Blocking tower for construction of power transmission line crossing high-speed railway and construction method

A technology for power transmission lines and high-speed railways, applied to towers, building types, buildings, etc., can solve problems that threaten the life safety of workers and passengers, large displacement of towers, damage of towers, etc., to achieve efficient construction, small construction impact, and site Effects with low space requirements

Active Publication Date: 2021-09-03
国网江苏省电力有限公司建设分公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in typhoon-prone areas, strong wind loads will have a serious impact on the construction of transmission line erection, which will not only cause a large displacement of the tower, but even cause damage to the tower, threatening the lives of workers and passengers, and bringing huge losses. economic loss and serious social impact

Method used

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  • Blocking tower for construction of power transmission line crossing high-speed railway and construction method
  • Blocking tower for construction of power transmission line crossing high-speed railway and construction method
  • Blocking tower for construction of power transmission line crossing high-speed railway and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Such as figure 1 As shown, this embodiment is suitable for areas with certain loads and limited construction space. This kind of small-space power transmission line spans the network-closing tower of the high-speed railway construction, including a lattice connection frame 1, a pair of towers 2 and four stay cables 3, the four stay cables are radially arranged and anchored outside the tower surface . Two stay cables 3 are symmetrically distributed on the outside of each tower and anchored to the ground, so as to ensure the symmetry of the system in space.

[0051] Such as figure 2 , image 3 As shown, the lattice connecting frame 1 includes a prefabricated hydraulic damper module 11 and a prefabricated cuboid truss module 12 . Among them, the prefabricated hydraulic damper module 11 includes four identical hydraulic dampers 111, each hydraulic damper has screw holes at both ends, and the dampers are connected with the square steel pipe 113 by a strut 112, and the c...

Embodiment 2

[0061] This embodiment is suitable for areas with good site natural factors and small loads. The difference between this embodiment and the preferred embodiment 1 is that the lattice connecting frames in the system are replaced by prestressed connecting cables.

[0062] The prestressed connecting cable is a prefabricated parallel steel cable bundle with eye rings, pulleys or hooks embedded at both ends. The two ends of the prestressed connecting cable are connected to the two towers, which can withstand certain dynamic loads and static loads, and have certain corrosion resistance. The prestressed connecting cables and the cables work together to maintain the overall stability of the system.

Embodiment 3

[0064] This embodiment provides a construction method for the power transmission line described in Embodiment 1 across the high-speed railway construction network sealing tower, the method mainly includes the following steps:

[0065] Determine the length of the lattice connection frame, the number of prefabricated hydraulic damper modules and the height of the tower according to the site space conditions and natural factors;

[0066] Select the size of the round steel pipe and the square steel pipe, calculate the mass of the lattice connection frame and the tower frame connected with the insulation net, and determine the pulling force of the cable;

[0067] According to the pulling force of the cable, determine the cross-sectional diameter, length, material of the cable, the specification of the nonlinear spring at the end of the cable and the anchoring position of the end of the cable;

[0068] Assemble the prefabricated truss modules into a tower, and assemble the prefabric...

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Abstract

The invention discloses a blocking tower for construction of a power transmission line crossing a high-speed railway and a construction method. The blocking tower comprises a pair of towers, a lattice type connecting frame and an inhaul cable, wherein each tower comprises a tower supporting column and a cross arm perpendicular to the tower supporting column; a net pulling connecting piece is arranged in each cross arm and used for being connected with a net pulling rope; each tower supporting column and each cross arm are formed by detachably assembling prefabricated truss modules; the lattice type connecting frame is connected and installed between two towers, and the lattice type connecting frame comprises a prefabricated truss module and a prefabricated damper module which are connected together in series; and the inhaul cable comprises an inhaul cable line, a turn buckle and a nonlinear spring, the initial end of the inhaul cable line is connected into the tower supporting columns, and the tail end of the inhaul cable line is connected with the nonlinear spring and anchored to the ground. The blocking tower is simple in structure, easy to manufacture, convenient to transport due to prefabricated assembly, quick to mount, easy to dismount, capable of being recycled and saving cost, efficient in construction, capable of shortening the construction period, high in safety and high in economy.

Description

technical field [0001] The invention belongs to the technical field of power transmission line construction, and in particular relates to a network sealing tower and a construction method for the construction of a power transmission line spanning a high-speed railway. Background technique [0002] Transmission lines are the key nodes in the power grid, and high-speed railways are the main arteries running through all aspects of our country. When the transmission line crosses the high-speed railway construction, it cannot affect the normal operation of the high-speed railway. Therefore, a tower with a large height and span is usually used to build a transmission line after crossing the high-speed railway, so as not to affect the passage of the high-speed railway below and the power transmission of the high-speed railway circuit system. After the construction of the transmission line is completed, the tower still needs to be removed to restore the site to its pre-construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/10E04H12/18E04H12/20E04H12/22E04B1/98E04G21/14
CPCE04H12/10E04H12/20E04H12/2215E04B1/98E04G21/14
Inventor 谢洪平黄士君刘亮黄涛曹枚根朱磊刘寅莹王诚禹肖楠何畅
Owner 国网江苏省电力有限公司建设分公司
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