AU2020103241A4 - Device for Testing Mechanical Characteristics of Anchor Cable and Inner Anchor Head, and Test Method Thereof - Google Patents
Device for Testing Mechanical Characteristics of Anchor Cable and Inner Anchor Head, and Test Method Thereof Download PDFInfo
- Publication number
- AU2020103241A4 AU2020103241A4 AU2020103241A AU2020103241A AU2020103241A4 AU 2020103241 A4 AU2020103241 A4 AU 2020103241A4 AU 2020103241 A AU2020103241 A AU 2020103241A AU 2020103241 A AU2020103241 A AU 2020103241A AU 2020103241 A4 AU2020103241 A4 AU 2020103241A4
- Authority
- AU
- Australia
- Prior art keywords
- simulated
- anchor cable
- anchor
- surrounding rock
- mortar
- 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.)
- Ceased
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 239000011435 rock Substances 0.000 claims abstract description 69
- 238000012544 monitoring process Methods 0.000 claims abstract description 57
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 53
- 238000004088 simulation Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000010146 3D printing Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 2
- 238000011160 research Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Piles And Underground Anchors (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a device for testing mechanical characteristics of an anchor
cable and an inner anchor head, and a test method thereof. The device includes an environment
simulation component, an anchor cable and anchor head simulation component and a stress
deformation monitoring component are disposed in the environment simulation component, the
environment simulation component includes a box body, the box body is filled with simulated
mortar and a simulated surrounding rock, and the anchor cable and anchor head simulation
component is disposed in the simulated surrounding rock. The test method includes the following
steps: Si. producing simulated surrounding rocks representing different strengths, and disposing
surrounding rock and mortar internal stress monitoring pressure boxes in the simulated surrounding
rocks; S2. disposing anchor cable axial force monitoring sensors at both ends of a simulated anchor
cable, and connecting the both ends of a simulated inner anchor head with the simulated anchor
cable and a jack respectively; S3. performing a grouting operation in the box body, and disposing
the surrounding rock and mortar internal stress monitoring pressure box; S4. describing surrounding
rock and mortar deformation monitoring auxiliary lines, and mounting a video monitor; and S5.
performing simulation by controlling the jack, and recording the data changes various instruments
in the tension process in real time.
1/2
108 102 202 A 304 301
105 104
B B
203
\t 201
107 103 303 A302 305
Fig. 1
305
304
302
106
109, 202
108
303
107
103
102
101
Fig. 2
Description
1/2
108 102 202 A 304 301 105 104
203
\t 201 107 103 303 A302 305
Fig. 1
305
304 302 106
109, 202 108 303 107 103 102
101
Fig. 2
Technical Field
The present invention relates to the field of geotechnical engineering, in particular to a
device for testing mechanical characteristics of an anchor cable and an inner anchor head, and a
test method thereof.
Background Art
An anchor cable is one of the most common and effective reinforcement measures in slope
reinforcement, an inner anchor head is the core member of an inner anchoring section of the
anchor cable, its mechanical characteristics determine the maximum pulling resistance that the
anchor cable can provide, therefore, the structural design and optimization of the inner anchor
head are effective means to improve the characteristics of the anchor cable. However, since the
anchor cable and the inner anchor head are both in the surrounding rock and mortar, it is not
easy to detect the mechanical characteristics of the anchor cable and the inner anchor head
during tension. At present, the lack of effective indoor test equipment and methods for testing
the mechanical characteristics of the anchor cable and the inner anchor head brings certain
obstacles to the development of the geotechnical engineering.
Summary of the Invention
The purpose of the present invention is to solve the above problems and provide a device
for testing mechanical characteristics of an anchor cable and an inner anchor head, which is
simple in structure and is convenient to operate, and a test method thereof.
In order to achieve the above purpose, the technical solution of the present invention is as
follows:
A device for testing mechanical characteristics of an anchor cable and an inner anchor head
includes an environment simulation component, an anchor cable and anchor head simulation
component and a stress deformation monitoring component are disposed in the environment
simulation component, the environment simulation component includes a box body, a cover
plate, simulated mortar and a simulated surrounding rock, the top end of the box body is open,
and the top end of the box body is connected with the cover plate, the cover plate is made of a
transparent material, the box body is filled with the simulated mortar and the simulated surrounding rock, the simulated surrounding rock is located in the middle of the simulated mortar, and the anchor cable and anchor head simulation component is disposed in the simulated surrounding rock; the anchor cable and anchor head simulation component includes a simulated anchor cable, a simulated inner anchor head and a jack, the volume of the simulated inner anchor head is a half of the volume of an actual anchor head along the axis, the simulated inner anchor head is placed in the simulated surrounding rock, one end of the simulated inner anchor head is connected with one end of the simulated anchor cable, and the other end of the simulated anchor cable passes through the simulated surrounding rock and the side wall of the box body in turn and then is connected with the jack; the stress deformation monitoring component includes anchor cable axial force monitoring sensors, surrounding rock and mortar deformation monitoring auxiliary lines, surrounding rock and mortar internal stress monitoring pressure boxes, a video monitoring frame and a video monitor; the anchor cable axial force monitoring sensors are disposed at both ends of the simulated anchor cable, the surrounding rock and mortar deformation monitoring auxiliary lines are disposed on the upper end face of the cover plate on the outer side of the simulated inner anchor head, a plurality of surrounding rock and mortar internal stress monitoring pressure boxes are provided and are equidistantly disposed in the simulated mortar and the simulated surrounding rock, the bottom end of the video monitoring frame is fixedly connected with the box body or the ground, the top end of the video monitoring frame is fixedly connected with the video monitor, and a camera of the video monitor faces the surrounding rock and mortar deformation monitoring auxiliary lines.
Further, the box body includes a bottom plate, a front side plate, a rear side plate, a left side
plate, and a right side plate, and the bottom plate, the front side plate, the rear side plate, the left
side plate and the right side plate are welded into a rectangular box body in a sealed state.
Further, one end of the jack is in contact with the left side plate, and the other end of which
is connected with one end of the simulated anchor cable.
Further, the cross section of the simulated surrounding rock is semicircular, and an anchor
hole for enabling the simulated anchor cable to pass through is formed in the simulated
surrounding rock.
Further, one end of the anchor cable is connected with one end of the anchor head close to
the right side plate, and the other end of the anchor cable passes through the anchor head, the simulated surrounding rock and the side wall of the box body in turn and then is connected with the jack. Further, the surrounding rock and mortar deformation monitoring auxiliary lines are two groups of scale lines drawn on the upper end face of the cover plate and perpendicular to each other, and each group of scale lines includes two scale lines that are parallel to each other. Further, the surrounding rock and mortar internal stress monitoring pressure boxes are arranged side by side on the front and rear sides below the anchor cable. Further, the simulated anchor cable is a steel strand. A test method of the device for testing mechanical characteristics of the anchor cable and the inner anchor head is characterized by including the following steps: Si. producing simulated surrounding rocks representing different strengths by adjusting the ratio of concrete, and disposing anchor holes of different diameters and the surrounding rock and mortar internal stress monitoring pressure boxes in the simulated surrounding rocks; S2. producing different types of simulated inner anchor heads and simulated anchor cables through 3D printing or steel casting, placing the simulated inner anchor head in the simulated surrounding rock, disposing the anchor cable axial force monitoring sensors at the both ends of the simulated anchor cable, connecting the simulated inner anchor head with one end of the simulated anchor cable, causing the other end of the simulated anchor cable to pass through the anchor hole and the left side plate, and then mounting the jack; S3. adjusting the ratio of cement mortar to produce simulated mortar of different strengths, performing a grouting operation in the box body, and disposing the surrounding rock and mortar internal stress monitoring pressure box in the simulated mortar; S4. describing the surrounding rock and mortar deformation monitoring auxiliary lines on the upper end face of the cover plate, and mounting the full-video monitoring frame and the video monitor; and S5. simulating the tension process of the anchor cable under different conditions by controlling the jack, and recording the data changes of the anchor cable axial force monitoring sensors and the deformation data of simulating mortar and the simulated surrounding rock in the tension process in real time, so as to obtain a mechanical characteristic result of the simulated anchor cable and the simulated inner anchor head.
Compared with the prior art, the present invention has the following advantages and
positive effects:
The present invention can realize the simulation of different surrounding rocks, mortar,
anchor holes and other occurrence environments through the environment simulation component,
and provide basic conditions for testing the mechanical characteristics of the anchor cable and
the inner anchor head; the present invention can realize the simulation of the tension process of
different inner anchor heads and anchor cables through the anchor cable and anchor head
simulation component; and the present invention can record the whole process of the
deformation and destruction of the mortar and the surrounding rock and the stress deformation
data information during the tension process of the anchor cable through the stress deformation
simulation component, and can realize the simulation of the tension processes of the anchor
cable under different conditions and obtain accurate stress deformation test data through the
cooperative work of the three components, which provides a research foundation for testing the
mechanical characteristics of the anchor cable and the inner anchor head, and brings convenience
to the research work in the geotechnical field.
Brief Description of the Drawings
To illustrate technical solutions in the embodiments of the present invention or in the prior
art more clearly, a brief introduction on the drawings which are needed in the description of the
embodiments or the prior art is given below. Apparently, the drawings in the description below
are merely some of the embodiments of the present invention, based on which other drawings
can be obtained by those of ordinary skill in the art without any creative effort.
Fig. 1 is a schematic structure diagram of the present invention;
Fig. 2 is an A-A section view of Fig. 1;
Fig. 3 is a B-B section view of Fig. 1.
Detailed Description of the Embodiments A clear and complete description of technical solutions in the embodiments of the present invention will be given below, in combination with the drawings in the embodiments of the present invention. Apparently, the embodiments described below are merely a part, but not all, of the embodiments of the present invention. All of other embodiments, obtained by those of ordinary skill in the art based on the embodiments of the present invention without any creative effort, and any made modifications, equivalent replacements, improvements and the like shall all fall into the protection scope of the present invention.
As shown in Fig. 1, Fig. 2 and Fig. 3, a device for testing mechanical characteristics of an
anchor cable and an inner anchor head includes an environment simulation component 1, an
anchor cable and anchor head simulation component 2 and a stress deformation monitoring
component 3.
The environment simulation component 1 includes a cuboid frame composed of a bottom
plate 101, a left side plate 105, a right side plate 104, a rear side plate 102, a front side plate 103
and a transparent observation cover plate 106, and the size of the frame can be automatically
determined according to the simulation environment. The left side plate 105 plays the role of
loading a counter-force, so the requirements on its rigidity are higher. In the present invention,
the left side plate 105 is designed as a 30mm thick steel plate; and in order to conveniently
observe the deformation characteristics of the surrounding rock and mortar materials during the
test, the transparent observation cover plate 106 is employed as the top plate. Both simulated
mortar 107 and a simulated surrounding rock 108 are realized by on-site pouring, according to
the characteristics of an axial symmetry model, a half of the actual situation is taken as the
research object during the pouring process, and it is feasible to simulate the actual conditions by
a half of the rock mass and mortar according to the characteristics of an axisymmetric object.
The anchor cable and anchor head simulation component 2 includes a simulated inner
anchor head 201, a simulated anchor cable 202, and a loading jack 203. For slope observation,
the simulated inner anchor head 201 is a half of the actual model, it is feasible to simulate the
actual conditions by a half of the anchor head according to the characteristics of the
axisymmetric object, and the simulated inner anchor head 201 can be made by 3D printing or
steel casting according to the design drawings; the simulated anchor cable 202 is a steel strand
used in the actual anchor cable, so the tension working condition of the anchor cable having two
axisymmetric steel strands is actually simulated; and the loading jack 203 is a hydraulic servo
control jack, which is convenient to control the tension load in the test process.
The stress deformation monitoring component 3 includes anchor cable axial force
monitoring sensors 301, surrounding rock and mortar deformation monitoring auxiliary lines 302,
surrounding rock and mortar internal stress monitoring pressure boxes 303, a video monitoring frame 304 and a video monitor 305. The surrounding rock and mortar deformation monitoring auxiliary lines 302 are two groups of auxiliary lines with scaleplates that are manually described in the vicinity of the simulated inner anchor head 201 and are perpendicular to each other, and the whole deformation process of the surrounding rock and the mortar during the tension process of the anchor cable can be obtained via video monitoring. The test steps of the test device are as follows: Si. producing simulated surrounding rocks 108 representing different strengths by adjusting the ratio of concrete, and simulating anchor holes 109 of different diameters in the production process by prefabricating round tubes; S2. producing different types of simulated inner anchor heads 201 through 3D printing or steel casting technology, connecting the simulated inner anchor heads 201 with steel strands through conventional anchor cable fixing equipment, and mounting the hydraulic servo control jack 203 to achieve the servo control of the tension of the anchor cable, so as to realize different loading modes; S3. adjusting the ratio of cement mortar to produce simulated mortar 107 of different strengths, and truly simulating the grouting process in a project by using the simulated mortar 107; S4. mounting the anchor cable axial force monitoring sensors 301, burying the surrounding rock and mortar internal stress monitoring pressure boxes 303, describing the surrounding rock and mortar deformation monitoring auxiliary lines 302, and mounting the video monitoring frame 304 and the video monitor 305 in corresponding positions during S Ito S3; and S5. simulating the tension process of the anchor cable under different conditions by controlling the servo jack, and recording the stress deformation characteristics of the anchor cable, the surrounding rock and the mortar in the tension process in real time, so as to provide a basic condition for testing the mechanical characteristics of the anchor cable and the anchor inner head.
Claims (9)
1. A device for testing mechanical characteristics of an anchor cable and an inner anchor
head, comprising an environment simulation component, an anchor cable and anchor head
simulation component and a stress deformation monitoring component are disposed in the
environment simulation component, wherein the environment simulation component comprises a
box body, a cover plate, simulated mortar and a simulated surrounding rock, the top end of the
box body is open, and the top end of the box body is connected with the cover plate, the cover
plate is made of a transparent material, the box body is filled with the simulated mortar and the
simulated surrounding rock, the simulated surrounding rock is located in the middle of the
simulated mortar, and the anchor cable and anchor head simulation component is disposed in the
simulated surrounding rock; the anchor cable and anchor head simulation component comprises
a simulated anchor cable, a simulated inner anchor head and a jack, the volume of the simulated
inner anchor head is a half of the volume of an actual anchor head along the axis, the simulated
inner anchor head is placed in the simulated surrounding rock, one end of the simulated inner
anchor head is connected with one end of the simulated anchor cable, and the other end of the
simulated anchor cable passes through the simulated surrounding rock and the side wall of the
box body in turn and then is connected with the jack; the stress deformation monitoring
component comprises anchor cable axial force monitoring sensors, surrounding rock and mortar
deformation monitoring auxiliary lines, surrounding rock and mortar internal stress monitoring
pressure boxes, a video monitoring frame and a video monitor; the anchor cable axial force
monitoring sensors are disposed at both ends of the simulated anchor cable, the surrounding rock
and mortar deformation monitoring auxiliary lines are disposed on the upper end face of the
cover plate on the outer side of the simulated inner anchor head, a plurality of surrounding rock
and mortar internal stress monitoring pressure boxes are provided and are equidistantly disposed
in the simulated mortar and the simulated surrounding rock, the bottom end of the video
monitoring frame is fixedly connected with the box body or the ground, the top end of the video
monitoring frame is fixedly connected with the video monitor, and a camera of the video monitor
faces the surrounding rock and mortar deformation monitoring auxiliary lines.
2. The device for testing mechanical characteristics of the anchor cable and the inner anchor
head according to claim 1, wherein the box body comprises a bottom plate, a front side plate, a rear side plate, a left side plate, and a right side plate, and the bottom plate, the front side plate, the rear side plate, the left side plate and the right side plate are welded into a rectangular box body in a sealed state.
3. The device for testing mechanical characteristics of the anchor cable and the inner anchor head according to claim 2, wherein one end of the jack is in contact with the left side plate, and the other end of which is connected with one end of the simulated anchor cable.
4. The device for testing mechanical characteristics of the anchor cable and the inner anchor head according to claim 3, wherein the cross section of the simulated surrounding rock is semicircular, and an anchor hole for enabling the simulated anchor cable to pass through is formed in the simulated surrounding rock.
5. The device for testing mechanical characteristics of the anchor cable and the inner anchor head according to claim 4, wherein one end of the anchor cable is connected with one end of the anchor head close to the right side plate, and the other end of the anchor cable passes through the anchor head, the simulated surrounding rock and the side wall of the box body in turn and then is connected with the jack.
6. The device for testing mechanical characteristics of the anchor cable and the inner anchor head according to claim 5, wherein the surrounding rock and mortar deformation monitoring auxiliary lines are two groups of scale lines drawn on the upper end face of the cover plate and perpendicular to each other, and each group of scale lines comprises two scale lines that are parallel to each other.
7. The device for testing mechanical characteristics of the anchor cable and the inner anchor head according to claim 6, wherein the surrounding rock and mortar internal stress monitoring pressure boxes are arranged side by side on the front and rear sides below the anchor cable.
8. The device for testing mechanical characteristics of the anchor cable and the inner anchor head according to claim 7, wherein the simulated anchor cable is a steel strand.
9. A test method of the device for testing mechanical characteristics of the anchor cable and the inner anchor head according to claim 8, characterized by comprising the following steps: Si. producing simulated surrounding rocks representing different strengths by adjusting the ratio of concrete, and disposing anchor holes of different diameters and the surrounding rock and mortar internal stress monitoring pressure boxes in the simulated surrounding rocks;
S2. producing different types of simulated inner anchor heads and simulated anchor cables through 3D printing or steel casting, placing the simulated inner anchor head in the simulated surrounding rock, disposing the anchor cable axial force monitoring sensors at the both ends of the simulated anchor cable, connecting the simulated inner anchor head with one end of the simulated anchor cable, causing the other end of the simulated anchor cable to pass through the anchor hole and the left side plate, and then mounting the jack; S3. adjusting the ratio of cement mortar to produce simulated mortar of different strengths, performing a grouting operation in the box body, and disposing the surrounding rock and mortar internal stress monitoring pressure box in the simulated mortar; S4. describing the surrounding rock and mortar deformation monitoring auxiliary lines on the upper end face of the cover plate, and mounting the full-video monitoring frame and the video monitor; and S5. simulating the tension process of the anchor cable under different conditions by controlling the jack, and recording the data changes of the anchor cable axial force monitoring sensors and the deformation data of simulating mortar and the simulated surrounding rock in the tension process in real time, so as to obtain a mechanical characteristic result of the simulated anchor cable and the simulated inner anchor head.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911189603.X | 2019-11-28 | ||
| CN201911189603.XA CN110749495A (en) | 2019-11-28 | 2019-11-28 | Device and method for testing mechanical properties of anchor cable and inner anchor head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020103241A4 true AU2020103241A4 (en) | 2021-01-14 |
Family
ID=69284862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020103241A Ceased AU2020103241A4 (en) | 2019-11-28 | 2020-11-04 | Device for Testing Mechanical Characteristics of Anchor Cable and Inner Anchor Head, and Test Method Thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110749495A (en) |
| AU (1) | AU2020103241A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117705577A (en) * | 2023-12-11 | 2024-03-15 | 山西黎霍高速公路有限公司 | Test device and method for simulating load bearing performance degradation of constant-resistance large-deformation anchor rod/cable end constant-resistance mechanism under tunnel fire disaster |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115307948B (en) * | 2022-08-15 | 2023-03-14 | 中铁西北科学研究院有限公司 | Indoor test device for BFRP anchor rod anchoring system performance research under power environment |
-
2019
- 2019-11-28 CN CN201911189603.XA patent/CN110749495A/en active Pending
-
2020
- 2020-11-04 AU AU2020103241A patent/AU2020103241A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117705577A (en) * | 2023-12-11 | 2024-03-15 | 山西黎霍高速公路有限公司 | Test device and method for simulating load bearing performance degradation of constant-resistance large-deformation anchor rod/cable end constant-resistance mechanism under tunnel fire disaster |
| CN117705577B (en) * | 2023-12-11 | 2024-05-28 | 山西黎霍高速公路有限公司 | Test device and method for simulating load bearing performance degradation of constant-resistance large-deformation anchor rod/cable end constant-resistance mechanism under tunnel fire disaster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110749495A (en) | 2020-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020103241A4 (en) | Device for Testing Mechanical Characteristics of Anchor Cable and Inner Anchor Head, and Test Method Thereof | |
| CN106638725B (en) | A kind of pile pile soil compaction effect test device and method | |
| CN107764492B (en) | A kind of model test method and system of research framework structural vibration response feature | |
| CN109868849B (en) | Pile-soil interaction visual test device and test method thereof | |
| CN110805076B (en) | Test device and method for simulating reinforcement of passive area of foundation pit | |
| CN108643247B (en) | Testing device and testing method for soil body reinforcement model at bottom of rectangular foundation pit in soft soil area | |
| CN103996348A (en) | Laboratory model test device for testing influence on operating tunnel from vertically-overlapped tunnel construction | |
| CN109537644B (en) | Karst pile foundation antidetonation test device based on small-size shaking table model | |
| CN107067947A (en) | A kind of ground measuring technology practice-training teaching comprehensive simulation test body | |
| CN110398429B (en) | Steel pipe concrete anti-seismic performance test device and test method considering influence of construction process | |
| CN114705386B (en) | Quasi-static force anti-seismic test device and test method for long tunnel structure | |
| CN109026106A (en) | The working condition simulation method and Work condition analogue testing stand of Bolt System | |
| CN207818052U (en) | A kind of teaching mode of tunnel-liner country rock interaction | |
| CN108918278A (en) | Pile foundation indoor model test method | |
| CN211927256U (en) | Enlarged footing stock crowd anchor test device | |
| CN109098161A (en) | A kind of layered rolling roadbed is respectively to shear wave speed test device and method | |
| CN211571804U (en) | Test device for simulating reinforcement of passive zone of foundation pit | |
| CN114563278A (en) | Novel tunnel three-dimensional model loading device and test method | |
| CN110763183A (en) | Model test device and test method for simulating concentrated stacking load in existing tunnel | |
| CN117233837B (en) | Experimental method for earthquake fault simulation based on geotechnical centrifuge platform | |
| CN117250654B (en) | Earthquake fault simulation system based on geotechnical centrifuge platform | |
| CN103226082A (en) | Test device simulating horizontal uniform load and test method | |
| CN111551356B (en) | Enlarged head anchor rod group anchor test device and test method thereof | |
| CN111579229A (en) | Test device for researching prestress transmission rule of anchor cable and working method thereof | |
| CN211122258U (en) | Mechanical property testing device for anchor cable and inner anchor head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |