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wonder_arc9
Joined: 26 Mar 2008
Posts: 2
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 Posted: Wed Mar 26, 2008 3:23 pm Post subject: PIN JOINT AND MOVEMENT CONNECTION |
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Hi every body.
is here any body who can tell me about Pinjoint and Movement connections with the help of rough sketch or diagram.... |
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mx2
Joined: 18 Jan 2006
Posts: 1827
Location: Miami, Florida
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| Posted: Wed Mar 26, 2008 4:32 pm Post subject: |
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| Quote: | | http://urban.arch.virginia.edu/~km6e/tti/tti-summary/full/frame-conn1-1-19-light.jpeg |
Look at the bottom right of the picture...this is a pin joint connection at the Golden Gate Bridge.
Here's the basic idea:
| Quote: | | http://web.usna.navy.mil/~link/EM477/2links.gif |
mx2.5
_________________
*Art of Architecture: The conscious use of skill and creative imagination in the production of an aesthetic building.
*Science of Architecture: The calculated use of technical skill and knowledge in the construction of a functional building. |
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teamjdc
Joined: 25 Oct 2007
Posts: 145
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| Posted: Wed Mar 26, 2008 7:33 pm Post subject: |
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Do you mean pin and moment?
Moment connections resist laterally, pins do not. |
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wonder_arc9
Joined: 26 Mar 2008
Posts: 2
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| Posted: Wed Mar 26, 2008 7:39 pm Post subject: |
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| yes I know it,,,but i want sketch diagram of them |
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teamjdc
Joined: 25 Oct 2007
Posts: 145
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| Posted: Thu Mar 27, 2008 9:22 am Post subject: |
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There is no single sketch.
Basically, a conection can be designed to allow movement or not.
The simplest expression of the two is in steel construction. A pinned connection would be bolted and a moment connection would be welded. |
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JonBailey
Joined: 18 Oct 2007
Posts: 104
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| Posted: Mon Apr 07, 2008 5:33 am Post subject: |
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Most modern high-rise buildings and many mid- and low-rise buildings rely on steel moment frames to resist lateral loads arising from winds or earthquakes. Lateral loads on a building caused by wind are externally applied and easy to visualize. Conversely, lateral loads from earthquakes result from internal inertial loads that develop as the ground, and therefore the building's foundation, accelerates. This is similar to the force that a passenger standing on a bus feels when the bus accelerates. In the case of a building, inertial forces are primarily at the floor levels, where the weights are concentrated.
Steel moment frames consist of beams and columns joined by a combination of welding and bolting. They resist lateral loads through bending of the frame elements as illustrated in the top figure. In the case of wind loads and moderate earthquakes, steel frames designed using the current building code are intended to remain elastic. In other words, when the loading ceases, all of the steel beams and columns constituting the frame are expected to return to their original position without any permanent deformation
This is not the case for a major earthquake, however. During strong ground motion, the steel members are expected to behave in a ductile manner: stretching and absorbing energy. After the earthquake, permanent deformation of the steel-frame members is expected. Several special detailing provisions in the current code are intended to ensure ductile performance; however, as explained in the accompanying article, this performance was not achieved during the Northridge Earthquake.
The bottom figure identifies the various components of a typical moment connection. These or similar connections are used to join all of a moment frame's members. In all moment connections, the beam flanges are welded directly to the column, thereby providing bending resistance. Beam webs are usually bolted to the column using shear connection plates. It should be noted that, normally, and especially in more recent construction, few of a building's beams and columns are used as components of moment frames. Consequently, most of the steel framing is joined only by simple bolted connections and does not contribute to the lateral-load resistance.
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Jon Bailey
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