تحلیل سه بعدی از رفتار باربری رادیه شمعی بر روی رس نرم
Three-dimensional analysis of bearing behavior of piled raft on soft clay
قابل توجه دانشجویان مهندسی عمران در مقطع کارشناسی ارشد و دکترا و در شاخه ژئوتکنیک و خاک و سازه های دریائی
این مقاله تحلیل سه بعدی از رفتار رادیه شمعی بر روی خاک رس را با استفاده از نرم افزار تخصصی Abaqus سه بعدی بررسی می نماید..
همجنین رفتار شمعها در فاصله های مختلف و قرارگیری رادیه بر روی شمع ارائه می دهد و یک روش مدلسازی با استفاده از روش عددی Finit Element ارائه داده و در نهایت یک طراحی بهینه از قرارگیری شمعها و فاصله و قطر آنها بدست می آید.
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a b s t r a c t
The piled raft has proved to be an economical foundation type compared to conventional pile foundations.
However, there is a reluctance to consider the use of piled rafts on soft clay because of concerns
about excessive settlement and insufficient bearing capacity. Despite these reasons, applications of piled
rafts on soft clay have been increased recently. Current analysis methods for piled rafts on soft clay, however,
are insufficient, especially for calculating the overall bearing capacity of the piled raft. This study
describes the three-dimensional behavior of a piled raft on soft clay based on a numerical study using
a 3D finite element method. The analysis includes a pile–soil slip interface model. A series of numerical
analyses was performed for various pile lengths and pile configurations for a square raft subjected to vertical
loading. Relatively stiff soil properties and different loading types were also used for estimating the
bearing behavior of the piled raft. Based on the results, the effect of pile–soil slip on the bearing behavior
of a piled raft was investigated. Furthermore, the proportion of load sharing of the raft and piles at the
ultimate state and the relationship between the settlement and overall factor of safety was evaluated.
The results show that the use of a limited number of piles, strategically located, might improve both bearing
capacity and the settlement performance of the raft.
ن : civil-eng-projects
