Post on 07-Jul-2015
description
transcript
A SEMINAR PRESENTATION
ON
“BRIDGE CONSTRUCTION”
Submitted By:Robin Nirwal+6
Submitted To:
Bridge
.
History of Bridge Development
History of Bridge Development
1900
1920
2000
Compression Tension
Basic Concepts
Span - the distance between two bridge supports, whether they are columns, towers or the wall of a canyon.
Compression –
Tension -
Force -
Concrete has good compressive strength, but extremely weak tensile strength. What about steel cables?
Basic Concepts
Beam - a rigid, usually horizontal, structural element
Pier - a vertical supporting structure, such as a pillar
Cantilever - a projecting structure supported only at one end, like a shelf bracket or a diving board
Beam
Pier
Load - weight on a structure
Survey of Bridge
.
SHALLOW FOUNDATIONThere are variety of shallow foundation types used in construction of foundationColumns$ Combined or Cantilevered$ Mat$ Wall (strip)$ Spread Footing$ Strap Footing
Pile Foundation
END BEARING PILES
FRICTION PILES
COMPACTION PILES
TENSION PILES
ANCHOR PILES
FENDER PILES
TYPES OF PILE CHOSEN DEPENDS ON FOLLOWING FACTORS
TYPES OF WELL FOUNDATION OR CASSION
METHOD OF INSTALLATION
.
Diesel Hammer
Vibratory Method Of Pile Driving
Jacking Method of Insertion
PRECAST SEGMENTAL ERECTION TECHNIQUES
ERECTION ON FALSEWORK
ERECTION BY GANTRY
ERECTION BY CRANE
ERECTION BY LIFTING FRAME
FULL SPAN PRECAST ERECTION TECHNIQUES