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A device that can realize the visualization of the force state of the bolt

A technology of stress state and anchor rod, which is applied in the direction of basic structure test, construction, basic structure engineering, etc., can solve the problems of complicated installation process, personal safety threat, time-consuming manpower and time, and achieve low price, The effect of simple installation process and simple structural design

Active Publication Date: 2020-02-14
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used anchor dynamometer is composed of hand pump, jack, sensor and digital display instrument. Although this method can accurately measure the tensile force on the anchor, it has three obvious shortcomings: first, the installation process is complicated , the installation of the anchor dynamometer requires a special person to be responsible and operate in accordance with strict procedures, which takes a lot of manpower and time; second, the cost is high, and each anchor dynamometer is ten times that of an ordinary anchor The supporting installation instruments are dozens of times that of the anchor rods. Such a high price determines that it is impossible to install all the anchor rods in engineering applications, which limits the effective monitoring of all anchor rods in engineering applications.
The third is that the general bolt dynamometer requires specialized technical personnel to regularly observe and record data. Workers cannot intuitively and conveniently understand the stress state of the bolt at the construction site, which poses a certain threat to their personal safety.

Method used

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  • A device that can realize the visualization of the force state of the bolt
  • A device that can realize the visualization of the force state of the bolt
  • A device that can realize the visualization of the force state of the bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment discloses a device that can realize the visualization of the force state of the anchor rod, including two end fixing sleeves 12 sleeved at both ends of the anchor rod 9, and an instrument panel 1, a spring 4, an instrument panel bracket 5 and a high rigidity Cable I8.

[0036] see Image 6 , the instrument panel bracket 5 includes a connecting portion I 501 , a supporting portion 502 and a connecting portion II 503 . The connecting part I 501 and the supporting part 502 are plate-like structures. The connecting portion I 501 and the connecting portion II 503 are respectively connected to two side board surfaces of the supporting portion 502 .

[0037] see figure 2 with Figure 5 , the instrument panel 1 includes a semicircular metal sheet 101 , a pointer 103 and a gear 102 . The surface of the metal sheet 101 has five zones, which are marked as a, b, c, d and e in sequence. Among them, partition c corresponds to the design prestressed area of ​​bo...

Embodiment 2

[0047] This embodiment discloses a method for installing the visualization device for the stressed state of the bolt described in Embodiment 1, which includes the following steps:

[0048] 1) Set end fixing sleeves 12 at both ends of the anchor rod 9 .

[0049] 2) Weld the eyebolt of the high-rigidity cable I8 to the fixing protrusion 1201, and fix the high-rigidity cable I8 in sections along the anchor rod 9.

[0050] 3) A rock drill, a drill pipe and a drill bit matched with the anchor rod 9 are used to drill holes inside the surrounding rock.

[0051] 4) Clean the drill holes described in step 3). Anchor agent medicine 11 is put into the bottom end of borehole, and anchor rod 9 is stretched in the borehole.

[0052] 5) A backing plate 7 and a nut 6 are provided at the exposed end of the anchor rod 9 .

[0053] 6) Install instrument panel 1, instrument panel bracket 5 and spring 4. And hang chain 3 and high rigidity cable I 8.

[0054] 7) Tighten the nut 6 and apply it ...

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Abstract

The invention provides a device capable of realizing visualization of an anchor rod strained condition. The device includes end portion fixing sleeves arranged at both ends of an anchor rod in a sleeving mode, an instrument panel, a spring, an instrument panel bracket and a high stiffness cable I. The instrument panel includes a metal sheet, a pointer and a gear. The surface of the metal sheet isprovided with five partitions which are sequentially labeled as a, b, c, d, and e. A rotating shaft passes through the metal sheet, the gear and the pointer in sequence. A length of chain is arrangedon the gear in a meshed mode. The instrument panel is connected with the instrument panel bracket. According to the device capable of realizing the visualization of the anchor rod strained condition,the installation process is simple, and excessive manpower and time are not occupied; and the structural design is simple and the price is low, and all anchor rods in the engineering application can be effectively monitored.

Description

technical field [0001] The invention relates to the technical category of anchor rod working state monitoring in large-scale slope and foundation pit dynamic special projects, in particular to a design method capable of realizing the visualization of the stress state of anchor rods. Background technique [0002] The purpose of monitoring is to understand the actual stress state of the bolt, judge the rationality of the design prestress, initial anchor force and pull-out force, and specifically reflect the monitoring of the working load of the bolt. Anchor rods and anchor cables are important tools for strengthening slopes and foundation pits, and their stress status is of great significance for measuring their working stability. The anchor dynamometer is an instrument for measuring the force change of the anchor, and it can be used for all kinds of anchors that are common in engineering. By monitoring the working condition of the bolt, in order to monitor the quality of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74E02D33/00
CPCE02D5/74E02D33/00
Inventor 仉文岗巫崇智章润红周东周小婉刘汉龙
Owner CHONGQING UNIV