CN102108703B - Adjustable prestressed anchoring device - Google Patents
Adjustable prestressed anchoring device Download PDFInfo
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- CN102108703B CN102108703B CN 201010595142 CN201010595142A CN102108703B CN 102108703 B CN102108703 B CN 102108703B CN 201010595142 CN201010595142 CN 201010595142 CN 201010595142 A CN201010595142 A CN 201010595142A CN 102108703 B CN102108703 B CN 102108703B
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- anchor
- anchor cable
- pedestal
- dish
- screw rod
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Abstract
The invention belongs to the technical field of anchoring of rock and soil of civil engineering and provides an adjustable prestressed anchoring device. The anchoring device comprises an anchor cable (1), a clamping piece (2), an anchor disk (3), a base (5), a position-changing screw rod (7) and a pressure-bearing plate (8), wherein the anchor disk (3) which comprises a central threaded hole and can change the position is positioned in a column sleeve of the base and can move axially under the action of the position-changing screw rod (7), move axially relative to the base (5), the bearing plate (8), a coupling beam or a waist beam under the action of external force, enable the anchor cable which is fixed on the anchor disk (3) through the clamping piece (2) to move axially accordingly, and actively compensate for strain generated by stress variation of the anchor cable. The anchoring device can actively compensate for the strain generated by the stress variation, further enable the prestress of the prestressed anchor cable to change within an allowable range, increase the reliability of the anchoring system and improve the safety.
Description
Technical field
The invention belongs to civil engineering ground anchorage technical field, relate generally to a kind of scalable prestressed anchor fixing apparatus.
Background technology
In field of civil engineering, the ground anchorage technology also is tending towards ripe and perfect in engineering experience and corresponding theory research.In the work progress of engineerings such as underground construction, construction of tunnel, mining engineering, reclamation, side slope and foundation ditch;, adopt anchor shaft anchor cable that support reinforcement is carried out on the stratum widely and handle because the foundation deformation that disasters such as earthquake, explosion, landslide cause caves in or unstability produces precarious position for preventing.Anchor shaft anchor cable and corresponding grouting reinforcement body that utilization is arranged in the stratum are reinforced the stratum, thereby improve the globality on stratum, and the control stratum deformation makes the stratum be in the stability and safety state.Earthquake, geological disaster such as come down, cave in take place frequently, because the creep on stratum, steel are lax, structural change etc. causes that the anchor rod prestress value changes, the anchoring system effect can't guarantee the stratum safety and stability.
Summary of the invention
The objective of the invention is to propose a kind of scalable prestressed anchor fixing apparatus, the loss of prestress of active compensation anchor cable, the reliability of increase anchoring system improves safety.
The present invention accomplishes the technical scheme that its invention task taked:
Scalable prestressed anchor fixing apparatus of the present invention, described anchor device mainly comprises anchor cable, intermediate plate, anchor dish, pedestal, displacement screw rod, bearing plate; Wherein, described anchor dish has the screwed hole of centre that cooperates with the displacement screw rod, constitutes the anchor dish structure of variable bit; The anchor cable that said employing steel strand, reinforcing bar, special steel pipe, high-strength inorganic material etc. are processed is single, also can be multi beam; Anchor cable is used for prestressing force to anchor pole being provided, and intermediate plate is used for anchor cable is fixed on the anchor dish, and anchor dish circumference encloses and is uniformly distributed with through hole, is used for fixing anchor cable and intermediate plate, and intermediate plate is pressed on anchor cable on the anchor dish automatically when applying prestressing force; Anchor dish, anchor cable and intermediate plate become one after finishing; Described pedestal has a column sleeve, on the bottom surface of pedestal, has the through hole that supplies anchor cable to pass through; The anchor dish of described variable bit is positioned at the column sleeve of pedestal; Under the displacement screw acting, can move axially; And under external force; Pedestal, loaded plate, company's beam or waist rail are done axially-movable relatively, make the anchor cable that is fixed on the anchor dish by intermediate plate do axially-movable thereupon, the strain that active compensation anchor cable STRESS VARIATION produces; Set displacement screw rod cooperates with the screwed hole of centre of variable bit anchor dish, and smooth flat is processed in its bottom, is positioned at the center counterbore of pedestal, and freely rotates, and tip designs is interior hexagonal or outer six sides, is convenient to adjustment and goes up and down; Described loaded plate is fixed on and connects on beam or the waist rail, and said loaded plate has the through hole that supplies anchor cable to pass through with base bottom surface through hole opposite position, does the time spent in generation external force, and it is fixed that loaded plate connects beam relatively; Loaded plate on described pedestal and the company's of being fixed on beam or the waist rail combines as a whole through bolt, is not subjected to displacement with loaded plate.
But the strain that the anchor device active compensation STRESS VARIATION that the present invention proposes produces, thereby the prestressing force that reaches anchor cable changes in allowed limits, increases the reliability of anchoring system, has improved safety.
Description of drawings
Fig. 1 is a scalable prestressed anchor fixing apparatus sketch map of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of anchor dish among the present invention.
Fig. 4 is the structural representation for pedestal among the present invention.
Among the figure: 1, anchor cable, 2, intermediate plate, 3, the anchor dish, 4, counterbore, 5, pedestal, 6, bolt, 7, the displacement screw rod, 8, loaded plate.
The specific embodiment
In conjunction with accompanying drawing and embodiment the present invention is further specified:
Like Fig. 1, shown in Figure 2, and with reference to Fig. 3, Fig. 4, a kind of scalable prestressed anchor fixing apparatus is fixed on prop with loaded plate 8 and connects on beam or the waist rail, and pedestal 5 is connected and fixed through bolt 6 and loaded plate 8; Pedestal 5 has a column sleeve, on the bottom surface of pedestal, has the through hole that supplies anchor cable to pass through; Has the counterbore that supplies displacement screw rod 7 to insert in the center of the bottom surface of pedestal; Loaded plate has the through hole that supplies anchor cable to pass through with base bottom surface through hole opposite position; Anchor cable 1 passes through hole on anchor dish 3, pedestal 5 and the loaded plate 8 and fastening by the intermediate plate 2 in anchor dish 3 through holes; Said anchor cable 1 can be steel strand, reinforcing bar, special steel pipe or high-strength inorganic material, and anchor cable is single, also can be multi beam; Described anchor dish 3 has the screwed hole of centre that cooperates with displacement screw rod 7, constitutes the anchor dish structure of variable bit; Anchor dish 3 is positioned at the column sleeve of pedestal 5; Under 7 effects of displacement screw rod, can move axially; And under external force; Pedestal 5, loaded plate 8, company's beam or waist rail are done axially-movable relatively, make the anchor cable that is fixed on the anchor dish 3 by intermediate plate 2 do axially-movable thereupon, the strain that active compensation anchor cable STRESS VARIATION produces; Displacement screw rod 7 bottoms are smooth flat with the end face that contacts of base bottom surface counterbore, and displacement screw rod 7 can be rotated in counterbore, and tip designs is interior hexagonal or outer six sides, are convenient to adjustment and go up and down.
Installation process of the present invention is: at first, displacement screw rod 7 is screwed in anchor dish 3, then anchor dish 3 is put into the pedestal column sleeve, displacement screw rod 7 is positioned at the pedestal counterbore; Once more, pedestal 5 is fixed on the loaded plate 8 and pedestal 5 and loaded plate 8 on the company's of being fixed on beam or the waist rail are combined as a whole; At last, through hole aligns, and an end is anchored at anchor cable 1 in the stratum passes the through hole of loaded plate 8, pedestal 5 successively and be fastened in the through hole of anchor dish 3 through intermediate plate 2.Apply prestressing force through jack pair anchor cable 1; During adjustment anchor cable prestressing force, be, make anchor dish 3 that displacement upwards take place, compensate the prestressing force that anchor cable loses with this through rotary screw 7; When promptly working,, then, anchor dish 3 is moved upward through rotary screw 7 if anchor cable prestressing force reduces (promptly losing), tension anchor cable (promptly it being applied prestressing force), other parts are fixed.
Described embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Do not breaking away under the design concept prerequisite of the present invention; Various modification and improvement that engineers and technicians in this area make technical scheme of the present invention all should fall in protection scope of the present invention.
Claims (1)
1. scalable prestressed anchor fixing apparatus, it is characterized in that: described anchor device comprises anchor cable (1), intermediate plate (2), anchor dish (3), pedestal (5), displacement screw rod (7), loaded plate (8); Wherein, described anchor dish (3) has the screwed hole of centre that cooperates with displacement screw rod (7), constitutes the anchor dish structure of variable bit; The said anchor cable that adopts steel strand, reinforcing bar, special steel pipe, high-strength inorganic material to process is single, or is multi beam; Anchor cable (1) is used for prestressing force to anchor pole being provided; Intermediate plate (2) is used for anchor cable is fixed on anchor dish (3); Anchor dish (3) circumference encloses and is uniformly distributed with through hole; Be used for fixing anchor cable (1) and intermediate plate (2), intermediate plate when applying prestressing force (2) is pressed on anchor cable on the anchor dish (3) automatically, described anchor device axially-movable; Described pedestal (5) has a column sleeve, on the bottom surface of pedestal, has the through hole that supplies anchor cable to pass through; The anchor dish (3) of described variable bit is positioned at the column sleeve of pedestal (5); Under displacement screw rod (7) effect, can move axially; And under external force; Pedestal (5), loaded plate (8), company's beam or waist rail are done axially-movable relatively, make the anchor cable that is fixed on the anchor dish (3) by intermediate plate (2) do axially-movable thereupon, the strain that active compensation anchor cable STRESS VARIATION produces; Set displacement screw rod (7) cooperates with the screwed hole of centre of variable bit anchor dish, and smooth flat is processed in its bottom, is positioned at the center counterbore of pedestal (5), and freely rotates, and tip designs is interior hexagonal or outer six sides, is convenient to adjustment and goes up and down; On described loaded plate (8) company's of being fixed on beam or the waist rail, said loaded plate (8) has the through hole that supplies anchor cable to pass through with base bottom surface through hole opposite position, does the time spent in generation external force, and loaded plate (8) connects beam relatively or waist rail is fixed; Loaded plate (8) on described pedestal (5) and the company's of being fixed on beam or the waist rail combines as a whole through bolt (6), is not subjected to displacement with loaded plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010595142 CN102108703B (en) | 2010-12-20 | 2010-12-20 | Adjustable prestressed anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010595142 CN102108703B (en) | 2010-12-20 | 2010-12-20 | Adjustable prestressed anchoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108703A CN102108703A (en) | 2011-06-29 |
| CN102108703B true CN102108703B (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010595142 Active CN102108703B (en) | 2010-12-20 | 2010-12-20 | Adjustable prestressed anchoring device |
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| CN103321222B (en) * | 2013-05-24 | 2015-05-06 | 郭财宝 | Recoverable type anchor rod, pressure-bearing plate type anchor pile and anchoring method |
| CN103758162B (en) * | 2014-02-20 | 2015-07-08 | 中铁一局集团有限公司 | Roadbed slope frame girder anchor rod drawing instrument |
| CN105569273B (en) * | 2015-12-16 | 2018-07-27 | 天津银龙高科新材料研究院有限公司 | A kind of steel strand wires end anchorage device |
| CN105421667A (en) * | 2015-12-16 | 2016-03-23 | 天津银龙高科新材料研究院有限公司 | Steel strand anchoring structure |
| CN107676121B (en) * | 2017-11-10 | 2024-05-14 | 长安大学 | Tunnel prestressed anchor rod and anchoring method |
| CN108179746A (en) * | 2017-12-27 | 2018-06-19 | 中国科学院武汉岩土力学研究所 | The existing anchorage cable stretching device of assembly type and existing anchor cable two times tensioning device |
| CN108086331A (en) * | 2017-12-27 | 2018-05-29 | 中国科学院武汉岩土力学研究所 | Bonded existing anchorage cable stretching device and existing anchor cable two times tensioning device |
| CN108222029A (en) * | 2017-12-27 | 2018-06-29 | 湖北省交通运输厅鄂西高速公路管理处 | The two times tensioning method of intermediate linking anchor cable |
| CN108130907A (en) * | 2017-12-27 | 2018-06-08 | 中国科学院武汉岩土力学研究所 | The two times tensioning method of bonded existing anchor cable |
| CN108166494A (en) * | 2017-12-27 | 2018-06-15 | 中国科学院武汉岩土力学研究所 | The existing anchorage cable stretching device of plain type and existing anchor cable two times tensioning device |
| CN108167005A (en) * | 2017-12-27 | 2018-06-15 | 中国科学院武汉岩土力学研究所 | Dismountable anchorage cable tensioner and anchor cable two times tensioning system |
| CN108086332A (en) * | 2017-12-27 | 2018-05-29 | 中国科学院武汉岩土力学研究所 | The existing anchorage cable stretching device of assembled and existing anchor cable two times tensioning device |
| CN107964950A (en) * | 2017-12-27 | 2018-04-27 | 中国科学院武汉岩土力学研究所 | Riveted type anchorage cable stretching device and anchor cable two times tensioning device |
| CN108104120A (en) * | 2017-12-27 | 2018-06-01 | 中国科学院武汉岩土力学研究所 | Intermediate linking anchorage cable stretching device and anchor cable two times tensioning device |
| CN108130908A (en) * | 2017-12-27 | 2018-06-08 | 中国科学院武汉岩土力学研究所 | The two times tensioning method of the existing anchor cable of assembled |
| CN108071113A (en) * | 2017-12-27 | 2018-05-25 | 中国科学院武汉岩土力学研究所 | The existing anchorage cable stretching device of welded type and existing anchor cable two times tensioning device |
| CN108166510A (en) * | 2017-12-27 | 2018-06-15 | 中国科学院武汉岩土力学研究所 | The two times tensioning method of the existing anchor cable of plain type |
| CN108179745A (en) * | 2017-12-27 | 2018-06-19 | 中国科学院武汉岩土力学研究所 | The two times tensioning method of the existing anchor cable of assembly type |
| CN108797582B (en) * | 2018-05-31 | 2021-05-18 | 新疆金风科技股份有限公司 | Prestress adjusting method and anchorage device |
| CN109440840A (en) * | 2018-12-13 | 2019-03-08 | 中国地质大学（武汉） | A kind of friction pile suitable for side slope model test-anchor cable attachment device |
| CN111561337A (en) * | 2020-03-19 | 2020-08-21 | 高军 | Device and method for arranging prestressed anchor rod in water-rich weak crushing surrounding rock tunnel |
| CN113882372B (en) * | 2021-10-22 | 2023-05-05 | 深圳市工勘岩土集团有限公司 | Anchor rod tensioning method after anchor sealing |
| CN113882368B (en) * | 2021-10-22 | 2022-11-29 | 深圳市工勘岩土集团有限公司 | Structure for tensioning anchor rod by utilizing anchor |
| CN113897955B (en) * | 2021-10-22 | 2023-02-24 | 深圳市工勘岩土集团有限公司 | Anchorage device convenient for tensioning anchor rod after anchor sealing |
| CN113882371B (en) * | 2021-10-22 | 2023-05-05 | 深圳市工勘岩土集团有限公司 | Anchor rod tensioning structure after anchor sealing |
| CN113882369B (en) * | 2021-10-22 | 2022-11-29 | 深圳市工勘岩土集团有限公司 | Method for tensioning anchor rod by using anchorage device |
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| Publication number | Publication date |
|---|---|
| CN102108703A (en) | 2011-06-29 |
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