scholarly journals Stability and Failure Mechanism Analyses of the Zhenggang Landslide in Southwestern China

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Shengnian Wang ◽  
Weiya Xu ◽  
Jinyuan Liu
Keyword(s):  
Failure Mechanism ◽  
Limit Equilibrium ◽  
Geological Structure ◽  
Analysis Method ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
Complex Landslide ◽  
Zone Ii ◽  
The Stability ◽  
Evolution Tendency

The Zhenggang landslide is an ancient complex landslide located at southeastern Tibetan Plateau, China. Due to intensive rainfalls in 2008 and heavy snowfalls in 2009, the Zhenggang landslide exhibited a high probability of reactivation once again. In this study, geological structure, matter features, and macrodeformations of the Zhenggang landslide (including Zone I and Zone II) were investigated for uncovering its formation mechanism and evolution tendency first, and then the stability and failure mechanism analyses of the Zhenggang landslide were conducted in detail by a combined limit equilibrium and finite element analysis method. Results of geological investigations indicate that the Zhenggang landslide has undergone sliding several times and is in a metastable state now. The distribution of the activity of the landslide is a retrogressive landslide in Zone I but an advancing landslide in Zone II. Such conclusions are further proved by the numerical stability and failure analyses.

Influence of Bridging Arrangement Location on the Mechanical Characteristics of the High-Formwork Support System

2014 ◽  
Vol 580-583 ◽  
pp. 2232-2234
Author(s):  
Li Liu ◽  
Ya Nan Liu ◽  
Bo Wang ◽  
Ju Chao Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Support System ◽  
Mechanical Characteristics ◽  
Lateral Migration ◽  
Analysis Method ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
The Finite Element Analysis ◽  
The Stability

Bridging play a important role in guarantee the stability of the high-formwork support system as a whole, its arrangement location will affect the force of the frame body. This paper used the finite element analysis method to compare the bridging arrangement location under the beam with the bridging under the board which was arranged according to certain modules. the results show, the arrangement spacing of the bridging under the beam is greater than the bridging under the board, but its frame body lateral migration is smaller, sharing part of the axial force of beam bottom rod at the same time, that means the bridging under the beam is more beneficial for the stability of high-formwork support system.

Research on Calculation Method of the Stability Factor of Variable Cross-Sectional Concrete Filled Steel Tubular Laced Columns

2014 ◽  
Vol 587-589 ◽  
pp. 1420-1423
Author(s):  
Zhi Jing Ou ◽  
Lei Huang ◽  
Qiao Ling Yan
Keyword(s):  
Slenderness Ratio ◽  
Stability Factor ◽  
Computational Formula ◽  
Variable Cross ◽  
Analysis Method ◽  
Element Analysis ◽  
Cross Sectional ◽  
Finite Element Analysis Method ◽  
The Finite Element Analysis ◽  
The Stability

The finite element analysis method of variable cross-sectional Concrete-Filled Steel Tubular (CFST) laced columns is put forward. The influence of longitudinal elements slope and slenderness ratio on stability factor are analyzed, and the computational formula of slenderness ratio of variable cross-sectional CFST laced columns is presented. On the basis of the analytical results, a rational methodology for calculating the stability factor of four-element variable cross-sectional CFST laced columns is proposed.

Supporting Measure and the Effect Evaluation of the Unstable Foundation Pit

2015 ◽  
Vol 744-746 ◽  
pp. 647-651
Author(s):  
Shang Yu Han ◽  
Jing Xiong ◽  
Yi Zhang
Keyword(s):  
Building Construction ◽  
Analysis Method ◽  
Effect Evaluation ◽  
Foundation Pit ◽  
Element Analysis ◽  
Soil Nails ◽  
Finite Element Analysis Method ◽  
Support Measures ◽  
Study Results ◽  
The Stability

It is relatively common that the instability of foundation pit issue in the current process of building construction. Based on an unstable foundation pit engineering, analyzes the effectiveness of the soil nails, anti-slide pile and foundation bottom consolidation three types of support measures by using finite element analysis method. The three types of support measures are proven to be having certain effective to improve the stability of the unstable foundation pit which is based on the study results, and it is more effective by combining with the three types of support measures.

scholarly journals Finite Element Analysis Method of Slope Stability based on Fuzzy Statistics

2021 ◽  
Vol 25 (1) ◽  
pp. 123-130
Author(s):  
Zhongjie Wang ◽  
Min Lin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Slope Stability ◽  
Analysis Method ◽  
Soil Slope ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
Fuzzy Statistics ◽  
The Stability ◽  
Rock And Soil

In order to reduce the risk of slope stability evaluation due to the fuzziness of calculation parameters, a finite element analysis method of slope stability based on fuzzy statistics is proposed. Based on the principle of quasi-static method and with the help of the finite element software COMSOL multiphysics, this paper studies the stability of the gravel soil accumulation rock slope under the action of different seismic acceleration. By analyzing the displacement, plastic zone and safety factor of the rock soil slope, the stability of the rock soil slope is analyzed. The research results show that the fuzziness of mechanical parameters of rock and soil slope will lead to the fuzziness of position displacement and stress analysis results of rock and soil slope, and the analysis of rock and soil slope with the method of fuzzy finite element analysis can strengthen the comprehensive understanding of position displacement, stress and safety of rock and soil slope by engineers and technicians, and reduce the stability of rock and soil slope due to the fuzziness of calculation parameters to a certain extent Evaluate the risk qualitatively.

Use of the Finite Element Analysis Method in Pedodontics

2018 ◽  
Vol 55 (4) ◽  
pp. 666-675
Author(s):  
Mihaela Tanase ◽  
Dan Florin Nitoi ◽  
Marina Melescanu Imre ◽  
Dorin Ionescu ◽  
Laura Raducu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Model ◽  
Analysis Method ◽  
Ansys Software ◽  
Concentrated Force ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
The Finite Element Analysis ◽  
Solid Type

The purpose of this study was to determinate , using the Finite Element Analysis Method, the mechanical stress in a solid body , temporary molar restored with the self-curing GC material. The originality of our study consisted in using an accurate structural model and applying a concentrated force and a uniformly distributed pressure. Molar structure was meshed in a Solid Type 45 and the output data were obtained using the ANSYS software. The practical predictions can be made about the behavior of different restorations materials.

scholarly journals Finite Element Analysis of Foundation Pile Anchor Support System

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Zhenli Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Construction Projects ◽  
Analysis Method ◽  
Support Structure ◽  
Foundation Pit ◽  
Element Analysis ◽  
High Rise ◽  
Finite Element Analysis Method ◽  
Foundation Pile

With the continuous development of urban construction projects in HebeiProvince, the rise and development of high-rise buildings and undergroundengineering, the design and research of foundation pit support structure has become more and more important. The design of the foundation pit support structure directly affects the settlement and position changes of the building itself and the surrounding stratum. In this paper, the characteristics of foundation pit support are analyzed, and the related theories of finite element analysis method are introduced. Combined with the actual situation of Hebei Province, the finite element analysis method is used to simulate the construction method of foundation pile anchor support structure system. The design was analyzed and studied.

scholarly journals Factor of Safety Reduction Factors for Accounting for Progressive Failure for Earthen Levees with Underlying Thin Layers of Sensitive Soils

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Adam J. Lobbestael ◽  
Adda Athanasopoulos-Zekkos ◽  
Josh Colley
Keyword(s):  
Finite Element ◽  
Strain Softening ◽  
Progressive Failure ◽  
Limit Equilibrium ◽  
Thin Layers ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Limit Equilibrium Methods ◽  
The Stability ◽  
Reduction Factors

The effects of progressive failure on flood embankments with underlying thin layers of soft, sensitive soils are investigated. Finite element analysis allows for investigation of strain-softening effects and progressive failure in soft and sensitive soils. However, limit equilibrium methods for slope stability analysis, widely used in industry, cannot capture these effects and may result in unconservative factors of safety. A parametric analysis was conducted to investigate the effect of thin layers of soft sensitive soils on the stability of flood embankments. A flood embankment was modeled using both the limit equilibrium method and the finite element method. The foundation profile was altered to determine the extent to which varying soft and sensitive soils affected the stability of the embankment, with respect to progressive failure. The results from the two methods were compared to determine reduction factors that can be applied towards factors of safety computed using limit equilibrium methods, in order to capture progressive failure.

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