نتایج جستجو برای: underground structures

تعداد نتایج: 468821  

Excess pore pressure under seismic loadings has always been a main concern in geotechnical engineering practices. Undergoing the phenomenon in a soil can cause the effective stress and hence the shear strength of the soil to decrease considerably and large deformations happen in the area. Generally, increasing the pore pressure occurs under the undrained condition. If it can be formed the drain...

Journal: :Social Thought and Research 1983

Journal: :Digital Signal Processing 2012
Ali Cafer Gürbüz James H. McClellan Waymond R. Scott

a r t i c l e i n f o a b s t r a c t Feature detection in sensing problems usually involves two processing stages. First, the raw data collected by a sensor, such as a Ground Penetrating Radar (GPR), is inverted to form an image of the subsurface area. Second, the image is searched for features like lines using an algorithm such as the Hough Transform (HT), which converts the problem of findin...

Journal: :international journal of civil engineering 0
f. messaoud university of tebessa m. s. nouaouria university of guelma

this paper presents a description of the equipment, testing procedure, and methodology to obtain ground mechanical parameters. the p-y curves for laterally loaded piles are developed. methods for the development of p-y curves from pressure meter and dilatometer (dmt) test are described. p-y curves are used in the analysis to represent lateral soil-pile interaction. the pressure meter offers an ...

Journal: :نشریه دانشکده فنی 0
احمد جعفری محمد فاروق حسینی عارف علی پور

0

There are several methods for analysing the behaviour of underground structures under different loading conditions. Most of these methods have many simplifications; therefore, in some cases, the results are too conservative and a very high safety factor, usually of more than 2 is needed. On the other hand, for stability analysis and the designing of support systems, these methods consider segme...

Journal: :civil engineering infrastructures journal 0
m.j. seyedan graduate, department of civil engineering, faculty of engineering, ferdowsi university of mashhad, iran ehsan seyedi hosseininia assistant professor, department of civil engineering, faculty of engineering, ferdowsi university of mashhad, iran

dynamic response of underground structures has always been a topic of concern for designers and researchers. the behavior of these complicated systems under blast loading is affected by various factors and parametric studies are required to investigate their significance. the importance of soil density around the underground structure through which, the waves of explosion of a penetrator bomb i...

The expansion of underground structures is important in urban areas with high population density. In most large cities in the world, urban development is spreading along the structures. These structures are generally located at shallow depth; therefore study of shallow tunnels in urban areas is critical for development. During the excavation of tunnels in urban areas, creating the asymmetric se...

2009
Olof Bekker

Cathodic Protection is the " Electrical " method of controlling and stopping the rust process of underground/submerged steel pipelines and structures.

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