Numerical Simulation for Uplift Bearing Capacity and Affecting Factors of the Digging Piles in Slope Ground

Based on the numerical simulation method, this paper has established the numerical simulation method by using of finite difference software of FLAC3D through establishing interface for digging pile-soil. It can consider mutual effect of digging pile-soil. The uplift bearing capacity of the digging pile in slope ground was calculated and the affecting factors of the bearing capacity were analyzed. The results show that the uplift bearing capacity has a negative correlation with the slope ratio, and has a positive correlation with the width or height of the foundation, which can be expressed as a quadratic polynomial. But when the slope ratio is smaller than a certain extent, the capacity no longer increases. Nonlinear regression analysis of calculation data are carried out. Finally, the calculation method of uplift bearing capacity about pile in the slope is developed, which can provide a reference to specification revision and engineering.

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Research on Bearing Characteristics of the Digging Foundation in Slopes Based on Interface

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.2040 ◽

2013 ◽

Vol 423-426 ◽

pp. 2040-2044

Author(s):

Bin Peng ◽

Yi Min Shang ◽

Rui Shan Tan ◽

Tao Mei

Keyword(s):

Numerical Simulation ◽

Regression Analysis ◽

Bearing Capacity ◽

Negative Correlation ◽

Mutual Effect ◽

Affecting Factors ◽

Slope Ratio ◽

Nonlinear Regression Analysis ◽

Foundation Soil ◽

Simulation Tools

The numerical simulation model was established by using numerical simulation tools of FLAC3D, through establishing interface for digging foundation-soil, which can consider mutual effect of digging foundation-soil. Bearing capacities of the digging foundation in slopes is calculated. The affecting factors of the bearing capacity are analyzed. The results show that the bearing capacity has a positive correlation with the distance between the foundation and the slope and has a negative correlation with the slope ratio, which can be expressed as a quadratic polynomial. Nonlinear regression analysis of calculation data are carried out and the fitting formula of the capacity ratio between pile in the slope and pile in the flat is obtained. Finally, the calculation method of horizontal bearing capacity about pile in the slope is developed, which can provide a reference to specification revision and engineering.

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Research on Stability Bearing Capacity for Pole and Tower Compression Members with Two Legs Connection

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.214.315 ◽

2012 ◽

Vol 214 ◽

pp. 315-319

Author(s):

Xian Lei Cao

Keyword(s):

Numerical Simulation ◽

Analytical Solution ◽

Bearing Capacity ◽

Analytical Method ◽

High Strength ◽

Simulation Method ◽

Elastic Theory ◽

Numerical Simulation Method ◽

Stability Bearing Capacity ◽

Compression Members

In order to research the stability bearing capacity of high strength pole and tower compression members, analytical method and numerical simulation method were used to study stability on high strength axial compression members. Researched the impact of different slenderness ratio, different cross-section factors on the bearing capacity; energy relationship was using in analytical method, the boundary conditions issue is simplified according to different end restraint capacity; the failure modes and stability bearing capacity of members were studied by numerical simulation. Compared with the experimental results show that the numerical simulation and elastic theory analytical solution overestimate the capacity of members, but the numerical results have better agreement than the elastic theory analytical solution, which can show the numerical simulation method is right. Experiment method can obtain more secure mechanical behavior of high-strength angle steel member with axial loading.

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409 Numerical simulation method for combusting multiphase flows using CIP method and finite difference method

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2005.7.0_25 ◽

2005 ◽

Vol 2005.7 (0) ◽

pp. 25-26

Author(s):

Yuya BABA ◽

Fumiteru AKAMATSU

Keyword(s):

Numerical Simulation ◽

Finite Difference ◽

Finite Difference Method ◽

Difference Method ◽

Multiphase Flows ◽

Simulation Method ◽

Cip Method ◽

Numerical Simulation Method

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An Analysis of the Impact Exerted on Bearing Capacity of Pier and Pile after Increasing Pile Cap Height

Shock and Vibration ◽

10.1155/2018/9867897 ◽

2018 ◽

Vol 2018 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Xianbin Huang ◽

Chenyang Liu ◽

Song Hou ◽

Chunyang Chen ◽

Yahong Wangren ◽

...

Keyword(s):

Numerical Simulation ◽

Bearing Capacity ◽

Seismic Waves ◽

Bending Moment ◽

Simulation Method ◽

Ground Acceleration ◽

Numerical Simulation Method ◽

River Bed ◽

Pile Cap ◽

The Impact

An analysis was carried out in this paper on the bearing capacity of pier pile and seismic performance rule when the low-pile cap is increased by 1 meter, 2 meters, and 3 meters. The bottom of the pile cap of pier no. 11 of Minjiang River bridge faces three “lows”: 7.6 meters lower than island, 4.6 meters lower than natural river bed, and 6.5 meters lower than low water level. The numerical simulation method is adopted to input three seismic waves of Wolong, Bajiao, and EL to evaluate the bearing capacity of pier and pile under strong earthquakes. Using the standard formula and numerical simulation method, it is observed that the bending moment and axial force of bridge pier show an insignificant change under different seismic waves when the pile cap is increased by 0–3 meters. With peak ground acceleration increased to 0.35 g, the vertical bearing capacity and flexural capacity of pier and pile gratify the requirements; however, the pile foundation will be subject to compression and bending damage.

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A Discussion of Reinforcement Timing Optimization for Main Inclined Shaft Roadway with Water Seepage

Geofluids ◽

10.1155/2020/8850911 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Minglei Zhang ◽

Chaoyu Chang ◽

Wen Cao

Keyword(s):

Numerical Simulation ◽

Bearing Capacity ◽

Simulation Method ◽

Field Application ◽

Surrounding Rock ◽

Water Infiltration ◽

Seepage Water ◽

Numerical Simulation Method ◽

Fissure Water ◽

The Impact

The infiltration and physical and chemical effects of fissure water often have a degrading effect on the strength and bearing capacity of the surrounding rock of the roadway. With the increase of the time of water infiltration, the roadway deformation increases exponentially, resulting in a higher risk of roadway destruction. In this paper, targeting at the supporting and protection issues associated with the main inclined shaft during the water-drenching, a numerical simulation method was established to evaluate the impact of the fissure water on the deformation of the surrounding rock of the roadway, and a solution to control the top water in main inclined shafts by grouting was proposed. Through the numerical simulation method, the effective penetration range of the slurry in the surrounding rock and the variation of the tunnel deformation with the grouting timing were studied. A method of combining numerical simulation with on-site monitoring to determine a reasonable grouting timing was proposed. The field application suggests that grouting at a reasonable timing can effectively control the influence of seepage water from the roof crack of the main inclined shaft on the deformation of the roadway surrounding rock, improve the integrity of the roadway surrounding rock, increase the bearing capacity of the support, and maintain the safety and stability of the roadway surrounding rock of the main inclined shaft. Furthermore, this study can provide insightful references to the grouting reinforcement adopted by similar main inclined shafts.

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