Cracking dams intro


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What are the forces
acting on a buttress dam?


These are the main forces on a dam.
Place your mouse on each force to see it on the dam.


Force Diagram

There are other forces that may act on an arch dam:
  • internal water pressure: in pores, cracks, joints, and seams
  • temperature variations in the concrete
  • earthquake loads
  • settlement of the foundation or abutments


Forces on a dam in a simuation

To the left is a dam modelled for simulation. You must tell the program where the dam feels forces. You won't include all of the possible forces on the dam on the first simulation; just try to include the main ones to get a feel for the general behavior of the dam. Then include some other forces on the dam to get an idea of which ones matter.

Here, the forces are signified by the yellow dots. First, on the left hand edge, the dam feels the force of the water. Second, on the slanted right edge, the dam feels the weight of the concrete at a single point (it really should be at the centroid). The force of the water and the weight of the concrete are the two most important forces to include in your simulation.

Along the bottom edge, the red dots tell the program that the dam is fixed to the foundation.



Buttress dam anatomyButtress dam history