نتایج جستجو برای: mashyy saturated soil liquefaction during earthquakes

تعداد نتایج: 1877124  

Journal: :مهندسی عمران فردوسی 0
جواد هدایتی مسعود سلطانی محمدی محمود یزدانی

in the realistic manner, piles are similar to the slender columns that soil around them acts as a lateral support. the piles situated in the liquefiable soil layers, loss their lateral supports due to the liquefaction resulted from the seismic ground motion. in this case, pile has the potency of axial instability similar to the unsupported columns. this instability can lead to the lateral buckl...

2005
Mohamed Ashour Gary Norris Sherif Elfass

Strain wedge (SW) model formulation has been used, in previous work, to evaluate the response of a single pile or a group of piles (including its pile cap) in layered soils to lateral loading. The SW model approach provides appropriate prediction for the behavior of an isolated pile and pile group under lateral static loading in layered soil (sand and/or clay). The SW model analysis covers the ...

Journal: :تحقیقات مهندسی کشاورزی 0
داود نیک نژاد عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی آذربایجان شرقی حسن رحیمی استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران.

this study investigates the vertical replacement of salts, variability of electrical conductivity (ec) and soil acidity (ph) due to direct electrical current. a plexiglas cylinder 100 cm in depth with a 14 cm radius was used as a soil container and filled with uniform moist soil to 90 cm. during the experiments, the bottom 10 cm of soil in the cylinder was kept saturated. a steel bar was used a...

2015
Zengjun Wang Bianjiang Liu Shifeng Su Min Tang

Objective: Human semen is the jelly-like substance mainly containing semenogelin 1 (Sg1) and fibronectin (Fn) with the characteristics of coagulation and liquefaction in a short time. In our previous study, we have identified that Eppin could interact with Sg. Eppin C-terminal fragment bind the Sg fragment containing the only cysteine in human Sg I (Cys-239). Besides that, during semen liquefac...

Journal: :Canadian Geotechnical Journal 2021

Flow liquefaction, which is characterized by sudden collapse following the unstable behavior of saturated loose sand, may lead to most catastrophic consequence all liquefaction-related phenomena. This note presents a systematic experimental investigation into flow liquefaction potential sand under various initial and cyclic shear conditions. The responses are compared with monotonic results an ...

Journal: :Earth surface dynamics 2021

Abstract. The 2017 Mw 7.1 Puebla–Morelos intraslab earthquake (depth: 57 km) severely hit Popocatépetl Volcano, located ? 70 km north of the epicenter. seismic shaking triggered shallow landslides on volcanic edifice, mobilizing slope material saturated by 3 d antecedent rainfall. We produced a landslide map based semi-automatic classification 50 cm resolution optical image acquired 2 months af...

Journal: :Soil Dynamics and Earthquake Engineering 2021

Liquefaction hazard induced by seismic events might affect the stability of buried pipelines, with permanent displacements embedded structure as a consequence. In this context, pipe uplift is main concern, already widely discussed in literature. paper, further insights to assess phenomenon and related effects on pipelines are provided based results shaking table tests pipes different apparent u...

Journal: :computational methods in civil engineering 2011
s.a. sadrnejad

a few of the presented soil behavior models are capable of predicting the triggering and post liquefaction and also shear band mechanism through the soil media. the assessment of earth-dam body behavior as a soil structure made of cohesive soil in core and non-cohesive soil as the core supports, including water interaction at upstream through earthquake upon a multi-line constitutive equations ...

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