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A foundation bolt uplift bearing capacity measuring and calculating method

A technology of anti-pull bearing capacity and ground bolts, applied in calculation, special data processing applications, photovoltaic power generation, etc., can solve the problems of lack of theoretical determination methods, low attention, and insufficient safety reserves, etc., to achieve a wide range of applications and methods Simple steps and strong process effects

Active Publication Date: 2019-05-10
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the design of solar photovoltaic support structures has often paid little attention to the bearing capacity of ground bolts, especially the pull-out bearing capacity, which is mostly determined based on experience and lacks corresponding theoretical determination methods, resulting in insufficient safety reserves or bearing capacity. Excessively high, resulting in waste of materials, etc.

Method used

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  • A foundation bolt uplift bearing capacity measuring and calculating method
  • A foundation bolt uplift bearing capacity measuring and calculating method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The method for measuring and calculating the pull-out bearing capacity of ground bolts in this embodiment is used in the construction of installing solar photovoltaic supports in cohesive soil.

[0033] A certain foundation soil in this embodiment is clay weathered residual cohesive soil within a depth of 0-3.6m, which is a cohesive soil foundation. Ground bolts are laid in the foundation as the foundation of the solar photovoltaic support. After weighing the mass of the ground bolts, it is multiplied by gravity Acceleration, get the gravity G of the ground bolt 1 is 0.1kN, the outer diameter d is 96mm, and the depth H of the soil is 1.2m; the density of the foundation soil measured by the ring knife method is 1.78g / cm 3 , multiplied by the acceleration of gravity, the gravity γ is 17.4kN / m 3 ; The internal friction angle of the soil was measured by the indoor direct shear test is 30°; the undrained shear strength c of the foundation soil is measured by the field cro...

Embodiment 2

[0035] A certain foundation soil is aeolian sandy soil within a depth of 0-3.1m, which is a non-cohesive soil foundation. Ground bolts are laid in the foundation as the foundation of the solar photovoltaic support. The mass is weighed through the ground bolts, and then multiplied by the acceleration of gravity to obtain the Gravity G of the ground bolt 1 is 0.1kN, the outer diameter d is 96mm, and the depth H of the soil is 1.2m; the density of the foundation soil measured by the ring knife method is 1.71g / cm 3 , multiplied by the acceleration of gravity, the gravity γ is 16.8kN / m 3 ; The internal friction angle of the soil was measured by the indoor direct shear test is 27°, determine q s2 is 14.1kPa; further calculate the ultimate pull-out capacity T of ground bolts u2 is 3.16kN, the design pull-out capacity R of ground bolts a2 is 1.80kN.

[0036] Through the ultimate pull-out bearing capacity and design pull-out bearing capacity of the above-mentioned ground bolts, t...

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Abstract

The invention discloses a method for measuring and calculating uplift bearing capacity of a foundation bolt. The method is used for measuring and calculating the ultimate uplift bearing capacity and the designed uplift bearing capacity of the foundation bolt for connecting a solar photovoltaic support and a foundation soil body. The method is simple in step, high in process flow and convenient touse, is more accurate and effective compared with a traditional method for determining the uplift bearing capacity of the foundation bolt according to experience, facilitates construction safety of the solar photovoltaic support in engineering building construction, and effectively avoids waste of connecting materials.

Description

technical field [0001] The invention relates to a method for measuring and calculating the pull-out bearing capacity of ground bolts. Background technique [0002] Ground bolts, that is, anchor bolts, are used to securely connect the mechanical components and the soil when the mechanical components are installed on the foundation soil. Ground bolts are more commonly used structural components in engineering. They play a basic role in solar photovoltaic supports and have the advantages of fast construction speed and low cost. When the photovoltaic support is subjected to upward wind force, the ground bolts bear the upward pull-out force. When the pull-out force exceeds the pull-out bearing capacity of the ground bolt itself, the ground bolt will be pulled out and damaged. For a long time, the design of solar photovoltaic support structures has often paid little attention to the bearing capacity of ground bolts, especially the pull-out bearing capacity, which is mostly determ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E10/50Y02B10/10
Inventor 常方强梁康康
Owner HUAQIAO UNIVERSITY
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