CN115389239A - Bolt shield tunnel model capable of automatically controlling node force for model test and assembling method thereof - Google Patents
Bolt shield tunnel model capable of automatically controlling node force for model test and assembling method thereof Download PDFInfo
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- CN115389239A CN115389239A CN202211021732.XA CN202211021732A CN115389239A CN 115389239 A CN115389239 A CN 115389239A CN 202211021732 A CN202211021732 A CN 202211021732A CN 115389239 A CN115389239 A CN 115389239A
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 238000000429 assembly Methods 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 239000011295 pitch Substances 0.000 claims description 10
- 230000003139 buffering effect Effects 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The application relates to a bolt shield tunnel model capable of automatically controlling node force for model test and an assembly method thereof, relating to the technical field of underground engineering model test devices, wherein the tunnel model comprises at least two tunnel single-ring components, a connecting component and a hole sealing plate, a cavity is formed in each tunnel single-ring component, the hole sealing plate is used for covering the cavity, and the connecting component is used for connecting and fixing two adjacent tunnel single-ring components; the tunnel single-ring assembly comprises a standard block and a capping block for capping, and the connecting assembly is used for connecting and fixing the adjacent capping block and the standard block. The method and the device have the effect of reducing the experimental data error generated when the tunnel model simulates the actual engineering environment.
Description
Technical Field
The application relates to the technical field of underground engineering model test devices, in particular to a bolt shield tunnel model capable of automatically controlling node force for a model test and an assembling method thereof.
Background
After twenty-first century, with the development of society and the progress of science and technology, urban underground pipeline traffic has been developed sufficiently, wherein the shield tunnel construction method is widely applied due to the characteristics of flexible construction, economical manufacturing cost and little influence on ground buildings and traffic.
In the related technology, the engineering evaluation and evaluation of shield construction at the present stage, and the analysis method mainly comprises prototype observation, theoretical analysis and model test. Because underground engineering accidents are difficult to observe and control on site, shield tunnels are generally researched by adopting a model test, so that more important and reliable reference data corresponding to actual engineering are obtained. In model experiments for studying the direction of a shield tunnel, a complete homogeneous ring is generally used to simulate the shield tunnel.
In view of the related art in the above, the inventors found that the following drawbacks exist: because the shield tunnel is generally simulated by adopting a complete homogeneous ring in a model test, and each ring of the shield tunnel is formed by splicing a plurality of segments in actual engineering, the tunnel model in the test is greatly different from the actual engineering, the actual engineering environment cannot be simulated finely, and a large experimental data error and an improved space are generated during simulation.
Disclosure of Invention
In order to reduce experimental data errors generated when the tunnel model simulates the actual engineering environment, the application provides a bolt shield tunnel model capable of automatically controlling node force for model test and an assembling method thereof.
In a first aspect, the bolt shield tunnel model capable of automatically controlling the node force for the model test adopts the following technical scheme:
a bolt shield tunnel model capable of automatically controlling node force for model test comprises at least two tunnel single-ring components, a connecting component and a tunnel opening sealing plate, wherein a cavity is formed in each tunnel single-ring component, the tunnel opening sealing plate is used for covering the cavity, and the connecting component is used for connecting and fixing two adjacent tunnel single-ring components;
the single-ring tunnel assembly comprises a standard block and a top sealing block for sealing, and the connecting assembly is used for connecting and fixing the adjacent top sealing block and the standard block.
Through adopting above-mentioned technical scheme, thereby connect adjacent top seal piece and standard block through coupling assembling and form tunnel monocycle subassembly, rethread coupling assembling connects adjacent tunnel monocycle subassembly, and seal the board with the entrance to a cave and be connected, finally form holistic model, and seal the board through the entrance to a cave and cover the cavity and establish, make external impurity be difficult to get into inside the cavity when the experiment, thereby simulate actual engineering environment meticulously, reduce the experimental data error that the tunnel model produced when simulating actual engineering environment.
Optionally, a buffer pad for buffering is arranged between the top sealing block and the adjacent top sealing block and between the standard blocks, a buffer pad for buffering is arranged between the standard blocks and the adjacent top sealing block and between the standard blocks, and a through hole for the connecting assembly to penetrate through is formed in the buffer pad.
Through adopting above-mentioned technical scheme, cushion through the adjacent top seal piece of blotter and standard block to make top seal piece and standard block be difficult to receive great power impact and damage, prolong the life of top seal piece and standard block.
Optionally, coupling assembling includes screw rod, spring, nut and fixed block, set up the confession on the fixed block screw rod threaded connection's screw hole, seal the kicking block and all set up the confession on the standard block the nut reaches the standing groove that any one of fixed block was placed, seal the kicking block and all set up the confession on the standard block the connecting hole that the screw rod was worn to establish, the connecting hole with the standing groove communicates each other, the spring housing is located on the screw rod, the one end of spring with the nut butt, the other end of spring with the fixed block butt.
Through adopting above-mentioned technical scheme, through placing nut and fixed block in the standing groove of two wantonly in top seal piece and standard block respectively, and wear to locate behind the connecting hole simultaneously and carry out threaded connection with nut and fixed block through the screw rod, thereby will seal two wantonly in top seal piece and the standard block and be connected, and locate on the screw rod through the spring housing, thereby order about the fixed block and keep away from mutually with the nut, increase the frictional force between fixed block and the screw rod, increase the frictional force between nut and the screw rod simultaneously, and then improve the structural strength of junction.
Optionally, coupling assembling still locates including the cover the conflict ring on the screw rod, conflict ring joint is fixed in the both ends of spring, conflict ring be used for with the nut or the fixed block is contradicted.
Through adopting above-mentioned technical scheme, the cover is established and is supported the ring on the screw rod, is fixed in the both ends of spring and contradicts with nut, fixed block respectively through the ring joint of contradicting to make the spring not directly contradict with nut, fixed block, reduce the wearing and tearing between spring, nut, the fixed block, prolong the life of spring, nut, fixed block.
Optionally, the connection assembly further includes a sleeve sleeved on the spring, and the sleeve is used for protecting the spring.
Through adopting above-mentioned technical scheme, the sleeve is established to the cover on the spring, protects the spring through the sleeve to make the spring be difficult to receive external object's interference, the life of extension spring, and improve the shear strength of spring.
In a second aspect, the technical scheme adopted by the method for assembling the bolt shield tunnel model capable of automatically controlling the node force for the model test is as follows:
a method for assembling a bolt shield tunnel model capable of automatically controlling node force for model tests comprises the following steps:
acquiring the actual tunnel size;
analyzing and acquiring a model tunnel size corresponding to the actual tunnel size and the preset proportionality coefficient according to the corresponding relation among the actual tunnel size, the preset proportionality coefficient and the model tunnel size, and sending the model tunnel size to a terminal held by an operator;
manufacturing a corresponding reduced-scale acrylic pipe barrel according to the size of the model tunnel, and obtaining a capping block and a standard block which are formed in one step by adopting integral cutting;
assembling the top sealing block and the standard block through the connecting assembly to form a single-ring tunnel assembly;
and assembling the tunnel single-ring assembly through the connecting assembly and installing the opening sealing plate.
Through adopting above-mentioned technical scheme, through acquireing actual tunnel size, and the analysis acquire with model tunnel size, thereby make corresponding reduced scale ya keli bobbin according to model tunnel size, and adopt rethread coupling assembling to assemble behind integral cutting the capping piece that obtains one shot forming and the standard block, thereby form tunnel monocycle subassembly, rethread coupling assembling assembles and installs the entrance to a cave sealing plate tunnel monocycle subassembly, thereby simulate actual engineering environment meticulously, the experimental data error that produces when reducing tunnel model and simulating actual engineering environment.
Optionally, the one-step forming of the capping block and the standard block obtained by integral cutting comprises:
obtaining the size of a model tunnel;
analyzing and acquiring the number of the single-ring tunnel assemblies and the size of a single-ring tunnel assembly corresponding to the size of the model tunnel and the width interval of the preset single-ring tunnel assembly according to the corresponding relation between the size of the model tunnel and the number of the single-ring tunnel assemblies and the width interval of the preset single-ring tunnel assembly;
analyzing and acquiring standard block individual values, capping block sizes and standard block sizes corresponding to the tunnel single-ring component size, the preset capping block length interval and the standard block length interval according to the corresponding relation among the tunnel single-ring component size, the preset capping block length interval, the standard block length interval and the standard block individual values;
analyzing and acquiring the slotting numbers and slotting positions of the top sealing blocks and the standard blocks corresponding to the size of the top sealing blocks, the size of the standard blocks and the slotting distance according to the corresponding relation among the size of the top sealing blocks, the size of the standard blocks, the preset slotting distance and the slotting numbers, and sending the slotting numbers and the slotting positions of the top sealing blocks and the standard blocks to a terminal held by an operator;
and the capping block and the standard block are provided with a placing groove and a connecting hole.
By adopting the technical scheme, the size of the model tunnel is obtained by analyzing the size of the model tunnel and the width interval of the preset tunnel single-ring component, the numerical value of the tunnel single-ring component and the size of the single-ring component are obtained, the numerical value of the capping block and the numerical value of the standard block are obtained by analyzing the length interval of the preset capping block and the length interval of the standard block, the number of the tunnel single-ring component, the size of the capping block and the size of the standard block are obtained, and finally the slotting numerical value and the slotting position of the capping block and the standard block are obtained by analyzing the size of the capping block, the size of the standard block and the slotting distance, so that a subsequent operator can conveniently open the placing grooves and the connecting holes on the capping block and the standard block, the placing grooves and the connecting holes on the capping block and the standard block can meet subsequent use requirements, the actual engineering environment is simulated finely, and the experimental data error generated when the tunnel model simulates the actual engineering environment is reduced.
Optionally, assembling the capping block and the standard block through the connecting assembly to form a single-ring assembly of the tunnel includes:
mounting the cushion pad on the mounting side walls of the top sealing block and the standard block;
placing the fixed blocks in the placing grooves on the top sealing block and the standard block;
the screw rod penetrates through the connecting hole and then is in threaded connection with the fixing block;
sequentially installing the contact ring, the spring and the sleeve;
placing nuts in the placing grooves on the adjacent top sealing blocks and the standard blocks;
acquiring the outer diameter of the spring, the inner diameter of the spring, the wire diameter of the spring and the effective number of turns of the spring;
analyzing and calculating the node control force according to the outer diameter of the spring, the inner diameter of the spring, the wire diameter of the spring and the effective number of turns of the spring by adopting a preset node control force calculation formula, and outputting the node control force to a terminal held by an operator;
the operator tightens the nut.
Through adopting above-mentioned technical scheme, through installing the blotter, and install fixed block, screw rod in proper order, the rethread acquires spring external diameter, spring internal diameter, spring line footpath and the effective number of turns of spring, and adopt node control power computational formula analysis to calculate the node control power, thereby install the nut, thereby install seal kicking block and standard block, thereby simulate actual engineering environment meticulously, the experimental data error that produces when reducing the tunnel model and simulating actual engineering environment.
Optionally, the node control force calculation formula includes:
f is the node control force;
k is the spring control force coefficient;
x is the distance the spring is stretched or shortened;
D 1 is the outer diameter of the spring;
D 2 is the inner diameter of the spring;
d is the diameter of the spring wire;
g is the shear modulus of the spring material;
n is the effective number of turns of the spring.
Through adopting above-mentioned technical scheme, calculate node control power through node control power computational formula to make things convenient for follow-up operator to know node control power, make things convenient for follow-up operator to adjust the nut installation, make node control power reach required requirement, thereby simulate actual engineering environment meticulously, reduce the experimental data error that tunnel model produced when simulating actual engineering environment.
Optionally, the tightening of the nut by the operator includes:
acquiring node control force;
analyzing and calculating the number of turns of rotation according to the node control force and by adopting a preset number of turns of rotation calculation formula, and outputting the number of turns of rotation to a terminal held by an operator, wherein the operator rotates the nut according to the number of turns of rotation;
wherein, the calculation formula of the number of turns is as follows:
k is the spring control force coefficient;
s is the pitch of the spring;
n is the number of the thread pitches counted when the spring is about to start to bear force.
Through adopting above-mentioned technical scheme, through acquireing node control power to according to rotating number of turns computational formula to rotating number of turns analytical computation and export to the terminal that the operator held, make things convenient for the operator to know the number of turns of the rotation of nut, the operator rotates the nut, thereby adjust the nut installation of this department, make node control power reach required requirement, thereby simulate actual engineering environment meticulously, reduce the experimental data error that the tunnel model produced when simulating actual engineering environment.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the adjacent top sealing blocks and the standard blocks are connected through the connecting assemblies to form a tunnel single-ring assembly, the adjacent tunnel single-ring assembly is connected through the connecting assemblies and is connected with the tunnel single-ring assembly and the hole sealing plate to finally form an integral model, and the cavity is covered through the hole sealing plate, so that external impurities are not easy to enter the cavity during an experiment, the actual engineering environment is simulated finely, and experimental data errors generated when the tunnel model simulates the actual engineering environment are reduced;
2. the nut and the fixed block are respectively placed in the placing grooves of any two of the top sealing block and the standard block and are simultaneously in threaded connection with the nut and the fixed block after the screw rod penetrates through the connecting hole, so that any two of the top sealing block and the standard block are connected, and the screw rod is sleeved with the spring, so that the fixed block and the nut are driven to be away from each other, the friction force between the fixed block and the screw rod is increased, the friction force between the nut and the screw rod is increased, and the structural strength of the connecting part is further improved;
3. the spring is protected through the sleeve, so that the spring is not easily interfered by external objects, the service life of the spring is prolonged, and the shear strength of the spring is improved.
Drawings
Fig. 1 is an exploded view of a tunnel single ring assembly and an opening closure plate in the embodiment of the present application.
Fig. 2 is an exploded view of the capping block, the proof mass, the cushion pad and the connecting assembly in an embodiment of the present application.
Fig. 3 is an exploded view of a connection assembly in an embodiment of the present application.
Fig. 4 is a flowchart of a method for assembling a bolt shield tunnel model capable of automatically controlling node force for model test according to the present application.
Fig. 5 is a schematic structural view of the staggered installation of the single-ring tunnel assembly in the present application.
FIG. 6 is a flowchart of a method for obtaining a one-step formed capping block and standard block by integral cutting as disclosed herein.
Fig. 7 is a flowchart of a method for assembling the capping block and the standard block by the connecting member and forming a tunneling single-ring assembly according to the present application.
Fig. 8 is a flowchart of a method of tightening a nut by an operator in the present application.
Description of reference numerals: 1. a tunneling single ring assembly; 2. a connection assembly; 3. a hole sealing plate; 4. a cavity; 5. sealing the top block; 6. a standard block; 7. a cushion pad; 8. perforating holes; 9. a screw; 10. a spring; 11. a nut; 12. a fixed block; 13. a threaded hole; 14. a placement groove; 15. connecting holes; 16. a contact ring; 17. a sleeve; 18. a clamping groove; 19. an abutment ring.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
Referring to fig. 1 and 2, an embodiment of the present application discloses a bolt shield tunnel model capable of automatically controlling node force for a model test, which includes at least two tunnel single-ring assemblies 1, a connection assembly 2, and a tunnel opening sealing plate 3. Tunnel monocycle subassembly 1 is the ring type, and coupling assembling 2 is used for connecting and fixed two adjacent tunnel monocycle subassemblies 1, is formed with cavity 4 in a plurality of tunnel monocycle subassemblies 1, and entrance to a cave sealing plate 3 is used for the lid to establish cavity 4, and entrance to a cave sealing plate 3 is installed on the tunnel monocycle subassembly 1 that is located both sides edgemost through the waterproof nanometer of high elasticity glue to make external object be difficult to get into in the cavity 4. In the present embodiment, the tunnel single-ring assembly 1 is provided with eighteen in total.
Referring to fig. 1 and 2, the tunnel monocyclic assembly 1 comprises a capping block 5 and a standard block 6, the capping block 5 is used for final capping, the width of the standard block 6 is equal to the width of the capping block 5, the thickness of the standard block 6 is equal to the thickness of the capping block 5. All install the blotter 7 that is used for the buffering through epoxy glue on the every circumference lateral wall that standard block 6 and top seal piece 5 are the axis along thickness direction to in the circumference and the footpath along tunnel monocycle subassembly 1, all install blotter 7 between two adjacent standard blocks 6 or the top seal piece 5, thereby make standard block 6 and top seal piece 5 be difficult to take place to damage. Coupling assembling 2 is used for connecting and fixed two adjacent capping piece 5 and standard block 6, sets up the wear-to-establish hole 8 that supplies coupling assembling 2 to wear to establish on blotter 7.
Referring to fig. 2 and 3, coupling assembling 2 includes screw rod 9, spring 10, nut 11, fixed block 12, support ring 16 and sleeve 17, all set up the standing groove 14 that supplies in nut 11 and the fixed block 12 to place on top sealing block 5 and the standard block 6, two standing grooves 14 have all been seted up along the both ends of tunnel monocycle subassembly 1 circumference on top sealing block 5 and the standard block 6, three standing groove 14 has all been seted up along the radial both ends of tunnel monocycle subassembly 1 to standard block 6, a standing groove 14 has all been seted up along the radial both ends of tunnel monocycle subassembly 1 to top sealing block 5. In this embodiment, the fixed block 12 is a semi-cylinder, the placing groove 14 on the capping block 5 is a circular groove, and the placing groove 14 on the capping block 5 is used for placing the fixed block 12, because the circular groove is small in size, thereby reducing the strength loss caused by the grooving. The depth of the placing groove 14 on the capping block 5 is equal to the length of the fixing block 12. The placing groove 14 on the standard block 6 is a square groove, the placing groove 14 on the standard block 6 can be used for placing the fixing block 12, and the placing groove 14 on the standard block 6 can also be used for placing the nut 11. The depth of the placing groove 14 on the standard block 6 is equal to the width of the fixing block 12.
Referring to fig. 2 and 3, a threaded hole 13 for the threaded connection of the screw 9 is formed in the fixed block 12, one end of the screw 9 is in threaded connection with the fixed block 12, and the other end of the screw 9 is in threaded connection with the nut 11. Both the top sealing block 5 and the standard block 6 are provided with connecting holes 15 for the screw rods 9 to penetrate through, the diameter of each connecting hole 15 is smaller than the length of the corresponding fixed block 12, the diameter of each connecting hole 15 is smaller than the width of the corresponding fixed block 12, and the connecting holes 15, the placing grooves 14 and the penetrating holes 8 are communicated with one another. One side of the nut 11 close to the fixed block 12 is integrally provided with an abutting ring 19, and the outer diameter of the abutting ring 19 is larger than the diameter of the connecting hole 15, so that when the nut 11 is placed in the placing groove 14, the nut 11 is not easy to enter the connecting hole 15.
Referring to fig. 2 and 3, the spring 10 is sleeved on the screw 9, one end of the spring 10 close to the nut 11 abuts against the nut 11, and one end of the spring 10 far from the nut 11 abuts against the fixed block 12. After the fixed block 12 and the nut 11 connect any two adjacent blocks of the capping block 5 and the standard block 6, the spring 10 drives the fixed block 12 and the nut 11 to be away from each other, so that the threads on the side wall of the threaded hole 13 are in tight abutting joint with the threads on the screw 9, the contact area between the fixed block 12 and the screw 9 is increased, the fixed block 12 is not easy to move, the threads on the nut 11 are in tight abutting joint with the threads on the screw 9, the contact area between the nut 11 and the screw 9 is increased, and the nut 11 is not easy to move.
Referring to fig. 2 and 3, the sleeve 17 is sleeved on the spring 10, the sleeve 17 is used for protecting the spring 10, the outer diameter of the sleeve 17 is equal to the diameter of the connecting hole 15, and the inner diameter of the sleeve 17 is equal to the outer diameter of the spring 10. The sleeve 17 is used for isolating the spring 10, so that an external object is not easy to influence the spring 10, the service life of the spring 10 is prolonged, the spring 10 is located between any two adjacent sealing blocks 5 and standard blocks 6, the shearing strength at the position is easy to damage the spring 10 and the screw 9, the shearing strength of the spring 10 and the screw 9 is strengthened through the sleeve 17, and the service life of the spring 10 and the screw 9 at the position is prolonged.
Referring to fig. 2 and 3, the abutting ring 16 is sleeved on the screw rod 9, a clamping groove 18 for clamping and fixing the spring 10 is formed in the abutting ring 16, the abutting ring 16 is provided with two parts, the two abutting rings 16 are respectively located at two ends of the spring 10, the abutting ring 16 located at one end, close to the fixed block 12, of the spring 10 is used for abutting against the fixed block 12, the abutting ring 16 located at one end, close to the nut 11, of the spring 10 is used for abutting against the nut 11, the two ends, through the abutting ring 16, of the spring 10 are not directly contacted with the fixed block 12 and the nut 11, and therefore the abrasion of the spring 10, the fixed block 12 and the nut 11 is reduced, the abrasion of the nut 11 is avoided, the service life of the spring 10 is prolonged, the fixed block 12 and the nut 11 is prolonged. The external diameter of the contact ring 16 is equal to the internal diameter of the sleeve 17, so that the circumferential outer side wall of the contact ring 16 is tightly abutted to the inner side wall of the sleeve 17, thereby reducing impurities such as dust and the like entering the sleeve 17, influencing the use of the spring 10 and prolonging the service life of the spring 10.
Referring to fig. 4, a method for assembling a bolt shield tunnel model capable of automatically controlling a node force for a model test includes:
and step S100, acquiring the actual tunnel size.
The actual tunnel size is a size required for the tunnel in an actual situation, and is obtained by an input of an operator.
And S200, analyzing and acquiring the model tunnel size corresponding to the actual tunnel size and the preset proportionality coefficient according to the corresponding relation among the actual tunnel size, the preset proportionality coefficient and the model tunnel size, and sending the model tunnel size to a terminal held by an operator.
The model tunnel size refers to the size of the built tunnel model, the proportionality coefficient is obtained by inquiring from a database in which the proportionality coefficient is stored, and the proportionality coefficient refers to the ratio of the size required by the tunnel in an actual condition to the size of the built tunnel model. The size of the model tunnel is obtained through analysis of the actual tunnel size and the preset proportionality coefficient, and the size of the model tunnel is sent to a terminal held by an operator, so that the operator can know the size of the model tunnel conveniently.
And S300, manufacturing a corresponding reduced-size acrylic pipe barrel according to the size of the model tunnel, and obtaining a capping block 5 and a standard block 6 which are formed in one step by adopting integral cutting.
The reduced-scale acrylic pipe barrel is made of acrylic materials and is reduced in proportion. An operator manufactures the reduced-size acrylic pipe barrel according to the size of the model tunnel and cuts the reduced-size acrylic pipe barrel by adopting an integral cutting method, so that the capping block 5 and the standard block 6 which are formed in one step are obtained. The integral cutting means that the object to be cut is simultaneously cut by a plurality of cutters at the same time, so that the object to be cut is cut into a plurality of objects with required sizes.
In step S400, the capping block 5 and the standard block 6 are assembled by the connecting assembly 2 to form the single-ring tunnel assembly 1.
Wherein, a top sealing block 5 and nine standard blocks 6 are installed through a connecting component 2, thereby forming an annular single-ring tunnel component 1.
And S500, assembling the tunnel single-ring assembly 1 through the connecting assembly 2 and installing the hole sealing plate 3.
Wherein, install eighteen tunnel monocycle subassemblies 1 through coupling assembling 2 to form a pipy model, can align two top seal blocks 5 among two adjacent tunnel monocycle subassemblies 1 each other at the assembly process, make the gap between top seal block 5 and the standard block 6 among two adjacent tunnel monocycle subassemblies 1 for intercommunication each other, thereby realize the through seam and assemble, the waterproof nanometer of rethread high elasticity glues with the entrance to a cave sealing plate 3 installation in the both sides of model. In the present embodiment, the tunnel single-ring assembly 1 is assembled using through slits.
Referring to fig. 5, in the assembling process, two top sealing blocks 5 in two adjacent single-ring tunnel assemblies 1 can be staggered with each other, so that gaps between the top sealing blocks 5 and the standard blocks 6 in the two adjacent single-ring tunnel assemblies 1 are not communicated with each other, thereby realizing assembling at staggered joints, and then installing the hole sealing plates 3 on two sides of the model through high-elasticity waterproof nano-glue.
In step S300 shown in fig. 4, in order to further ensure the rationality of the capping block 5 and the standard block 6, it is necessary to further perform individual analysis and calculation on the capping block 5 and the standard block 6, and the steps shown in fig. 6 will be specifically described in detail.
Referring to fig. 6, the one-step molding of the capping block 5 and the standard block 6 by integral cutting comprises the following steps:
step S310, obtaining the size of the model tunnel.
Step S320, analyzing and obtaining the number of the single-ring tunnel assemblies and the size of the single-ring tunnel assembly corresponding to the size of the model tunnel and the width of the preset single-ring tunnel assembly according to the corresponding relationship between the size of the model tunnel and the width of the preset single-ring tunnel assembly and the number of the single-ring tunnel assembly.
The width interval of the single-ring tunnel assembly is obtained by inquiring a database in which the width interval of the single-ring tunnel assembly is stored, and the width interval of the single-ring tunnel assembly refers to the maximum width and the minimum width of the single-ring tunnel assembly 1. The number of the single-ring tunnel assemblies refers to the number of the single-ring tunnel assemblies 1 required by the whole model after the size of the single-ring tunnel assembly is adopted, and the size of the single-ring tunnel assembly refers to the size corresponding to the single-ring tunnel assembly 1. And analyzing and acquiring the numerical value of the single-ring tunnel assembly and the size of the single-ring tunnel assembly through the size of the model tunnel and the width interval of the preset single-ring tunnel assembly.
Step S330, analyzing and acquiring standard block numerical values, capping block sizes and standard block sizes corresponding to the tunnel single ring component size, the preset capping block length interval and the standard block length interval according to the corresponding relation among the tunnel single ring component size, the preset capping block length interval, the standard block length interval and the standard block numerical values.
The capping block length interval is obtained by querying a database in which the capping block length interval is stored, and the capping block length interval refers to the maximum length and the minimum length of the capping block 5. The standard block length interval is obtained by querying a database in which the standard block length interval is stored, and the standard block length interval refers to the maximum length and the minimum length of the standard block 6.
The standard block size refers to a size corresponding to a standard block number value at the tunnel single-loop component size. The standard block number refers to the number of the corresponding standard block size in one tunnel single-ring component 1. The capping block size refers to a size corresponding to a standard block number and a standard block size at the tunnel single-loop component size.
And analyzing and obtaining a standard block number value, a capping block size and a standard block size through the tunnel single-ring component size, the preset capping block length interval and the standard block length interval.
Step S340, analyzing and obtaining the slotting numerical values and slotting positions of the capping block 5 and the standard block 6 corresponding to the capping block size, the standard block size and the slotting distance according to the corresponding relationship between the capping block size, the standard block size and the preset slotting distance and slotting numerical values, and sending the slotting numerical values and slotting positions of the capping block 5 and the standard block 6 to the terminal held by the operator.
The slotting distance is obtained by inquiring a database in which the slotting distance is stored, and the slotting distance is a distance required by two adjacent placing grooves 14 when the placing grooves 14 are formed in the capping block 5 and the standard block 6. The number of slots is the number of slots 14 that can be formed in the capping block 5 and the standard block 6. The slotting numerical values and the slotting positions of the capping blocks 5 and the standard blocks 6 are obtained through analysis of the capping block sizes, the standard block sizes and the slotting intervals, the slotting numerical values and the slotting positions of the capping blocks 5 and the standard blocks 6 are sent to a terminal held by an operator, and therefore the operator can know the slotting numerical values and the slotting positions of the capping blocks 5 and the standard blocks 6 conveniently.
In step S350, the top sealing block 5 and the standard block 6 are provided with the placing groove 14 and the connecting hole 15.
Wherein, the operator sets a placing groove 14 on the standard block 6 according to the number of the slots of the top sealing block 5 and the slot position, and sets a connecting hole 15 communicated with the placing groove 14. An operator opens a placing groove 14 on the standard block 6 according to the number of the slots of the standard block 6 and the slot positions, and opens a connecting hole 15 mutually communicated with the placing groove 14.
In step S400 shown in fig. 4, in order to further ensure the rationality of the formation of the tunnel single-ring assembly 1, further individual analysis and calculation of the formation of the tunnel single-ring assembly 1 are required, and the detailed description will be given specifically by the steps shown in fig. 7.
Referring to fig. 7, the assembly of the capping block 5 and the standard block 6 by the connecting assembly 2 and the formation of the tunneling single-ring assembly 1 includes the following steps:
in step S410, the cushion pad 7 is mounted on the mounting side walls of the capping block 5 and the standard block 6.
Wherein, the buffer pad 7 is fixed on the side wall between the capping block 5 and the standard block 6 by epoxy resin glue, and the preset through holes 8 on the buffer pad 7 are aligned with the connecting holes 15.
In step S420, the fixed block 12 is placed in the placement grooves 14 of the capping block 5 and the standard block 6.
When the fixing block 12 is placed in the placing groove 14 in the capping block 5, the semicircular surface on the fixing block 12 is in close contact with the side wall of the placing groove 14, and the length direction of the fixing block 12 is consistent with the depth direction of the placing groove 14. When the fixed block 12 is placed in the placement groove 14 in the standard block 6, the plane on the fixed block 12 is in close contact with the side wall of the placement groove 14, and the width direction of the fixed block 12 is the same as the depth direction of the placement groove 14.
And step S430, the screw 9 is threaded on the fixed block 12 after passing through the connecting hole 15.
The screw 9 penetrates through the connecting hole 15 corresponding to one of the top sealing block 5 and the standard block 6, the screw 9 rotates, the fixed block 12 is limited by the groove wall of the placing groove 14, and therefore rotation is not prone to occurring, and the screw 9 penetrates through the threaded hole 13 to be in threaded connection with the fixed block 12.
In step S440, the contact ring 16, the spring 10, and the sleeve 17 are sequentially mounted.
The two ends of the spring 10 are placed and clamped in the clamping groove 18, so that the contact rings 16 are clamped and fixed at the two ends of the spring 10, the spring 10 and the contact rings 16 are sleeved on the screw 9 at the same time, and the spring 10 and the contact rings 16 are located in the connecting hole 15. The sleeve 17 is sleeved on the spring 10 and the contact ring 16 until the sleeve 17 is located in the connection hole 15.
In step S450, the nut 11 is placed in the placement groove 14 of the adjacent capping block 5 and standard block 6.
The nut 11 is placed in the placing groove 14 of the adjacent capping block 5 and standard block 6, and the abutting ring 19 is tightly abutted with the side wall of the placing groove 14 close to the side where the fixing block 12 is installed.
Step S460, obtaining the outer diameter of the spring, the inner diameter of the spring, the wire diameter of the spring and the effective number of turns of the spring.
The outer diameter of the spring refers to the diameter of an outer ring of a coil after the spring is coiled, the inner diameter of the spring refers to the diameter of an inner ring of the coil after the spring is coiled, the diameter of the spring is the diameter of the spring, and the number of effective turns of the spring refers to the number of coils after the spring is coiled. Spring external diameter, spring internal diameter, spring line footpath and the effective number of turns of spring all adopt measuring tool to measure through the operator and acquire, and measuring tool includes but not limited to slide caliper, micrometer.
And step S470, analyzing and calculating the node control force according to the outer diameter of the spring, the inner diameter of the spring, the wire diameter of the spring and the effective number of turns of the spring by adopting a calculation formula according to the preset node control force, and outputting the node control force to a terminal held by an operator.
Wherein, the node control force calculation formula comprises:
f is the node control force;
k is the spring control force coefficient;
x is the distance the spring is stretched or shortened;
D 1 is the outer diameter of the spring;
D 2 is the inner diameter of the spring;
d is the diameter of the spring wire;
g is the shear modulus of the spring material;
n is the effective number of turns of the spring.
For example, the spring 10 is made of silicon-manganese material, so the shear modulus G =102400Mpa, the wire diameter D =1mm and the outer diameter D of the spring are obtained 1 =3mm, spring inner diameter D 2 =1mm, the number of effective turns N =4, and the distance x =2mm by which the spring is stretched or shortened, the spring control force coefficient K =400N/mm, and the node control force F =800N can be obtained.
In step S480, the operator tightens the nut 11.
Wherein, the operator moves one of the adjacent capping blocks 5 and the standard blocks 6 to enable the screw rods 9 to pass through the corresponding connecting holes 15 and tighten the nuts 11.
In step S480 shown in fig. 7, in order to further ensure the reasonableness of the tightening of the nut 11, it is necessary to perform further individual analysis and calculation of the tightening of the nut 11, and the details will be described specifically with reference to the step shown in fig. 8.
Referring to fig. 8, the tightening of the nut 11 by the operator includes the steps of:
in step S481, a node control force is acquired.
And step S482, analyzing and calculating the number of turns according to the node control force and by adopting a preset turn number calculation formula, outputting the number of turns to a terminal held by an operator, and rotating the nut 11 by the operator according to the number of turns.
Wherein, the number of turns calculation formula is:
k is the spring control force coefficient;
s is the pitch of the spring;
n is the number of the thread pitches counted when the spring is about to start to bear force.
For example, when the pitch S =2 of the spring and the pitch control force F =800N, the number of pitches N =2 calculated when the spring is about to start to be stressed, that is, the number of screwing-in turns of the nut 11 is 2 turns, so that the nut 11 is convenient for an operator to install, and the pitch control force after the nut 11 is installed is convenient to meet a predetermined requirement.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a but bolt shield tunnel model of automatic control node power that model test used which characterized in that: the tunnel single-ring assembly fixing device comprises at least two tunnel single-ring assemblies (1), a connecting assembly (2) and an opening sealing plate (3), wherein a cavity (4) is formed in each tunnel single-ring assembly (1), the opening sealing plate (3) is used for covering the cavity (4), and the connecting assembly (2) is used for connecting and fixing two adjacent tunnel single-ring assemblies (1);
the tunnel single-ring component (1) comprises a standard block (6) and a capping block (5) for capping, and the connecting component (2) is used for connecting and fixing the adjacent capping block (5) and the standard block (6).
2. The bolt shield tunnel model capable of automatically controlling the node force for the model test according to claim 1, wherein: the sealing and ejecting device is characterized in that buffering cushions (7) used for buffering are arranged between the sealing and ejecting blocks (5) and the standard blocks (6), the standard blocks (6) are adjacent to the sealing and ejecting blocks (5) and buffering cushions (7) used for buffering are arranged between the standard blocks (6), and penetrating holes (8) for the connecting assemblies (2) to penetrate are formed in the buffering cushions (7).
3. The bolt shield tunnel model capable of automatically controlling the node force for the model test according to claim 1, wherein: coupling assembling (2) include screw rod (9), spring (10), nut (11) and fixed block (12), set up the confession on fixed block (12) screw rod (9) threaded connection's screw hole (13), top sealing piece (5) reach all set up the confession on standard block (6) nut (11) reach standing groove (14) that arbitrary one in fixed block (12) was placed, top sealing piece (5) reach all set up the confession on standard block (6) connecting hole (15) that screw rod (9) were worn to establish, connecting hole (15) with standing groove (14) communicate mutually, spring (10) cover is located on screw rod (9), the one end of spring (10) with nut (11) butt, the other end of spring (10) with fixed block (12) butt.
4. The bolt shield tunnel model capable of automatically controlling the node force for the model test according to claim 3, wherein: coupling assembling (2) are still located including the cover conflict ring (16) on screw rod (9), conflict ring (16) joint is fixed in the both ends of spring (10), conflict ring (16) be used for with nut (11) or fixed block (12) are contradicted.
5. The model of claim 4, wherein the node force is automatically controlled by the bolt shield tunnel model according to the following characteristics: the connecting component (2) further comprises a sleeve (17) sleeved on the spring (10), and the sleeve (17) is used for protecting the spring (10).
6. A method for assembling a bolt shield tunnel model with automatically controllable node force for model test, which is applied to the bolt shield tunnel model with automatically controllable node force for model test according to claim 5, is characterized by comprising the following steps:
acquiring the actual tunnel size;
analyzing and acquiring a model tunnel size corresponding to the actual tunnel size and a preset proportionality coefficient according to the corresponding relation among the actual tunnel size, the preset proportionality coefficient and the model tunnel size, and sending the model tunnel size to a terminal held by an operator;
manufacturing a corresponding reduced-size acrylic pipe barrel according to the size of the model tunnel, and obtaining a capping block (5) and a standard block (6) which are formed in one step by adopting integral cutting;
assembling the capping block (5) and the standard block (6) through the connecting assembly (2) to form a tunnel single-ring assembly (1);
the tunnel single-ring assembly (1) is assembled through the connecting assembly (2) and the opening sealing plate (3) is installed.
7. The method for assembling a bolt shield tunnel model capable of automatically controlling node force for model test according to claim 6, wherein the step of obtaining the one-step formed capping block (5) and the standard block (6) by integral cutting comprises the following steps:
obtaining the size of a model tunnel;
analyzing and acquiring the numerical values of the single tunnel ring assemblies (1) and the size of each single tunnel ring assembly (1) corresponding to the size of the model tunnel and the width interval of the preset single tunnel ring assembly (1) according to the corresponding relation between the size of the model tunnel and the width interval of the preset single tunnel ring assembly (1) and the numerical values of the single tunnel ring assemblies (1);
analyzing and acquiring the number of standard blocks (6), the size of the capping blocks (5) and the size of the standard blocks (6) corresponding to the size of the tunnel single-ring assembly (1), the length interval of the preset capping blocks (5) and the length interval of the standard blocks (6) according to the corresponding relation among the size of the tunnel single-ring assembly (1), the length interval of the preset capping blocks (5), the length interval of the standard blocks (6) and the number of the standard blocks (6);
analyzing and acquiring the slotting numerical values and slotting positions of the capping block (5) and the standard block (6) corresponding to the size of the capping block (5), the size of the standard block (6) and the slotting distance according to the corresponding relation between the size of the capping block (5), the size of the standard block (6) and the preset slotting distance and slotting numerical values, and sending the slotting numerical values and slotting positions of the capping block (5) and the standard block (6) to a terminal held by an operator;
the capping block (5) and the standard block (6) are provided with a placing groove (14) and a connecting hole (15).
8. The method for assembling the bolt shield tunnel model with automatically controllable node force for model test according to claim 6, wherein assembling the capping block (5) and the standard block (6) through the connecting member (2) and forming the tunnel single-ring assembly (1) comprises:
installing a cushion pad (7) on the installation side walls of the top sealing block (5) and the standard block (6);
placing the fixed block (12) in the placing grooves (14) on the top sealing block (5) and the standard block (6);
the screw (9) penetrates through the connecting hole (15) and then is in threaded connection with the fixing block (12);
sequentially installing the abutting ring (16), the spring (10) and the sleeve (17);
placing the nut (11) in a placing groove (14) on the adjacent capping block (5) and the standard block (6);
acquiring the outer diameter of the spring, the inner diameter of the spring, the wire diameter of the spring and the effective number of turns of the spring;
analyzing and calculating the node control force according to the outer diameter of the spring, the inner diameter of the spring, the wire diameter of the spring and the effective number of turns of the spring by adopting a preset node control force calculation formula, and outputting the node control force to a terminal held by an operator;
an operator tightens the nut (11).
9. The method as claimed in claim 8, wherein the node control force calculation formula includes:
f is the node control force;
k is the spring control force coefficient;
x is the distance the spring is stretched or shortened;
D 1 is the outer diameter of the spring;
D 2 is the inner diameter of the spring;
d is the diameter of the spring wire;
g is the shear modulus of the spring material;
n is the effective number of turns of the spring.
10. The assembling method of the bolt shield tunnel model capable of automatically controlling the node force for the model test according to claim 8, wherein the operator tightens the nut (11) comprising:
acquiring node control force;
analyzing and calculating the number of turns of rotation according to the node control force and by adopting a preset number of turns of rotation calculation formula, and outputting the number of turns of rotation to a terminal held by an operator, wherein the operator rotates the nut (11) according to the number of turns of rotation;
wherein, the calculation formula of the number of turns is as follows:
k is the spring control force coefficient;
s is the pitch of the spring;
n is the number of the thread pitches counted when the spring is about to start to bear force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211021732.XA CN115389239B (en) | 2022-08-24 | 2022-08-24 | Bolt shield tunnel model capable of automatically controlling node force for model test and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211021732.XA CN115389239B (en) | 2022-08-24 | 2022-08-24 | Bolt shield tunnel model capable of automatically controlling node force for model test and assembly method thereof |
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| CN115389239B CN115389239B (en) | 2024-06-28 |
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| JP2003184490A (en) * | 2001-12-13 | 2003-07-03 | Nippon Steel Corp | Primary lining part structure of shield tunnel |
| CN207194905U (en) * | 2017-04-21 | 2018-04-06 | 天津大学 | A kind of tunnel model for shield model test |
| CN109374865A (en) * | 2018-12-07 | 2019-02-22 | 华侨大学 | A kind of shield tunnel scaled model considering curved bolt clipping forcee and production method |
| CN109493710A (en) * | 2018-12-21 | 2019-03-19 | 同济大学 | The shield tunnel liner design methods and model of the circumferential assembled performance of analog |
| CN113959750A (en) * | 2021-11-17 | 2022-01-21 | 北京市市政工程设计研究总院有限公司 | Assembled shield tunnel model lining for centrifugal model test and manufacturing method thereof |
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2022
- 2022-08-24 CN CN202211021732.XA patent/CN115389239B/en active Active
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| JP2003184490A (en) * | 2001-12-13 | 2003-07-03 | Nippon Steel Corp | Primary lining part structure of shield tunnel |
| CN207194905U (en) * | 2017-04-21 | 2018-04-06 | 天津大学 | A kind of tunnel model for shield model test |
| CN109374865A (en) * | 2018-12-07 | 2019-02-22 | 华侨大学 | A kind of shield tunnel scaled model considering curved bolt clipping forcee and production method |
| CN109493710A (en) * | 2018-12-21 | 2019-03-19 | 同济大学 | The shield tunnel liner design methods and model of the circumferential assembled performance of analog |
| CN113959750A (en) * | 2021-11-17 | 2022-01-21 | 北京市市政工程设计研究总院有限公司 | Assembled shield tunnel model lining for centrifugal model test and manufacturing method thereof |
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