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The anchored sheet pile is a relatively new structure fonn, whidt is suitable for large civil engineering because of its short construction time and less materials consumption. However, since the stress state of the anchored sheet pile is complex, and diJTicult to calculate, this structure is limited in use. In order to understand the stress and defonnation characteristics of the anchored sheet pile,...
Reinforced flexible structure, suitable for large deformation, in high grade highway bridge and road junction wide application. Most current engineering construction before, and not to the structure stress and deformation prediction effectively, put forward the construction of guidance. In this paper, ANSYS finite element software, the introduction of contact element, through to the plane strain problems...
Based on the basic theory of soil nonlinear numerical simulation, developing a suitable Macro documents for large-scale calculation software ANSYS and taking measures that the parameter Et of Duncan-zhang nonlinear constitutive model was modified under the gradual load, a method about the modification of the nonlinear constitutive model of soil and the characteristics analysis of soil layer were established...
Adopting Hardening-Soil finite element model based on unloading ,the improvement of grouting strengthening rear soil on deformation of the pit is studied. The results show that the reinforce influence on lateral deformation increases with the increasing of the excavating depth, the final lateral deformation reduces 13.6% than without reinforce, the displacement of pile top reduces 40.66%, but the...
Based on ABAQUS modeling platform, simplified modeling of pipeline interface in different directions of water supply network in KGWL zone was conducted, where finite element analysis was as the basic modeling approach. Then dynamic analysis was taken when a known seismic/earthquake wave was input. Through analysis of simulation results, the basis of earthquake damage on pipe interface was determined...
Considering soil structure interaction, research on the finite modeling with the settlement of high-rise structure, determined the extent of soil, and use SAP2000 to calculate the settlement of a tall building, settlement discipline of a structure and main factors are obtained, provided a useful reference for the design.
Referenced the fracture mechanics theories, based on the consideration of the destruction characteristics, the cementation force of ice in the frozen soil and fictitious crack, the wing crack fracture model of base layer of reservoir slope is proposed. The calculated results of finite element analysis agree with soil mechanics experimental results in terms of the soil mass of base layer of reservoir...
In this paper, vibration induced by spatial coupled vibration of vehicle-track-bridge system of urban rail transportation is transferred to the basement of buildings by ambient soil, it causes the vibration of the buildings. Aiming at this problem, a model for spatial coupled vibration of vehicle track-bridge system is established firstly, the reactions at bottom of bridge piers are obtained by random...
The effect of foundation treatment on ground motion is studied using finite element method. The difference between natural field and stabilized field is compared; the impacts of the stabilization zone width, depth, soil modulus stabilization, soil modulus and the seismic wave characteristics on response of the ground motion are also investigated. Study shows that foundation stabilization has insignificant...
Excavation in soft soil will lead to changes in stress state ground mass and subsequent ground losses inevitably occur. These changes affect the surrounding ground in the form of lateral movement which eventually impose direct strains onto nearby structures and can cause pile deviation and cracks. This study models the lateral movement in soft clay due to excavation using finite element simulation...
In this paper, computational analysis of characteristics of deformation and internal forces in the loading system due to deep foundation pit excavation is conducted by establishing two-dimensional finite element model of excavation system including subsoil, and elastic bracing diaphragm based on FEM algorithm. Through computational studies, it is shown that the location of maximum horizontal displacement...
In this paper based on the assumption of the isotropic elastic soil, Modified Winkler Foundation Model is established and a equivalent stiffness equation which considering the shear function of soil is derivated. The modified Winkler foundation model is compared with three other equivalent spring stiffness to study the sensitivity of the parameters. Pile-Soil interaction of FEA models are studied...
This paper investigates the influence of soil-structure interaction (SSI) on seismic responses of long-span space truss roof. First, a three-dimensional (3D) integral finite element (FE) model of a typical regular pyramids space truss structure consisting of space truss roof and support columns is developed. By applying FE method for near field soil and infinite element (IE) method for far field unbounded...
In the research of pile's lateral capacity, the effects of pile cap are usually neglected to make the problem simplified. Site tests demand a lot of time and money, a few data published can be obtained, even few the test of pile with cap, so it's hard to figure out the effect of cap on the lateral capacity of single pile. By using ABAQUS finite element software, three dimensional numerical simulation...
In order to study the feasibility on heat storage of underground concrete, this paper set up the mathematical model on thermal storage of underground concrete pile. And it adopted ANSYS finite element analysis software to numerically simulate the temperature field of underground concrete pile. The analysis showed that: during the period of heat storage, the distribution of temperature field which...
In Artificial Freezing Engineering(AFE), the distribution of freezing soil and its defects are important to engineering safety. Based on relative permittivity measured by vector network analyzer, electromagnetic models of artificial freezing walls were made. Then Ground Penetrating Radar (GPR) exploration of AFE was simulated by Time Domain Finite Element Method (TD-FEM) coupled with freezing temperature...
According to the basic theory of the saturated - non-saturated unsteady seepage field, the finite element model of Wutagou floodway is built by using the equivalent continuum model to analyze seepage characteristics and seepage failure conditions of the embankment and the surrounding soil. Cut-off wall, impervious blanket, bedding and deepening the drains and other seepage control measures are compared,...
Based on the concept of bounding surface, the bounding surface elastic-plasticity model was developed in the base of Mohr - Column yield function, and the dynamic constitutive model of the roadbed soil was established. The dynamic reflect of the soil was calculated with the model under the earthquake load, the calculation result was compared with the triaxial test result, it was found that the model...
Red-sandstone reinforced with hexagonal wire mesh is a new concept of composite reinforced soil. In order to study the mechanical properties of this composite reinforced soil, a series of laboratory triaxial compression tests on specimens reinforced with hexagonal wire mesh were carried out. 3D finite element method was introduced to simulate the triaxial tests. The macro stress-strain relation of...
Shafts are channels linking the surface part and underground part of mines or hydropower stations, while the numerical simulation of super-deep shafts under construction is scarcely done. In order to promote the construction technology of shafts, a three dimensional FE analysis with surveillance records verification is carried out to simulate the full process of construction to analyze the stress...
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