Assessment of bearing capacity and permeability of foundation rocks at the Gumustas Waste Dam Site (NE Turkey) using empirical and numerical analysis

A ring footing is found to be of practical importance in supporting symmetrical constructions for example silos, oil storage container etc. In the present paper, numerical analysis was carried out with explicit code FLAC3D 7.0 to investigate bearing capacity of a ring footing on geogrid reinforced sand. Effects of the ratio n of its inner/outer diameter (Di/D) of a ring footing, an optimum depth to lay the geogrid layer were examined. It was found that an intersection zone was developed in soil under inner-side (aisle) of ring footing, contributing to its bearing capacity. Substantial increase of bearing capacities could be realized if ratio n of a ring footing was around 0.6. Numerical results also showed that, bearing capacity of a ring footing could increase significantly if a single-layer geogrid was laid at a proper depth under the footing. Similar contribution was found if a double-layer geogrid was implemented. However, such increases appeared to be rather limited if a triple-layer geogrid or a four-layer geogrid was used. A double-layer geogrid was recommended to increase the bearing capacity of a ring footing; the depth to lay this double-layer geogrid was also discussed.

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Numerical analysis for load-bearing capacity and cushioning performance of structural unit of molded pulp product

2011 International Conference on Electric Information and Control Engineering ◽

10.1109/iceice.2011.5777279 ◽

2011 ◽

Author(s):

Jiao Wang ◽

Jinlong Chen ◽

Hongwei Ji

Keyword(s):

Numerical Analysis ◽

Bearing Capacity ◽

Structural Unit ◽

Load Bearing Capacity ◽

Load Bearing

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Nonlinear Numerical Analysis of SRC Frame Middle Joints

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.376.231 ◽

2013 ◽

Vol 376 ◽

pp. 231-235

Author(s):

Cheng Li ◽

Yun Zou ◽

Jie Kong ◽

Zhi Wei Wan

Keyword(s):

Finite Element ◽

Numerical Analysis ◽

Bearing Capacity ◽

Axial Load ◽

Load Ratio ◽

Experimental Results ◽

Steel Ratio ◽

Finite Element Software ◽

Axial Load Ratio ◽

Hysteretic Performance

Nonlinear numerical analysis for the force performance of frame middle joint is processed in this paper with the finite element software of ABAQUS. Compared with experimental results, numerical analysis results are found to be reasonable. Then the influence of factors such as shaped steel ratio and axial-load ratio are contrastively analyzed. The results show that shaped steel ratio has a greater influence on the bearing capacity and hysteretic performance of the structure, but the axial-load ratio has less influence.

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Numerical Analysis for Bolt Length Based on the Stress Response of Anchorage Surrounding Rock

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.4481 ◽

2012 ◽

Vol 204-208 ◽

pp. 4481-4485

Author(s):

Bin Wang ◽

Fu Jun Zhao ◽

Wen Bin Peng

Keyword(s):

Numerical Simulation ◽

Stress Response ◽

Numerical Analysis ◽

Bearing Capacity ◽

Distribution Curve ◽

Surrounding Rock ◽

Effective Length ◽

Plastic Failure ◽

Deep Rock ◽

Peak Value

The current researches on bolt length are rarely concerned with self-bearing characteristics of anchorage surrounding rock，its stress response is seldom used to analyze the bolt effective length. Tangential stress σθ of surrounding rock is sensitive to mechanical variation of surrounding rock plastic failure fields. When surrounding rock bolted, the distribution curve of σθ presents internal and external peak values from the surface rock to the deep rock, which is verified by numerical simulation. Internal peak value of σθ curve increases with the bolt length, which means the bearing capacity of surrounding rock in plastic failure division is improved, correspondingly, external peak value decreases which shows the supporting behavior of the deep rock is weakened. The results of numerical simulations prove that there exists an effective value of bolt length. If bolt length beyond it, the bearing capacity of anchorage surrounding rock cannot be improved obviously.

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