نتایج جستجو برای: rockfill material

تعداد نتایج: 364492  

2017
Yunjia Wang Zhihong Zhao

Abstract—Rockfills are widely used in civil engineering, such as dams, railways, and airport foundations in mountain areas. A significant long-term post-construction settlement may affect the serviceability or even the safety of rockfill infrastructures. The creep behavior of rockfills is influenced by a number of factors, such as particle size, strength and shape, water condition and stress le...

Journal: :Proceedings of the Japan Society of Civil Engineers 1978

2014
Xu Wang Fei Kang Junjie Li Xin Wang Sheng-yong Chen

This paper investigates the potential application of artificial neural networks in permanent deformation parameter identification for rockfill dams. Two kinds of neural network models, multilayer feedforward network BP and radial basis function RBF networks, are adopted to identify the parameters of seismic permanent deformation for Zipingpu Dam in China. The dynamic analysis is carried out by ...

Journal: :تحقیقات مهندسی کشاورزی 0
جمال محمد ولی سامانی دانشیار گروه سازه های آبی دانشگاه تربیت مدرس رضا فرشاد دانشجوی کارشناسی ارشد سازه های آبی دانشگاه تربیت مدرس

pure rockfill dams have been found specific attention in watershed management and flood control, recently. in addition to hydraulic specific features, one of the important advantages of these structures is their consistency with nature and environment. normally, floods are accompanied with high sediment loads which may enter the body of dam. when flow through dam body governed by hydraulic grad...

2013
Hadi Mohammadzadeh

The rockfill structures are widely constructed throughout the world and rockfills are largely used in these structures as main materials or filler materials. In the crust of earth dams, the rockfill materials role is to stabilize the body of the dam, however, the behavior of these materials in Particular their shear strength is not fully understood. In this study, different tests have been cond...

Concrete faced rockfill dams (CFRDs) are among the structures that due to their advantages such ease of construction and low execution costs,have attracted more attention nowadays.Due to the fact that during large earthquakes,the hydrodynamic pressure will be large and cannot be ignored,the main purpose of this research is to apply reservoir hydrodynamic pressure of dam reservoir caused by the ...

2007
SILVIA GARCIA MIGUEL ROMO

Models of real systems are of fundamental importance in virtually all disciplines. Models make possible to predict or simulate a system’s behavior. Since the quality of the model typically determines an upper bound on the quality of the final problem solution, modeling is often the bottleneck in the development of the whole system. As a consequence, a strong demand for advanced modeling and ide...

Journal: :آب و خاک 0
سید علی موسوی ابراهیم امیری تکلدانی محمدهادی داودی

abstract rockfill dams are a type of hydraulic control structures used to protect river bed in cases where a considerable reservoir volume is available behind these structures; it could mitigate the floods and provide a gradual depletion of incoming volume of water so that the discharge passing downstream is decreased. one of the main issues on utilizing rockfill dams is to keep its permeabilit...

Journal: :Stroitel stvo nauka i obrazovanie [Construction Science and Education] 2019

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