Zonal intelligent inversion of viscoelastic parameters of high arch dams using an HEST statistical model

The security researches of energy dissipation were always the focus in the High arch dams. Statistically, the trajectory type energy dissipation is the most widely used in the built high arch dams, and the protected plunge poor were always set downstream the dam body. However, the widely used protected plunge poor need large investment with the disadvantage of complicated operation and maintenance. Along with the construction of concrete high arch dam in the Southwest China, the “Reventment-Protected and Non-Bottom-Protected Plunge Pool” has been studied and proposed, which has the advantage of more simplified project design and more economy investment.

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Seismic Safety Evaluation of High Arch Dams Using Concrete Damage Theory

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.29-32.1476 ◽

2010 ◽

Vol 29-32 ◽

pp. 1476-1480

Author(s):

Zhi Guo Niu ◽

Jun Lu ◽

Ri You

Keyword(s):

Safety Evaluation ◽

Nonlinear Behavior ◽

Maximum Principal Stress ◽

Arch Dam ◽

Seismic Safety ◽

Arch Dams ◽

Earthquake Load ◽

Concrete Damage ◽

Damage Theory ◽

High Arch Dams

To reasonably evaluate the seismic behavior of high arch dams, a damage plasticity model is adopted to simulate the dynamic nonlinear behavior of dam concrete for a hydropower station. Combining with the viscous-spring boundary and compressibility reservoir model, the maximum principal stress on upstream and downstream surfaces is obtained. The results show that the effects of material nonlinearity damage on the dynamic response of the arch dam are significant under earthquake load.

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The Research on the Relation between Flexibility Coefficient and Buckling Stability of High Arch Dam

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.594-597.1932 ◽

2012 ◽

Vol 594-597 ◽

pp. 1932-1935

Author(s):

Hui Li ◽

Zheng Zhong Wang ◽

Xuan She

Keyword(s):

Differential Method ◽

Arch Dam ◽

Present Condition ◽

High Arch Dam ◽

North West ◽

Arch Dams ◽

South West ◽

Buckling Stability ◽

Flexibility Coefficient ◽

High Arch Dams

As a result of many high arch dams that are building and would be built in the south-west and north-west of China, arch dam is a kind of compressed thin buckle, not only effect by tension, but also by deformation. Thinner dam body with usage of increased levels of concrete and optimum designing, the local regions of high arch dams approach thin shell structure，which will lead to the structural buckling. Base on the above present condition, this paper would establish a series of generalized high and thin arch dam models whose height are 240m, and make theoretical analysis based on one of the crown- cantilever method- differential method for them, which attempts to provide a new method for the" critical flexibility coefficient ". At last, this paper would provide the relation between coefficient and buckling stability of high arch dam

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