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This slide contains
1. Introduction of Overhead and Underground Cables
2. Main Components of Overhead Lines
3. Propertis of Conductor Materials
4. Commonly Used Conductor Materials
5. Line Supports
6. Different types of Line Support with properties
7. Insulator and its properties
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Future fast track model for new road over bridge spanning over railway yard- ...Rajesh Prasad
Implementation of 4 lane cable stayed road over bridge is nearing completion. It is felt that it could be a future fast track model for construction of ROB over busy railway yard in India
Uses of Larsa 4 d and Lusas 4 D models for Implementation of Cable Stayed ...Rajesh Prasad
The paper deals with how an engineering challenge confronted in a busy yard due to presence of a distressed bridge(ROB) was replaced by a Cable Stayed Bridge by adopting safe practices with proper quality and within the time frame. The paper was presented today ie 18.08.17 in a lecture organised by IIBE at Institution of Engineers, Mumbai
Flow forming of tubes is an advanced version of metal spinning.it is the method of chip less forming.it has good dimensional tolerance.good flexibility.and moreover it has a lot of advantages in machining process.
The Akashi Kaikyo bridge - longest suspension bridge in the worldADARSH _
Case Study of the Longest Suspension Bridge in the world - The Akashi Kaikyo Bridge. In this presentation, various structural features of this bridge are discussed and a few videos provided helps us to get a better understanding of it.
A STUDY ON MECHANICAL PROPERTIES OF ALUMINUM 6063 BASED HYBRID COMPOSITESSuryamech5
1.Hybrid metal matrix composites were successfully fabricated using stir casting method.
2.Reinforcement particles such as Silicon carbide and graphite were uniformly distributed in Al matrix.
3.The hardness and tensile strength of the composite is greatly increased with increasing of graphite particles in Aluminium matrix.
4.When adding constant 5% of Sic carbide, the tensile strength is increased.
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3. BASIC INFORMATIONS
SITUATED IN REASI DISTRICT OF JAMMU & KASHMIR
DESIGN – ARCH BRIDGE
MATERIAL USED – STEEL & CONCRETE
TOTAL LENGTH – 1315 METER
ARCH LENGTH – 480
LONGEST SPAN – 467 METER
ARCH SPAN – 467 METER
NUMBER OF SPANS – 17
HEIGHT – 359 METER [ RIVER BED TO FORMATION]
DEGREE OF INCLINATION – 43 TO 77
4. IMPORTANT FACTS
OFFICIAL PROJECT NAME : DESIGN & CONSTRUCTION OF
SPECIAL BRIDGE ACROSS THE RIVER CHENAB AT 50/800 ON THE
KATRA-LAOLE SECTION OF THE UDHAMPUR – SRINAGAR –
BARAMULLA RAIL LINK PROJECT
THE CLIENT : KONKAN RAILWAY CORPORATION LTD, INDIA
THE CONSTRUCTER : AFCONS INFRASTRUCTURE LTD, INDIA
ARCHITECT : WSP IN FINLAND WITH SUBCONSULTANT
LEONHARDT, ANDRA UND PARTNER, GERMANY
BRIDGE DECK CARRIES TWO RAILWAY TRACKS AND DRDO
MAKES IT WORLD FIRST BLAST-PROOF RAILWAY BRIDGE
ITS HEIGHT, ALMOST 29 METER MORE THAN EIFFEL TOWER (330
METER), MAKES IT THE WORLD HIGHEST RAILWAY BRIDGE AND
TOTAL COST IS AROUND 1486 CRORE AFTER COMPLETION
5. - AS MANY AS 3200 PEOPLE WORKED ON CONSTRUCTION OF
THIS CHALLENGING ICONIC BRIDGE TO MAKE IT ONE OF A
MARVEL OF INDIA
6. DESIGN OF BRIDGE
THE DESIGN SPEED OF RAILWAY OS SET TO BE 100 KM/H
WIND LOAD CORRESPONDS TO MAXIMUM WIND PRESSURE OF
1500 PASCAL AND WIND SPEED UP TO 266 KMPH
THE BRIDGE IS DESIGNED TO WITHSTAND EARTHQUAKE FORCES
OF THE HIGHEST INTENSITY ZONE-V [MAGNETUDE 8]
THE DESIGN LIFE OF THE BRIDGE SHOULD BE 120 YEARS
FATIGUE ASSESMENT HAS TO BE DONE AS PER BS:5400 PART – 10
THE SUPERSTRUCTURE IS A PLATE GIRDER WITH A CLOSED
DECK, WHERE RAILS ARE CONNECTED
THE CLOSED DECK KEEPS THE RAINWATER OUT AND PROVIDES
MOSTLY DRY ENVIRONMENT BELOW THE DECK
7. GEOLOGY
THE CHENAB BRIDGE IS LOCATED IN THE TRICKIEST SECTION OF
THE JAMMU–UDHAMPUR–SRINAGAR–BARAMULLA RAIL ROUTE,
WHERE THE TYPICAL GEOLOGY CONSISTS OF YOUNG HIMALAYAN
ROCK
THE SITE COMPRISES OF SHIWALIKS AND PRETERTIARY ROCKS
AND THE MAIN SUB-TYPE OF ROCKS COMPRISES OF DOLOMITE
AND LIMESTONE
SOME OF PIER LOCATIONS COMPRISE QUARTZITE AND SHALE
ROCKS AND THERE IS NO SIGNIFICANT SHEAR ZONES OR CAVITIES
IN BOTH THE ABUTMENTS
TOP LAYERS OF THE ROCKS AT ABUTMENTS ARE HIGHLY
FRACTURED AND REPRESENT A BLOCKY MASS
HOWEVER, THE BOTTOM LAYERS OF ROCKS ARE STABLE AND
STRONG ENOUGH FOR A GOOD FOUNDATION
8. CONSTRUCTION
FIRSTLY, THE FOUNDATION AND SLOPE STABILIZATION WORKS
ARE STARTED AND A TOTAL OF 18 PIERS WERE CONSTRUCTED
AFTER ERECTION OF THE MAIN PIERS BY CABLE CRANE , THE
DECK IS LAUNCHED UP THE AXES OF SUPPORT S40 AND S50
THE DERRICK CRANE IS PLACED ON TOP OF THE DECK TO
LOWER THE ARCH SEGMENTS FROM DECK LEVEL TO THE
ERECTION FRONT OF THE ARCH
THE ERECTION PROCESS OF THE DECK AND THE ARCH
PROCEEDS SIMULTANEOUSLY UP TO A MAXIMUM CANTILEVR
LENGTH OF 48 METER
WHEN THE NEXT ARCH PIER SUPPORT WOULD BE REACHED,
TEMPORARY CABLES SET UP TO SUPPORT CONSTRUCTED ARCH
9. STRUCTURAL PLAN OF THE
CHENAB BRIDGE
USE OF DERRICK AND CABLE
CRANE IN ARCH CONSTRUCTION
10. AFTER THAT, THE NEW ARCH PIER IS CONSTRUCTED USING
CABLE CRANES ON THE FREE END AND THIS PROCESS IS
CONTINUED UNTILL THE LAST PIER OF ARCH IS
CONSTRUCTED
THE SUPERSTRUCTURE AND THE ARCH WILL BRIEFLY FORM
A TRUSS GIRDER, CANTILEVERING OUT FROM ARCH
ABUTMENT
THE FINAL SEGMENT OF THE ARCH IS CONSTRUCTED USING
A CABLE CRANE AND TWO HALVES OF THE ARCH IS ADJUSTED
USING HYDRAULIC JACKS BEFORE THE FINAL CONNECTION
FINALLY, THE TEMPORARY CABLES ARE REMOVED AND THE
FINAL CONNECTIONS WILL BE MADE
11. STEEL & CONCRETE DETAILS
TEKLA SOFTWARE IS EMPLOYED FOR DETAILING USING
STRUCTURAL STEEL SUITABLE FOR -20°C TO 40°C
CONSTRUCTION OF THE BRIDGE REQUIRED 25000 TON OF
STEEL & 4000 TON OF REINFORCED STEEL AND TO ENHANCE
SAFETY & SECURITY, THE BRIDGE IS MADE OF 63MM-THICK
SPECIAL BLAST-PROOF STEEL
TOTAL OF 46000m3 CONCRETE WAS REQUIRED AND THE MAIN
CHORD MEMBERS WERE FILLED WITH SELF – COMPACTING
CONCRETE FOR ENHANCING OVERALL STIFFNESS AND
ROBUSTNESS
BOTH ENDS OF THE BRIDGE HAS BEEN CONNECTED WITH
THE HELP OF HIGH STRENGTH FRICTION GRIP (HSFG) BOLTS
AND IT IS MARKED AS GOLDEN JOINT
EIGHT MILLION CUBIC METRES OF EXCAVATION WAS DONE
AND THE BRIDGE WILL BE PAINTED WITH A SPECIAL
CORROSION-RESISTANT PAINT, WHICH LASTS FOR 15 YEARS
12. CONCLUSION
THE BRIDGE WAS CONSTRUCTED IN ONE OF THE MOST COMPLICATED
AND ISOLATED TERRAINS. ONE OF THE BIGGEST CHALLENGES
INVOLVED WAS CONSTRUCTION OF BRIDGE WITHOUT OBSTRUCTING
THE FLOW OF CHENAB RIVER.
THE PROJECT WAS APPROVED IN DECEMBER 2003 AND AFTER
18 YEARS THE BRIDGE WAS COMPLETED AND INAUGURATED ON 13TH
AUGUST 2022. LAYING OF RAILWAY TRACKS WAS STARTED IN
FEBRUARY 2023 AND THE BRIDGE ALONG WITH THE ENTIRE ROUTE IS
EXPECTED TO BECOME OPERATIONAL BY THE JANUARY 2024.
THE BRIDGE WILL SURELY BOOST THE REGION’S INDUSTRIAL AND
AGRICULTURAL SECTORS BY ALLOWING ALL–WEATHER
CONNECTIVITY BETWEEN THE VALLY AND REST OF INDIA.
REFERENCE : 1. theconstructor.org
2. seminarsonly.com
3. wsp.com