CN112881180A - Device and method for rapidly detecting uplift bearing capacity of non-metal anchor rod - Google Patents
Device and method for rapidly detecting uplift bearing capacity of non-metal anchor rod Download PDFInfo
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- CN112881180A CN112881180A CN202110325634.4A CN202110325634A CN112881180A CN 112881180 A CN112881180 A CN 112881180A CN 202110325634 A CN202110325634 A CN 202110325634A CN 112881180 A CN112881180 A CN 112881180A
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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
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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
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention belongs to the technical field of foundation engineering tests and relates to a device and a method for rapidly detecting the uplift bearing capacity of a non-metal anchor rod, wherein a clamp and an inverted cone-shaped steel sleeve with built-in epoxy resin are anchored in a pure mechanical anchoring mode, so that the device is convenient to operate, quick to disassemble and recyclable; the method effectively avoids shearing damage of the non-metal reinforcement materials due to clamping, can read data in real time, and directly obtains a load-displacement curve through a computer after the data is processed by a demodulator so as to obtain a bearing capacity value; the anchor rod displacement measuring device is simple in structure, convenient to operate, high in measuring precision, capable of reflecting the real displacement condition of the anchor rod, high in bearing capacity detection speed, short in construction period and capable of saving manpower and financial resources.
Description
The technical field is as follows:
the invention belongs to the technical field of foundation engineering tests, and relates to a device and a method for rapidly detecting the uplift bearing capacity of a non-metal anchor rod.
Background art:
in recent years, with the utilization of underground structure space and the increasing of the buried depth of the building foundation, the anti-floating problem is also followed. The anti-floating anchor rod is welcomed because of the advantages of quick construction, small single-point stress, good anti-floating effect and the like. The glass fiber reinforced plastic anchor rod is used as a substitute of a reinforced plastic anchor rod due to the advantages of high tensile strength, environmental protection, good dielectric property and the like. Along with the application of the non-metal reinforcement material in the anti-floating engineering of the underground structure, the number of the non-metal reinforcement material is increased. In engineering acceptance, the anchor rod detection problem is increasingly prominent. Compare with traditional reinforcing bar stock, nonmetal stock shear behavior is relatively poor, uses traditional draw-off gear to carry out the bearing capacity when detecting, and the anchor head is destroyed by the extrusion very easily, and detection effect is not good. Although some researchers have developed nonmetal anchor rod detection devices at present, the detection device is complex, inconvenient to operate, and not accurate enough, so that the engineering requirements are difficult to meet. Therefore, a rapid detection device and a rapid detection method which are reliable in anchoring force, accurate in detection result and convenient and fast in detection equipment installation are urgently needed to solve the problems existing in the existing nonmetal anchor rod bearing capacity detection.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and provides a device and a method for rapidly detecting the pulling-resistant bearing capacity of a non-metal anchor rod aiming at the defects in the test acceptance and inspection process of the non-metal anti-floating anchor rod in the actual anti-floating engineering.
In order to achieve the purpose, the main structure of the device for rapidly detecting the uplift bearing capacity of the nonmetal anchor rod comprises an anchor rod hole, grouting bodies, the nonmetal anchor rod, a positioner, a first displacement sensor, a second displacement sensor, a cushion layer, a lattice type support, a counter-force beam, a first through steel plate, a second through steel plate, a third through steel plate, a jack, a pressure sensor, an anchoring clamp, a steel sleeve, an optical fiber, a demodulator and a computer; the non-metal anchor rod is vertically arranged in the center of the anchor rod hole, the grouting body is poured into the anchor rod hole, the positioner is bound on the non-metal anchor rod by adopting a steel wire and is symmetrically arranged at the upper part and the lower part of the non-metal anchor rod at intervals of 1.5-2 m, and the positioner is made of the same material as the non-metal anchor rod; the lattice type supports are symmetrically arranged on the cushion layers on two sides of the anchor rod hole, a distance of 300-plus-500 mm is reserved between the two lattice type supports and used for installing a first displacement sensor and a second displacement sensor, the first displacement sensor is symmetrically installed on two sides of the top of grouting body, the second displacement sensor is symmetrically installed on two sides of the root of the nonmetal anchor rod, the counter-force beam is installed above the lattice type supports in a buckling mode through a concave-convex groove and is subjected to spot welding to keep integrity; the first feed-through steel plate is welded between the counter-force beam and the jack, the second feed-through steel plate is welded between the jack and the pressure sensor, the third feed-through steel plate is welded between the pressure sensor and the anchoring clamp, holes which are communicated up and down are reserved in the first feed-through steel plate, the second feed-through steel plate and the third feed-through steel plate, the hole diameter is 40-70 mm, so that the non-metal anchor rod can smoothly pass through the holes in the test process, and a steel sleeve with a bulge on the outer surface is sleeved at the top of the non-metal anchor rod and forms an engagement structure with a groove on the inner surface of the anchoring clamp; one end of the adjusting instrument is connected with the computer, and the other end of the adjusting instrument is respectively connected with the first displacement sensor, the second displacement sensor and the pressure sensor through optical fibers.
The nonmetal anchor rod adopts a glass fiber reinforced polymer rib material (GFRP anchor rod) with the diameter of 25 mm, 28 mm or 32 mm.
The grouting body is prepared by adding 3-5% of micro-expanding agent on the basis of cement mortar, and is used for improving the bond stress between the grouting body and the nonmetal anchor rod.
The anchoring clamp adopts a steel three-piece gripping type structure, the first piece is connected with the second piece through the rotating support, the third piece is mechanically connected with the first piece, the third piece is mechanically connected with the second piece through high-strength bolts, and a conical structure with an annular groove is arranged inside the anchoring clamp.
The steel sleeve is of an inverted cone structure, the inner surface of the steel sleeve is provided with threads, and epoxy resin is arranged in the steel sleeve to prevent the nonmetal anchor rod from being damaged by stress in the test process.
The high-strength bolts are friction type high-strength bolts, the number of the high-strength bolts is increased or decreased according to the drawing force designed by the test, and the high-strength bolts are not less than two and are uniformly distributed up and down.
The demodulation instrument adopts a photoelectric integrated tester with the model number of DT318-FBG-8600, and during testing, the demodulation instrument, a computer and test equipment keep a safe distance.
The specific process for rapidly detecting the uplift bearing capacity of the non-metal anchor rod comprises the following steps:
step 1: installing a non-metal anchor rod in an anchor rod hole, starting to install test equipment after the grout body is maintained to the designed strength, sequentially erecting a lattice type support, a counter-force beam, a first through steel plate, a jack and a second through steel plate on a concrete cushion layer from bottom to top, and welding and fixing adjacent parts, so that the anchor rod is convenient to dismantle, and the welding mode is easy to spot weld;
step 2: coating synthetic resin in the steel sleeve, sleeving the non-metal anchor rod, clamping the steel sleeve by the first sheet and the second sheet in the anchoring clamp, positioning, installing the third sheet, and locking by adopting a high-strength bolt to ensure that the inner surface groove of the anchoring clamp is tightly engaged with the outer surface bulge of the steel sleeve;
and step 3: selecting a first displacement sensor, a second displacement sensor and a pressure sensor with the measuring range being 1.25-1.8 times of the predicted value, respectively arranging the first displacement sensor and the second displacement sensor at the root parts of the grouting body and the non-metal anchor rod body by using structural adhesive, arranging the pressure sensor between a second feed-through steel plate and a third feed-through steel plate, connecting a demodulator and a computer, and testing the working state of the sensors;
and 4, step 4: before loading, the demodulator is calibrated to zero, the test adopts a graded single-cycle loading mode, and the primary load is 0.1NkChecking the connection condition of each part, and then sequentially carrying out the inspection at 0.50Nk、0.75Nk、1.00Nk、1.25Nk、1.50NkLoading, stabilizing the pressure for 10 minutes at each stage, and unloading sequentially at 1.00Nk、0.50Nk、0NkThe pressure of each stage is stabilized for 2 minutes, wherein N iskDesigning axial pull-out resistance;
and 5: converting optical signals collected by the first displacement sensor, the second displacement sensor and the pressure sensor into electric signals through a demodulator, analyzing the electric signals through a computer, and reading a bearing capacity value;
step 6: after the test is finished, the mediation instrument and the computer are firstly dismantled, then all the parts are dismantled from top to bottom in sequence, oil stains on the surface of the parts are cleaned, and all the parts are stored in a classified mode.
Compared with the prior art, the invention has the following advantages: firstly, the anchoring clamp adopts a pure mechanical anchoring mode, is convenient to operate and quick to disassemble, and can be recycled; secondly, the inverted cone-shaped steel sleeve is adopted, and the epoxy resin is arranged in the inverted cone-shaped steel sleeve, so that the non-metal reinforcement is effectively prevented from being clamped and sheared and damaged; thirdly, data can be read in real time, and a computer directly obtains a load-displacement curve after the data are processed by a demodulator, so as to obtain a bearing capacity value; the anchor rod displacement measuring device is simple in structure, convenient to operate, high in measuring precision, capable of reflecting the real displacement condition of the anchor rod, high in bearing capacity detection speed, short in construction period and capable of saving manpower and financial resources.
Description of the drawings:
fig. 1 is a schematic structural view of a main body of the device for rapidly detecting the uplift bearing capacity of the nonmetallic anchor rod.
Fig. 2 is a schematic structural view of the anchoring device of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
Example (b):
the main structure of the device for rapidly detecting the pullout resistance and bearing capacity of the non-metal anchor rod in the embodiment comprises an anchor rod hole 1, grouting bodies 2, a non-metal anchor rod 3, a positioner 4, a first displacement sensor 5, a second displacement sensor 6, a cushion layer 7, a lattice type support 8, a counterforce beam 9, a first through steel plate 10, a second through steel plate 12, a third through steel plate 14, a jack 11, a pressure sensor 13, an anchoring clamp 16, a steel sleeve 17, an optical fiber 18, a demodulator 19 and a computer 20; the nonmetal anchor rod 3 is vertically arranged in the center of the anchor rod hole 1, the grouting body 2 is poured into the anchor rod hole 1, the positioner 4 is bound on the nonmetal anchor rod 3 by adopting a steel wire and is symmetrically arranged on the nonmetal anchor rod 3 at an interval of 1.5-2 m from top to bottom, and the positioner 4 is made of the same material as the nonmetal anchor rod 3; the lattice type supports 8 are symmetrically arranged on the cushion layer 7 on two sides of the anchor rod hole 1, a distance of 300 plus 500mm is reserved between the two lattice type supports 8 and used for installing the first displacement sensor 5 and the second displacement sensor 6, the first displacement sensor 5 is symmetrically arranged on two sides of the top of the grouting body 2, the second displacement sensor 6 is symmetrically arranged on two sides of the root of the non-metal anchor rod 3, the counter-force beam 9 is buckled above the lattice type supports 8 through a concave-convex groove and is subjected to spot welding to keep integrity; a first feed-through steel plate 10 is welded between the counter-force beam 9 and the jack 11, a second feed-through steel plate 12 is welded between the jack 11 and the pressure sensor 13, a third feed-through steel plate 14 is welded between the pressure sensor 13 and the anchoring fixture 16, holes which are communicated up and down are reserved in the first feed-through steel plate 10, the second feed-through steel plate 12 and the third feed-through steel plate 14, the hole diameter is 40 mm-70 mm so as to ensure that the non-metal anchor rod 3 can smoothly pass through in the test process, a steel sleeve 17 with a bulge on the outer surface is sleeved on the top of the non-metal anchor rod 3 and forms an engagement structure with a groove on the inner surface of the anchoring fixture 16; the adjuster 19 is connected at one end to the computer 20 and at the other end to the first displacement sensor 5, the second displacement sensor 6 and the pressure sensor 13, respectively, via the optical fibers 18.
The non-metal anchor 3 of the present embodiment uses a glass fiber reinforced polymer rib (GFRP anchor) having a diameter of 25, 28 or 32 mm.
The grouting body 2 is prepared by adding 3-5% of micro-expansion agent on the basis of cement mortar, and is used for improving the bond stress of the grouting body 2 and the nonmetal anchor rod 3.
In this embodiment, the anchoring clamp 16 is of a steel three-piece gripping type structure, the first piece 16-1 and the second piece 16-22 are connected by a rotating support 21, the third piece 16-3 and the first piece 16-1, and the third piece 16-3 and the second piece 16-2 are mechanically connected by high-strength bolts 15, and the anchoring clamp 16 is of a conical structure with an annular groove.
In the embodiment, the steel sleeve 17 is of an inverted cone structure, the inner surface of the steel sleeve is provided with threads, and epoxy resin is arranged in the steel sleeve 17 to prevent the nonmetal anchor rod 3 from being damaged by stress in the test process.
In this embodiment, high strength bolt 15 adopts friction type high strength bolt, and the number of high strength bolt 15 is according to the pulling force increase and decrease of experimental design, is no less than two, and upper and lower evenly distributed.
In this embodiment, the demodulator 19 adopts a photoelectric integrated tester with model number DT318-FBG-8600, and during the test, the demodulator 19 and the computer 20 keep a safe distance from the testing equipment.
The concrete process of this embodiment short-term test nonmetal stock resistance to plucking bearing capacity does:
step 1: the non-metal anchor rod 3 is installed in the anchor rod hole 1, after the grout body 2 is maintained to the designed strength, test equipment is installed, a lattice type support 8, a counter-force beam 9, a first through steel plate 10, a jack 11 and a second through steel plate 12 are sequentially erected on a concrete cushion 7 from bottom to top, adjacent parts are welded and fixed, and in order to facilitate disassembly, the welding mode is spot welding easily;
step 2: coating synthetic resin in the steel sleeve 17 and then sleeving the non-metal anchor rod 3, clamping the steel sleeve 17 by the first sheet 16-1 and the second sheet 16-2 in the anchoring clamp 16, positioning, mounting the third sheet 16-3, and locking by adopting a high-strength bolt 15 to ensure that the inner surface groove of the anchoring clamp 16 is tightly engaged with the outer surface protrusion of the steel sleeve 17;
and step 3: selecting a first displacement sensor 5, a second displacement sensor 6 and a pressure sensor 13 with the measuring range being 1.25-1.8 times of the predicted value, respectively arranging the first displacement sensor 5 and the second displacement sensor 6 at the root parts of the grouting body 2 and the non-metal anchor rod 3 by using structural adhesive, respectively arranging the pressure sensor 13 between a second feed-through steel plate 12 and a third feed-through steel plate 14, connecting a demodulator 19 and a computer 20, and testing the working state of the sensors;
and 4, step 4: before loading, the demodulator 19 is calibrated to zero, and the test adopts a grading single circulation loading mode. Primary load of 0.1Nk(design axial pull-out resistance), check the connection condition of each part, and then sequentially check the connection condition at 0.50Nk、0.75Nk、1.00Nk、1.25Nk、1.50NkLoading, stabilizing the pressure for 10 minutes at each stage, and unloading sequentially at 1.00Nk、0.50Nk、0NkCarrying out pressure stabilization for 2 minutes at each stage;
and 5: the optical signals collected by the first displacement sensor 5, the second displacement sensor 6 and the pressure sensor 13 are converted into electric signals through a demodulator 19, and the electric signals are analyzed by a computer 20 to read the numerical value of the bearing capacity;
step 6: after the test is finished, the mediation instrument 19 and the computer 29 are firstly dismantled, then all the parts are dismantled from top to bottom in sequence, oil stains on the surfaces of the parts are cleaned, and all the parts are classified and stored.
Claims (8)
1. A device for rapidly detecting the uplift bearing capacity of a non-metal anchor rod is characterized in that the main structure of the device comprises an anchor rod hole, grouting bodies, the non-metal anchor rod, a positioner, a first displacement sensor, a second displacement sensor, a cushion layer, a lattice type support, a counter-force beam, a first feed-through steel plate, a second feed-through steel plate, a third feed-through steel plate, a jack, a pressure sensor, an anchoring clamp, a steel sleeve, an optical fiber, a demodulator and a computer; the non-metal anchor rod is vertically arranged in the center of the anchor rod hole, the grouting body is poured into the anchor rod hole, the positioner is bound on the non-metal anchor rod by adopting a steel wire and is symmetrically arranged at the upper part and the lower part of the non-metal anchor rod at intervals of 1.5-2 m, and the positioner is made of the same material as the non-metal anchor rod; the lattice type supports are symmetrically arranged on the cushion layers on two sides of the anchor rod hole, a distance of 300-plus-500 mm is reserved between the two lattice type supports and used for installing a first displacement sensor and a second displacement sensor, the first displacement sensor is symmetrically installed on two sides of the top of grouting body, the second displacement sensor is symmetrically installed on two sides of the root of the nonmetal anchor rod, the counter-force beam is installed above the lattice type supports in a buckling mode through a concave-convex groove and is subjected to spot welding to keep integrity; the first feed-through steel plate is welded between the counter-force beam and the jack, the second feed-through steel plate is welded between the jack and the pressure sensor, the third feed-through steel plate is welded between the pressure sensor and the anchoring clamp, holes which are communicated up and down are reserved in the first feed-through steel plate, the second feed-through steel plate and the third feed-through steel plate, the hole diameter is 40-70 mm, so that the non-metal anchor rod can smoothly pass through the holes in the test process, and a steel sleeve with a bulge on the outer surface is sleeved at the top of the non-metal anchor rod and forms an engagement structure with a groove on the inner surface of the anchoring clamp; one end of the adjusting instrument is connected with the computer, and the other end of the adjusting instrument is respectively connected with the first displacement sensor, the second displacement sensor and the pressure sensor through optical fibers.
2. The device for rapidly detecting the uplift bearing capacity of the non-metal anchor rod according to claim 1, wherein the non-metal anchor rod is a glass fiber reinforced polymer rib material anchor rod with the diameter of 25 mm, 28 mm or 32 mm.
3. The device for rapidly detecting the uplift bearing capacity of the non-metal anchor rod according to claim 2, wherein the grouting body is prepared by adding 3-5% of a micro-expanding agent on the basis of cement mortar, and is used for improving the bond stress between the grouting body and the non-metal anchor rod.
4. The device for rapidly detecting the uplift bearing capacity of the nonmetal anchor rod according to claim 3, wherein the anchoring clamp is of a steel three-piece gripping type structure, the first piece and the second piece are connected through a rotating support, the third piece and the first piece and the third piece and the second piece are mechanically connected through high-strength bolts, and the anchoring clamp is of a conical structure with an annular groove.
5. The device for rapidly detecting the uplift bearing capacity of the nonmetal anchor rod according to claim 4, wherein the steel sleeve is of an inverted cone structure, threads are arranged on the inner surface of the steel sleeve, and epoxy resin is arranged in the steel sleeve to prevent the nonmetal anchor rod from being damaged by stress in the test process.
6. The device for rapidly detecting the uplift bearing capacity of the nonmetal anchor rod according to claim 5, wherein the high-strength bolts are friction type high-strength bolts, the number of the high-strength bolts is not less than two, and the high-strength bolts are uniformly distributed up and down according to the pulling force of the experimental design.
7. The device for rapidly detecting the pulling resistance and bearing capacity of the non-metal anchor rod according to claim 6 is characterized in that the demodulation instrument is a photoelectric integrated tester with the model number of DT318-FBG-8600, and during testing, the demodulation instrument, a computer and testing equipment keep a safe distance.
8. A method for rapidly detecting the pulling resistance bearing capacity of a non-metal anchor rod by adopting the device of claim 7 is characterized by comprising the following specific steps:
step 1: installing a non-metal anchor rod in an anchor rod hole, starting to install test equipment after the grout body is maintained to the designed strength, sequentially erecting a lattice type support, a counter-force beam, a first through steel plate, a jack and a second through steel plate on a concrete cushion layer from bottom to top, and welding and fixing adjacent parts, so that the anchor rod is convenient to dismantle, and the welding mode is easy to spot weld;
step 2: coating synthetic resin in the steel sleeve, sleeving the non-metal anchor rod, clamping the steel sleeve by the first sheet and the second sheet in the anchoring clamp, positioning, installing the third sheet, and locking by adopting a high-strength bolt to ensure that the inner surface groove of the anchoring clamp is tightly engaged with the outer surface bulge of the steel sleeve;
and step 3: selecting a first displacement sensor, a second displacement sensor and a pressure sensor with the measuring range being 1.25-1.8 times of the predicted value, respectively arranging the first displacement sensor and the second displacement sensor at the root parts of the grouting body and the non-metal anchor rod body by using structural adhesive, arranging the pressure sensor between a second feed-through steel plate and a third feed-through steel plate, connecting a demodulator and a computer, and testing the working state of the sensors;
and 4, step 4: before loading, the demodulator is calibrated to zero, the test adopts a graded single-cycle loading mode, and the primary load is 0.1NkChecking the connection condition of each part, and then sequentially carrying out the inspection at 0.50Nk、0.75Nk、1.00Nk、1.25Nk、1.50NkLoading, stabilizing the pressure for 10 minutes at each stage, and unloading sequentially at 1.00Nk、0.50Nk、0NkThe pressure of each stage is stabilized for 2 minutes, wherein N iskDesigning axial pull-out resistance;
and 5: converting optical signals collected by the first displacement sensor, the second displacement sensor and the pressure sensor into electric signals through a demodulator, analyzing the electric signals through a computer, and reading a bearing capacity value;
step 6: after the test is finished, the mediation instrument and the computer are firstly dismantled, then all the parts are dismantled from top to bottom in sequence, oil stains on the surface of the parts are cleaned, and all the parts are stored in a classified mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110325634.4A CN112881180A (en) | 2021-03-26 | 2021-03-26 | Device and method for rapidly detecting uplift bearing capacity of non-metal anchor rod |
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| CN202110325634.4A CN112881180A (en) | 2021-03-26 | 2021-03-26 | Device and method for rapidly detecting uplift bearing capacity of non-metal anchor rod |
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| 白晓宇，刘雪颖，张明义，井德胜，郑晨: "GFRP 筋及钢筋抗浮锚杆承载特性现场试验及荷载-位移模型", 《复合材料学报》 * |
| 重庆大学 同济大学 哈尔滨工业大学, 中国建材工业出版社 * |
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