Girder Bridge
Basics Of Bridge Design, Bridge Truss Types And Its Design
There are four major factors used in describing a bridge. By combining these terms one can give a general description of most bridge design types.
# span (simple, continuous, cantilever),
# material (stone, concrete, metal, etc.),
# placement of the travel surface in relation to the structure (deck, through),
# form (beam, arch, truss, etc.)
The three basic types of spans are – simple spans, continuous spans and cantilever spans. Any of these spans may be constructed using beams, girders or trusses. Arch bridges are either simple or continuous (hinged). A cantilever bridge may also include a suspended span.
Examples of the three common surface configurations are - Deck, Pony and Through. In a Deck configuration, traffic travels on top of the main structure; in a Pony configuration, traffic travels between parallel superstructures which are not cross-braced at the top; in a Through configuration, traffic travels through the superstructure (usually a truss) which is cross-braced above and below the traffic.
Simple deck beam bridges are usually metal or reinforced concrete. Other beam and girder types are constructed of metal. The end section of the two deck configuration shows the cross-bracing commonly used between beams. The pony end section shows knee braces which prevent dality Astrology Spirituality Christianity Spirituality Feng Shui Spirituality Graphology Spirituality Kabbalah Spirituality Meditation Spirituality Metaphysics Spirituality Mysticism Spirituality New Age Spirituality Numerology Spirituality Reiki Spirituality Religion Spirituality Tarot Sports and Fitness Sports and Fitness Aerobics Sports and Fitness Archery Sports and Fitness Baseball Sports and Fitness Basketball Sports and Fitness Bodybuilding Sports and Fitness Cricket
A truss is a structure made of many smaller parts. Once constructed of wooden timbers, and later including iron tension members, most truss bridges are built of metal. Types of truss bridges are also identified by the terms deck, pony and through which describe the placement of the travel surface in relation to the superstructure (see drawings above). The king post truss is the simplest type; the queen post truss adds a horizontal top chord to achieve a longer span, but the center panel tends to be less rigid due to its lack of diagonal bracing.
Should you have any queries or need more information on bridge truss design and construction, please feel free to contact us.
Email us at info@outsourcestructuraldrafting.com
Visit us at http://www.outsourcestructuraldrafting.com/ to get more information.
About the Author
Richard Bose is structural engineer at OSD – an established Structural drafting design consultant offering full services such as structural design analysis, structural drafting and shop drawings services at affordable rates. Email us info@outsourcestructuraldrafting.com
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I have a project to make a paper girder bridge!-(stupid,huh?)-... I need to know how it is constructed! Thanks
Yes, what are the rules.
A paper company has a 30 foot high bridge in front of their headquarters building, made of corrugated cardboard, supporting a large SUV.
you can glue paper into enough layers to emulate cardboard, then roll it into a roll. That roll would support your weight.