Question

Q.25)
Number of reaction components at pin joint of
a framed structure is..
​

Answer 1

Explanation:

PINNED CONNECTIONSgraphical representations of pinned supports

In contrast to roller supports, a designer can often utilize pinned connections in a structural system. These are the typical connection found in almost all trusses. They can be articulated or hidden from view; they can be very expressive or subtle.

There is an illustration of one of the elements at the Olympic Stadium in Munich below. It is a cast steel connector that acts as a node to resolve a number of tensile forces. Upon closer examination one can notice that the connection is made of a number of parts. Each cable is connected to the node by an end "bracket" which is connected to a large pin. This is quite literally a "pinned connection." Due to the nature of the geometry of the bracket and pin, a certain amount of rotational movement would be permitted around the axis of each pin.

One of the connections from the pyramid of I.M. Pei's Loiuvre addition follows below. Notice how it too utilized pinned connections.