A Numerical Simulation Method of Particle Flow for Double-row Pile Foundation Pit Support

A foundation pit support and numerical simulation technology, applied in the field of numerical simulation, can solve problems such as rare application research

Active Publication Date: 2022-07-05
JIANGSU ZHONGSHE GRP
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  • Application Information

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Problems solved by technology

However, its application research in the field of double-row pile foundation pit support is still rare

Method used

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  • A Numerical Simulation Method of Particle Flow for Double-row Pile Foundation Pit Support
  • A Numerical Simulation Method of Particle Flow for Double-row Pile Foundation Pit Support
  • A Numerical Simulation Method of Particle Flow for Double-row Pile Foundation Pit Support

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Embodiment Construction

[0062] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0063] The particles are fitted into a double-row pile structure, and then the parameters of the particles in different soil layers are calibrated according to the stress-strain curve obtained from the geotechnical laboratory test to simulate the soil layer of the foundation pit. refer to figure 1 As shown, it is a schematic diagram of a numerical simulation method for supporting particle flow in a double-row pile foundation pit provided by an embodiment of the present invention.

[0064] In this embodiment, the method for numerical simulation of particle flow in double-row pile foundation pit support includes:

[0065] S1. Clump particles with different diameters are used to fit and simulate a unit structural unit, the structural units are spliced ​​into the shape of a double-row pile structure, and a parallel...

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Abstract

The invention relates to the technical field of numerical simulation, and discloses a numerical simulation method for supporting particle flow in a double-row pile foundation pit, comprising: using Clump particles of different diameters to fit and simulate a unit structural unit, Splicing into the shape of a double-row pile structure; use finite element software to establish a double-row pile structure of the same shape, perform equal stress analysis on the double-row pile structure model, and calculate the particle flow double-row pile value according to the displacement and deformation of the finite element double-row pile. The meso-parameter calibration of the structure; the soil layer particles of the foundation pit are generated based on the particle flow, and the micro-parameters of each soil layer of the foundation pit are calibrated according to the macroscopic stress-strain mechanics curve obtained by the indoor triaxial test; the layered filling method is used to carry out the foundation pit The initial soil layer is generated, and each soil layer of the particle flow foundation pit is given the meso-parameters calibrated by different soil layers; the overall particle flow double-row pile foundation pit support model is established. The invention realizes the numerical simulation of double row pile support.

Description

technical field [0001] The invention relates to a numerical simulation method based on a particle flow method, in particular to a particle flow numerical method for double-row pile support. Background technique [0002] With the rapid development of cities, problems such as traffic congestion, lack of land resources, and deterioration of the ecological environment have become increasingly prominent. In order to improve the livability, resilience, and inclusiveness of cities, people have gradually increased the development of underground structures, such as subway stations, highways, etc. Tunnels, pedestrian tunnels, etc. often involve deep foundation pit works. In the increasingly narrow urban space environment, the excavation of foundation pits often affects the deformation of surrounding existing buildings, tunnels and pipelines. Therefore, the form of double-row pile enclosure structure is more and more favored by engineering designers. [0003] At present, domestic and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/13G06F111/10G06F119/14
CPCG06F30/23G06F30/13G06F2119/14G06F2111/10
Inventor 张会来夏至施霄飞蒋皓
Owner JIANGSU ZHONGSHE GRP
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