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Figure 4. Uplift Pressures and Drainage System Options.: Inertia Forces

The document discusses uplift pressures and drainage systems for dams. It presents three options for how cracking in a dam could affect the drainage system and uplift pressures: 1) zero uplift pressure in cracks, 2) pre-earthquake uplift pressures in cracks, and 3) full uplift pressures in cracks. It also shows the transient evolutions of uplift pressures in a seismically induced crack.

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Enrique
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42 views1 page

Figure 4. Uplift Pressures and Drainage System Options.: Inertia Forces

The document discusses uplift pressures and drainage systems for dams. It presents three options for how cracking in a dam could affect the drainage system and uplift pressures: 1) zero uplift pressure in cracks, 2) pre-earthquake uplift pressures in cracks, and 3) full uplift pressures in cracks. It also shows the transient evolutions of uplift pressures in a seismically induced crack.

Uploaded by

Enrique
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Figure 4. Uplift pressures and drainage system options.

Figure 5. Cracking options: Effect of cracking on the drainage system.

Inertia forces

opening
closing

Initial uplift distribution

zero uplift pressure in crack


(USBR 1995, CDSA 1997 (high seismicity))

Pre-earthquake uplift pressures in crack


(USACE 1995, FERC 1991, CDSA 1997 (low seismicity))

Full uplift pressures in crack


(ICOLD 1986)

Figure 6. Transient evolutions of uplift pressures in seismically induced crack.

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