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Method for reinforcing foundation bolt of iron tower

An anchor bolt and anchor bolt technology, which is applied in the repair of infrastructure, construction, infrastructure engineering, etc., can solve the problems of anchor bolt iron tower structure damage, easy corrosion of anchor bolts, and increase of communication operation costs, etc. Achieve the effect of cost reduction, energy-saving communication operation cost, and short occupancy time

Active Publication Date: 2017-05-31
中国铁塔股份有限公司盐城市分公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the communication tower is erected outdoors, the anchor bolts at the bottom are corroded and weathered by the natural environment during long-term use, and are prone to rust. In addition, some towers do not maintain enough anchor bolts, which seriously threatens the operation safety of the tower.
The corrosion of anchor bolts will bring serious harm to the entire iron tower structure, which will not only affect the smooth communication, but also cause economic losses, and may even cause casualties
[0003] At present, most of the existing iron towers have a service life much shorter than their design service life due to safety issues, and usually need to be dismantled and rebuilt, which not only causes waste of resources, increases communication operation costs, but also affects normal communication overlays, causing inconvenience to the end user

Method used

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  • Method for reinforcing foundation bolt of iron tower
  • Method for reinforcing foundation bolt of iron tower
  • Method for reinforcing foundation bolt of iron tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as image 3 , 4 As shown in and 5, the specific steps for strengthening the anchor bolts of a three-pipe tower in a certain district of Yancheng City, Jiangsu Province are as follows:

[0042] Step 1. According to the tower diagram provided by the manufacturer, consider the load according to the three-story platform + two-story support, and calculate the internal force of the tower foot according to the current technical specifications: the design value of the uplift force is 981.049KN, and the design value of the downforce is 1042.23KN. According to the design value of the pull-up force of the tower foot 981.049KN, the original 6 anchor bolts of the tower foot are evenly distributed around the tower foot. In this embodiment, 12 reinforcement ribs 6 are evenly distributed in a circle, and the reinforcement rib 6 is determined according to the following formula diameter:

[0043]

[0044] In the formula, d is the theoretical diameter of the reinforcing rib, 12 ...

Embodiment 2

[0061] Such as Figure 6 and 7 As shown, the specific steps for strengthening the anchor bolts of a three-tube tower in a county in Yancheng City, Jiangsu Province are basically the same as those in the examples, and the details are as follows:

[0062] Step 1 is the same as in Example 1.

[0063] Step 2 is basically the same as Example 1, the difference is that in Example 2, a drainpipe 9 with a diameter of 30 mm is laid symmetrically on the outside of the bottom flange 3 to the original foundation concrete 1 to remove the accumulated water inside the tower column 2 .

[0064] Step 3 is the same as in Example 1.

[0065] Step 4 is the same as in Example 1.

[0066] Step 5. First, bind multiple circles of circular stirrups 7 along the upper and lower intervals of the reinforcing ribs 6. The diameter of the circular stirrups 7 is 8MM. The overlapping length of the circular stirrups 7 is greater than 50 times its own diameter, and the hook is 135°. And the straight length i...

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Abstract

The invention discloses a method for reinforcing a foundation bolt of an iron tower, belonging to the field of communication infrastructure maintenance. The method comprises the steps: determining the quantity and diameter of reinforcing steel bars; removing rust on the surface of an original foundation bolt, coating the surface with a protective coating, and padding a supporting block under a bottom flange; drilling steel bar embedding holes corresponding to the quantity of the reinforcing steel bars in the top surface of original foundation concrete, wherein the steel bar embedding holes are uniformly distributed along the outer circumferential direction of the original foundation bolt; cleaning the steel bar embedding holes and pouring an anchor adhesive into the steel bar embedding holes, and then inserting the reinforcing steel bars; chiseling the contact surface of the original foundation concrete, and then binding the reinforcing steel bars to form a steel bar cage; and setting up templates on the outer side of the steel bar cage and pouring concrete. Compared with the traditional demolition and reconstruction scheme, the method has the advantages that the cost is reduced by 90% or over, and the communication operation cost is greatly saved; the service needs of operators can be seamlessly connected, and no influence on communication exists.

Description

technical field [0001] The invention relates to a method for strengthening a communication tower, in particular to a method for strengthening anchor bolts of an iron tower, which belongs to the field of communication infrastructure maintenance. Background technique [0002] Since the communication tower is erected outdoors, the anchor bolts at the bottom are corroded and weathered by the natural environment during long-term use, and are prone to rust. In addition, some towers do not maintain enough anchor bolts, which seriously threatens the operation safety of the tower. The corrosion of anchor bolts will bring serious harm to the entire iron tower structure, which will not only affect the smooth communication, but also cause economic losses, and may even cause casualties. [0003] At present, most of the existing iron towers have a service life much shorter than their design service life due to safety issues, and usually need to be dismantled and rebuilt, which not only ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42E02D37/00
CPCE02D27/42E02D37/00
Inventor 沈文宋鑫梁茂华彭明瑞金一蔡卫军李磊祁小钰马翼飞
Owner 中国铁塔股份有限公司盐城市分公司
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