نتایج جستجو برای: arch dams

تعداد نتایج: 29671  

2010
Hong Zhong Gao Lin Jianbo Li

The simulation of damage process of high arch dam subjected to strong earthquake shocks is significant to the evaluation of its performance and seismic safety, considering the catastrophic effect of dam failure. However, such numerical simulation requires rigorous computational capacity. Conventional serial computing falls short of that and parallel computing is a fairly promising solution to t...

Journal: :Structural control & health monitoring 2023

This study proposes a method for evaluating crack variations on structural performance of concrete dams using observational and computational output. The is represented by the system entropy in dams, stress-strain field established incorporating observations simulations calculations. Considering characterization ability sample points, weighted sequence constructed with selected index system. Th...

2008
SUSAN ABRAHAM K. V. NARAYANAN

The shape of an arch dam has of paramount importance in its ultimate behavior and eventually settles all design criteria. Variable curvature arch dams evolved to be economical in shape optimization studies. In Finite Element Analysis, the arch dam geometry is to be modeled very accurately. But the arch dam geometry may be varying in the three dimensions and with irregular boundaries depending o...

Journal: :Tecnia 2022

The social, economic, and environmental consequences of the failure an arch dam make it essential to evaluate its dynamic response mitigate risk a disaster. Since slenderness flexibility these dams tend increase fluid-structure interaction during earthquake, this work compares hypothetical in Marañón river, northern Perú, for both full empty-reservoir conditions. Three formulations were used es...

Journal: :نشریه دانشکده فنی 0
جلال اکبری محمدتقی احمدی پیتر یان پال

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Journal: :The Journal of prosthetic dentistry 1983
G J Re R N Draheim T D Marshall J H Zinck J M Childers

T he last tooth in the dental arch frequently requires treatment of dental caries. Using the rubber dam, dentists encounter difficulty in preparing the distoproximal box because the bow of the clamp interferes with the dental handpiece. This problem has been partly ameliorated by the clamp with a long distal extension. However, in some instances, the extension impinges on the anterior border of...

2006
Jalal Akbari Mohammad T. Ahmadi Hamid Moharrami

This paper presents an applicable and practical computer program(ODPSAD) and suggests a new algorithm for geometry of concrete arch dams. In this program shape optimization of arch dams for static and dynamic loads and enhancement of its seismic behaviour is carried out. abutment excavation and dam body volumes have been considered as the objective function and in order to increase the consiste...

2011
Marco Lazzari Paolo Salvaneschi

The paper describes the first achievements and the future developments of the application of neural networks to structural engineering at ISMES. Two main fields of applications are presented: neural nets in design, with reference to the design of arch dams, and in data interpretation, with reference to the management of structural safety.

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