Tipos de ligação

Extended End Plate Moment Connection

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This connection is the end plate moment connection. It is made by shop-welding a plate to the end of a beam and field-bolting it to a column or to another beam. The four bolts around the tension flange transmit the flange force into the column. Additional bolts may be needed in deeper sections. A bolt may also be added near the neutral axis of the beam to prevent gaps between the plates.

Double Sided Shear Connection

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This is a double-sided shear connection. A dangerous situation can arise when filler beams frame into opposite sides of a girder and share the same holes in the girder web. One way to avoid this is to offset the beams. Another solution is shown here; simply add an extra bolt beyond those needed to carry the shear. This extra bolt, at the bottom of the connection, goes through only one set of double angles and can be used to hold the right-hand beam temporarily in position until the left-hand beam is fitted up, then all the bolt-holes can be filled.

Bolted Top and Seat Shear Connection

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This is a bolted top shear connection. A top and seat connection uses fewer field bolts and has the advantage of having a place to set the beam during erection. This presumes that the seat angle is attached to the column flange prior to setting the beam. In this example it is shown bolted, but it could as easily have been shop-welded. All the shear in this connection is carried by the seat angle; that is why it is heavier than the top angle, which is only there for torsional stability.
Top and seated connections may be used on column flanges, column webs or girder webs. In the case of large shear loads, a stiffener may be used beneath the seat.

Skewed Shear Connection

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This is a skewed shear connection. Members do not always meet at right angles. The easiest way to make this connection is to weld a bent plate to the web of the smaller member, in this case a channel, then