CN-115470650-B - Automatic design method and device for wind farm fan foundation

CN115470650BCN 115470650 BCN115470650 BCN 115470650BCN-115470650-B

Abstract

The invention discloses an automatic design method and device for a wind power plant fan foundation, wherein for a shallow buried foundation, and calculating a fan foundation design result by adopting a mode of repeated iterative computation, and finally calculating the fan foundation design result and the engineering quantity. For the deep foundation, adopting automatic matching to preset foundation engineering quantity, conforming to the design result according to the load range, matching the pile foundation design result according to the geological condition, and finally calculating the fan foundation design result and engineering quantity. The method has strong operability, improves the degree of automatic design of the wind power plant fan foundation, greatly reduces the flow of the fan foundation design under the condition of meeting the requirement of reliability of the bearing capacity of the fan foundation, has strong engineering applicability, is simultaneously suitable for automatic design of the fan foundation in domestic and foreign wind power industries, and fills the blank in the field of automatic design of the wind power plant fan foundation and engineering quantity calculation.

Inventors

YANG KUIBIN
WANG QIJUN
LIU PING

Assignees

东方电气风电股份有限公司

Dates

Publication Date: 20260512
Application Date: 20220929

Claims (7)

1. An automatic design method for a wind farm fan foundation is characterized by comprising the following steps: S1, determining a basic form of a target fan foundation according to site conditions; S2, when the foundation form is a shallow foundation, determining a radius value R of a target fan foundation, obtaining a foundation design result according to the radius value R, and matching a foundation standard engineering quantity list corresponding to a database; S4, obtaining a basic engineering quantity according to the basic standard engineering quantity list, and rechecking the basic engineering quantity to obtain a final engineering quantity list; s5, when the foundation form is a deep foundation, matching a corresponding pile foundation standard engineering quantity list according to foundation information of a target fan foundation; S6, obtaining pile foundation engineering quantity according to the pile foundation standard engineering quantity list, and rechecking the pile foundation engineering quantity to obtain a final engineering quantity list; the step S2 specifically includes: When the foundation is in a shallow foundation form, according to a bending moment load standard value M k under the normal operation condition of the foundation top and a vertical force standard value under the normal operation condition of the foundation top Iterating out a radius value R of a target fan foundation; According to the radius value R, a basic design result is obtained, and a basic standard engineering quantity list corresponding to the database is matched; the iterative target fan foundation radius value R specifically comprises: Acquiring an initial radius value, acquiring the height of a basic prismatic table according to the radius value, and acquiring the eccentricity corresponding to the current radius value by utilizing the height of the basic prismatic table; Judging whether the eccentricity does not exceed a preset threshold value, if not, iteratively updating the radius value until the eccentricity does not exceed the preset threshold value; the expression of the eccentricity is: ; Wherein, the Is the eccentricity; adding a soil covering heavy load standard value kN to the foundation weight; the vertical force acting on the top of the foundation is standard value kN; m3 is the volume of the basic concrete; taking the dead weight of the foundation concrete as the kN; Covering the soil volume on the basis, and m 3 ; the dead weight of soil is covered on the basis, and kN is calculated; taking the absolute value of the basic land height after formula calculation; Is the standard value of the bending moment load acting on the top of the foundation.
2. The method for automatically designing a wind farm fan foundation according to claim 1, wherein in the step S1, the site conditions include topography, address and hydrologic conditions.
3. The method for automatically designing a wind farm fan foundation according to claim 1, wherein the expression for iteratively updating the radius value is: R after updating =R Before updating +0.25。
4. The method for automatically designing a wind farm fan foundation according to claim 1, wherein in the step S5, the foundation information includes a foundation type, a foundation diameter, a single pile length, and a number of piles.
5. The method for automatically designing a wind farm fan foundation according to claim 1, wherein in the step S4, the foundation engineering quantity is rechecked to obtain a final engineering quantity list, and specifically comprises judging whether to increase the foundation treatment engineering quantity according to the geological condition of the wind farm, and rechecking foundation treatment to obtain a final engineering quantity list.
6. The method for automatically designing a wind farm fan foundation according to claim 1, wherein in the step S6, the pile foundation engineering quantity is rechecked to obtain a final engineering quantity list, and specifically comprises rechecking the pile foundation engineering quantity according to a load range, and matching the pile foundation engineering quantity according to geological conditions to obtain the final engineering quantity list.
7. An automatic design device for a wind farm fan foundation, which is characterized in that the automatic design method for the wind farm fan foundation according to any one of claims 1-6 is adopted, and the automatic design device for the wind farm fan foundation comprises: The basic form determining module is used for determining a basic form of the target fan foundation according to the site conditions; The basic standard engineering quantity list determining module is used for determining a radius value R of a target fan foundation when the basic form is a shallow foundation, obtaining a basic design result according to the radius value R and matching a basic standard engineering quantity list corresponding to the database; the basic final engineering quantity list determining module is used for obtaining basic engineering quantity according to the basic standard engineering quantity list, and rechecking the basic engineering quantity to obtain a final engineering quantity list; The pile foundation standard engineering quantity list determining module is used for matching a corresponding pile foundation standard engineering quantity list according to the basic information of the target fan foundation when the foundation form is a deep foundation; And the pile foundation final engineering quantity list determining module is used for obtaining pile foundation engineering quantity according to the pile foundation standard engineering quantity list, and rechecking the pile foundation engineering quantity to obtain a final engineering quantity list.

Description

Automatic design method and device for wind farm fan foundation Technical Field The invention relates to the technical field of wind power, in particular to an automatic design method and device for a wind power plant fan foundation. Background With the promotion of wind power flat-price surfing and the continuous exertion of wind power large-base projects, the wind power large-base projects started in 2021 are considered, wherein the planned capacity of Gansu-base reaches 1395 kilowatts, and the conventional large-base projects also reach 200-300 kilowatts. The traditional fan foundation design flow of the design institute is that load data are taken from wind power complete machine factories, and then foundation forms and engineering quantities are manually calculated one by one. The large-scale base projects are different in wind conditions, the machine types are selected and diversified, the unit load and the foundation are checked one by one manually, the optimal scheme of the full-field LCOE cannot be provided, and the design period is long. In the age of low-price Internet surfing, the cost pressure of each link of wind farm development is huge, and the traditional manual rechecking foundation mode is still adopted by combining the characteristics of shortness and rapidness of the wind power industry, so that the wind farm development is not suitable for market demands. Disclosure of Invention The invention mainly aims to provide an automatic design method and device for a wind power plant fan foundation, aims to solve the pain points developed in the industry, overcomes the defects of the existing design mode, provides a method for automatically designing the wind power plant fan foundation and calculating the engineering quantity, realizes multi-scheme rapid iteration, and recommends a foundation scheme with optimal engineering quantity based on an LCOE (liquid Crystal on air) optimal principle. For engineering technicians of wind farm design, a matching technical scheme can be rapidly designed, the working efficiency is improved, and the method has strong practicability, and fills the blank in the field of automatic design of fan foundations and engineering quantity calculation. In order to achieve the above purpose, the invention provides an automatic design method for a wind farm fan foundation, which comprises the following steps: S1, determining a basic form of a target fan foundation according to site conditions; S2, when the foundation form is a shallow foundation, determining a radius value R of a target fan foundation, obtaining a foundation design result according to the radius value R, and matching a foundation standard engineering quantity list corresponding to a database; S4, obtaining a basic engineering quantity according to the basic standard engineering quantity list, and rechecking the basic engineering quantity to obtain a final engineering quantity list; s5, when the foundation form is a deep foundation, matching a corresponding pile foundation standard engineering quantity list according to foundation information of a target fan foundation; S6, obtaining pile foundation engineering quantity according to the pile foundation standard engineering quantity list, and rechecking the pile foundation engineering quantity to obtain a final engineering quantity list. Optionally, in the step S1, the site conditions comprise terrain, address and hydrologic conditions. Optionally, the step S2 specifically includes: When the foundation is in a shallow foundation form, according to a bending moment load standard value M k under the normal operation condition of the foundation top and a vertical force standard value under the normal operation condition of the foundation top Iterating out a radius value R of a target fan foundation; and obtaining a basic design result according to the radius value R, and matching a basic standard engineering quantity list corresponding to the database. Optionally, the iterating out the radius value R of the target fan foundation specifically includes: Acquiring an initial radius value, acquiring the height of a basic prismatic table according to the radius value, and acquiring the eccentricity corresponding to the current radius value by utilizing the height of the basic prismatic table; and judging whether the eccentricity does not exceed a preset threshold value, and if not, iteratively updating the radius value until the eccentricity does not exceed the preset threshold value. Optionally, the expression of the eccentricity is: ; Wherein, the Is the eccentricity; adding a soil covering heavy load standard value kN to the foundation weight; the vertical force acting on the top of the foundation is standard value kN; m3 is the volume of the basic concrete; taking the dead weight of the foundation concrete as the kN; Covering the soil volume on the basis, and m 3; the dead weight of soil is covered on the basis, and kN is calculated; taking the absolute v