Simplified calculation method of wind vibration coefficient based on effective load method for conventional single tower with cantilevered crossarm
A wind-induced vibration coefficient, conventional technology, applied in the field of simplified calculation of wind-induced vibration coefficient, can solve the problem of not considering the influence of cross-arm gradient wind height on CFST
Active Publication Date: 2022-05-20
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the design wind loads of transmission towers in these codes and standards do not consider the influence of crossarms, gradient wind heights, and steel tube concrete
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0057] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0058] from figure 1 It can be seen that the conventional single tower is divided into three parts: the diaphragm, the cross arm and the remaining tower body, as shown in 1. In the figure b 1 to follow up; b 2 is the outstretched length of a single leg of the cross arm; H is the total height; H n Hu Gao; H g is the gradient wind height; H′ is the concrete irrigation height; ΔH 1 is the thickness of the crossarm near the tower end; ΔH 2 Center-to-center distance between adjacent cross-arms; M 1 (x 1 ,z 1 ) and M 2 (x 2 ,z 2 ) are any two points in the space. The distribution laws of the mass of the diaphragm, the cross arm, and the remaining tower body and the windshield area along the height are different, so they need to be treated differently in the calculation process.
[0059] In thi...
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 PUM
Login to View More Abstract
The invention discloses a simplified calculation method for the wind vibration coefficient of a conventional single tower with a cantilevered crossarm based on the effective load method, establishes a calculation model for the design wind load of a conventional single tower, and obtains the design of the conventional single tower by calculating the wind vibration coefficient wind load. The equivalent background wind load is calculated using the statistical influence line method, and the intermediate variable γ is determined B The fitting formula of , deduced the correction coefficient θ of the wind vibration coefficient considering the influence of shape change ηB . by adopting B , θ ηB and related correction coefficients, the wind-induced vibration coefficients of a conventional single tower with cantilevered crossarms are derived. In the actual design, the wind load of a conventional single tower can be obtained through the calculation results of the wind vibration coefficient and the calculation formula related to the wind vibration coefficient and the wind load. The calculation steps are simple, and the influence of the respective contributions of the diaphragm, the cross arm and the concrete filled steel tube on the wind vibration coefficient of the transmission tower is analyzed.
Description
technical field [0001] The invention relates to the technical field of conventional single tower design, in particular to a simplified calculation method for wind vibration coefficient of a conventional single tower with cantilevered cross arms based on effective load method. Background technique [0002] The Chinese code follows the wind-resistant design method of the Soviet Union. This method uses the mode decomposition method to calculate the equivalent background wind load. The displacement error of the top of the tower is not large. Compared with the inertial force method, since the effective load method uses a quasi-static method to calculate the background wind load, the determined background wind load is an accurate theoretical solution. When the effective load method is used for calculation, the weight coefficients of the background wind load and the resonant wind load are determined according to the response components, so that the calculated response is equivalen...
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 Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/23G06Q50/08G06F119/14
CPCG06F30/13G06F30/23G06Q50/08G06F2119/14Y02E60/00
Inventor 赵爽晏致涛
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY