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Oval-section steel pipe pile foundation and checking and calculating method for horizontal bearing capacity of oval-section steel pipe pile foundation

A technology of horizontal bearing capacity and elliptical shape, which is applied in the test of basic structure, basic structure engineering, construction, etc., can solve problems such as economic waste, achieve the effect of reducing project cost, ensuring structural safety, and economical rationality

Inactive Publication Date: 2019-05-10
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the traditional design method, sufficient safety margin can be ensured for steel pipe piles, but it will cause a certain amount of economic waste, which cannot fully meet the principle of "economic rationality" in engineering design

Method used

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  • Oval-section steel pipe pile foundation and checking and calculating method for horizontal bearing capacity of oval-section steel pipe pile foundation
  • Oval-section steel pipe pile foundation and checking and calculating method for horizontal bearing capacity of oval-section steel pipe pile foundation
  • Oval-section steel pipe pile foundation and checking and calculating method for horizontal bearing capacity of oval-section steel pipe pile foundation

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Embodiment Construction

[0025] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 Shown is the wind speed rose diagram of the site, from which the maximum wind speed vector 1 and the second maximum wind speed vector 2 can be obtained. figure 2 based on figure 1 The determined elliptical cross-sectional shape of the steel pipe pile, the length of the major axis 3 of the ellipse is twice the value of the maximum wind speed vector 1, and the minor axis 4 of the ellipse is twice the value of the second maximum wind speed vector 2.

[0027] An elliptical section steel pipe pile foundation, the cross section of the steel pipe pile is elliptical, the wind load of the long axis 3 directions of the steel pipe pile elliptical cross section is the maximum wind load value, and the wind load of the short axis 4 directions is the maximum wind load value According to the wind speed ratio reduction, the wind speed...

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Abstract

The invention provides an oval-section steel pipe pile foundation. The cross section of a steel pipe pile is oval, the wind load in the long-axis direction of the oval cross section of the steel pipepile is a maximum wind load value, the wind load in the short-axis direction is a value obtained by reducing of the maximum wind load value according to a wind speed ratio, the wind speed ratio is theratio of a second maximum wind speed to a maximum wind speed, and the maximum wind speed and the second maximum wind speed are determined according to a wind speed rose diagram. The horizontal bearing capacities of the oval cross section of the steel pipe pile in the long-axis direction and the short-axis direction can be independently calculated. The checking and calculating method for the horizontal bearing capacity of the section of the steel pipe pile comprises the following steps: S1) calculating a maximum wind pressure; (S2) calculating a maximum horizontal force, (S3) calculating a second horizontal force, (S4) determining an elliptic equation, (S5) determining the shape of the steel pipe pile, (S6) checking and calculating the horizontal bearing capacities of the elliptic cross section in the long axis direction and the short axis direction, and (S7) determining the elliptic cross section size of the steel pipe pile. The invention has the advantages that the oval-section steelpipe pile foundation is safe, reliable, economic and reasonable.

Description

technical field [0001] The invention relates to the technical field of wind power generator foundation engineering design, in particular to a steel pipe pile foundation with an elliptical cross-section and a method for checking and calculating its horizontal bearing capacity. Background technique [0002] With the deteriorating global environment and the depletion of fossil energy, wind energy, as a clean and safe new energy, has been valued by governments and investment institutions of various countries. Compared with other new energy technologies, wind power technology is relatively mature, and has higher cost-effectiveness and resource efficiency. Therefore, in the past 30 years, the development of wind power has continuously exceeded its expected development speed and has maintained the fastest growth rate in the world. Fast energy status. [0003] With the rapid development of wind power investment and construction, the level of design and construction as the basis of ...

Claims

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Application Information

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IPC IPC(8): E02D27/44E02D27/12E02D33/00
Inventor 孙淼军单治钢王宽君
Owner POWERCHINA HUADONG ENG COPORATION LTD
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