Rigid frame

As a framework is called in statics an idealized construction whose bars can transmit both train and pressure also bend.

Such frames usually have a square elevation, vertical frame bars hot sticks or poles, the horizontal bars. The frame corners are than to assume rigid. Multiple frames can be put together similar to the truss to a more complex structure ( floor frame).

A frame is stored for three times static indefinite, unless it owns a total of three joints. The classical method for determining the average responses of a frame is the principle of virtual displacement, added nor the iterative methods of Kani and Cross. In more recent time frame are also calculated using the finite element method. The Vierendeel is described by the static model of the frame.

The extension also bows are to be counted among the frames. In this sense, for example, three times statically indeterminate bearing arch of the bridge is to be regarded as Müngstener frame.