Civil Engineering CBE110 Lecture 10

Analysis of Frames Fig. 1. Types of frame joints. Fig. 2. Free body diagrams for frames.

Stability of frames: E = 3j + c, U = 3m + r Analysis of Frames Stability of frames: E = 3j + c, U = 3m + r Satisfying the geometrical stability, any frame can be classified as: Unstable if U < E. Stable and statically determinate if U = E. Stable and statically indeterminate if U > E, where the degree of indeterminacy is given by U – E = (3m + r) – (3j + c)

Example (1) Draw the internal force diagrams for the shown frame. Analysis of Frames Example (1) Draw the internal force diagrams for the shown frame.