CN104165799B - A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test - Google Patents
A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test Download PDFInfo
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- CN104165799B CN104165799B CN201410360631.4A CN201410360631A CN104165799B CN 104165799 B CN104165799 B CN 104165799B CN 201410360631 A CN201410360631 A CN 201410360631A CN 104165799 B CN104165799 B CN 104165799B
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Abstract
A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test, including the first secondary beam be arrangeding in parallel supported by four expansion anchor rods and the second secondary beam, girder is perpendicular to the first secondary beam and the second secondary beam, and girder two ends are fixing with first, second secondary beam respectively to be connected. Also include vertical load maintainer and cutting mechanism. Expansion anchor rod mainly by screw rod, upper swollen plug, flap sleeve pipe and under swollen plug be assembled into. Wherein flap sleeve pipe is made up of three the arc lobe docking being along the circumferential direction distributed, and the angle of the axis of each arc lobe two ends correspondence flap sleeve pipe is 120 °. Vertical load maintainer includes horizontal roller bearing row, vertical jack and horizontal steel plate. Cutting mechanism includes the first vertical steel backing plate, shearing jack, force-transmitting block and the second vertical steel backing plate. Easy construction of the present invention, destructive little, save the engineering time, in particular improve anchoring effect.
Description
Technical field
The present invention relates to a kind of grinding coagulation soil in-situ anti-shear test device, be specifically related to a kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test.
Background technology
The good and bad performance that Roller Compacted Concrete Dam layer surfaces combines directly affects the quality of grinding coagulation soil, it is therefore necessary to scene carries out the in-situ anti-shear test of grinding coagulation soil. Grinding coagulation soil in-situ anti-shear test is a comprehensive stronger test, and operating procedure is complicated. Assay device is mainly made up of vertical loading system, cutting system, anchor pole counter force system. The loading method of commonly used vertical load in test has ballast method and anchor pole method at present.
Ballast method needs constantly to repeat transport and lifting, there is the consuming shortcoming such as set-up time length, low, the poor stability of security performance. The many reinforcing bars less by diameter of traditional anchoring anchor pole or dowel are made, in hole, a certain amount of Anchor Agent is injected after punching, it is inserted into reinforcing bar, and rotate along same direction, Anchor Agent is made to wrap up the body of rod well, form bond stress, owing to Anchor Agent needs certain setting time, just can use when intensity reaches requirement, therefore from anchor pole bury underground complete take time to coming into operation longer, and anchoring after anchor pole use after namely cancel, be inconvenient to reclaim, remain in anchoring body, it is likely that other construction is formed obstacle, also wastes material simultaneously. The inadequate anchor force of the little anchorage depth of bolt diameter is also relatively small; in order to reach test requirements document generally require punching very deep; embedment anchor pole is longer; and it is also extremely unstable to be supported primary-secondary beam by the less reinforcing bar of diameter or dowel, generally also needs to fix as support arm with steel pipe around anchor pole to add stiff stability. Owing to grinding coagulation soil in-situ anti-shear test need to carry out at engineering site, environment is changeable, and traditional ballast method and anchor pole method have significant limitation, performance difficulty.
Summary of the invention
The purpose of the present invention, is to provide the anchoring counterforce device of a kind of grinding coagulation soil in-situ anti-shear test.Easy construction of the present invention, destructive little, anchor force strong, convenient disassembly, can Reusability, and save test material, reduce cost, shorten the test period.
The technical scheme is that
A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test, including anchor pole counter-force mechanism, vertical load maintainer and cutting mechanism, it is characterised in that:
Anchor pole counter-force mechanism, including the first expansion anchor rod, the second expansion anchor rod, the 3rd expansion anchor rod, the 4th expansion anchor rod, the first secondary beam, the second secondary beam and girder.
First expansion anchor rod mechanism, including screw rod, hold-doun nut, upper swollen plug, flap sleeve pipe, open type garter spring, under swollen plug, the first support bar and movable nut.
The upper and lower side of screw rod has external screw thread respectively, and centre is non-threaded section. Hold-doun nut is conventional hexagonal nut, and this nut and screw rod are welded and fixed; Upper swollen plug lower end is conically shaped body, and its center is unthreaded hole; Under swollen plug be conically shaped body, its centre bore has female thread. Flap sleeve pipe is made up of three the arc lobe part docking being along the circumferential direction distributed, and the angle of arc lobe part two ends correspondence flap casing axis is 120 °. The upper and lower end of flap sleeve pipe respectively with upper swollen plug and under swollen plug contact, the external diameter of the internal diameter of three arc lobe parts of flap sleeve upper end and the tapering body portion of upper swollen plug matches, the internal diameter of three arc lobe parts of flap its lower end with under swollen footpath beyond the Great Wall match, this ensure that upper and lower tapered expansion plug can embed flap inside pipe casing. Flap sleeve outer wall Shang You bis-road annular groove. Being respectively installed with open type garter spring in two road annular grooves, its effect is to make flap sleeve pipe banding when expanding, and loosens when shrinking, thus ensureing whole screw rod and the breathing of the first expansion anchor rod mechanism freely, and convenient disassembly.
Hold-doun nut, upper swollen plug, flap sleeve pipe and under swollen plug be from top to bottom sleeved on successively on screw rod. Wherein, hold-doun nut is fixed on the upper end of screw rod has bottom external thread section. Upper swollen plug and flap sleeve pipe are positioned at the non-threaded section of screw rod, and the bullet of upper swollen plug inserts in the upper end open of flap sleeve pipe. Under swollen plug rotation be located at the lower end of screw rod and have an external thread section, and under swollen plug insert in the lower ending opening of flap sleeve pipe.
Having female thread in the lower center hole of the first support bar, the upper end of screw rod connects with external screw thread and the first support bar lower end.
Second expansion anchor rod, the 3rd expansion anchor rod and the 4th expansion anchor rod are structurally identical with the first expansion anchor rod.
First expansion anchor rod and the second expansion anchor rod are vertically arranged, and the upper end of the first support bar of the first expansion anchor rod and the second support bar of the second expansion anchor rod is each passed through the two ends of the first secondary beam and is connected with movable nut. Second secondary beam be arranged in parallel with first time beam. 3rd expansion anchor rod and the 4th expansion anchor rod are vertically arranged. 3rd support bar of the 3rd expansion anchor rod and the 4th support bar of the 4th expansion anchor rod are each passed through the two ends of the second secondary beam and are connected with movable nut. Girder horizontally set, its two ends fix vertical with the first secondary beam and the second secondary beam respectively is connected.
Vertical load maintainer includes horizontal roller bearing row, vertical jack and horizontal billet. Horizontal roller bearing row supports on the lower surface of girder. Horizontal roller bearing row is arranged on vertical jack, and vertical jack is arranged on horizontal billet.
Cutting mechanism includes the first vertical steel backing plate, shearing jack, force-transmitting block and the second vertical steel backing plate. First vertical steel backing plate and the second vertical steel backing plate are vertically arranged, and shearing jack is supported on the first vertical steel backing plate, and force-transmitting block left end is supported on the base of shearing jack, and force-transmitting block right-hand member is supported on the second vertical steel backing plate.
In using, on test component, four anchor holes are accomplished fluently with rig, four expansion anchor rods are inserted respectively in four anchor holes, be tightened nut, screw rod and then rotates together, under swollen plug screw gradually along with screw thread, the conical section making upper and lower two swollen plugs is inserted simultaneously in the sleeve pipe being combined into by three arc lobe parts, three arc lobe parts are flared out immediately, the sleeve pipe that two open type garter springs are combined into also with three arc lobe parts expands outwardly, owing to casing expandable forms friction bond stress, reach anchoring effect.
4 support bars connected typically by 4 expansion anchor rods in test, 4 expansion anchor rods are connected with 4 support bars respectively by upper end screw rod, setting up the first secondary beam between wherein two support bar, erection second time beam between other two support bars, with the fixing secondary beam of movable nut; Erection girder in the middle of two secondary beams, girder bottom installs horizontal roller bearing row, vertical jack, horizontal billet successively. The whole all parts of vertical load maintainer need to be installed on the same axis, perpendicular with predetermined shear surface. Next to that installation cutting mechanism, erection sequence is vertical steel backing plate, shearing jack, force-transmitting block, vertical steel backing plate, and cutting system should strictly position, and centrage to be parallel to predetermined shear surface.
Anchoring counterforce device can slowly be further applied load after installing and carry out test.
Compared with prior art, the invention has the advantages that:
(1) expansion anchor rod is compared with conventional anchor, and its principle is dependent on the frictional force of bolt expansion generation and reaches anchoring effect. Expansion anchor rod in the present invention, when be tightened nut time, by upper and lower swollen plug squeezing action, make the sleeve outer wall of three arc lobe parts compositions can keep parallel with screw rod all the time, the frictional resistance of generation is bigger evenly, and therefore anchor force is higher. By pull-out test, expansion anchor rod can provide the anchor force more than 10kN.
(2) easy construction, destructive little, owing to anchor force is higher, therefore punch without beating very deep as conventional anchor, without injecting Anchor Agent when burying underground, save the engineering time.
(3) expansion anchor rod is fixing by threadeding with support bar, and support bar adopts the steel pipe that diameter is thicker to replace traditional reinforcing bar and dowel, has better stability and rigidity. Support bar and secondary beam, be connected also by screw thread between secondary beam with girder and fixing, and whole counter force system is more firm, stable, and convenient dismounting, it is possible to Reusability, saves test material, reduction cost, improves work efficiency.
Accompanying drawing explanation
Fig. 1 is expansion anchor rod structural representation.
Fig. 2 is upper swollen plug structure schematic diagram.
Fig. 3 is flap sleeve structure schematic diagram.
Fig. 4 is swollen plug structure schematic diagram under being.
Fig. 5 is the A A view of Fig. 3.
Fig. 6 is that the present invention uses view.
Detailed description of the invention
A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test, including anchor pole counter-force mechanism, vertical load maintainer and cutting mechanism, it is characterised in that:
Anchor pole counter-force mechanism, including the first expansion anchor rod, the second expansion anchor rod, the 3rd expansion anchor rod, the 4th expansion anchor rod, the first secondary beam the 19, second secondary beam 20 and girder 21.
First expansion anchor rod mechanism, including screw rod 1, hold-doun nut 2, upper swollen plug 3,4 times swollen plug the 5, first support bars 11 of flap sleeve pipe and the first movable nut 15.
The upper and lower side of screw rod 1 has external screw thread respectively, and centre is non-threaded section 6. Hold-doun nut 2 is conventional hexagonal nut, and this nut 2 is welded and fixed with screw rod 1;Upper swollen plug 3 bottom is conically shaped body, and its center is unthreaded hole; Under swollen plug 5 be conically shaped body, its centre bore has female thread. Flap sleeve pipe 4 is made up of three the arc lobe part docking being along the circumferential direction distributed, and the axis angle of flap sleeve pipe 4 is 120 ° by each arc lobe part two ends. The upper and lower end of flap sleeve pipe 4 respectively with upper swollen plug 3 and under swollen plug 5 contact, the external diameter of the conically shaped body of the internal diameter of three arc lobe parts of flap sleeve upper end and upper swollen plug 3 bottom matches, the internal diameter of three arc lobe parts of flap its lower end with under swollen plug 5 external diameter match, this ensure that upper and lower tapered expansion plug can embed flap sleeve pipe 4 internal. Outside flap sleeve pipe 4, there are two road annular grooves 8 third office. Two annular groove place, roads are respectively installed with two open type garter springs 7, and its effect is to make flap sleeve pipe 4 banding when expanding, and loosens when shrinking, thus ensureing whole screw rod 1 and the breathing of the first expansion anchor rod mechanism freely, and convenient disassembly.
Hold-doun nut 2, upper swollen plug 3, flap sleeve pipe 4 and under swollen plug 5 be from top to bottom sleeved on successively on screw rod 1. Wherein, hold-doun nut 2 is fixed on the upper end of screw rod 1 has bottom external thread section. Upper swollen plug 3 and flap sleeve pipe 4 are positioned at the non-threaded section of screw rod 1, and the bullet of upper swollen plug 3 inserts in the upper end open of flap sleeve pipe 4. Under the rotation of swollen plug 5 be located at the lower end of screw rod 1 and have an external thread section, and under swollen plug 5 insert in the lower ending opening of flap sleeve pipe 4.
Having female thread in the lower center hole of the first support bar 11, the upper end of screw rod 1 connects with external screw thread and the first support bar 11 lower end.
Second expansion anchor rod, the 3rd expansion anchor rod and the 4th expansion anchor rod are structurally identical with the first expansion anchor rod.
First expansion anchor rod and the second expansion anchor rod are vertically arranged, and the upper end of the first support bar 11 of the first expansion anchor rod and the second support bar 12 of the second expansion anchor rod is each passed through the two ends of the first secondary beam 19 and is connected with the first movable nut 15 and the second movable nut 16. Second secondary beam 20 and the first secondary beam 19 be arranged in parallel. 3rd expansion anchor rod and the 4th expansion anchor rod are vertically arranged. 3rd support bar 13 of the 3rd expansion anchor rod and the 4th support bar 14 of the 4th expansion anchor rod are each passed through the two ends of the second secondary beam 20 and are connected with the 3rd movable nut 17 and the 4th movable nut 18. Girder 21 horizontally set, its two ends fix vertical with the first secondary beam 19 and the second secondary beam 20 respectively is connected.
Vertical load maintainer includes horizontal roller bearing row 22, vertical jack 23 and horizontal billet 24. Horizontal roller bearing row 22 supports on the lower surface of girder 21. Horizontal roller bearing row 22 is arranged on vertical jack 23, and vertical jack 23 is arranged on horizontal billet 24.
Cutting mechanism includes the first vertical steel backing plate 25, shearing jack 26, force-transmitting block 9 and the second vertical steel backing plate 10. First vertical steel backing plate 25 and the second vertical steel backing plate 10 are vertically arranged, and shearing jack 26 is supported on the first vertical steel backing plate 25, and force-transmitting block 9 left end is supported on the base of shearing jack 26, and force-transmitting block 9 right-hand member is supported on the second vertical steel backing plate 10.
In using, on test component, four anchor holes are accomplished fluently with rig, four expansion anchor rods are inserted respectively in four anchor holes, be tightened nut 2, screw rod and then rotates together, under swollen plug 5 screw gradually along with screw thread, the conical section making upper and lower two swollen plugs is inserted simultaneously in the sleeve pipe 4 being combined into by three arc lobe parts, three arc lobe parts are flared out immediately, the arc shrouds 4 that two open type garter springs 7 are combined into also with three arc lobe parts expands outwardly, owing to casing expandable forms friction bond stress, reach anchoring effect.
Four support bars connected typically by four expansion anchor rods in test, four expansion anchor rods are connected with four support bars respectively by upper end screw rod, setting up the first secondary beam 19 between wherein two support bar, erection second time beam 20 between other two support bars, with the fixing secondary beam of movable nut; Erection girder 21 in the middle of two secondary beams, girder 21 bottom installs horizontal roller bearing row 22, vertical jack 23, horizontal billet 24 successively. The whole all parts of vertical load maintainer need to be installed on the same axis, perpendicular with predetermined shear surface. Next to that installation cutting mechanism, erection sequence is the first vertical steel backing plate 25, shearing jack 26, force-transmitting block 9, the second vertical steel backing plate 10, and cutting system should strictly position, and centrage to be parallel to predetermined shear surface.
Anchoring counterforce device can slowly be further applied load after installing and carry out test.
Claims (1)
1. for an anchoring counterforce device for grinding coagulation soil in-situ anti-shear test, including anchor pole counter-force mechanism, vertical load maintainer and cutting mechanism, it is characterised in that:
Anchor pole counter-force mechanism, including the first expansion anchor rod, the second expansion anchor rod, the 3rd expansion anchor rod, the 4th expansion anchor rod, the first secondary beam (19), the second secondary beam (20) and girder (21);
First expansion anchor rod mechanism, including screw rod (1), hold-doun nut (2), upper swollen plug (3), flap sleeve pipe (4), under swollen plug (5), the first support bar (11) and the first movable nut (15);
The upper and lower side of screw rod (1) has external screw thread respectively, and centre is non-threaded section (6), and nut (2) and screw rod (1) are welded and fixed; Upper swollen plug (3) bottom is conically shaped body, and its center is unthreaded hole; Under swollen plug (5) be conically shaped body, its centre bore has female thread, and flap sleeve pipe (4) is made up of three the arc lobe parts docking being along the circumferential direction distributed, and the angle of the axis of each arc lobe part two ends correspondence flap sleeve pipe (4) is 120 °; The upper and lower end of flap sleeve pipe (4) respectively with upper swollen plug (3) and under swollen plug (5) contact, the external diameter of the bullet of the internal diameter of three arc lobe parts of flap sleeve pipe (4) upper end and upper swollen plug (3) bottom matches, the internal diameter of three arc lobe parts of flap its lower end with under swollen plug (5) external diameter match; Flap sleeve pipe (4) offers two road annular grooves (8) respectively, is respectively installed with open type garter spring (7) in two road annular grooves (8);
Hold-doun nut (2), upper swollen plug (3), flap sleeve pipe (4) and under swollen plug (5) be from top to bottom sleeved on screw rod (1) successively; Wherein, hold-doun nut (2) is fixed on the upper end of screw rod (1) to be had bottom external thread section, and upper swollen plug (3) and flap sleeve pipe (4) are positioned at the non-threaded section of screw rod (1), and the bullet of upper swollen plug (3) inserts in the upper end open of flap sleeve pipe (4); Under swollen plug (5) rotation be located at the lower end of screw rod (1) and have an external thread section, and under swollen plug (5) insert in the lower ending opening of flap sleeve pipe (4);
Having female thread in the lower center hole of the first support bar (11), the upper end of screw rod (1) connects with external screw thread and the first support bar (11) lower end;
Second expansion anchor rod, the 3rd expansion anchor rod and the 4th expansion anchor rod are structurally identical with the first expansion anchor rod;
First expansion anchor rod and the second expansion anchor rod are vertically arranged, and the upper end of first support bar (11) of the first expansion anchor rod and second support bar (12) of the second expansion anchor rod is each passed through the two ends of the first secondary beam (19) and is connected with the first movable nut (15) and the second movable nut (16);Second secondary beam (20) and the first secondary beam (19) be arranged in parallel, and the 3rd expansion anchor rod and the 4th expansion anchor rod are vertically arranged; 3rd support bar (13) of the 3rd expansion anchor rod and the 4th support bar (14) of the 4th expansion anchor rod are each passed through the two ends of the second secondary beam (20) and are connected with the 3rd movable nut (17) and the 4th movable nut (18); Girder (21) horizontally set, its two ends fix vertical with the first secondary beam (19) and the second secondary beam (20) respectively is connected;
Vertical load maintainer includes horizontal roller bearing row (22), vertical jack (23) and horizontal billet (24), horizontal roller bearing row (22) is supported on the lower surface of girder (21), horizontal roller bearing row (22) is arranged on vertical jack (23), and vertical jack (23) is arranged on horizontal billet (24);
Cutting mechanism includes the first vertical steel backing plate (25), shearing jack (26), force-transmitting block (9) and the second vertical steel backing plate (10), first vertical steel backing plate (25) and the second vertical steel backing plate (10) are vertically arranged, shearing jack (26) is supported on the first vertical steel backing plate (25), force-transmitting block (9) left end is supported on the base of shearing jack (26), and force-transmitting block (9) right-hand member is supported on the second vertical steel backing plate (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360631.4A CN104165799B (en) | 2014-07-28 | 2014-07-28 | A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410360631.4A CN104165799B (en) | 2014-07-28 | 2014-07-28 | A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test |
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| CN104165799A CN104165799A (en) | 2014-11-26 |
| CN104165799B true CN104165799B (en) | 2016-06-15 |
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| CN201410360631.4A Active CN104165799B (en) | 2014-07-28 | 2014-07-28 | A kind of anchoring counterforce device for grinding coagulation soil in-situ anti-shear test |
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| CN105203409B (en) * | 2015-10-15 | 2017-11-24 | 山东科技大学 | A kind of rock mass field direct shear test method for anchoring pressurization |
| CN106442171A (en) * | 2016-11-04 | 2017-02-22 | 中国有色金属工业昆明勘察设计研究院 | Horizontal type diagonal supporting device for vertical loading of large in-situ shear test |
| CN106768974B (en) * | 2017-01-16 | 2022-01-18 | 中国石油天然气集团有限公司 | Hydraulic anchor test device |
| CN109594559B (en) * | 2017-09-30 | 2024-06-07 | 上海宝冶集团有限公司 | Detachable counterforce anchor rod assembly and application method thereof |
| CN108279170A (en) * | 2018-01-29 | 2018-07-13 | 中国电力科学研究院有限公司 | A kind of scene vertical pressure loading device in situ and method |
| CN108593425B (en) * | 2018-06-22 | 2024-03-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Counterforce loading device for open-air rock mass mechanical test |
| CN108680442A (en) * | 2018-08-07 | 2018-10-19 | 沈阳建筑大学 | A kind of built-in hanger shear strength test device and detection method |
| CN109163985B (en) * | 2018-08-15 | 2020-09-08 | 三峡大学 | In-situ testing device and method for testing shear strength and long-term creep deformation of rock sample |
| CN109030179B (en) * | 2018-08-22 | 2022-05-10 | 上海核工程研究设计院有限公司 | Self-balancing structure for in-plane reciprocating shear test of steel plate concrete wall and manufacturing method |
| CN117268902A (en) * | 2023-10-30 | 2023-12-22 | 中国地质大学（北京） | Pulling-resistant device for in-situ direct shear test and using method |
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| JPH09166534A (en) * | 1995-12-18 | 1997-06-24 | Masaru Yamauchi | Simplified original position rock shearing testing machine and testing method usin the same |
| CN2550752Y (en) * | 2002-07-19 | 2003-05-14 | 张百全 | Self anchoring method anchor for pile base test axial bearing force |
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Address after: No. 1, fourteen weft Road, peace zone, Shenyang, Liaoning, Liaoning Patentee after: Liaoning water conservancy and Hydropower Research Institute Co., Ltd. Address before: No. 1, fourteen weft Road, peace zone, Shenyang, Liaoning, Liaoning Patentee before: Liaoning Water-Conservancy Hydroelectricity Science Academy |
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