A bridge is a structure providing passage over an obstacle without closing the way beneath. What is psc? ... PSC bridge. Data ... Superstructure. 1. Deck slab is designed conforming to IRC 18-2000 and ... courbon's theory. â¢. Materials used ...
An undergraduate project carried out by
NARESH DIXIT P.S Under the guidance of
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What is a bridge? A bridge is a structure providing passage over an obstacle without closing the way beneath. What is psc? Pre-stressed concrete is basically a concrete in which internal stresses of a suitable magnitude and distribution are introduced so that stresses resulting from external loads are counteracted to a desired degree
Existing bridge,
• 15 years old. • High intensity of traffic in NH. • Up gradation of all NH roads to 4-lanes in progress.
Covers all the major concepts and topics of civil engineering.
PSC bridge
Structural design.
Data collection(hydrological, geological, and geotechnical)
Surveying and preparing index map of area and fixing an alignment of proposed bridge)
Hydrological design
Deciding materials and calculating design discharge.
Fixing of linear water way from hydrological data. Design discharge. 1. Ryves formula, Q=CA0.667. 2. Rational method, Q= Aioλ. 3. Area velocity method, Q=AV. Linear waterway, w=4.8√Q. Afflux, x= (v2/2g)*((L2/C2L12)-1) L1=a/(d+x) Scour depth, D=1.34[Db2/Ksf]1/3 { If D40m I.L.=10% (for tracked vehicle) 4. Centrifugal force: C=WV2/127R. 5.Wind load: According to IRC 6-2010 depending upon the geographical locations and the terrain of the surrounding area. 6.Horizontal force due to water currents: P=0.52KV2 7.Buoyancy force. 8.Longitudinal force due to tractive effect of vehicle as per IRC 6-2010. 9. Longitudinal force due to breaking of vehicle as per IRC 6-2010 10.Seismic forces as per IRC 6-2010 depending upon seismic zones. 11.Earth pressure.
Foundations are designed conforming to IRC 78-2000 as per the required depth and type of foundation. Substructure (abutments and piers) are designed conforming to IRC 78-2000 as per the calculated loads. Superstructure.
1. Deck slab is designed conforming to IRC 18-2000 and IS 1343-1983 using pigeauds curves. 2. Girders are designed using influence line diagram and courbon’s theory.
Materials used must conform to IS 1343-1980 and IS 1785(part 2)-1983
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DESIGN OF BRIDGES-N. KRISHNA RAJU. ESSENTIALS OF BRIDGE ENGINEERING- D. JOHNSON VICTOR. IS 456-2000 ,PLAIN REINFORCED CONCRETE- CODE FOR PRACTICE. IRC 6-2000 STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGES-LOADS AND STRESSES IRC 21-2000 STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGES-CEMENT CONCRETE(PLAIN AND REINFORCED) IRC 78-2000 STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGES-FOUNDATIONS AND SUBSTRUCTURE IRC 18-2000 DESIGN CRITERIA FOR PRESTRESSED CONCRETE BRIDGES (POST TENSIONED MEMBER) IS 1343-1980 INDIAN STANDARD CODE OF PRACTICE FOR PRE STRESSES CONCRETE IS 1785-1983 INDIAN STANDARD SPECIFICATIONS FOR PLAIN AND HARD DRAWN STEEL WIRE DESIGN OF PSC-T.Y.LIN AND NED H.BURNS DESIGN OF PSC-KRISHNARAJU.N
