and impact loading using innovative geotechnical testing devices. A new stress-strain constitutive model for ballast incorporating particle breakage is presented. The mathematical formulations and numerical models are validated using experimental evidence and field trials. The effectiveness of various commercially available geosynthetics for enhancing track drainage and stability is elucidated. Revised ballast gradations are presented for modern high speed trains capturing particle breakage. This book should prove useful for final year civil engineering students and postgraduates, and for practicing railway engineers with the task of modernizing existing designs for heavier and faster trains"--Provided by publisher.
520			_a"In this book, the authors present the detailed information on the strength, deformation and degradation aspects of fresh and recycled ballast under monotonic, cyclic, and impact loading using innovative geotechnical testing devices"--Provided by publisher.
504			_aIncludes bibliographical references and index.
650		0	_aBallast (Railroads)
700	1		_aSalim, Wadud.
700	1		_aRujikiatkamjorn, Cholachat.
900			_a34838
900			_bsatın
942			_2lcc _cKT
999			_c32151 _d32151