CN105317452A - Resistance-increasing yielding large-deformation anchor rod and construction method thereof - Google Patents
Resistance-increasing yielding large-deformation anchor rod and construction method thereof Download PDFInfo
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- CN105317452A CN105317452A CN201510889147.5A CN201510889147A CN105317452A CN 105317452 A CN105317452 A CN 105317452A CN 201510889147 A CN201510889147 A CN 201510889147A CN 105317452 A CN105317452 A CN 105317452A
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- anchor rod
- resistance
- deformation
- rod
- large deformation
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Abstract
The invention discloses a resistance-increasing yielding large-deformation anchor rod and a construction method thereof. The resistance-increasing yielding large-deformation anchor rod is composed of deformation springs, anchoring rods, fixing balls and connecting sleeve barrels; high-strength extension springs are adopted as the deformation springs, solid metal rod bodies are adopted as the anchoring rods, hollow elliptical metal ball bodies are adopted as the fixing balls, and each fixing ball is provided with connectors with outer threads; the deformation springs and the corresponding anchoring rod are sequentially connected between two corresponding fixing balls through the corresponding connecting sleeve barrels with inner threads to form a structure unit of the resistance-increasing yielding large-deformation anchor rod; a plurality of the structure units are assembled according to the anchoring depth or length, and the end of the outermost structure unit is further connected with one anchoring rod segment for allowing a tray and a nut of the anchor rod to be installed, and then the resistance-increasing yielding large-deformation anchor rod is formed. The resistance-increasing yielding large-deformation anchor rod can be tensioned to deform when surrounding rock generates large deformation, the resistance is steadily increased simultaneously, and therefore the stability of the surrounding rock is effectively kept.
Description
Technical field
The present invention relates to the anchor pole of construction of tunnel supporting, particularly relate to a kind of have increase resistance and allow the large deformation anchor rod of compression functions.
Background technology
Bolt-spary supports is the important supporting means in construction of tunnel, and anchor pole is important support material.In modern tunnel construction, the geo-logical terrain condition of Tunnel Passing becomes increasingly complex, and country rock also usually shows the feature of large deformation, and the stability problem of country rock more and more highlights.But the deformability of existing anchor pole is poor, can not the feature of suitable for surrounding rock large deformation, when country rock generation moderate finite deformation exceedes the limit of power that anchor pole can bear, easily cause Bolt System to lose efficacy, wall rock destabilization, tunnel structure destroys.
In order to the feature of suitable for surrounding rock large deformation, overcome the shortcoming of existing conventional anchor deformability difference, occurred large deformation anchor rod.As patent 201110061360.9 provides a kind of friction sleeve cartridge type large deformation anchor rod, but it adopts mechanical friction mode to realize bolt deformation elongation, and structure is comparatively complicated; 201210139092.2 provide a kind of novel high-strength constant resistance and large deformation anchor rod, execute man-hour requirement and carry out reaming, construction is inconvenient.
Summary of the invention
The object of the present invention is to provide and a kind of increase resistance and allow pressure large deformation anchor rod, with the feature of suitable for surrounding rock large deformation.
To achieve these goals, the present invention is a kind of increases resistance and allows pressure being configured to of large deformation anchor rod: be made up of distortion spring, anchor rod, fixing ball and branch sleeve; It is characterized in that, described distortion spring adopts high-strength extension spring; Anchor rod is the solid metal body of rod; Fixing ball is the oval metal ball body of hollow, and they are all with externally threaded connector; By processing female branch sleeve, be linked in sequence distortion spring, anchor rod between two fixing balls, forms one and increase the element of construction hindering and allow and press large deformation anchor rod; Assemble several said units according to anchorage depth or length, and connect one section of anchor rod again in outermost termination, for pallet and the nut of skyhook, formed and increase resistance and allow pressure large deformation anchor rod.
For ensureing the anchoring effect of fixing ball, described fixing bulb diameter is more smaller than bore diameter.
Increasing resistance makes the operating principle of pressure large deformation anchor rod as follows: this anchor pole adopts total length bonding, when country rock deforms generation crack, anchor rod and distortion spring be supporting inefficacy because of the generation in crack, pressure from surrounding rock increases gradually, when pressure from surrounding rock acquires a certain degree, the distortion spring at anchor rod two ends produces stretcher strain under its effect, and pressure from surrounding rock is discharged; Distortion spring produces pulling force after the stretch, and be out of shape larger, the pulling force of generation is larger, stronger to the control ability of country rock; Because the fixing ball at distortion spring two ends is still fixed in Anchor Agent, still can play support action, make anchor pole keep support system complete while generation local distortion allows pressure, maintain adjoining rock stability better.In a word, anchor pole by camber of spring allow pressure simultaneously resistance increase, allow country rock that a certain amount of distortion occurs in anti-process to reach stable allowing, anchor pole also can not lose efficacy because crossing top load.
The present invention's one increases resistance allows pressure large deformation anchor rod advantage be:
(1) adopt distortion spring by surrouding rock deformation energy absorption, can be translated into the resistance to country rock, so surrouding rock deformation is larger, the support capacity of anchor pole to country rock is stronger;
(2) this anchor pole method of attachment is simple, easy to assembly, can regulate rock-bolt length according to anchorage depth;
(3) the method easy construction, quick, construction equipment, equipment need not be changed in construction midway.
Accompanying drawing explanation
Fig. 1 is that the present invention's one increases resistance and allows pressure large deformation anchor rod schematic diagram.
Marginal data: 1-distortion spring; 2-anchor rod; 3-fixes ball; 4-branch sleeve.
Detailed description of the invention
One as shown in Figure 1 increases resistance allows pressure large deformation anchor rod be made up of distortion spring 1, anchor rod 2, fixing ball 3 and branch sleeve 4 etc.; Described distortion spring 1 adopts high-strength extension spring; Anchor rod 2 is the solid metal body of rod; Fixing ball 4 is the oval metal ball body of hollow, and they are all with externally threaded connector; By processing female branch sleeve 4, be linked in sequence distortion spring 1, anchor rod 2 between two fixing balls 3, forms one and increase the element of construction hindering and allow and press large deformation anchor rod; Assemble several said units according to anchorage depth or length, and connect one section of anchor rod 2 again in outermost termination, for pallet and the nut of skyhook, formed and increase resistance and allow pressure large deformation anchor rod.
During construction, first distortion spring 1, anchor rod 2, fixing ball 3 are assembled by branch sleeve 4, then construction drill according to actual needs, subsequently bored grouting is filled, after slip casting completes, anchor pole is inserted boring, tray nut, namely anchor pole installs.
Claims (2)
1. increase resistance and allow a pressure large deformation anchor rod, it is characterized in that, it is made up of distortion spring, anchor rod, fixing ball and branch sleeve; Distortion spring adopts high-strength extension spring, and anchor rod is the solid metal body of rod, and fixing ball is the oval metal ball body of hollow, and they are all with externally threaded connector; By processing female branch sleeve, be linked in sequence distortion spring, anchor rod between two fixing balls, forms one and increase the element of construction hindering and allow and press large deformation anchor rod; Assemble several said units according to anchorage depth or length, and connect one section of anchor rod again in outermost termination, for pallet and the nut of skyhook, formed and increase resistance and allow pressure large deformation anchor rod.
2. one kind increases the construction method hindering and allow and press large deformation anchor rod as claimed in claim 1, it is characterized in that, during construction, first distortion spring, anchor rod, fixing ball are assembled by branch sleeve, then construction drill as requested, is filled bored grouting subsequently, after slip casting completes, anchor pole is inserted boring, tray nut, namely anchor pole installs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889147.5A CN105317452A (en) | 2015-12-07 | 2015-12-07 | Resistance-increasing yielding large-deformation anchor rod and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889147.5A CN105317452A (en) | 2015-12-07 | 2015-12-07 | Resistance-increasing yielding large-deformation anchor rod and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105317452A true CN105317452A (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510889147.5A Pending CN105317452A (en) | 2015-12-07 | 2015-12-07 | Resistance-increasing yielding large-deformation anchor rod and construction method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN105317452A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442955A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive friction formula anchor pole |
| CN109723480A (en) * | 2018-12-27 | 2019-05-07 | 山东科技大学 | Tension and compression coupling for country rock large deformation, which allows, presses energy-absorbing grouted anchor bar and working method |
| CN110593929A (en) * | 2019-10-28 | 2019-12-20 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Secondary multi-section anchoring anchor cable and use method thereof |
| CN112177648A (en) * | 2020-09-28 | 2021-01-05 | 中国矿业大学 | Novel anti-shearing large-deformation energy-absorbing anchor rod |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0044272A2 (en) * | 1980-07-11 | 1982-01-20 | SIG Schweizerische Industrie-Gesellschaft | Device for pressing a two-component adhesive into a pipe in order to produce a non-prestressed anchor |
| CN202595738U (en) * | 2012-05-17 | 2012-12-12 | 王茂华 | Combined anchor rod |
| CN103643977A (en) * | 2013-11-21 | 2014-03-19 | 中国矿业大学 | Full-anchor partition pressure transferring grouting anchor rod and application method thereof |
| CN103953375A (en) * | 2014-04-14 | 2014-07-30 | 东北大学 | Combined type anchor rod with elastic yielding and great damping characteristics |
| CN104612730A (en) * | 2014-12-10 | 2015-05-13 | 重庆大学 | Large-deformation self-adaptation anchor rod |
| CN205172612U (en) * | 2015-12-07 | 2016-04-20 | 山东科技大学 | It presses large deformation stock to increase to hinder to let |
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2015
- 2015-12-07 CN CN201510889147.5A patent/CN105317452A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0044272A2 (en) * | 1980-07-11 | 1982-01-20 | SIG Schweizerische Industrie-Gesellschaft | Device for pressing a two-component adhesive into a pipe in order to produce a non-prestressed anchor |
| CN202595738U (en) * | 2012-05-17 | 2012-12-12 | 王茂华 | Combined anchor rod |
| CN103643977A (en) * | 2013-11-21 | 2014-03-19 | 中国矿业大学 | Full-anchor partition pressure transferring grouting anchor rod and application method thereof |
| CN103953375A (en) * | 2014-04-14 | 2014-07-30 | 东北大学 | Combined type anchor rod with elastic yielding and great damping characteristics |
| CN104612730A (en) * | 2014-12-10 | 2015-05-13 | 重庆大学 | Large-deformation self-adaptation anchor rod |
| CN205172612U (en) * | 2015-12-07 | 2016-04-20 | 山东科技大学 | It presses large deformation stock to increase to hinder to let |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442955A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive friction formula anchor pole |
| CN109723480A (en) * | 2018-12-27 | 2019-05-07 | 山东科技大学 | Tension and compression coupling for country rock large deformation, which allows, presses energy-absorbing grouted anchor bar and working method |
| CN109723480B (en) * | 2018-12-27 | 2020-04-24 | 山东科技大学 | Tension-compression coupling yielding energy-absorbing grouting anchor rod for large deformation of surrounding rock and working method |
| CN110593929A (en) * | 2019-10-28 | 2019-12-20 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Secondary multi-section anchoring anchor cable and use method thereof |
| CN112177648A (en) * | 2020-09-28 | 2021-01-05 | 中国矿业大学 | Novel anti-shearing large-deformation energy-absorbing anchor rod |
| CN112177648B (en) * | 2020-09-28 | 2021-05-25 | 中国矿业大学 | Novel anti-shearing large-deformation energy-absorbing anchor rod |
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Application publication date: 20160210 |