CN209542411U - A kind of section of jurisdiction-railway roadbed minimum bonding force measurement device - Google Patents
A kind of section of jurisdiction-railway roadbed minimum bonding force measurement device Download PDFInfo
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- CN209542411U CN209542411U CN201920238224.4U CN201920238224U CN209542411U CN 209542411 U CN209542411 U CN 209542411U CN 201920238224 U CN201920238224 U CN 201920238224U CN 209542411 U CN209542411 U CN 209542411U
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- China
- Prior art keywords
- simulation
- railway roadbed
- duct piece
- shield duct
- bonding force
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Abstract
The utility model discloses a kind of section of jurisdiction-railway roadbed minimum bonding force measurement devices, including simulation shield duct piece and the simulation railway roadbed that lower part in simulation shield duct piece is arranged in；Partition is provided between simulation shield duct piece and simulation railway roadbed；It is additionally provided with one end and is fixed at lower end on the outside of simulation shield duct piece, the other end sequentially passes through simulation shield duct piece, partition and the fixed link for simulating railway roadbed；Conducting wire one end is connected and fixed bar upper end, and the other end successively by the pulley, the simulation shield duct piece side wall that are arranged on simulation railway roadbed, is connected to the fixation bracket being arranged on the outside of simulation shield duct piece；It is additionally provided on simulation railway roadbed for providing the dynamic load device for testing required dynamic load；It is additionally provided with the force snesor for acquiring wire tension；The utility model considers influence of the effect of vibration to structure under tunnel operation condition, more meets tunnel actual conditions, realizes the direct measurement of minimum bonding force.
Description
Technical field
The utility model relates to tunnel performance detection assessment technique fields, and in particular to a kind of section of jurisdiction-railway roadbed minimum bonding
Power measurement device.
Background technique
As urbanization process is getting faster, quick development is had been obtained in subway tunnel construction, and shield tunnel is applied
Work provides guarantee for underground space construction；In shield tunnel construction, tunnel duct piece is directly assembled using prefabricated pipe section, in section of jurisdiction
Concrete cast-in-situ railway roadbed is carried out after the completion of assembled；There are certain bonding forces between tunnel segment structure and ballast bed structure；Bonding force is
Keep the predominant intermolecular forces of section of jurisdiction and railway roadbed globality；The globality of section of jurisdiction and railway roadbed is affected under train vibration effect,
When oscillatory load is more than bonding force size, the vibration deformation of section of jurisdiction and railway roadbed is uncoordinated, can generate removing, infiltration grout etc. one
Series of problems shortens the working life, and influences safety.Therefore, railway roadbed-section of jurisdiction bonding force numerical value is obtained to guarantee tunnel operation security
It is particularly significant.
There is presently no simple and effective device and method to obtain this numerical value；For bonding force mainly by theoretical research,
Numerical simulation and laboratory test: a kind of simulation examination for evaluating thick organic coating adhesive strength as disclosed in the first automobile group company
Proved recipe method；Test piece 2 are taken, nylon powder is placed between test area, overlaps trial zone, is placed between two counterweights up and down, puts
It is placed in baking oven；It is taken out after a period of time and is cooled to room temperature, bonding force survey is carried out on nonmetallic materials machine for tensile strength testing
It is fixed, it is averaged as test result.This method can evaluate organic coating adhesive strength, but in view of railway roadbed-tunnel segment structure is not
Simple organic coating bonding, bonding force and organic coating adhesive strength have certain difference, therefore are not particularly suited for railway roadbed-section of jurisdiction
The research of structure." influence of the cast-in-place non-fragment orbit concrete sleeper to adhesion of new and old concrete face stress state " is based on thermodynamics,
Using finite element analysis software as platform, the face static structural analysis of monolithic roadbed track adhesion of new and old concrete and heat-knot have been write
The program of structure coupling transient analysis.Solid concrete roabed model is established, to the temperature field in adhesion of new and old concrete face, temperature ladder in model
Degree, temperature stress and structural stress are analyzed.This method carries out numerical simulation by finite element software, analyzes answering for bonding plane
Power state.The influence for mainly considering temperature stress, does not account for Train induced load, while this method mainly passes through theoretical simulation
It studies, real process is a complicated state, be not ideal material, have some limitations in practical applications.
The existing method for being suitable for determining bonding strength between thick organic coating, be not particularly suited for tunnel duct piece-railway roadbed it
Between bonding force measurement；Because not Nian Jie by organic coating between section of jurisdiction and railway roadbed, but on existed concrete bridge section of jurisdiction
The bonding force that casting concrete is formed；Section of jurisdiction, railway roadbed are large scale structure, cannot directly be detected by machine for tensile strength testing,
Last active force form is different, and section of jurisdiction-ballast bed structure bears oscillatory load, cannot simply be equal to pulling force.
Utility model content
The utility model proposes that one kind can simulate field condition in view of the shortcomings of the prior art, considers that oscillatory load is made
With the intuitive section of jurisdiction-railway roadbed minimum bonding force measurement device for obtaining bonding force numerical value.
The technical solution adopted in the utility model is: a kind of section of jurisdiction-railway roadbed minimum bonding force measurement device, including simulation shield
Structure section of jurisdiction and the simulation railway roadbed that lower part in simulation shield duct piece is set；Simulation shield duct piece and simulation railway roadbed between be provided with every
Plate；It is additionally provided with one end and is fixed at lower end on the outside of simulation shield duct piece, the other end sequentially passes through simulation shield duct piece, partition
With the fixed link of simulation railway roadbed；Conducting wire one end is connected and fixed bar upper end, and the other end is successively by being arranged in the cunning simulated on railway roadbed
Wheel, simulation shield duct piece side wall, are connected to the fixation bracket being arranged on the outside of simulation shield duct piece；It is additionally provided on simulation railway roadbed
For providing the dynamic load device for testing required dynamic load；It is additionally provided with the force snesor for acquiring wire tension.
Further, the conducting wire is connect by pretension bolt with fixed bracket.
Further, the first sleeve passed through for fixed link is provided in the simulation railway roadbed.
Further, the fixed link is prepared using reinforcing bar, and one end is bolted setting outside simulation shield duct piece
Wall.
Further, the second sleeve passed through for conducting wire is provided on the simulation shield duct piece side wall.
(1) the utility model considers influence of the effect of vibration to structure under tunnel operation condition, more meets tunnel reality
Situation；
(2) it is that train vibration leads to railway roadbed and pipe that the utility model, which will be difficult to minimum bonding force equivalency transform measured directly,
Interaction force between chip architecture realizes the direct measurement of minimum bonding force.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is utility model device partial structural diagram.
In figure, 1- simulates shield duct piece, 2- dynamic load device, and 3- simulates railway roadbed, 4- partition, 6- fixed link, 7- bolt, 8- cunning
Wheel, 9- conducting wire, 10- force snesor, the fixed bracket of 11-, 12- pretension bolt, 13- second sleeve.
Specific embodiment
The utility model is described further below in conjunction with the drawings and specific embodiments.
As shown in Figs. 1-2, a kind of section of jurisdiction-railway roadbed minimum bonding force measurement device, including simulation shield duct piece 1 and setting exist
Simulate the simulation railway roadbed 3 of lower part in shield duct piece 1；Partition 4 is provided between simulation shield duct piece 1 and simulation railway roadbed 3；It also sets up
There is one end to be fixed at simulation 1 outside lower end of shield duct piece, the other end sequentially passes through simulation shield duct piece 1, partition 4 and simulation
The fixed link 6 of railway roadbed 3；9 one end of conducting wire is connected and fixed 6 upper end of bar, and the other end is successively by being arranged in the pulley simulated on railway roadbed 3
8,1 side wall of shield duct piece is simulated, the fixation bracket 11 that 1 outside of simulation shield duct piece is set is connected to；It simulates on railway roadbed 3 also
It is provided with for providing the dynamic load device 2 for testing required dynamic load；It is additionally provided with the force snesor 10 for acquiring 9 pulling force of conducting wire.
Conducting wire 9 is connect by pretension bolt 12 with fixed bracket 11；It is provided in simulation railway roadbed 3 and passes through for fixed link 6
First sleeve 5；Fixed link 6 is prepared using reinforcing bar, and one end is fixed at simulation 1 outer wall of shield duct piece by bolt 7.Simulate shield
The second sleeve 13 passed through for conducting wire 9 is provided on 1 side wall of structure section of jurisdiction.
Test process is carried out using section of jurisdiction of the present invention-railway roadbed minimum bonding force measurement device, comprising the following steps:
Step 1: simulation shield duct piece 1 being subjected to assembly, is drilled with the through-hole passed through for fixed link 6；In simulation shield duct piece 1
It is interior to be laid with the partition 4 being bonded with its inner wall, then carry out pouring for simulation railway roadbed 3.
It drills on simulation shield duct piece 1 after the completion of assembly, the reinforcing bar outer diameter of bore size and the use of fixed link 6
It is identical, it is ensured that with the globality of simulation shield duct piece 1 after reinforcing bar insertion, reinforcing bar and simulation shield duct piece 1 to be kept to move unanimously.?
Before concrete simulation railway roadbed pours, one layer of way-board 4 is laid in simulation shield duct piece 1, stationary barrier simultaneously makes itself and simulation shield
It is fitted closely on the inside of structure section of jurisdiction 1, it is ensured that simulation railway roadbed 3 is consistent with simulation 1 shape of shield duct piece after pouring and is bonded completely, is in
Critical state.Pre-buried first sleeve 5,5 internal diameter of first sleeve be slightly larger than reinforcing bar outer diameter, it is ensured that reinforcing bar implantation after with mould
There is no frictional resistance between quasi- 3 structure of railway roadbed, excludes the influence of frictional force.
Step 2: simulation railway roadbed 3 is conserved；
Pouring for whole simulation railway roadbed 3 is carried out according to live C35 concrete, is supported at the standard conditions after the completion of pouring
Shield.
Step 3: 6 one end of fixed link being fixed on simulation 1 outer wall of shield duct piece, the other end sequentially passes through simulation shield duct piece
1, partition 4 and simulation railway roadbed 3；And connect 9 one end of conducting wire with 6 upper end of fixed link, force snesor 10 is arranged on conducting wire 9.
After the completion of simulating the maintenance of railway roadbed 3, by the binding of 9 one end of conducting wire on reinforcing bar, 10 He of force snesor is arranged on conducting wire
Output equipment；Reinforcing bar passes through simulation shield duct piece 1 by first sleeve 5, uses pretension bolt 12 on the outside of simulation shield duct piece 1
Fixed steel bars are in close contact reinforcing bar and simulation shield duct piece 1, are formed unified whole.Conducting wire 9 is set by simulating 3 surface of railway roadbed
The reserved hole of the pulley 8 and simulation 1 one end of shield duct piece set is exported to outside simulation shield duct piece 1, is fixed on fixed bracket 11,
Fixed 11 side of bracket is reinforced with pretension bolt 12；Apply certain pretightning force by pretension bolt 12；Its middle pulley 8 passes through branch
Frame setting is on simulation railway roadbed 3.
Step 4: pretightning force being applied to conducting wire 9 in conducting wire 9 and fixed 11 connecting pin of bracket；
Step 5: by the setting of dynamic load device 2 on simulation railway roadbed 3, dynamic load device 2 being started using predeterminated frequency；
After device is installed, by the setting of dynamic load device 2 to simulation railway roadbed 3, start dynamic load device 2；Dynamic load device 2 is adopted
Dynamic load load is carried out with the frequency that collection in worksite obtains.
Step 6: collecting the collected force signal of force snesor 10, i.e. section of jurisdiction-railway roadbed minimum bonding force.
Output equipment can also be set on conducting wire 9, the collected signal of force snesor 10 is exported；It may include A/D
Conversion equipment and storage device can also include transceiver module, long-range monitoring sent signal to by way of wireless telecommunications
Device.
In dynamic load loading procedure, simulation shield duct piece 1 and simulation railway roadbed 3 vibrate, and structural member mutually vibrates generation
The numerical value of power be that protect simulation shield duct piece 1 and simulate railway roadbed 3 be the required minimum bonding force of unified entirety；Due to reinforcing bar
It is unified whole with simulation shield duct piece 1, therefore acting on the power on reinforcing bar is minimum bonding force.By reinforcing steel bar bear by leading
Line conduction, is measured by force snesor 10 and is exported, and acquisition output numerical value obtains section of jurisdiction-ballast bed structure minimum bonding force.
The utility model fully considers influence of the effect of vibration to structure under tunnel operation condition, realizes under moving load condition
The measurement of minimum bonding force；Minimum bonding force, which is equivalent to train vibration, leads to interaction force between railway roadbed and tunnel segment structure,
Active force between structure is equivalent to reinforcing steel bar bear by arrangement instrument；Minimum bonding force is conducted to tunnel by conducting wire and pulley
Outside, it is measured by force snesor 10, suitable for studying the minimum bonding force of different shield tunnels.
Claims (5)
1. a kind of section of jurisdiction-railway roadbed minimum bonding force measurement device, which is characterized in that exist including simulation shield duct piece (1) and setting
Simulate the simulation railway roadbed (3) of shield duct piece (1) interior lower part；Partition is provided between simulation shield duct piece (1) and simulation railway roadbed (3)
(4)；It is additionally provided with one end and is fixed at lower end on the outside of simulation shield duct piece (1), the other end sequentially passes through simulation shield duct piece
(1), the fixed link (6) of partition (4) and simulation railway roadbed (3)；Conducting wire (9) one end is connected and fixed bar (6) upper end, and the other end successively passes through
Pulley (8), simulation shield duct piece (1) side wall of setting in simulation railway roadbed (3) are crossed, is connected to setting in simulation shield duct piece
(1) the fixation bracket (11) on the outside of；It is additionally provided in simulation railway roadbed (3) for providing the dynamic load device (2) for testing required dynamic load；
It is additionally provided with the force snesor (10) for acquiring conducting wire (9) pulling force.
2. a kind of section of jurisdiction according to claim 1-railway roadbed minimum bonding force measurement device, which is characterized in that the conducting wire
(9) it is connect by pretension bolt (12) with fixed bracket (11).
3. a kind of section of jurisdiction according to claim 1-railway roadbed minimum bonding force measurement device, which is characterized in that the simulation
The first sleeve (5) passed through for fixed link (6) is provided in railway roadbed (3).
4. a kind of section of jurisdiction according to claim 1-railway roadbed minimum bonding force measurement device, which is characterized in that the fixation
Bar (6) is prepared using reinforcing bar, and one end is fixed at simulation shield duct piece (1) outer wall by bolt (7).
5. a kind of section of jurisdiction according to claim 1-railway roadbed minimum bonding force measurement device, which is characterized in that the simulation
The second sleeve (13) passed through for conducting wire (9) is provided on shield duct piece (1) side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920238224.4U CN209542411U (en) | 2019-02-26 | 2019-02-26 | A kind of section of jurisdiction-railway roadbed minimum bonding force measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920238224.4U CN209542411U (en) | 2019-02-26 | 2019-02-26 | A kind of section of jurisdiction-railway roadbed minimum bonding force measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN209542411U true CN209542411U (en) | 2019-10-25 |
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| CN201920238224.4U Expired - Fee Related CN209542411U (en) | 2019-02-26 | 2019-02-26 | A kind of section of jurisdiction-railway roadbed minimum bonding force measurement device |
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| CN (1) | CN209542411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709034A (en) * | 2019-02-26 | 2019-05-03 | 西南交通大学 | A kind of section of jurisdiction-railway roadbed minimum bonding force measurement device and test method |
-
2019
- 2019-02-26 CN CN201920238224.4U patent/CN209542411U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709034A (en) * | 2019-02-26 | 2019-05-03 | 西南交通大学 | A kind of section of jurisdiction-railway roadbed minimum bonding force measurement device and test method |
| CN109709034B (en) * | 2019-02-26 | 2024-02-09 | 西南交通大学 | Minimum adhesion force measuring device and method for duct piece-track bed |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20210226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |