CN104713668A - Load-displacement converting device and application method thereof - Google Patents
Load-displacement converting device and application method thereof Download PDFInfo
- Publication number
- CN104713668A CN104713668A CN201510049728.8A CN201510049728A CN104713668A CN 104713668 A CN104713668 A CN 104713668A CN 201510049728 A CN201510049728 A CN 201510049728A CN 104713668 A CN104713668 A CN 104713668A
- Authority
- CN
- China
- Prior art keywords
- load
- displacement
- anchor
- conversion equipment
- anchor pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a load-displacement converting device which is characterized in that figured steel, a lower bolster and an upper bolster are included, the figured steel is of a non-plane structure, a hole is formed in the center of the figured steel, an anchor rod or an anchor cable can penetrate through the hole, the figured steel has normal bearing force not smaller than the maximum axial force of an anchor rod or an anchor cable, along with increasing of the load on the figured steel, the figured steel becomes flat by pressing, certain relation exists between the load on the figured steel and generated displacement, according to the relation, measuring of the load is converted into measuring of displacement, and then the axial force of the anchor rod or the anchor cable is obtained. Anchor rod axial force measuring is easy, measuring cost is greatly lowered, and great significance is achieved on dynamic feedback supporting design of an engineering field.
Description
Technical field
The present invention relates to underground works anchor structure health detection field, specifically a kind of load-displacement conversion equipment for anchor pole or anchor cable and application process thereof.
Background technology
In recent years, anchor pole obtains a wide range of applications in underground engineering support field, has played vital role for reduction support cost and minimizing accident.Because anchor pole is embedded in country rock inside, belong to concealed structure, its Gernral Check-up and support action evaluation comparatively difficult.In order to assess support action and the health status of anchor pole, generally using anchor axial force as important evaluation index, but the measurement of anchor axial force is but very difficult.The anchor axial force measuring method adopted both at home and abroad at present mainly comprises: strain measurement method, pressure transducer mensuration and type vibration wire anchor ergometer.
Strain measurement method refers to before rockbolt installation, in bolt shaft to laying foil gauge or fiber grating, produces certain distortion, can measure the axial strain of anchor pole, according to the axle power of the strain calculation anchor pole recorded after rockbolt stress.The foil gauge adopted in this method and fiber grating very easily damage, and require higher to surrounding environment, and measurement result is unstable, and measurement result generally can only be as a reference.In addition, fiber grating strain measuring system cost is higher.
Pressure transducer mensuration refers to installs a pressure transducer in advance at anchor rod pallet board place, directly measures anchor axial force by pressure transducer.This method measuring accuracy can ensure, but cost is higher, and the cost of single pressure sensor reaches unit up to ten thousand, can cause great waste if do not recycled, and the words of recovery then can cause anchor pole to lose efficacy, and threatens engineering safety.
First bolt deformation is passed to vibratory string by type vibration wire anchor ergometer, thus changes the vibration frequency of vibratory string.The distortion of vibratory string can be obtained by vibratory string frequency detecting, and then obtain the distortion of anchor pole, and then try to achieve the axle power of anchor pole.This method needs to be welded on anchor pole by the two ends of vibratory string in advance, not only complicated operation, and welding quality is difficult to ensure, but also considerably increases the installation difficulty of anchor pole.
Summary of the invention
The object of the invention is to the measurement measurement of anchor pole or anchor cable axle power being converted into displacement, thus reduce axle power and measure cost, a kind of load-displacement conversion equipment and application process thereof are provided.
Its technical solution is: a kind of load-displacement conversion equipment, it is characterized in that mainly comprising: profile iron, lower bolster and upper padding plate, and profile iron is between lower bolster and upper padding plate, and three is centrally located on same axis; Described profile iron, there is nonplanar structure, its center is provided with hole, anchor pole or anchor cable can pass from this hole, this profile iron has the normal direction bearing capacity of the greatest axis power being not less than anchor pole or anchor cable, along with profile iron load increases, it is crushed gradually, has monotonically increasing relation between profile iron load and the displacement of generation; Described lower bolster and upper padding plate are surfacing, and pertusate steel plate is established at center, and anchor pole or anchor cable can pass from hole.
Described profile iron geometric configuration has various ways, only enumerates two kinds below: 1) peripheral shape of deformed steel is for circular, and three-dimensional shape is bowl-type; 2) peripheral shape of deformed steel is square, and three-dimensional shape is in " M " curved face type.
Application process of the present invention is:
1. mechanics and deformation characteristic test are carried out to described load-displacement conversion equipment; In normal direction, compression experiment is carried out to it by pressing machine, obtain the load-displacement curve of load-displacement conversion equipment;
2. skyhook or anchor cable; Employing conventional method installs lower bolster, deformed steel and upper padding plate after the grouted part of anchor pole is fixed on anchor hole successively, makes anchor pole or anchor cable through their reserved holes, then clamp nut; Measure the vertical range between upper padding plate upper surface and lower bolster upper surface;
3. anchor pole or anchor cable start stressed after, anchor axial force is by nut retroaction on load-displacement conversion equipment, and stressed rear generations of deformed steel is out of shape; Again measure the vertical range between upper padding plate upper surface and lower bolster upper surface, thus obtain the relative displacement of load-displacement conversion equipment pressurized generation;
The load-displacement curve of the load-displacement conversion equipment 4. 1. recorded according to step, and the relative displacement that 3. step records, conversion can obtain load-displacement conversion equipment load, and this load equals the axle power of anchor pole or anchor cable.
Ultimate principle of the present invention is: because the axle power directly measuring anchor pole is comparatively difficult, according to the relation between the application's deformed steel load and distortion, the measurement of load is converted into the measurement of displacement, and then tries to achieve the axle power of anchor pole or anchor cable.
The invention has the beneficial effects as follows: the load-displacement conversion equipment that the application proposes and application process thereof, make anchor axial force measurement become simple, greatly reduce measurement cost, the dynamic feedback design of its support for engineering site is significant.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the invention will be further described:
Fig. 1 is the principle schematic of load-displacement conversion equipment of the present invention and application process thereof;
Fig. 2 is the schematic top plan view of a kind of preferred implementation of described deformed steel;
Fig. 3 is the diagrammatic cross-section of Fig. 2 along MM face;
Fig. 4 is the one of the load-displacement curve of described load-displacement conversion equipment.
Embodiment
By reference to the accompanying drawings 1, a kind of load-displacement conversion equipment, is characterized in that mainly comprising: profile iron 1, lower bolster 2 and upper padding plate 3, and profile iron is between lower bolster and upper padding plate, and three is centrally located on same axis, and lower bolster 2 contacts with country rock 6; Described profile iron 1, has nonplanar structure, and its peripheral shape is circular, and three-dimensional shape is bowl-type, and its center is provided with hole S1, and anchor pole or anchor cable can pass from this hole; The vertical view of deformed steel as shown in Figure 2, along MM diagrammatic cross-section as shown in Figure 3; This profile iron has the normal direction bearing capacity of the greatest axis power being not less than anchor pole or anchor cable, and along with profile iron load increases, it is crushed gradually, has monotonically increasing relation between profile iron load and the displacement of generation; Described lower bolster 2 and upper padding plate 3 are surfacing, and pertusate steel plate is established at center, and anchor pole or anchor cable can pass from hole.
Application process of the present invention is:
1. mechanics and deformation characteristic test are carried out to described load-displacement conversion equipment; In normal direction, compression experiment is carried out to it by pressing machine, obtain the load-displacement curve of load-displacement conversion equipment as shown in Figure 4;
2. skyhook or anchor cable 4; Employing conventional method installs lower bolster 2, deformed steel 1 and upper padding plate 3 after the grouted part of anchor pole is fixed on anchor hole successively, makes anchor pole or anchor cable through their reserved holes, then clamp nut 5; Measure the vertical range L between upper padding plate upper surface and lower bolster upper surface;
3., after anchor pole or anchor cable start stressed F, anchor axial force is by nut retroaction on load-displacement conversion equipment, and the stressed rear generation of deformed steel is out of shape; Again measure the vertical range between upper padding plate upper surface and lower bolster upper surface, thus obtain the relative displacement of load-displacement conversion equipment pressurized generation;
The load-displacement curve of the load-displacement conversion equipment 4. 1. recorded according to step, and the relative displacement that 3. step records, conversion can obtain load-displacement conversion equipment load, and this load equals the axle power of anchor pole or anchor cable.
The above embodiment, the just one of the embodiment that the present invention is more preferably concrete, the usual change that those skilled in the art carries out within the scope of technical solution of the present invention and replacement all should be included in protection scope of the present invention.
Claims (4)
1. a load-displacement conversion equipment, is characterized in that mainly comprising: profile iron, lower bolster and upper padding plate, and profile iron is between lower bolster and upper padding plate, and three is centrally located on same axis; Described profile iron, there is nonplanar structure, its center is provided with hole, anchor pole or anchor cable can pass from this hole, this profile iron has the normal direction bearing capacity of the greatest axis power being not less than anchor pole or anchor cable, along with profile iron load increases, it is crushed gradually, has monotonically increasing relation between profile iron load and the displacement of generation; Described lower bolster and upper padding plate are surfacing, and pertusate steel plate is established at center, and anchor pole or anchor cable can pass from hole.
2. load-displacement conversion equipment according to claim 1, is characterized in that, the peripheral shape of described deformed steel is circular, and three-dimensional shape is bowl-type.
3. load-displacement conversion equipment according to claim 1, is characterized in that, the peripheral shape of described deformed steel is square, and three-dimensional shape is in " M " curved face type.
4. the application process of the load-displacement conversion equipment as described in as arbitrary in claim 1-3, is characterized in that comprising the following steps:
1. mechanics and deformation characteristic test are carried out to described load-displacement conversion equipment; In normal direction, compression experiment is carried out to it by pressing machine, obtain the load-displacement curve of load-displacement conversion equipment;
2. skyhook or anchor cable; Employing conventional method installs lower bolster, deformed steel and upper padding plate after the grouted part of anchor pole is fixed on anchor hole successively, makes anchor pole or anchor cable through their reserved holes, then clamp nut; Measure the vertical range between upper padding plate upper surface and lower bolster upper surface;
3. anchor pole or anchor cable start stressed after, anchor axial force is by nut retroaction on load-displacement conversion equipment, and stressed rear generations of deformed steel is out of shape; Again measure the vertical range between upper padding plate upper surface and lower bolster upper surface, thus obtain the relative displacement of load-displacement conversion equipment pressurized generation;
according to the load-displacement curve of the load-displacement conversion equipment that 1. step records, and the relative displacement that 3. step records, conversion can obtain load-displacement conversion equipment load, and this load equals the axle power of anchor pole or anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049728.8A CN104713668A (en) | 2015-02-01 | 2015-02-01 | Load-displacement converting device and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049728.8A CN104713668A (en) | 2015-02-01 | 2015-02-01 | Load-displacement converting device and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104713668A true CN104713668A (en) | 2015-06-17 |
Family
ID=53413189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510049728.8A Pending CN104713668A (en) | 2015-02-01 | 2015-02-01 | Load-displacement converting device and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104713668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523008A (en) * | 2016-12-23 | 2017-03-22 | 山东科技大学 | anchor rod stress measuring reading warning device and usage method |
| CN106768564A (en) * | 2017-03-06 | 2017-05-31 | 山东科技大学 | A kind of multisection type anchor rod force-measuring device and application method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1338885A1 (en) * | 1999-08-05 | 2003-08-27 | Kabushiki Kaisha Haradakuni | Lateral force-measuring device for a wheel |
| CN203452813U (en) * | 2013-05-23 | 2014-02-26 | 安徽理工大学 | Detector for pretightening force of anchor rod |
| CN104198097A (en) * | 2014-09-15 | 2014-12-10 | 太原理工大学 | Mining anchor rod axial-force monitoring device and monitoring method |
-
2015
- 2015-02-01 CN CN201510049728.8A patent/CN104713668A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1338885A1 (en) * | 1999-08-05 | 2003-08-27 | Kabushiki Kaisha Haradakuni | Lateral force-measuring device for a wheel |
| CN203452813U (en) * | 2013-05-23 | 2014-02-26 | 安徽理工大学 | Detector for pretightening force of anchor rod |
| CN104198097A (en) * | 2014-09-15 | 2014-12-10 | 太原理工大学 | Mining anchor rod axial-force monitoring device and monitoring method |
Non-Patent Citations (1)
| Title |
|---|
| 戈大钫等: "用静弯曲载荷-位移图评定工模具钢韧性的研究", 《研究与探索》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523008A (en) * | 2016-12-23 | 2017-03-22 | 山东科技大学 | anchor rod stress measuring reading warning device and usage method |
| CN106523008B (en) * | 2016-12-23 | 2023-07-21 | 山东科技大学 | Anchor rod stress measuring, reading and early warning device and use method |
| CN106768564A (en) * | 2017-03-06 | 2017-05-31 | 山东科技大学 | A kind of multisection type anchor rod force-measuring device and application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104697673A (en) | Method for testing axial force of anchor rod | |
| CN109357939B (en) | Shield air-pushing field test method | |
| CN102393330B (en) | Device for testing tangential stiffness property of joint surface | |
| CN104697674A (en) | Anchor rod stress testing device and application method thereof | |
| CN103822831B (en) | A kind of rigidity following loading framed structure | |
| CN109374413B (en) | On-site detection device suitable for bearing capacity of reinforced concrete beam and setting method thereof | |
| CN204435439U (en) | A kind of foundation pile static load detects uses Novel self-balanced load box | |
| CN204439249U (en) | Load-displacement conversion equipment | |
| CN103469769B (en) | Concrete material taking platform and anti-collision damping device | |
| CN104713668A (en) | Load-displacement converting device and application method thereof | |
| CN204479217U (en) | Rockbolt stress proving installation | |
| CN101823114A (en) | Double-post inclined type multi-pull-rod prestress machine frame of free forging hydrostatic press | |
| CN204023424U (en) | A kind of Hanging Basket You Ding back-pressure mechanism | |
| JP4783701B2 (en) | Bearing capacity test method and test equipment for underground buried pile | |
| CN201693117U (en) | Double-post inclined prestressed stand for free forging hydraulic press | |
| CN205295961U (en) | Bridge top pushes away displacement monitoring of construction pier and braced system | |
| CN104237010B (en) | Multifunctional concrete electric pole mechanical property detection platform | |
| CN103603361A (en) | Compressible device of deep foundation pit horizontal inner support | |
| CN105241648B (en) | Simulate the loading device and its application method of loess tunnel lock pin anchor tube termination stress | |
| CN204112240U (en) | The overall prepressing device of Hanging Basket | |
| CN206426071U (en) | A kind of tunneling shield section of jurisdiction storing unit | |
| CN204613032U (en) | A kind of test unit measuring the distortion of reactor fuel assemblies base | |
| CN204457829U (en) | Rockbolt stress state rapid evaluation device | |
| CN104790994B (en) | Rockbolt stress state rapid evaluation device and application process thereof | |
| CN111678807A (en) | Device and method for rock dynamic shear strength under pre-normal stress condition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |