Block Limit Analysis Method for Stability of Slopes During Earthquakes

2018 ◽  
Vol 23 (6) ◽  
pp. 764-769
Author(s):  
Xiaojun Yin ◽  
Lanmin Wang
Keyword(s):  
Limit Analysis ◽  
Analysis Method ◽  
Stability Of Slopes ◽  
Limit Analysis Method

scholarly journals Finite Element Limit Analysis of Active Earth Pressure in Nonhomogeneous soils

2016 ◽  
Vol 64 (4) ◽  
pp. 1131-1138
Author(s):  
Peyman Hamidi ◽  
Tohid Akhlaghi ◽  
Masoud Hajialilou Bonab
Keyword(s):  
Finite Element ◽  
Limit Analysis ◽  
Earth Pressure ◽  
Retaining Walls ◽  
Unit Weight ◽  
Analysis Method ◽  
True Solution ◽  
Soil Layers ◽  
Stability Of Slopes ◽  
Limit Analysis Method

Limit analysis is a useful method to calc1ulate bearing capacity of footings, earth pressure of retaining walls, stability of slopes and excavations. In recent years, many efforts have been focused on stability problems of geotechnical structures with the limit analysis method. The limit analysis method includes the upper and lower bound theorems. By using the two theorems, the range, in which the true solution falls, can be found. In this paper upper bound finite element limit analysis is used for calculate active earth force on retaining walls in non-homogeneous soils. Elements with linear strain rates cause to eliminate the necessity of velocity discontinuities between the elements. Nonlinear programming based on second order cone programming (SOCP) ,which has good conformity with Mohr-Coulomb criterion used in this paper. The sensitivity of active earth force against backfill surcharge (q), soil layers cohesion (Ci), soil layers unit weight (γi) and friction angle between soil and wall (δi) is surveyed.

Round Robin Calculations of Collapse Loads—A Torispherical Pressure Vessel Head With a Conical Transition

1997 ◽  
Vol 119 (4) ◽  
pp. 503-509 ◽  
Author(s):  
Y. Yamamoto ◽  
S. Asada ◽  
A. Okamoto
Keyword(s):  
Limit Analysis ◽  
Pressure Vessel ◽  
Standard Procedure ◽  
Round Robin ◽  
Evaluation Procedure ◽  
Analysis Method ◽  
Calculation Methods ◽  
Secondary Stress ◽  
Asme Code ◽  
Limit Analysis Method

Round robin calculations of collapse loads for a pressure vessel were made by 16 teams in Japan. The model is composed of a cylinder and a torispherical head with a conical transition. The structure is an example in which the stress classifications specified in the ASME Code are not strictly applicable. The calculations were performed to clarify the issue of the evaluation procedure using the limit analysis method specified in the ASME Code, Sect. III, and to check the sensitivity of calculation models and programs. It is found that the stress in the knuckle region has certain characteristics of secondary stress, yet still dominates the collapse of the vessel. Using the limit analysis to prove the validity of stress classifications is recommended. The sensitivity of the calculation methods is not so significant. Therefore, it is concluded that the limit analysis can be used as a standard procedure in regulations.

Analysis on Wave-Induced Circular Shearing Failure of Submarine Slope at Coastal Estuaries

2011 ◽  
Vol 243-249 ◽  
pp. 5161-5166
Author(s):  
Quan Sun ◽  
Fang Qiang Chang
Keyword(s):  
Limit Analysis ◽  
In Situ Measurement ◽  
Analysis Method ◽  
Flume Test ◽  
Submarine Slope ◽  
The World ◽  
Failure Conditions ◽  
Wave Induced ◽  
Limit Analysis Method

Wave-induced circular shearing failure of submarine slopes could be found at big estuaries all over the world. For this kind of failure form, the equations for Critical failure conditions and scale were created based on limit analysis method. The results were compared with those from elastic calculation, flume test and in situ measurement, which show that there are some coincidences between them.

scholarly journals Relation of Limit Equilibrium Method to Limit Analysis Method

1991 ◽  
Vol 31 (4) ◽  
pp. 37-47 ◽  
Author(s):  
Meiketsu Enoki ◽  
Norio Yagi ◽  
Ryuichi Yatabe ◽  
Elzaburo Ichimoto
Keyword(s):  
Limit Analysis ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Analysis Method ◽  
Equilibrium Method ◽  
Limit Analysis Method
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