design and construction of rail tracks
TRANSCRIPT
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MODERNISATION OF RAILTRACKS
GUIDED BY: PRESENTED BY:
Mrs.M SHIVA PARVATHI (M-TECH) K MANOJ REDDY (12C91A0144)Hea !" #$e e%ar#&e'# D PRADEEP (12C91A012)
De%ar#&e'# !" CIVI* EN++ J , V N SAI TEJA (12C91A0142)
HITS COE. N SDHEER KMAR(12C91A01/)
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ABSTRACTThe research topic is aimed at to study the design and consruc
railway tracks ,bridges ,buildings ,platforms and other Civil Eworks regarding in modernisation of railways in our country.
Railway Track Engineering presents conventional methods of
construction, maintenance and monitoring, along with modern
sophisticated track machines. It also comprehensively covers d
details and specifications of important track components.
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INTRODUCTION
•Indian railways is more than 1! years old.
• It is largest railway system in the world under one managem
• It is lifeline of our country.
• It is the biggest employer in the world.
•
1"# 1st
railway train $ourneyed distance of %%miles betweento Thana.
• 'riginally, operated by private companies Englishmen.
• 1(%)1(! *'I took over the all the private railways compa
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THE OLDEST INDIAN TRAIN
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INITIAL RAILWAY TRACKS IN IN
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FAILURES IN OLD TRACKS
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*AYIN+ O NE RAI*AYTRACKS
METHODOLOGY
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ORMATION
•
FORMATION TOP• TRACK FOUNDATION
• CESS
• BALLAST
•
SUB-BALLAST• BLANKET
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CONTENTS
•
BALLAST• RAILS
• SLEEPERS
• POINTS OF CROSSING
•
POINTS OF SWITCHES
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,A**AST DETAI*S
• It is the gr!"#r $teri# "s"##% &r'(e! st'!e 'si!g#e !* (!(er+ gr,e# !* s!* #)e* !* !* r'"!* the s#eeers t' tr!s$it the #'* .r's#eeer t' .'r$ti'! #%er/
•Si0e123$$ t' 45$$
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RAI*S
•
The r'##e* stee# se)ti'!s #i* e!* t' e!* i! r#',er s#eeers t' .'r$ ri#6% tr)(s re (!'6!Ri#s/
TYPES OF RAILS
7/ DOUBLE HEADED RAILS
2/ FLAT FOOTED RAILS
8/ BULLHEADED RAILS
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S*EEPERS
• S#eeers re $e$&ers ge!er##% #i* tr!s,erse ri#s+ '! 6hi)h ri#s re 9e* t' tr!s.er the #'*the ri#s t' the &##st !* the s"&gr*e
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TYPES O S*EEPERS
7/ WOODEN SLEEPERS2/ METAL SLEEPERS
8/ CONCRETE SLEEPERS
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IN CONSTRUCTION OF RAIL TRA
SUR;EYING
EARTHWORKS
BRIDGES
TRACKS
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LE;ELLING SUR;EY
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DI;ISIONS IN EARTHWORK
EARTH
WORK
EMBANKMENT
E
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GRADING PERCENTAGE OF BLAMATERIAL
S* IS Se3e Se Per5e'# Pass'6
(78 e6$#)
1. =3 $$ 733
2. 23 $$ >3 - 733
. 73 $$ 48 - >5
4. =/?5 $$ =2 - 4>
:. 2 $$ 2? - 52
. 433 $i)r'! 78 - 85
/. =25 $i)r'! 73 - 82
;. 272 $i)r'! 4 - 22
9. ?5 $i)r'! 8 - 73
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SOIL TYPES
Ideal +oil and oor +oils
Ideal soil properties-
• igh bearing capacity /&C0 in reference to static loads, minor settlement igh &C indynamic loads, due to uneual grain si2e, high structural resistance, and good consol
• Elasticity
•
+table as regards erosion• igh water permeability
• 3ilter criteria w.r.t ballast layer above and sub)soil below
• Cost effectiveness in supply and construction
• 4atural soils are rarely ideal soils.
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Poor Soil properties-
• 4on)cohesive
•5oose Cohesive
• +oft to semi)solid mi6ed soils with various contents of sand,
and water
• It contain solid rocks of irregular si2e, solid rocks with cohes
weathering elements.
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Geometrical requirements for the soil formation
+hould generally meet following reuirements-
• cross fall slope to be atleast 1-#! or #7 with tolerance of !.
• the finished top levels should be within 8 ) #cm
• finished soil surface to be in level in longitudinal direction/ 9
longitudinal base of ;m0, must not show hollow pits, road ve
ruts.• +ide slopes to e6tend in hori2ontal plane, minimum 1! cm be
theoretical finished lines, and later cut and dressed to the spe
dimensions.
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TYPICAL ;ALUES OF SOIL
S!<
T8%e
E32
( N=&&2 )
C,R
>
C
(N=5&)
?%er&
(N=5&2)
S!"#
5 2/5-8/5
Se&s!
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FILLING
COMPACTION
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COMPACTION
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Field Tests :
• ry density &yCalcium Carbide
Core Cutter
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3IE5> TE+T
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QUALITY ASSURAN! T!STS F"R S"ILS
i.
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I4 5?&'@R?T'RA
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THANK YOU