CN109115536A - A kind of shallow embedding pin-connected panel tunnel seam waterproof durability test device and test method - Google Patents
A kind of shallow embedding pin-connected panel tunnel seam waterproof durability test device and test method Download PDFInfo
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- CN109115536A CN109115536A CN201811212469.6A CN201811212469A CN109115536A CN 109115536 A CN109115536 A CN 109115536A CN 201811212469 A CN201811212469 A CN 201811212469A CN 109115536 A CN109115536 A CN 109115536A
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000011156 evaluation Methods 0.000 claims description 5
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- 238000003466 welding Methods 0.000 description 4
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- 230000000694 effects Effects 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000003278 mimic effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
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- 230000036506 anxiety Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000005641 tunneling Effects 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 invention discloses a kind of shallow embedding pin-connected panel tunnel seam waterproof durability test devices, and including the simulation box being made of bottom plate and side plate, the upper surface of simulation box is provided with reaction frame；It is provided with simulated formation in simulation box, simulation tunnel duct piece is provided in simulated formation；Simulating tunnel duct piece includes upper section of jurisdiction and lower section of jurisdiction, and upper section of jurisdiction and lower section of jurisdiction seam crossing are provided with displacement sensor；The vibration excitor that each lane position is provided with simulating vehicle dynamic load is corresponded in simulation tunnel duct piece；The actuator of reaction frame top beam position setting simulation surface car load, actuator lower part connects separation loading device；Separation loading device lower part is arranged in simulated formation upper surface, and load sharing point corresponds to vibration excitor position；Displacement sensor connects data acquisition device；The present invention can reflect the deformation of practical seam, and test result is made more to tally with the actual situation, and provide reliable demonstration for the waterproof durability of Practical Project.
Description
Technical field
The present invention relates to tunnel seam waterproof durability test device and methods, and in particular to a kind of shallow embedding pin-connected panel tunnel
Seam waterproof durability test device and test method.
Background technique
Percolating water is the first big persistent ailment built industry and be known as Tunnel Engineering, or even has the saying of " leakage of ten tunnels nine "；Water
Evil is often difficult to eradicate once being formed, and treatment cost is also larger；Traditional urban district under-traverse tunnel takes the mode of excavation and cast-in-place more
Construction, the construction method construction speed is slow, and the network of communication lines influence time of anxiety original to urban district is long；And since urban transportation is fast
Speed development, lead to construction quality to work to tight deadlines it is difficult to ensure that, leave numerous construction joints, according to statistics 60% Tunnel Water Leakage
From construction joint and subsiding crack.
Take element factory prefabricated, the street crossing tunneling method of assembled in situ assembly has obtained the generally favor of industry；
It since structure section is larger, is influenced by size and weight, structure must take precast block.Fabricated construction leak and shield
Tunnel is similar, is related to the various aspects such as environmental condition, segment conformation, sealing material, Construction Condition, but the leak of seam crossing rises mainly
Effect, therefore the waterproof of section of jurisdiction seam is research emphasis.
Such as a kind of test method (2017101379767) of shield tunnel segment joint percolating water, disclose by over the ground
Pre-buried water inlet pipe in the calibrated bolck of iron duct pieces of shield tunnel, to duct piece connector surface along gasket slot, perpendicular to gasket slot into
Row cutting is aided with hollow gasket, and being directly bolted using standard, carries out duct piece connector infiltration to form hollow water stopping trough
Leak test；It is vertically opened with horizontal direction hydraulic jack top power, simulation tunnel stress and connector by Controlling model；The test
Method has following obvious shortcoming: (1) pertaining only to the percolating water situation between two calibrated bolcks, rather than study entire shield tunnel
Deformation and percolating water behavior of the structure under self weight and external force, result and the actual percolating water behavior of shield tunnel have one
Make into；(2) percolating water behavior of the shield duct piece under action of static load is only simulated；(3) under-traverse tunnel shape in urban district is general
For rectangle, generally it is attached by way of through-hole bolt additional steel plates between piecemeal, or by the pre- of block margin
Steel plate is buried to be welded with additional steel plates；So this percolating water test method between two section of jurisdiction of shield tunnel is difficult to transport
Prefabricated assembled under-traverse tunnel is used in vehicular load leakage water test, and effective evaluation is carried out to it.
A kind of experimental rig (2018101957282) for simulating duct pieces of shield tunnel seam waterproof under seismic (seismal, it is public
The device opened, by the component laterally with the simulation section of jurisdiction changing of the relative positions of vertical servo actuator, is simulated each when earthquake using servo actuator
Kind segment joint opens and the waterproof test under changing of the relative positions form；The device is removed as follows: (1) using the two boards for having annular groove
Simulate tunnel duct piece seam, simulation be tunnel part situation；(2) earthquake load is the dynamic load of short time, and
Load mode and car load have significant difference.
Existing test method and device are concentrated mainly on duct pieces of shield tunnel seam for the research of tunnel seam waterproof
The waterproof performance under the effect of static load, seismic loading condition and short-term power, and model mainly considers the part of tunnel structure.It is main
Want defect to be: (1) partial model of seam is difficult to reflect stress deformation situation of the tunnel overall structure in practical structures, only
Joint open, magnitude of misalignment can artificially be adjusted by experimental provision, be differed farther out with the actual deformation of seam, is difficult anti-
The practical distortion of seam is reflected, and then is difficult true abutment joint waterproof performance and is tested and evaluated.(2) examining in loading condition
Consider aspect, only considers static load or earthquake load.For urban district shallow embedding pin-connected panel tunnel in ground and tunnel internal car load
The research for acting on lower seam waterproof durability is also seldom.
Summary of the invention
The present invention relates to one kind can really be reflected in ground and tunnel internal it is vehicle-mounted under, the deformation of tunnel seam, dislocation,
The basic condition of percolating water, and evaluate the shallow embedding pin-connected panel tunnel seam waterproof durability test dress of the waterproof durability of the structure
It sets and test method.
The technical solution adopted by the present invention is that: a kind of shallow embedding pin-connected panel tunnel seam waterproof durability test device, including
The upper surface of the simulation box being made of bottom plate and side plate, simulation box is provided with reaction frame；Simulated formation, mould are provided in simulation box
Simulation tunnel duct piece is provided in quasi- stratum；Simulation tunnel duct piece includes upper section of jurisdiction and lower section of jurisdiction, upper section of jurisdiction and lower segment joint
Place is provided with displacement sensor；The exciting that each lane position is provided with simulating vehicle dynamic load is corresponded in simulation tunnel duct piece
Device；The actuator of reaction frame top beam position setting simulation surface car load, actuator lower part connects separation loading device；Separation loading device lower part
It is arranged in simulated formation upper surface, load sharing point corresponds to vibration excitor position；Displacement sensor connects data acquisition device.
Further, the upper section of jurisdiction and the interior outside of lower section of jurisdiction seam crossing are provided with displacement sensor.
Further, observation is provided with on two opposite flanks of simulation tunnel duct piece vertical direction on the simulation box
Window.
Further, the observation window bezel locations are provided with U-type groove steel.
Further, the actuator and vibration excitor are all connected to control device.
Further, the installation in the middle part of seam direction of institute's displacement sensors is horizontal is arranged with vertical direction.
A kind of shallow embedding pin-connected panel tunnel seam waterproof durability test method, comprising the following steps:
Step 1: reduced scale being determined according to prototype size and testing stand size, simulation tunneltron is set according to reduced scale
Piece；
Step 2: simulation tunnel duct piece analog material and simulated formation analog material being determined according to similarity relation, pour simulation
Tunnel duct piece；
Step 4: configuration simulated formation, assembly simulation tunnel duct piece；Displacement sensor is mounted on seam crossing, simulated formation
Backfill, compacting are filled up；
Step 5: installation actuator and separation loading device simulate surface car load by actuator；
Step 6: installation vibration excitor, for simulating tunnel internal dynamic vehicle load；
Step 7: opening actuator and vibration excitor, actuator and vibration excitor power loading method are sine wave；
Step 8: seam crossing changing of the relative positions amount being acquired by data acquisition device, completes waterproof durability evaluation.
Further, the maximum value for determining changing of the relative positions amount in the step 8 in collected changing of the relative positions amount information, with shield tunnel
Road " shield method tunnel construction and acceptance criteria " compares；The structurally waterproof durability if changing of the relative positions amount maximum value is above standard value
It is undesirable；Structurally waterproof durability meets the requirements if changing of the relative positions amount maximum value is less than standard value.
The beneficial effects of the present invention are:
(1) present invention studies the waterproof durability of pin-connected panel tunnel seam using entire tunnel cross-section model, can be anti-
The deformation for reflecting practical seam, makes test result more tally with the actual situation, and provides reliably for the waterproof durability of Practical Project
Demonstration；
(2) present invention is carried by using power loading device simulating vehicle for ground and tunnel internal dynamic vehicle load
Lotus is capable of the true load of maximum model configuration, therefore the available result for meeting Practical Project as far as possible；
(3) it is able to reflect actual loading situation of the structure under self weight, stratum and inside and outside vehicular load, and can be really anti-
Reflect the opening/closing and changing of the relative positions situation of seam crossing；
Detailed description of the invention
Fig. 1 is experimental rig structural schematic diagram in the present invention.
Fig. 2 is test method flow diagram in the present invention.
In figure: 1- simulation box, 2- simulated formation, the upper section of jurisdiction 3-, 4- actuator, 5- separation loading device, section of jurisdiction under 6-, 7- exciting
Device, 8- displacement sensor.
Specific embodiment
The present invention will be further described in the following with reference to the drawings and specific embodiments.
Unless otherwise specified, term mentioned in the present invention is explained as follows:
Pin-connected panel tunnel: prefabricated tunnel is influenced since size is larger by transport limit, freight weight limit, can not be carried out whole pre-
System, and then carry out precast block；After precast plant makes piecemeal, piecemeal is transported into foundation pit scene, takes bolt or welding etc.
Mode is assembled one by one, after forming tunnel, carries out side soil and earthing backfills, restore traffic above-ground.
Ground on-vehicle: dead load and dynamic load as caused by tunnel upper road vehicle traveling.
It is internal vehicle-mounted: tunnel internal driving dead load and dynamic load caused by tunnel.
Percolating water tries durability test method: under self weight and ground on-vehicle long term, the waterproof performance of tunnel seam
Test method.
As shown in Figure 1, a kind of shallow embedding pin-connected panel tunnel seam waterproof durability test device, including by bottom plate and side plate structure
At simulation box 1, the upper surface of simulation box 1 is provided with reaction frame；Simulated formation 2 is provided in simulation box 1, in simulated formation 2
It is provided with simulation tunnel duct piece；Simulating tunnel duct piece includes upper section of jurisdiction 3 and lower section of jurisdiction 6, and upper section of jurisdiction 3 and lower 6 seam crossing of section of jurisdiction are set
It is equipped with displacement sensor 8；Outside is provided with displacement sensor 8 in upper section of jurisdiction 3 and lower 6 seam crossing of section of jurisdiction；And displacement sensing
The installation in the middle part of seam direction of device 8 is horizontal to be arranged with vertical direction；It is inside and outside and horizontal and vertical convenient for collecting simulation tunnel duct piece
The upward changing of the relative positions amount of histogram；The vibration excitor 7 that each lane position is provided with simulating vehicle dynamic load is corresponded in simulation tunnel duct piece；
The actuator 4 of reaction frame top beam position setting simulation surface car load, 4 lower part of actuator connects separation loading device 5；Under separation loading device 5
Portion is arranged in 2 upper surface of simulated formation, and load sharing point corresponds to 7 position of vibration excitor；Displacement sensor 8 connects data acquisition device.
Observation window is provided with on two opposite flanks of simulation tunnel duct piece vertical direction on simulation box 1；Observation window side
Frame position is provided with U-type groove steel；It is specific to be reinforced using No. 20 U-type groove steel, to increase its rigidity.Actuator 4 and vibration excitor 7
It is all connected to control device.
Actual tunnel is two-tube in the present invention, and every pipe is three lanes, and single tube span is 10m；One work is set on each pipe
Dynamic device 4 simulates surface car load；Separation loading device 5 is arranged in each 4 lower part of actuator, and there are three load sharing point, simulations three for separation loading device 5
Vehicular load on a lane；It is corresponding to install three vibration excitors 7 respectively on each pipe inner tunnel bottom plate, simulate tunnel internal
Dynamic vehicle load.
In the present invention tunnel developed width be 22m (include two abutment walls and interval wall thickness, two sidewall thicknesses are 0.75m,
For mid-board with a thickness of 0.6m, unidirectional tunnel inner width is 22/2-0.75-0.6/2=9.95m), highly (include top for 8.2m
Base plate thickness, thickness are 1m, and tunnel internal height is 8.2-1-1=6.2m)；Tunnel upper thickness of earth covering is 3m；Simulate tunnel
Road section of jurisdiction is divided into section of jurisdiction 3 and lower section of jurisdiction 6, intermediate to be attached with to wearing bolt.Simulation box 1 and reaction frame width are 3m, several
What likelihood ratio takes 10:1；Tunnels mimic size are as follows: long 2.2m, high 0.82m, longitudinal direction are to eliminate boundary effect, and be conducive to
Load balance takes 1m.
Tunnel duct piece is practical uses C50 concrete for simulation, and mechanics parameter is as shown in Table 3 and Table 4；Section of jurisdiction analog material uses
Gypsum base material show that the similarity relation of analog material and concrete need to meet the condition of table 3 according to the similarity relation of table 2；Most
The match ratio for obtaining the section of jurisdiction analog material of table 3 afterwards is water: gypsum: diatomite=1:1.2:0.1 (mass ratio)；Formation parameter and
Analog material compares as shown in table 5 and table 6, finally show that stratum analog material match ratio is river sand: quartz sand: flyash: machine
Oil=1.0:0.8:0.8:0.3 (mass ratio).
Table 2.C50 concrete mechanics parameter
The mechanics parameter of table 3. section of jurisdiction prototype and model
4. parameter equivalent of table and the material likelihood ratio design
The mechanics parameter of table 5. stratum prototype and model
6. parameter equivalent of table and the material likelihood ratio design
The determination of dynamic load(loading) amplitude: be to top road quality classification be city I grade, maximum load vehicle be 70T, according to
The similarity relation of power in table 1 is 1000:1, show that the amplitude of each lane load in ground is 700N；Tunnel internal forbids goods
Vehicle is current, and only quasi- car traveling, the car biggest quality are 2T；It is 1000:1 by the similarity relation of the power in table 1, show that ground is every
The amplitude of a lane load is 20N；Loading frequency calculates: car speed 80km/h, and tunnel width is 22 meters, by being practiced as
1s, actual frequency 1Hz；According to the frequency similarity relation in table 1 it is found that test loading frequency is 3.3Hz, 4Hz is actually taken.
The similarity relation of each physical quantity of table 1.
1 length direction of model casing is 3m, and longitudinal direction size consistent with tunnel model is 1m, is highly 0.82+0.18
+ 0.3=1.3m (0.82m is model height, and 0.18 is tunnel floor stratum, and 0.3 is thickness of earth covering)；Using steel plate (bottom plate iron
Plate thickness is 6mm, side wall thicknesses 2mm) it is fabricated to 3m × 1m × 1.3m uncovered cube；1 two pieces of front and back of test model case
The rectangular viewing aperture of plate cutting 205cm × 62cm；It is reinforced using No. 20 U-type groove steel；To increase its rigidity, entire model
Case 1 is connected by the way of welding.
7 range simulation tunnel duct piece abutment wall of vibration excitor is 0.15m, and the distance between adjacent vibration excitor 7 is 0.32m；Simulation
Six vibration excitors 7 are installed altogether inside tunnel duct piece；The power lotus of six, ground lane vehicle is provided using two actuator 4
It carries, 4 lower part of actuator is connect with separation loading device 5；There are three contact point, each each moulds in contact point with 2 top of stratum for each separation loading device 5
Vehicular load on a quasi- lane；Three contact points of separation loading device 5 carry out with the position of vibration excitor 7 corresponding respectively.
Using mold, material mixture ratio is according to gypsum: diatomite=1:1.2:0.1 (mass ratio) carries out section of jurisdiction and pours, and simulates
Tunnel duct piece longitudinal length is 1m；Upper section of jurisdiction 3 and lower section of jurisdiction 6 pour simultaneously, are demoulded within 24 hours after the completion of model pours, and take off
It is put into incubator after the completion of mould, drying 72 hours is carried out under conditions of 45 DEG C.
Using blender according to river sand: quartz sand: flyash: the proportion of machine oil=1.0:0.8:0.8:0.3 (mass ratio)
It carries out simulated formation 2 to configure, configuration amount 2.2m2.In place by the lifting of 1 bottom plate of model casing, being first welded into side plate height is 20cm
Steel tank, simulated formation 2 is laid in slot, is successively compacted in process of deployment, is flattened after being paved with；Lower section of jurisdiction 6 is hung
It is attached at each 1 side 40cm of distance model case in two sides, lower section of jurisdiction 6 lifts upper section of jurisdiction 3 after being installed in place, by seam link position
It is aligned with lower section of jurisdiction 6；After section of jurisdiction 3 and lower section of jurisdiction 6 are aligned on tunnel, it is attached with clamping plate and to bolt is worn；In simulation tunnel
The middle part of segment joint along the longitudinal direction is installed by horizontal and vertical direction displacement sensor 8.
1 positive and negative of model casing are welded with two sides, after welding, are backfilled with configured simulated formation 2, compacting
It fills up；Two actuator 4 are separately mounted at the 0.9m of reaction frame side, spacing is 1m between two actuator 4, then
4 piston stroke of actuator is retracted to 0, separation loading device 5 is connect with actuator 4.
Respectively arrange that three vibration excitors 7 simulate tunnel internal dynamic vehicle loads, exciting inside tunnel duct piece in each pipe simulating
Device 7 is arranged in tunnel axis middle position；The front and back that the centre distance model of vibration excitor 7 is thought is 0.5m, apart from side wall
0.15m, at a distance of 0.32m between adjacent vibration excitor 7.
Displacement sensor 8 is connect with data acquisition device, data acquisition device can connect computer；Actuator 4 and swash
Vibration device 7 connect with control device respectively, and when use, which carries out debugging first, ensures that performance is normal；Actuator 4 and vibration excitor 7 it is dynamic
Power loading method is sine wave, and the load amplitude of actuator 4 is 700N；The load amplitude of vibration excitor 7 is 20N, and frequency is
4Hz；If loading number according to this frequency than calculating, the load time should be the 1/4 of the practical active time in tunnel, Tunnel Design
Active time is 100 years, then the load time is 25 years, unrealistic；In experiment, load number 200 is determined according to fatigue test
Ten thousand times, calculating the load time accordingly is 5.8 days；Actuator 4 and vibration excitor 7 are opened, upper section of jurisdiction is carried out by displacement sensor 8
3 and lower 6 opening/closing of section of jurisdiction, the record of changing of the relative positions amount；Record opening/closing, the maximum value of changing of the relative positions amount, with shield tunnel " shield
Method constructing tunnel and acceptance criteria " it compares, and successively evaluation structure waterproof and durability.
In actual use, installation following steps operation:
S1: reduced scale is determined according to prototype size and testing stand size, actual tunnel is two-tube in the present invention, and every pipe is
Three lanes, single tube span are 10m；
S2: according to similarity relation, tunnel duct piece analog material and stratum analog material and its proportion are determined；
S3: according to similarity relation, ground dynamic vehicle load and tunnel internal dynamic vehicle load amplitude and frequency are determined；
S4: the material of model casing 1 is determined according to rigidity requirement；
S5: pouring simulation tunnel duct piece using high-precision mold, carries out demoulding after pouring, is conserved according to standard；
S6: during simulation tunnel duct piece is poured, conserved, simulated formation 2 is carried out according to the proportion of 2 material of simulated formation and is matched
It sets；
S7: after the maintenance of tunnels mimic section of jurisdiction is up to standard, being lifted, and carries out assembly after being lifted into model casing 1；
S8: check that seam contacts situation, can carry out in next step after up to standard after assembled；
S9: 1 plate-side plate welding of model casing is carried out；
S10: the displacement sensor 8 in outside in installation seam connects control device and is debugged after installation；
S11: simulated formation 2, including side soil and earthing are laid with；
S12: installing the actuator 4 of simulation surface car load in reaction frame top beam position, connection control equipment after installation
It is debugged；
S13: connecting separation loading device 5 below actuator 4, and there are three load sharing points for each separation loading device 5, simulate on three lanes
Vehicular load；
S14: three vibration excitors 7 are installed respectively on simulation tunnel duct piece bottom plate, simulate tunnel internal dynamic vehicle load；
S15: opening actuator 4 and vibration excitor 7 loads, while recording data；
S16: it is compared, evaluation structure according to test result and shield tunnel " shield method tunnel construction and acceptance criteria "
Waterproof durability.
The present invention is suitable for the waterproof endurance issues of drive under-traverse tunnel, is suitable for street crossing tunnel model test,
The examination that waterproof durability of the seam of the shallow embedding assembled tunnel piecemeal of proposition under surface car load long term proposes
Experiment device and test method；It can directly, really be reflected in seam under ground and tunnel internal car load long term
It opens, the relationship of the changing of the relative positions, the joint open and changing of the relative positions amount of seam under different load numbers is recorded in, further according to " shield method tunnel construction
Acceptance specification and standard " allow joint open and changing of the relative positions amount, shallow embedding pin-connected panel tunnel seam waterproof durability is evaluated.
No matter the size of practical pin-connected panel tunnel structure, is rationally contracted according to actual size and testing stand size
Ruler does not use the partial model in structure transverse face, can reflect reality of the structure under self weight, stratum and inside and outside vehicular load
Stress condition also can really reflect the opening/closing and changing of the relative positions situation of seam crossing.It is dynamic on tunnel top and internal setting simultaneously
Power device simulates surface car load with actuator to apply the dynamic loading of simulating vehicle load, can be with if lane is on the high side
It is corresponding ground vehicle by installing the position that load distributor load distributor lower part is contacted with stratum below actuator
Physical location saves experimentation cost to reduce the quantity of actuator；In tunnel internal using vibration excitor come simulating vehicle load,
Put a vibration excitor in each lane center position.(equipment of other similar simulating vehicle dynamic load(loading) also this patent protection it
Column).
Claims (8)
1. a kind of shallow embedding pin-connected panel tunnel seam waterproof durability test device, which is characterized in that including by bottom plate and side plate structure
At simulation box (1), the upper surface of simulation box (1) is provided with reaction frame；It is provided with simulated formation (2), simulates in simulation box (1)
Simulation tunnel duct piece is provided in stratum (2)；Simulation tunnel duct piece includes upper section of jurisdiction (3) and lower section of jurisdiction (6), upper section of jurisdiction (3) and
Lower section of jurisdiction (6) seam crossing is provided with displacement sensor (8)；Each lane position, which is corresponded to, in simulation tunnel duct piece is provided with simulation
The vibration excitor (7) of dynamic vehicle load；The actuator (4) of reaction frame top beam position setting simulation surface car load, under actuator (4)
Portion connects separation loading device (5)；Separation loading device (5) lower part is arranged in simulated formation (2) upper surface, and load sharing point corresponds to vibration excitor (7) position
It sets；Displacement sensor (8) connects data acquisition device.
2. a kind of shallow embedding pin-connected panel tunnel according to claim 1 seam waterproof durability test device, which is characterized in that
Outside is provided with displacement sensor (8) in the upper section of jurisdiction and lower section of jurisdiction seam crossing.
3. a kind of shallow embedding pin-connected panel tunnel according to claim 1 seam waterproof durability test device, which is characterized in that
Observation window is provided with on two opposite flanks of simulation tunnel duct piece vertical direction on the simulation box (1).
4. a kind of shallow embedding pin-connected panel tunnel according to claim 3 seam waterproof durability test device, which is characterized in that
The observation window bezel locations are provided with U-type groove steel.
5. a kind of shallow embedding pin-connected panel tunnel according to claim 1 seam waterproof durability test device, which is characterized in that
The actuator (4) and vibration excitor (7) are all connected to control device.
6. a kind of shallow embedding pin-connected panel tunnel according to claim 1 seam waterproof durability test device, which is characterized in that
Institute's displacement sensors (8) installation in the middle part of seam direction is horizontal to be arranged with vertical direction.
7. a kind of a kind of test side of shallow embedding pin-connected panel tunnel as described in claim 1 seam waterproof durability test device
Method, which comprises the following steps:
Step 1: reduced scale being determined according to prototype size and testing stand size, simulation tunnel duct piece is set according to reduced scale；
Step 2: simulation tunnel duct piece analog material and simulated formation (2) analog material being determined according to similarity relation, pour simulation
Tunnel duct piece；
Step 4: configuration simulated formation (2), assembly simulation tunnel duct piece；Displacement sensor (8) is mounted on seam crossing, simulation ground
Layer (2) backfill, compacting are filled up；
Step 5: installation actuator (4) and separation loading device (5) simulate surface car load by actuator (4)；
Step 6: installation vibration excitor (7), for simulating tunnel internal dynamic vehicle load；
Step 7: opening actuator (4) and vibration excitor (7), actuator (4) and vibration excitor (7) power loading method are sine wave；
Step 8: seam crossing changing of the relative positions amount being acquired by data acquisition device, completes waterproof durability evaluation.
8. a kind of shallow embedding pin-connected panel tunnel seam waterproof durability test method according to claim 1, which is characterized in that institute
State in step 8 and to determine the maximum value of changing of the relative positions amount in collected changing of the relative positions amount information, with shield tunnel " shield method tunnel construction with
Acceptance criteria " it compares；Structurally waterproof durability is undesirable if changing of the relative positions amount maximum value is above standard value；If changing of the relative positions amount
Maximum value is less than standard value, and then structurally waterproof durability meets the requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212469.6A CN109115536B (en) | 2018-10-18 | 2018-10-18 | Shallow-buried spliced tunnel joint waterproof durability test device and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212469.6A CN109115536B (en) | 2018-10-18 | 2018-10-18 | Shallow-buried spliced tunnel joint waterproof durability test device and test method |
Publications (2)
| Publication Number | Publication Date |
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| CN109115536A true CN109115536A (en) | 2019-01-01 |
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| 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 |
| CN115762314A (en) * | 2022-09-08 | 2023-03-07 | 防灾科技学院 | Assembled section of jurisdiction tunnel structure destruction device under fault macroseism effect is striden in simulation |
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Inventor after: Jin Zhiyi Inventor after: Lei Bo Inventor after: Li Yan Inventor after: Li Zongyang Inventor after: Pu Bingrong Inventor after: Chen Guilong Inventor after: Zhang Jin Inventor after: Zhao Qing Inventor after: Huang Xiaodong Inventor after: Qi Taiyue Inventor after: Liang Xiao Inventor after: Qin Shaojie Inventor after: Qian Wangping Inventor after: Yu Yangyang Inventor after: Ji Weidu Inventor after: Gong Yuchen Inventor after: Yi Haiyang Inventor before: Qi Taiyue Inventor before: Lei Bo Inventor before: Li Yan Inventor before: Li Zongyang Inventor before: Pu Bingrong Inventor before: Chen Guilong Inventor before: Zhang Jin Inventor before: Zhao Qing Inventor before: Huang Xiaodong Inventor before: Jin Zhiyi Inventor before: Liang Xiao Inventor before: Qin Shaojie Inventor before: Qian Wangping Inventor before: Yu Yangyang Inventor before: Ji Weidu Inventor before: Gong Yuchen Inventor before: Yi Haiyang |