Method of testing wind load of 1000kV ultra-high voltage substation framework through wind tunnel experiment

A technology of wind tunnel test and substation structure, which is applied in the field of civil engineering, can solve the problems of poor calculation accuracy of wind load, etc., and achieve the effect of comprehensive and detailed steps, simple process and accurate wind tunnel test results
CN110207945AInactive Publication Date: 2019-09-06SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
4 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
Publication Date
2019-09-06
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Disclosed is a method of testing a wind load of a 1000kV ultra-high voltage substation framework through a wind tunnel experiment, which relates to a method of testing a wind load and aims to solve the technical problem of low accuracy in calculating the wind load of the 1000kV ultra-high substation framework. The method comprises: preparing a model satisfying a blocking ratio of a wind tunnel, and comparing a cross section of an average wind speed measured at a section of the wind tunnel experiment and a cross section of a turbulivity respectively with code values in Load Code for the Designof Building Structures to determine accuracy of a simulated wind field; checking accuracy of a high-frequency force measuring balance through absolve values of a base shear force of the model in directions X and Y at 0 or 90 DEG of the high-frequency force measuring balance, then performing the wind tunnel experiment under each wind direction angle, representing the measured base shear force of the model and bending moment with dimensionless coefficients and obtaining a pneumatic force coefficient and a shape coefficient so as to calculate the value of the wind load. Using a section model, themethod can determine distribution ratio of the wind load of the overall framework and improve calculation accuracy, such that it can be applied in the design of a lattice form high-rise tower structure.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a test and calculation method for wind load, belonging to the field of civil engineering. Background technique

[0002] In recent years, with the improvement of residents' living standards and the continuous increase in the demand for power resources in industrial production, the power transmission volume has continued to increase, and the substation structure in the power transmission system has become higher and higher, and its safety and reliability have attracted widespread attention from the society. Compared with the traditional building structure, in addition to overcoming the dynamic characteristics of the wind load itself, the substation structure also needs to consider the complex force generated by the interaction between the wind and the structure. Wind vortex shedding, turbulence, and torsion along the height direction may also produce significant vibration, which increases the complexity of wind load distribution ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More