CN111141593A - Anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device - Google Patents
Anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device Download PDFInfo
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- CN111141593A CN111141593A CN202010041785.2A CN202010041785A CN111141593A CN 111141593 A CN111141593 A CN 111141593A CN 202010041785 A CN202010041785 A CN 202010041785A CN 111141593 A CN111141593 A CN 111141593A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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Abstract
The invention discloses a device for detecting mechanical characteristics of an anchoring slurry-soil body interface of an anchor rod system, which comprises a model box, wherein a simulated soil body and a grouting hole mold are arranged in the model box, a grouting hole is formed by utilizing the grouting hole mold, anchoring slurry is poured for solidification, a rigid plate is arranged at the top of the solidified anchoring slurry, and the rigid plate is contacted with a displacement meter; the bottom of the grouting hole is provided with a bottom pressure sensor, and the bottom pressure sensor is connected with the jack; and a pressure sensing system is embedded in the simulated soil body. The invention detects the change rule of soil stress through a tubular film pressure sensing system, and indirectly monitors the mechanical characteristic rule of the anchoring slurry interface; the anchoring slurry prepared by different pore-forming shapes can be used for monitoring the mechanical characteristics of the anchoring slurry-soil body interface by pushing out destruction, and the anchoring characteristic of the force transmission rule of the anchoring slurry-soil body interface is explored; the device for detecting the anchoring slurry-soil body interface is simplified, and the monitoring and detecting precision of the force transmission characteristic of the anchoring slurry-soil body interface is improved.
Description
Technical Field
The invention relates to an anchor rod detection device, in particular to an anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device.
Background
The anchor rod technology is used as a common anchoring technology of geotechnical engineering, and the common damage forms of anchor rod damage mainly comprise the following three types: (1) the anchor rod body is broken due to insufficient strength; (2) breaking along the joint of the anchor rod body and the grouting body; (3) breaking along the joint of the grout body and the formation. Bolt destruction will seriously threaten the support safety of the underground space. At the present stage, a detection device and a sample preparation device based on a third damage form in the anchor rod damage forms, namely, the anchoring slurry-soil body interface pushing out damage mechanical characteristics are complex and heavy, the sample preparation device is low in efficiency, and the detection device needs to be developed by means of a large-scale universal testing machine.
Aiming at the problem that the destructive mechanical characteristics are pushed out from the anchoring slurry-soil body interface, the traditional detection equipment mainly utilizes an end force-displacement curve of the anchoring slurry to represent the mechanical characteristics of the whole interface of the anchoring section, cannot reflect the change rule of the internal mechanical characteristics of the anchoring slurry of the anchor rod, and has poor detection precision of the interface force-displacement curve/stress-strain curve of the anchoring slurry-soil body interface and the transmission rule of the anchoring slurry-soil body interface force.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an anchor slurry-soil body interface mechanical characteristic detection device of an anchor rod system, which detects the soil body stress change rule through a tubular film pressure sensing system, indirectly monitors the anchoring slurry interface mechanical characteristic rule and improves the anchoring slurry-soil body interface force transmission characteristic monitoring and detection precision.
The technical scheme is as follows: the device comprises a model box, wherein a simulated soil body and a grouting hole mold are placed in the model box, a grouting hole is formed by the grouting hole mold, anchoring slurry is poured for solidification, a rigid plate is placed on the top of the solidified anchoring slurry, and the rigid plate is in contact with a displacement meter; the bottom of the grouting hole is provided with a bottom pressure sensor, and the bottom pressure sensor is connected with the jack; the simulated soil body is embedded with a pressure sensing system.
The pressure sensing system comprises a tubular film pressure sensor and a tubular film pressure sensing system, wherein the tubular film pressure sensor is embedded in the simulated soil body and is connected with the tubular film pressure sensing system through a lead, and the tubular film pressure sensor is mainly used for detecting the horizontal thrust of anchoring slurry (particularly thread-shaped slurry and bamboo-shaped slurry) to the simulated soil body in the pushing-out process, so that the shear stress change characteristic of the slurry interface sliding is reflected.
The bottom pressure sensor adopts a vibrating wire type pressure box or a small and miniature force sensor, when the small and miniature force sensor is adopted, the small and miniature force sensor is placed on the rigid plate, and the rigid plate carrying the small and miniature force sensor is parallel and level with the lower cover plate of the model box, so that a filling hole bottom is provided, and the bottom pressure sensor is ensured to be straight and straight so as to ensure the measurement precision.
The grouting hole mold comprises a smooth surface grouting hole mold, a threaded surface grouting hole mold and a bamboo joint surface grouting hole mold, wherein the smooth surface grouting hole mold, the threaded surface grouting hole mold and the bamboo joint surface grouting hole mold are rotationally pulled out after simulated soil body maintenance is completed, molds made of different pore-forming shapes are utilized, the anchoring slurry-soil body interface shapes of the anchoring system are enriched, and an alternative scheme is provided for subsequently improving the bearing capacity of the anchoring slurry-soil body interface.
The jack is placed on the rigid reaction frame, an ideal platform is provided for pushing the jack, and the displacement measured by the displacement meter on the fixing device is ensured to be the displacement value of the anchoring grout as far as possible.
The jack is connected with a jack oil pump for supporting the loading of the jack.
The model box is connected with the fixing device and comprises an upper cover plate and a lower cover plate, the upper cover plate is connected with the upper cover plate of the fixing device, and the lower cover plate is fixed with the lower cover plate of the fixing device.
Holes are formed in the upper cover plate and the lower cover plate of the model box and the fixing device and used for placing a grouting hole mold.
The lower cover plate edge of the fixing device is fixed with the foundation.
The displacement meter is fixed on the fixing device and used for monitoring the displacement of the anchoring slurry.
Has the advantages that: the invention has the following advantages:
(1) the invention breaks through the mechanical characteristics of the integral interface of the anchoring section of the anchoring slurry-soil body interface detection device which can be represented only by the end force-displacement curve of the anchoring slurry, detects the change rule of the soil body stress by the tubular film pressure sensing system, indirectly monitors the mechanical characteristic rule of the anchoring slurry interface, provides the detection scheme of the interface force-displacement curve/stress-strain curve of the anchoring slurry-soil body interface of the anchor rod system, and finds out the ultimate bearing capacity of the anchoring slurry-soil body interface;
(2) the anchoring slurry prepared by different pore-forming shapes can be pushed out at an anchoring slurry-soil interface to monitor the destructive mechanical characteristics, and the anchoring characteristics of the anchoring slurry-soil interface force transmission rule of the anchor rod system are explored;
(3) the invention simplifies the anchoring slurry-soil body interface detection device of the anchoring system, and improves the monitoring and detection precision of the anchoring slurry-soil body interface force transmission characteristic of the anchoring system;
(4) aiming at the anchoring slurry-soil body interface push-out test, relevant parameters can be designed for anchor rod anchoring sections formed by different anchor rods and anchoring slurry.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
fig. 3 is a schematic view of a conventional mold for a grouting hole according to the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the invention comprises a model box 4 for simulating soil environment to form a grouting hole, wherein a simulated soil 6 is placed in the model box 4, and is mainly used for simulating soil characteristics of a soil anchor anchored body and forming a corresponding soil environment. The center of the simulated soil body 6 is provided with a grouting hole for pouring the anchoring grout 5, the anchoring grout 5 is poured into the grouting hole to form a grout body, the grouting hole is used for forming holes by a common grouting hole mould, and the hole forming shape can be a smooth surface, a threaded surface, a bamboo joint surface and the like. As shown in fig. 3, the grouting hole mold adopted by the invention comprises a smooth surface grouting hole mold i, a threaded surface grouting hole mold ii and a bamboo joint surface grouting hole mold iii. The outer ring of the smooth surface grouting hole mold I is a smooth surface 18, a low-carbon steel octagonal prism rod 21 is arranged at the top of the smooth surface 18, and the smooth surface is fixed when soil is filled and pulled out by the low-carbon steel octagonal prism rod 21 after the simulated soil is filled. The outer side of the thread surface grouting hole mold II is a thread surface 19, a manganese steel octagonal prism bar 22 is arranged at the top of the thread surface 19, the manganese steel octagonal prism bar 22 rotates to form a spiral surface, and the thread surface grouting hole mold II is pulled out by rotating the manganese steel octagonal prism bar 22. The outer side of the bamboo joint surface grouting hole mold III is provided with a bamboo joint surface 20, the top of the bamboo joint surface 20 is provided with a nickel steel octagonal prism bar 23, the top of the nickel steel octagonal prism bar 23 is provided with a control button 24, when the nickel steel octagonal prism bar 23 is rotated to form a bamboo joint surface, the control button 24 is pressed, and the protrusion on the surface of the mold is accommodated in the cavity and then is rotationally pulled out.
The outer side of the model box 4 is connected with the fixing device 7, the model box 4 and the fixing device 7 are both provided with an upper cover plate and a lower cover plate, the upper cover plate of the model box 4 is connected with the upper cover plate of the fixing device 7 through the fixing bolt 3, the lower cover plate of the model box 4 is connected with the lower cover plate of the fixing device 7 through the foundation bolt 8, and the edge of the lower cover plate of the fixing device 7 is fixed with the foundation 12 through the foundation bolt 8. Holes are formed in the upper cover plate and the lower cover plate of the model box 4 and the fixing device 7, the diameters of the holes are equal, and the diameters of the holes are the diameters of drilled holes of the simulated anchor rod system. The upper cover plates of the mold box 4 and the fixing device 7 can be detached.
The anchor thick liquid 5 pours into the slip casting hole solidification and forms the thick liquid body, and thick liquid body top is equipped with rigid plate 2, and rigid plate 2's diameter slightly is less than the trompil diameter of mold box, and mainly used guarantees the displacement precision that the anchor thick liquid of displacement meter 1 monitoring was released. The upper surface of the rigid plate 2 is in contact with the displacement meter 1, the displacement meter 1 is installed on an upper cover plate of the fixing device 7 and used for monitoring the displacement of the anchoring slurry, the displacement meter can be compared and analyzed with the displacement monitored by the jack 9, and invalid data in the anchoring slurry prepressing stage is deducted through the comparison and analysis. The bottom of the grouting hole is provided with a bottom pressure sensor 16, and when the bottom pressure sensor 16 is a vibrating wire type pressure box, the bottom pressure sensor can be directly placed at the bottom of the grouting hole and integrally solidified and sealed with the bottom of the slurry; when other small and miniature force sensors are selected, the bottom pressure sensor 16 is placed on the rigid plate, the bottom of the grouting hole is sealed through the rigid plate, the pressure sensor is placed in the center of the rigid plate and is tightly attached to the rigid plate, the rigid plate loaded with the sensor is flush with the lower cover plate of the model box 4, and the poured anchoring grout 5 can be fixed into a whole after being hardened. The bottom pressure sensor 16 is connected with the jack 9 and used for monitoring and checking a force monitoring system of the jack 9 to ensure the detection precision. The jack 9 is placed on the rigid reaction frame 11, the jack 9 can carry out force monitoring and displacement monitoring, and the whole body is erected on the rigid reaction frame 11 and is mainly used for pushing out anchoring slurry. The jack 9 is connected with a jack oil pump 10 for supporting the loading of the jack 9. The rigid reaction frame 11 is erected on a foundation 12 or other reliable rigid bodies, and mainly provides an ideal platform for the jack 9 to push, and ensures that the displacement measured by the displacement meter 1 on the fixing device 7 is the displacement value of the anchoring slurry as far as possible.
As shown in fig. 1, a circular tubular film pressure sensor 17 is arranged in the simulated soil body 6, a certain distance is arranged between the tubular film pressure sensor 17 and the edge of the anchoring grout 5, and the position of the tubular film pressure sensor is specifically determined according to the type of the used grout interface, the loading force and the soil body characteristics. The tubular membrane pressure sensor 17 is connected to the tubular membrane pressure sensing system 13 by a wire 15, and a wire duct 14 is provided on the same side of the mold box 4 as the fixture 7 for passing the wire 15. The tubular film pressure sensing system 13 is mainly used for detecting the horizontal thrust of the anchoring slurry (especially the thread-shaped slurry and the bamboo-shaped slurry) to the simulated soil body 6 in the pushing-out process, so as to reflect the shear stress change characteristic of the slurry interface sliding, and indirectly monitor the mechanical characteristic rule of the anchoring slurry interface.
The using method of the invention comprises the following steps:
the test is based on the relevant parameters of the designed anchor rod or the researched anchor rod system, and a model box, a fixing device and a grouting hole mold with corresponding apertures are selected. Before the device is tested, a rigid reaction frame, a fixing device (without an upper cover plate), a model box (without an upper cover plate) and a jack are assembled, a vibrating string type pressure box is generally selected, if other small and miniature force sensors are selected and placed on a rigid plate, the pressure sensor is placed in the center of the rigid plate and is closely attached to the rigid plate) and the jack are adjusted, so that the upper surface of the bottom pressure sensor is flush with the upper surface of the lower cover plate of the model box, a filling hole bottom is provided, the bottom pressure sensor is guaranteed to be straight so as to guarantee the measurement accuracy, an anchoring slurry-soil body interface grouting hole mold is installed on the bottom pressure sensor, and a corresponding simulated soil body and tubular film pressure sensing system is configured according to the research purpose. And (3) performing on-time maintenance according to the research purpose after the soil is filled, and rotating the anchoring slurry-soil interface grouting hole mold by using an octagonal wrench or a torque wrench after the maintenance is finished (wherein after the No. III mold rotates a corresponding octagonal prism to form a bamboo joint surface, pressing a control button to take the mold surface bulge into the cavity and rotationally pulling out the mold surface bulge). And pouring anchoring slurry and maintaining, after the maintenance is finished, fixing the upper cover plate of the model box and the upper cover plate of the fixing device through fixing bolts, placing a rigid plate at the top of the anchoring slurry, erecting a displacement meter, and finishing the assembly.
Compared with the conventional anchoring slurry-soil body interface mechanical characteristic detection device, the anchoring slurry-soil body interface mechanical characteristic detection device of the anchor rod system disclosed by the invention is more convenient, a sample preparation device is omitted, direct sample preparation in a test device is realized, and detection can be directly carried out without moving after sample preparation is finished. The invention respectively obtains anchoring slurry-soil mass interface force-displacement curve/stress-strain curve through an intelligent jack system, a bottom pressure sensor, a top displacement meter, a tubular film pressure sensing system and three sets of force-displacement/stress-strain measuring systems, the device can detect the anchoring slurry in the anchoring section through the tubular film pressure sensing system, and can indirectly and actually measure the mechanical characteristics of the internal interface of the anchoring slurry through the tubular film pressure sensing system, so that the device breaks through the defect that the traditional anchoring slurry-soil body interface detection device can only represent the mechanical characteristics of the integral interface of the anchoring section through the integral force-displacement curve of the anchoring slurry, simplifies the anchoring slurry-soil body interface detection device equipment, and improves the monitoring and detection precision of the force transmission characteristics of the anchoring slurry-soil body interface.
The pore-forming mould optimizes the anchoring slurry device, greatly reduces the sample preparation difficulty, enriches the anchoring slurry-soil interface forms by utilizing moulds prepared in different pore-forming shapes, and provides an alternative scheme for subsequently improving the bearing capacity of the anchoring slurry-soil interface.
Claims (10)
1. The anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device is characterized by comprising a model box (4), wherein a simulated soil body (6) and a grouting hole mold are placed in the model box (4), a grouting hole is formed by the grouting hole mold, anchoring slurry (5) is poured for solidification, a rigid plate (2) is placed at the top of the solidified anchoring slurry (5), and the rigid plate (2) is in contact with a displacement meter (1); the bottom of the grouting hole is provided with a bottom pressure sensor (16), and the bottom pressure sensor (16) is connected with the jack (9); the simulated soil body (6) is embedded with a pressure sensing system.
2. The anchoring slurry-soil body interface mechanical characteristic detection device of the anchor rod system as claimed in claim 1, wherein the pressure sensing system comprises a tubular membrane pressure sensor (17) and a tubular membrane pressure sensing system (13), and the tubular membrane pressure sensor (17) is embedded in the simulated soil body (6) and is connected with the tubular membrane pressure sensing system (13) through a lead (15).
3. The anchoring slurry-soil interface mechanical characteristic detection device of the anchor rod system as claimed in claim 1, wherein the bottom pressure sensor (16) is a vibrating wire type pressure box or a small and miniature force sensor, and when the small and miniature force sensor is adopted, the small and miniature force sensor is placed on the rigid plate, and the rigid plate carrying the small and miniature force sensor is flush with the lower cover plate of the model box (4).
4. The anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device of claim 1, wherein the grouting hole mold comprises a smooth surface grouting hole mold, a threaded surface grouting hole mold and a bamboo joint surface grouting hole mold, and the smooth surface grouting hole mold, the threaded surface grouting hole mold and the bamboo joint surface grouting hole mold are rotationally pulled out after the simulated soil body (6) is cured.
5. The anchoring slurry-soil interface mechanical characteristic detection device of the anchor rod system as claimed in claim 1, wherein the jack (9) is placed on a rigid reaction frame (11).
6. The anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device of claim 1 or 5, wherein a jack oil pump (10) is connected to the jack (9).
7. The anchoring slurry-soil interface mechanical characteristic detection device of the anchor rod system as claimed in claim 1, wherein the mold box (4) is connected with the fixing device (7), the mold box (4) comprises an upper cover plate and a lower cover plate, the upper cover plate is connected with the upper cover plate of the fixing device (7), and the lower cover plate is fixed with the lower cover plate of the fixing device (7).
8. The anchoring slurry-soil body interface mechanical characteristic detection device of the anchor rod system as claimed in claim 7, wherein holes are formed in the upper cover plate and the lower cover plate of the model box (4) and the fixing device (7).
9. The anchoring system anchoring slurry-soil interface mechanical characteristic detection device of claim 7, wherein the lower cover plate edge of the fixing device (7) is fixed with the foundation (12).
10. The anchoring slurry-soil body interface mechanical characteristic detection device of the anchor rod system as claimed in claim 1, wherein the displacement meter (1) is fixed on a fixing device (7).
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| CN202010041785.2A CN111141593B (en) | 2020-01-15 | 2020-01-15 | Anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638119A (en) * | 2020-07-23 | 2020-09-08 | 兰州理工大学 | Slurry-soil interface strain testing method for earthen site anchoring system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204530800U (en) * | 2015-04-21 | 2015-08-05 | 山东大学 | A kind of experimental rig being applicable to anchorage cable anchoring section creep properties |
| CN205562356U (en) * | 2016-04-29 | 2016-09-07 | 湖南科技大学 | Testing arrangement of characteristic is cohered at anchor interface |
| CN106644763A (en) * | 2016-12-28 | 2017-05-10 | 兰州大学 | Method and device for testing interfacial mechanical characteristics of earthen site anchoring slurry-substrate |
| CN107179396A (en) * | 2017-07-07 | 2017-09-19 | 东北大学 | Multifunctional built-up formula Geotechnical Engineering physics similar test system |
| CN107268691A (en) * | 2017-07-04 | 2017-10-20 | 山东大学 | A kind of test model and test method that lifting bearing capacity of pile foundation is starched suitable for after-teeming |
| CN206818541U (en) * | 2017-06-14 | 2017-12-29 | 西安工业大学 | A kind of jointed rock mass anchor pole dynamic loading experiment device |
| CN109297810A (en) * | 2018-07-17 | 2019-02-01 | 安徽理工大学 | A kind of simulation deep formation anchor rod drawing experimental rig and test method |
| CN109540788A (en) * | 2018-12-03 | 2019-03-29 | 湖南大学 | Simulation ground pressure acts on the test method and system of lower ground and anchoring body adhesive property |
-
2020
- 2020-01-15 CN CN202010041785.2A patent/CN111141593B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204530800U (en) * | 2015-04-21 | 2015-08-05 | 山东大学 | A kind of experimental rig being applicable to anchorage cable anchoring section creep properties |
| CN205562356U (en) * | 2016-04-29 | 2016-09-07 | 湖南科技大学 | Testing arrangement of characteristic is cohered at anchor interface |
| CN106644763A (en) * | 2016-12-28 | 2017-05-10 | 兰州大学 | Method and device for testing interfacial mechanical characteristics of earthen site anchoring slurry-substrate |
| CN206818541U (en) * | 2017-06-14 | 2017-12-29 | 西安工业大学 | A kind of jointed rock mass anchor pole dynamic loading experiment device |
| CN107268691A (en) * | 2017-07-04 | 2017-10-20 | 山东大学 | A kind of test model and test method that lifting bearing capacity of pile foundation is starched suitable for after-teeming |
| CN107179396A (en) * | 2017-07-07 | 2017-09-19 | 东北大学 | Multifunctional built-up formula Geotechnical Engineering physics similar test system |
| CN109297810A (en) * | 2018-07-17 | 2019-02-01 | 安徽理工大学 | A kind of simulation deep formation anchor rod drawing experimental rig and test method |
| CN109540788A (en) * | 2018-12-03 | 2019-03-29 | 湖南大学 | Simulation ground pressure acts on the test method and system of lower ground and anchoring body adhesive property |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638119A (en) * | 2020-07-23 | 2020-09-08 | 兰州理工大学 | Slurry-soil interface strain testing method for earthen site anchoring system |
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