CN215812788U - Stress balance shield grouting test device - Google Patents
Stress balance shield grouting test device Download PDFInfo
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- CN215812788U CN215812788U CN202122012527.4U CN202122012527U CN215812788U CN 215812788 U CN215812788 U CN 215812788U CN 202122012527 U CN202122012527 U CN 202122012527U CN 215812788 U CN215812788 U CN 215812788U
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Abstract
The utility model relates to the technical field of shield grouting tests, in particular to a shield grouting test device with balanced stress, which comprises an inner cylinder, an outer cylinder, a support structure, an elastic component and a monitoring device, wherein a gap is formed between the inner cylinder and the outer cylinder, grouting liquid is filled into the gap, the support structure is arranged in the inner cylinder in a penetrating way, and two ends of the support structure are fixed; one end of the elastic component is connected with the inner wall of the inner cylinder, and the other end of the elastic component is connected with the support structure; the monitoring device can be arranged between the elastic component and the support structure, and also can be arranged between the elastic component and the inner wall of the inner barrel, and is used for detecting the elasticity of the elastic component. The shield grouting test device with balanced stress keeps the inner cylinder in a horizontal stable state through the elastic component, and the elastic action of the elastic component prevents the inner cylinder from floating up or inclining under the action of slurry in the grouting process, so that collision with the inner wall of the outer cylinder is avoided. Meanwhile, the monitoring device monitors the numerical change of the stress of the inner barrel, and further research is facilitated.
Description
Technical Field
The utility model relates to the technical field of shield grouting tests, in particular to a shield grouting test device with balanced stress.
Background
The shield test device comprises an inner cylinder and an outer cylinder sleeved on the outer side of the inner cylinder, grouting is needed to be conducted into a gap formed between the inner cylinder and the outer cylinder in order to avoid displacement of the inner cylinder, and due to grouting holes and grout distribution, grout is unevenly distributed on the periphery of the inner cylinder. In addition, the inner cylinder is pushed by the floating force from the slurry to generate displacement in the test process, so that the inner cylinder has a certain displacement. Considering the uneven grouting in the test, the inner cylinder can be inclined while floating, and can collide with the inner wall of the outer cylinder when floating or inclined displacement is large.
In addition, in the prior art, an operator does not know the stress condition and the floating and inclining conditions of the inner barrel, only works through engineering test experience, and develops construction schemes such as stress change of the inner barrel in the grouting process, and the like, which are mostly based on engineering practical experience and lack of certain theoretical scientific guidance, so that the inner barrel and the outer barrel can collide.
Therefore, it is highly desirable to provide a shield grouting test device with balanced stress, which can prevent the inner cylinder from floating and inclining and can monitor the stress condition of the inner cylinder.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a shield grouting test device with balanced stress, which can prevent an inner cylinder from floating and inclining and can monitor the stress condition of the inner cylinder.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a balanced shield of atress constructs slip casting test device, includes inner tube and urceolus, the urceolus cover is established the outside of inner tube, and with form the clearance between the inner tube, the clearance intussuseption is filled with the thick liquid, balanced shield of atress constructs slip casting test device still includes:
the support structure is arranged in the inner barrel in a penetrating manner, and two ends of the support structure are fixed;
one end of the elastic component is connected with the inner wall of the inner barrel, and the other end of the elastic component is connected with the support structure; and
a monitoring device disposed between the elastic component and the support structure and/or between the elastic component and an inner wall of the inner barrel, the monitoring device configured to monitor an elastic force of the elastic component.
Before a grouting test, an operator calculates the stress condition of the inner barrel in the early stage, and selects an elastic component with a proper elastic modulus to install so that the inner barrel is in the central position and is kept in a horizontal state. In the grouting process, the elastic force of the elastic component is utilized to prevent the inner barrel from floating upwards or inclining under the action of the slurry, and further avoid collision with the inner wall of the outer barrel. Meanwhile, the numerical value change of the stress of the inner cylinder is monitored through a monitoring device connected with the elastic component, so that the stress condition of the inner cylinder is analyzed.
Preferably, the elastic assembly comprises a plurality of elastic members, and the plurality of elastic members are arranged along the circumferential direction of the support structure.
A plurality of elastic pieces are arranged in the circumferential direction of the support structure, and the elastic force of the elastic pieces is used for ensuring that the inner barrel is in a balanced state. In the grouting process, the elastic pieces are mutually cooperated, so that the stress in one direction is overlarge, and the elastic force in other directions can be limited, thereby effectively avoiding the inner barrel from floating or inclining under the buoyancy action of slurry, and further avoiding the collision between the inner barrel and the outer barrel.
Preferably, a plurality of the elastic members are uniformly arranged along the circumferential direction of the support structure.
The elastic pieces are uniformly arranged in the circumferential direction of the support structure, so that the inner cylinder can be kept balanced under the support of the elastic pieces around.
Preferably, the elastic assembly comprises four elastic members, an included angle between two adjacent elastic members is 90 °, two of the four elastic members are arranged in a vertical direction, and the other two of the four elastic members are arranged in a horizontal direction.
Set up four elastic components through vertical and two directions of level in the supporting structure periphery to ensure that two upper and lower elastic components are in vertical state, control two elastic components and be in the horizontality, when guaranteeing elastic component elastic deformation volume, the elastic component is in tensile state, and fixed in coordination with central support both ends, can realize with this that the inner tube reaches balanced state under the contactless hole wall condition, thereby avoid the inner tube slope to lead to the inner tube direct contact urceolus, cause not accord with engineering actual conditions. Therefore, four elastic pieces are arranged on the periphery of the support structure in the vertical direction and the horizontal direction, so that the accuracy of test data can be improved, and the gap between the inner cylinder and the outer cylinder is completely filled with slurry.
As a preferable scheme, the elastic assemblies are arranged in multiple groups, and the multiple groups of elastic assemblies are arranged at intervals along the axial direction of the support structure.
Because the total length of the shield grouting test device with balanced stress is about 900mm, a plurality of groups of elastic components are arranged at intervals along the axial direction of the support structure, so that the inner cylinder can be kept horizontal in the length direction, and the inner cylinder is prevented from inclining.
As a preferred aspect, the support structure comprises:
the central support piece is arranged in the center of the inner cylinder and extends along the axial direction of the inner cylinder, and two ends of the central support piece are fixed; and
the mounting bracket is sleeved on the outer side of the central support piece, and the monitoring device is arranged between the mounting bracket and the elastic component.
Divide into two parts of central support piece and installing support with the supporting structure, wherein, the better structure of intensity is selected for use to central support frame, and is fixed through both ends, is favorable to guaranteeing shield structure test device overall stability. The installation support and the monitoring device are matched, so that the installation of the elastic part or the monitoring device is facilitated, the cost is reduced, and the operation is convenient.
As a preferred scheme, the stress-balanced shield grouting test device further comprises:
and the two ends of the support structure are supported on the support frame.
The supporting frames are arranged at the two ends of the shield grouting test device with balanced stress and used for supporting the supporting frame devices, so that the shield grouting test device with balanced stress is always in a stable state in the horizontal direction, and the accuracy of an experimental structure is improved.
As a preferable scheme, a force bearing device is arranged on the inner surface of the inner cylinder.
In the process of injecting the slurry, the inner cylinder is subjected to external forces in different directions such as slurry buoyancy and the like, so that the force bearing device is arranged on the inner surface of the inner cylinder, and the strength of the inner cylinder is increased.
As a preferable scheme, the force bearing device comprises:
the axial force bearing assemblies are arranged on the inner surface of the inner barrel and are arranged at intervals along the circumferential direction of the inner surface of the inner barrel, and the axial force bearing assemblies extend along the axial direction of the inner barrel.
In the initial stage of injecting the slurry, the slurry flows slowly and has viscosity, so that the stress on the outer surface of the inner cylinder is uneven; when the injection amount of the slurry is increased to a certain degree, the slurry generates buoyancy on the inner barrel, so that the inner barrel moves upwards, and the buoyancy at different positions of the inner barrel is different and is easy to incline. In order to avoid the deformation of the inner cylinder caused by the action of external force in the axial direction of the inner cylinder, a plurality of axial force bearing assemblies are arranged at intervals along the circumferential direction of the inner surface of the inner cylinder and serve as main force bearing components in the axial direction of the inner cylinder, so that the strength of the inner cylinder is increased.
As a preferable scheme, the force bearing device further comprises:
and the net-shaped force bearing assemblies are arranged between two adjacent axial force bearing assemblies and are respectively connected with the inner surface of the inner cylinder and the adjacent axial force bearing assemblies.
The net bearing component is connected with the axial bearing component and then connected with the inner surface of the inner cylinder, so that the connection strength of the axial bearing component and the inner cylinder is increased, and meanwhile, the net bearing component is used as an auxiliary bearing component and also has the function of increasing the strength of the inner cylinder.
The utility model has the beneficial effects that:
the shield grouting test device with balanced stress comprises an inner cylinder, an outer cylinder, a support structure, an elastic component and a monitoring device, wherein the inner cylinder simulates a duct piece, the outer cylinder simulates a soil layer structure, a gap is formed between the inner cylinder and the outer cylinder, grouting liquid is filled into the gap, the support structure is arranged in the inner cylinder in a penetrating mode, and two ends of the support structure are fixed; one end of the elastic component is connected with the inner wall of the inner cylinder, and the other end of the elastic component is connected with the support structure; the monitoring device can be arranged between the elastic component and the support structure, and also can be arranged between the elastic component and the inner wall of the inner barrel, and is used for detecting the elasticity of the elastic component.
Before a grouting test, an operator calculates the stress condition of the inner barrel in the early stage, selects an elastic component with a proper elastic modulus to install, and keeps the inner barrel at the central horizontal position. In the grouting process, the elastic force of the elastic component is utilized to prevent the inner barrel from floating upwards or inclining under the action of the slurry, and further avoid collision with the inner wall of the outer barrel. Meanwhile, the numerical value change of the stress of the inner cylinder is monitored through a monitoring device connected with the elastic component, so that the stress condition of the inner cylinder is analyzed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a front view of a shield grouting test device with balanced stress according to an embodiment of the present invention;
fig. 2 is a cross-sectional view taken at a-a in fig. 1.
The figures are labeled as follows:
1-an inner cylinder; 2-outer cylinder; 21-clearance; 3-a scaffold structure; 31-a central support; 32-a mounting bracket; 4-an elastic member; 5-a monitoring device; 6-force bearing device; 61-axial force bearing component; 62-net force bearing component.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for convenience of description, only the structures related to the present invention are shown in the drawings, not the full structure.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be structurally related or interoperable between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1 and fig. 2, the present embodiment provides a shield grouting test device with balanced stress, which includes an inner cylinder 1, an outer cylinder 2, a support structure 3, an elastic component and a monitoring device 5, wherein the inner cylinder 1 simulates a duct piece, the outer cylinder 2 simulates a soil layer structure, a gap 21 is formed between the inner cylinder 1 and the outer cylinder 2, a grouting liquid is filled into the gap 21, the support structure 3 is inserted into the inner cylinder 1, and both ends are fixed; one end of the elastic component is connected with the inner wall of the inner cylinder 1, and the other end is connected with the support structure 3. In this embodiment, the monitoring device 5 is disposed between the elastic component and the supporting structure 3, and is used for monitoring the stress variation condition of the inner barrel 1. The inner surface of the inner cylinder 1 is reserved with a mounting position corresponding to the elastic component, and the mounting method can adopt a hook or threaded connection and the like. Specifically, the inner cylinder 1 can be made of a steel plate with the thickness of 2mm, the length of 900mm and the diameter of 1 m.
In other embodiments, the monitoring device 5 can also be disposed between the elastic component and the inner wall of the inner barrel 1 for detecting the elastic force of the elastic component 4. The mounting position corresponding to the elastic component is reserved on the outer surface of the support structure 3, and the mounting method can adopt hooks or threaded connection and the like.
Before a grouting test, an operator calculates the stress condition of the inner barrel 1 in the early stage, selects an elastic component with a proper elastic modulus to install, and keeps the inner barrel 1 at the central horizontal position. In the grouting process, the elastic force of the elastic component is utilized to prevent the inner cylinder 1 from floating upwards or inclining under the action of the grout, and further avoid collision with the inner wall of the outer cylinder 2. Meanwhile, the stress condition of the inner barrel 1 is monitored through the monitoring device 5 connected with the elastic component, and the monitoring device 5 monitors the stress data of the inner barrel 1 and is used for analyzing the stress condition of the inner barrel 1.
As a preferred option, as shown in fig. 1 and 2, the elastic assembly comprises a plurality of elastic members 4, the plurality of elastic members 4 being arranged along the circumference of the stent structure 3. By arranging a plurality of elastic members 4 in the circumferential direction of the support structure 3, the elastic force of the elastic members 4 is utilized to ensure that the inner cylinder 1 is in a balanced state. In the grouting process, the elastic pieces 4 are mutually cooperated, so that the stress in one direction is overlarge, and the elastic force in other directions can be used for compensating, thereby effectively avoiding the inner cylinder 1 from floating or inclining under the buoyancy action of slurry, and further avoiding the collision between the inner cylinder 1 and the outer cylinder 2. Specifically, the elastic member 4 may be a spring, which is low in cost and easy to purchase.
As a preferred scheme, a plurality of elastic components 4 are evenly arranged along the circumferential direction of the support structure 3, so that the inner cylinder 1 is more favorably ensured to be balanced under the support of the plurality of elastic components 4 on the periphery.
As a preferable mode, as shown in fig. 1 and 2, the elastic assembly includes four elastic members 4, an included angle between two adjacent elastic members 4 is 90 °, two elastic members 4 of the four elastic members 4 are disposed in a vertical direction, and the other two elastic members 4 of the four elastic members 4 are disposed in a horizontal direction.
Set up four elastic component 4 in the 3 peripheries of supporting structure through vertical and two directions of level to ensure that two elastic component 4 are in vertical state about, two elastic component 4 are in the horizontality, when guaranteeing elastic component 4 elastic deformation volume, elastic component 4 is in tensile state, and it is fixed in coordination with central support both ends, with this can realize that inner tube 1 reaches balanced state under the contactless hole wall condition, thereby avoid the slope of inner tube 1 to lead to 1 direct contact urceolus 2 of inner tube, cause and not accord with engineering actual conditions. Therefore, four elastic pieces 4 are arranged on the periphery of the support structure 3 in the vertical direction and the horizontal direction, so that the accuracy of test data can be improved, and the gap 21 between the inner cylinder 1 and the outer cylinder 2 is completely filled with slurry.
Preferably, as shown in fig. 1 and 2, the elastic members are provided in plural sets, and the plural sets of elastic members are spaced apart from each other in the axial direction of the supporting structure 3. Specifically, the length of the inner cylinder 1 of the shield grouting test device with balanced stress is 900mm, and the elastic components are sequentially arranged at intervals of 100mm, 225mm and 225mm from the leftmost end, so that a plurality of groups of elastic components are arranged at intervals along the axial direction of the support structure 3, the inner cylinder 1 can be kept horizontal in the length direction, and the inner cylinder 1 can be prevented from inclining.
As a preferable mode, as shown in fig. 1 and 2, the support structure 3 includes a center support 31 and a mounting support 32, the center support 31 is disposed at the center of the inner cylinder 1 and extends in the axial direction of the inner cylinder 1, and both ends of the center support 31 are fixed; the mounting bracket 32 is a cylindrical structure, the mounting bracket 32 is sleeved on the outer side of the central support member 31, the inner wall of the mounting bracket 32 is abutted to the central support member 31, and the monitoring device 5 is arranged between the mounting bracket 32 and the elastic component. Specifically, the length of the central support is about 2.5m, 160 h-beams can be adopted, and the mounting support 32 sleeved on the h-beams can be made of circular steel with the thickness of 10mm, the width of 100mm and the outer diameter of 200mm, so that the mounting support 32 is fixed between the central support and the monitoring device 5. Since the mounting bracket 32 is used to mount the monitoring device 5, a width of 100mm may be sufficient for the application.
Divide into central support piece 31 and two parts of installing support 32 with supporting structure 3, wherein, central support piece 31 chooses the better structure of intensity for use, and is fixed through both ends, is favorable to guaranteeing shield structure test device overall stability. The mounting bracket 32 and the monitoring device 5 are matched to avoid being integrally arranged in the length direction of the central support member 31, so that the mounting of the elastic member 4 or the monitoring device 5 is facilitated, the cost is reduced, and the operation is convenient.
As a preferred scheme, the shield grouting test device with balanced stress further comprises a support frame, and two ends of the support structure 3 are supported on the support frame. The support frames are arranged at the two ends of the shield grouting test device with balanced stress and used for supporting the support structure 3, so that the shield grouting test device with balanced stress is always in a horizontal state and is kept stable, and the accuracy of a test result is improved.
As a preferable scheme, as shown in fig. 1 and 2, a force bearing device 6 is arranged on the inner surface of the inner cylinder 1. In the process of injecting the slurry, the inner cylinder 1 is subjected to external forces from different directions such as slurry buoyancy and the like, so the force bearing device 6 is arranged on the inner surface of the inner cylinder 1, and the strength of the inner cylinder 1 is increased.
In the initial stage of injecting the slurry, the slurry flows slowly and has viscosity, so that the external surface of the inner cylinder 1 is stressed unevenly; when the injection amount of the slurry is increased, the slurry generates buoyancy on the inner cylinder 1, so that the inner cylinder 1 moves upwards, and the buoyancy at different positions of the inner cylinder 1 is different and is easy to incline. In order to avoid the deformation of the inner cylinder 1 caused by the uneven action of the external force in the axial direction of the inner cylinder 1, as shown in fig. 1 and fig. 2, the force bearing device 6 comprises a plurality of axial force bearing assemblies 61, the plurality of axial force bearing assemblies 61 are arranged on the inner surface of the inner cylinder 1, the plurality of axial force bearing assemblies 61 are arranged at intervals along the circumferential direction of the inner surface of the inner cylinder 1, the axial force bearing assemblies 61 extend along the axial direction of the inner cylinder 1, and the axial force bearing assemblies 61 serve as main force bearing components in the axial direction of the inner cylinder 1, so that the strength of the inner cylinder 1 is ensured, and the deformation of the inner cylinder 1 is avoided.
Specifically, the axial force-bearing component 61 can be 50 angle steels, every two 50 angle steels of the axial force-bearing component 61 form a group, every two 50 angle steels are welded in an opposite mode, a group is arranged on the inner surface of the inner cylinder 1 at an interval of 45 degrees, and the length of the axial force-bearing component 61 is the same as that of the inner cylinder 1, so that the axial force-bearing component is used as a main force-bearing component of the inner cylinder 1. The 50-degree steel has good rigidity and bending strength and is not easy to deform.
As a preferable scheme, as shown in fig. 1 and fig. 2, the force bearing device 6 further includes a net-shaped force bearing component 62 disposed between two adjacent axial force bearing components 61, and the net-shaped force bearing component 62 is connected to the inner surface of the inner cylinder 1 and the adjacent axial force bearing component 61 respectively. The net-shaped bearing component 62 is connected with the axial bearing component 61 and then connected with the inner surface of the inner cylinder 1, so that the connection strength of the axial bearing component 61 and the inner cylinder 1 is increased, and meanwhile, the net-shaped bearing component 62 is used as an auxiliary bearing component and also has the function of increasing the strength of the inner cylinder 1. Specifically, the length of the reticular bearing component 62 can be 900mm, and the diameter can be 1m, so that the reticular bearing component 62 is integrally laid on the surface of the inner cylinder 1, and the strength of the inner cylinder 1 is increased.
Referring to fig. 1 to 2, the specific working process of this embodiment is as follows:
before a grouting test, an operator calculates the stress condition of the inner barrel 1 in the early stage, selects an elastic component with a proper elastic modulus to install, and keeps the inner barrel 1 at the central horizontal position. In the grouting process, the elastic force of the elastic component is utilized to prevent the inner cylinder 1 from floating upwards or inclining under the action of the grout, and further avoid collision with the inner wall of the outer cylinder 2. Meanwhile, the stress data of the inner cylinder 1 is monitored through a monitoring device 5 connected with the elastic component, so that the stress condition of the inner cylinder 1 is analyzed.
It is noted that the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a balanced shield of atress constructs slip casting test device, includes inner tube (1) and urceolus (2), urceolus (2) cover is established the outside of inner tube (1), and with form clearance (21) between inner tube (1), clearance (21) intussuseption is filled with the thick liquid, a serial communication port, balanced shield of atress constructs slip casting test device still includes:
the support structure (3) is arranged in the inner barrel (1) in a penetrating manner, and two ends of the support structure (3) are fixed;
one end of the elastic component is connected with the inner wall of the inner cylinder (1), and the other end of the elastic component is connected with the support structure (3); and
-monitoring means (5) arranged between the elastic component and the support structure (3) and/or between the elastic component and the inner wall of the inner cartridge (1), the monitoring means (5) being configured to monitor the elastic force of the elastic component.
2. The force balanced shield grouting test device according to claim 1, characterized in that the elastic assembly comprises a plurality of elastic pieces (4), and the plurality of elastic pieces (4) are arranged along the circumference of the support structure (3).
3. The stress-balanced shield grouting test device according to claim 2, characterized in that a plurality of the elastic pieces (4) are uniformly arranged along the circumferential direction of the support structure (3).
4. The stress balance shield grouting test device according to claim 3, wherein the elastic assembly comprises four elastic pieces (4), an included angle between two adjacent elastic pieces (4) is 90 degrees, two elastic pieces (4) of the four elastic pieces (4) are arranged in a vertical direction, and the other two elastic pieces (4) of the four elastic pieces (4) are arranged in a horizontal direction.
5. The stress-balanced shield grouting test device according to claim 2, characterized in that the elastic assemblies are arranged in multiple groups, and the multiple groups of elastic assemblies are arranged at intervals along the axial direction of the support structure (3).
6. A force balanced shield grouting test device according to any one of claims 1-5, characterised in that the support structure (3) comprises:
the central support piece (31) is arranged in the center of the inner cylinder (1) and extends along the axial direction of the inner cylinder (1), and two ends of the central support piece (31) are fixed; and
the mounting bracket (32) is sleeved on the outer side of the central support piece (31), and the monitoring device (5) is arranged between the mounting bracket (32) and the elastic component.
7. A stress balance shield grouting test device according to any one of claims 1-5, wherein the stress balance shield grouting test device further comprises:
the support frame, the both ends of supporting structure (3) all support in on the support frame.
8. The stress balance shield grouting test device according to any one of claims 1-5, characterized in that a force bearing device (6) is arranged on the inner surface of the inner cylinder (1).
9. The stress-balanced shield grouting test device according to claim 8, wherein the force bearing device (6) comprises:
the axial force bearing assemblies (61) are arranged on the inner surface of the inner cylinder (1), the axial force bearing assemblies (61) are arranged at intervals along the circumferential direction of the inner surface of the inner cylinder (1), and the axial force bearing assemblies (61) extend along the axial direction of the inner cylinder (1).
10. The stress-balanced shield grouting test device according to claim 9, wherein the force bearing device (6) further comprises:
and the net-shaped force bearing assemblies (62) are arranged between two adjacent axial force bearing assemblies (61), and the net-shaped force bearing assemblies (62) are respectively connected with the inner surface of the inner cylinder (1) and the adjacent axial force bearing assemblies (61).
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| CN202122012527.4U CN215812788U (en) | 2021-08-25 | 2021-08-25 | Stress balance shield grouting test device |
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| CN202122012527.4U CN215812788U (en) | 2021-08-25 | 2021-08-25 | Stress balance shield grouting test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077776A (en) * | 2022-06-09 | 2022-09-20 | 腾达建设集团股份有限公司 | Buoyancy testing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077776A (en) * | 2022-06-09 | 2022-09-20 | 腾达建设集团股份有限公司 | Buoyancy testing device and method |
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