The bending frame system consists of columns, beams and bending connections. In addition to distributing gravitational loads, this system can also maintain lateral loads caused by wind and earthquakes and maintain the lateral stability of the structure. The nipple fitting frame system does not require secondary systems such as braces and concrete or steel shear walls or other lateral bearing systems to maintain its lateral resistance to wind and earthquake loads, although it does have the advantage of any. Two systems can be combined with them.
How to use a nipple fitting?
It should be noted that bending frames are not limited to frames with tight-fitting fasteners. These frames can also have semiconductor connections that have a slight constraint. Semiconductor fittings referred to in the US AISC Regulations as PR are fittings that distribute the bending anchor but after the deformation of the structural components due to the applied loads, a considerable period of time has elapsed between the structural members connected to the structuretypes of nipple fittings comes. This change in the connection changes the way the load is resisted and distributed in the structure, and as a result, the flexibility of the connection must be taken into account in the analysis of the structure.
Rational prices of nipple fitting in 2020
In the tenth issue of the National Building Regulations of Iran, entitled Design and Implementation of Steel Buildings (Edition 92), the connections are classified into three main types of simple connections, fully retractable bending joints and semi-bending bending joints, and are defined as follows.
Simple connections are connections that are flexible (without rotational constraints) and can only be designed against shear (backing reaction) and the resulting effects. Simple connections must meet the conditions of freedom of time at the end of the members. To meet these conditions, some non-elastic deformations are allowed with respect to the relevant limitations in the connection.
A fully trapped bending connection is a connection in which the relative period between the connected members is negligible. This type of connection must be strong enough to maintain the angle between the connected members.
A semiconductor bending connection is a connection through which, although the bending anchors are transferred, the relative period between the connected members is not insignificant and is unavoidable. When using this type of connection, the force-deformation response characteristics must be considered in the structural analysis. The characteristics of the force-deformation response of a semiconductor connection must be determined analytically or based on valid laboratory resultsnipple connector fitting Semi-enclosed fittings must have sufficient capacity in the case of resistance, stiffness and deformation.