HOW BRIDGES WORK

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29 Νοε 2013 (πριν από 3 χρόνια και 10 μήνες)

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HOW
BRIDGES
WORK

THE BASICS


Dimensions?


Purpose?


Type?


Design?


$$$$$$?


Civil Engineer


Bridges


Canals


Roads

Civil Engineer


Water/Wastewater systems (sewers)


Foundations


Tunnels`


Airports

BEAM BRIDGE



A horizontal
structure resting on
piers.


Weight supported
by piers.


Constructed using
concrete/steel.


TYPES OF BEAM BRIDGES

TRUSS



a
structure
consisting of 1
or more
triangular units
whose ends are
connected.

TRUSS FORCES



Truss members
experience BOTH tension
and compression





Top and bottom
members experience
MORE force than the
center members




Truss is rigid and can
dissipate the weight
throughout the structure.

ARCH BRIDGE


Semi
-
circular structure
with abutments on each
end.


ALWAYS UNDER
COMPRESSION


The shape of the structure
dissipates the weight.

Pont du Gard


Vers Pont du Gard

c. 19BC
-
60AD

SUSPENSION BRIDGE


Cables are strung across
multiple towers and the deck
is suspended from these
cables. Cables are held in
place by anchor blocks


Cables are under tension,
towers are under compression


NAME THE BRIDGE

Newport Bridge


Newport, RI

June 28, 1969

NAME THE BRIDGE

Tower Bridge


London, England

1894

NAME THE BRIDGE

Sydney Harbor Bridge


Sydney, Australia

1932

NAME THE BRIDGE

Magdeburg Water Bridge


Elbe River, Germany

October, 2003

NAME THE BRIDGE

The Millennium Bridge


London, England

June 2000

Balsa Wood Bridge

Jeff Cathcart???