Suspension cable pipeline bridge forming wind cable line shape calculation method

A calculation method and pipeline bridge technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems such as the gap between the wind cable line shape and the parabola, not in the same plane, and the wind cable system is difficult to install, etc., to achieve improvement Calculation accuracy, effect of calculation accuracy improvement

Active Publication Date: 2020-12-04
BC P INC CHINA NAT PETROLEUM CORP +2
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the actual line shape of the wind cable segment located between the cables is a space catenary, not only is there a large gap between the line shape of the whole wind cable and the parabola, but also the wind cable and the wind cable are not in the same plane
Only using the spatial parabola theory to calculate the wind cable line shape and unstressed length will not only cause a large gap between the real line shape and the design line shape, but will even cause the problem that the wind cable system is difficult or even impossible to install

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Suspension cable pipeline bridge forming wind cable line shape calculation method
  • Suspension cable pipeline bridge forming wind cable line shape calculation method
  • Suspension cable pipeline bridge forming wind cable line shape calculation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] The present invention makes the following assumptions to the wind cable cable system of the space cable-shaped suspension bridge:

[0047] (1) The wind cables and wind stay cables are ideal flexible cables with small strains, and their materials satisfy Hooke's law, and the Poisson effect is ignored.

[0048] (2) When the bridge is completed, the wind cables only incline along the direction of the transverse bridge, and the inclination error of the wind cables in the longitudinal direction of the bridge during the construction process is ignored.

[0049] A method for calculating the wind c...

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

No PUM Login to view more

Abstract

The invention relates to a suspension cable pipeline bridge forming wind cable line shape calculation method, which belongs to the field of oil and gas pipeline crossing design, and comprises the steps of estimating wind cable starting end three-way component force according to a space parabola theory; taking the three-way component force at the starting end of the wind cable as an iterative initial value, and calculating the linear coordinate of the wind cable and the unstressed length of each cable section; correcting the three-way component force of the starting end of the wind cable by using an influence matrix method, and recalculating to obtain the linear coordinate of the wind cable and the unstressed length of each cable section. According to the method, the problems of inaccuratedesign, excessive assumptions and too large calculation errors in the prior art are solved, and the calculation accuracy of the line shape and the unstressed length of the finished bridge wind cable of the suspension cable pipeline bridge can be greatly improved by adopting the method to carry out design and calculation.

Description

technical field [0001] The invention relates to a method for calculating the wind cable line shape of a suspension pipeline bridge, which belongs to the field of spanning design of oil and gas pipelines. Background technique [0002] Pipeline suspension bridges are generally composed of main cables, suspension cables, wind cables, wind stay cables, stabilizing cables (conjugate cables), stiffening beams, cable towers and anchorages. Since its main purpose is to transport oil, natural gas or water, supports are usually set up on the bridge deck for erecting pipelines, and a simple maintenance path is set up to facilitate the construction and subsequent maintenance of pipelines. Pipeline suspension bridges have a small width-span ratio, low structural rigidity, and are sensitive to wind resistance. Generally, wind cable systems need to be installed. The mechanical characteristics of the pipeline suspension bridge are: the load acting on the bridge deck and the vertical load c...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F119/14
CPCG06F30/13G06F2119/14
Inventor 左雷彬胡川川杨威詹胜文刘思萌陈晓晖李国辉
Owner BC P INC CHINA NAT PETROLEUM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap