Question

5. The following structure represents the two-dimensional model of a bent in a bridge. The distributed dead and live loads on the bent are 35 kN/m and 25 kN/m, respectively. The bent at points A and B is resting on square foundations which transfer the axial loads in columns AE and BD to the underlying soil. In order to design the foundations, we need to know the value of reaction forces. First, calculate the degree of indeterminacy of this structure. Second, calculate the reaction forces. The frame is fix supported at B and the support at A is a pin (El is constant. Neglect shear and axial deformations). (30 points) Spaghetti Bowl East, Chicago Interchange of highway ramps) LL = 25 kN/m DL = 35 kN/m 5m 4 m 2m 5m 2m

Answer 1