CN208721478U - The vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads - Google Patents
The vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads Download PDFInfo
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- CN208721478U CN208721478U CN201821268558.8U CN201821268558U CN208721478U CN 208721478 U CN208721478 U CN 208721478U CN 201821268558 U CN201821268558 U CN 201821268558U CN 208721478 U CN208721478 U CN 208721478U
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000005341 toughened glass Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000011160 research Methods 0.000 abstract description 15
- 235000019198 oils Nutrition 0.000 description 7
- 238000013519 translation Methods 0.000 description 5
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- 239000004576 sand Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
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- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
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- 235000019476 oil-water mixture Nutrition 0.000 description 1
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- 239000000565 sealant Substances 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to technical field of civil engineering, the specially vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads, including vertically move overload component, steel structure model case, movable barricade and Powered Propulsion component；It further include fixed barricade, the front/rear end inside the steel structure model case is equipped with multiple card slots for inserting the fixed barricade；The activity barricade is located at the side that steel structure model case side is set as open, installs dynamic soil pressure meter along deep drilling on movable barricade, the Powered Propulsion component for realizing the different displacement models of the activity barricade conversion.This programme under vertical dynamic overload, so that carrying out the research of dynamic soil pressure influence on the soil body of different in width, compensates for the research blank spot influenced under dynamic overload on finite soil dynamic soil pressure by building model.
Description
Technical field
The utility model relates to technical field of civil engineering, the specially vertical dynamic lower finite soil dynamic soil pressure model that overloads
Device.
Background technique
In the design of the engineering structures such as barricade, abutment, foundation pit enclosure calculates, the determination of soil pressure is essential
Link.At present.The coulomb or Rankine's earth pressure theory being widely used in engineering practice, the soil body is semo-infinite after all assuming that wall
Body.With the extensive utilization of the underground space, underground structure is more and more intensive, and banketing before and after works is often finite soil,
Such as close on existing Basement pit supporting structure, the slope retaining wall for closing on bedrock surface, the narrow foundation pit supporting construction in subway station,
The soil body etc. between double-row pile；In addition, being limited in mountain highway, railway construction by orographic condition, it is often designed to half
Half digging roadbed is filled out, this cut-fill subgrades gear rolling earth behind retaining wall also belongs to finite soil.Finite soil under above-mentioned various operating conditions,
Its ground is high-speed railway or highway in many cases, is equivalent to and is applied with a dynamic overload on finite soil surface.
In terms of existing literature, researcher has carried out more theoretical research, experimental study and numerical value for finite soil
Simulation achieves research achievement more abundant, but research is all to concentrate on barricade deformation characteristic such as rigidity or flexible, gear mostly
The translation of the displacement model of wall such as barricade is rotated the bottom of around or is such as sticked around top rotation, finite soil width such as width ratio, packing property
Property the influence research to soil pressure of soil or the factors such as no-Co-alloy steel, non-limit state, nonlinear damage face.With high-speed railway and
The fast development of highway, railway and highway generate vertically dynamic overload effect to finite soil, and vertical dynamic overload is to different positions
The influence of soil pressure after the barricade of mode shifter can be used for studying the dynamic soil pressure value in the engineering practices such as pattern foundation pit supporting structure, but at present
The research device that not yet finite soil dynamic soil pressure is influenced under the vertical dynamic overload of discovery, so under studying a kind of vertical dynamic overload
Finite soil dynamic soil pressure model equipment has important theoretical research value and engineering significance.
Wherein, finite soil dynamic soil pressure includes the pressure of breaking ground under dynamic overload effect limit inferior state and non-limit state
Power.
Utility model content
The utility model is intended to provide the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads, and is existed by constructing model
Under vertical dynamic overload, so that carry out the research of dynamic soil pressure influence on the soil body of different in width, compensate under dynamic overload to having
Limit the research blank spot that soil body dynamic soil pressure influences.
The base case of the utility model: the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads, including vertically move
Overload component, steel structure model case, movable barricade and Powered Propulsion component；
The vertical dynamic overload component includes cylinder, loading plate and concrete face slab, and the output shaft of the cylinder is fixedly connected with institute
An end face of loading plate is stated, the other end dynamic action of loading plate is in the concrete face slab；
Front, top surface and the one side of the steel structure model case are opening, the positive open-mouth peace of steel structure model case
Equipped with transparent toughened glass；It further include fixed barricade, the front/rear end inside the steel structure model case is equipped with for inserting
Multiple card slots of the fixed barricade；
The activity barricade is located at the side that steel structure model case side is set as open, bores on movable barricade along depth
Dynamic soil pressure meter is installed in hole, the Powered Propulsion component for realizing the different displacement models of the movable barricade conversion.
The working principle of this base case: fixed barricade is inserted into card slot, the soil body that controllable steel structure model case is filled into
Width.Movable barricade is located at the side that steel structure model case is set as open, and movable barricade is for keeping out the soil body, then by vertical
Dynamic overload component applies vertical dynamic loads to the soil body, then passes through a variety of displacement moulds of Powered Propulsion component realization activity barricade
Formula, to simulate the dynamic soil pressure of the finite soil under dynamic overload effect of the practical barricade under vertical or heeling condition.Activity
After barricade keeps out the soil body, the dynamic soil pressure meter on movable barricade just carries out the test of intensity of pressure size.
This base case the utility model has the advantages that 1, this programme, which uses pneumatic shuttle, generates vertical dynamic overload, it is real to pass through cylinder
The research of the dynamic soil pressure of finite soil after wall under overload acts on now is moved, structure is simple, operates conveniently.
2, cylinder connects concrete face slab by loading plate, to increase the contact area connecting with concrete face slab, so that concrete face slab is dynamic
State effect is more firm.
3, the card slot and fixed barricade being arranged in steel structure model case, control the width of the soil body, can pass through different width
Model test of the height than under determines the boundary value of finite soil the ratio of width to height under dynamic overload condition, passes through multiple Experimental Comparison
Finite soil and infinite soil dynamic soil pressure intensity size and its changing rule high along wall are just realized in analysis.
4, dynamic soil pressure meter is installed on movable barricade, the size of dynamic pressure intensity can be obtained in real time, also penetrates steel construction
Land movement increases the morphological feature of process and the plane of fracture after the positive transparent toughened glass observation wall of model casing.
5, this programme further improves finite soil soil pressure distribution theory, is existed by the way that simulator is arranged to finite soil
Dynamic soil pressure intensity under dynamic overload effect is tested, horizontal for earth pressure theory development and engineering technology to mention
Height is of great significance.
Further, the Powered Propulsion component includes two groups of Powered Propulsion components, and two groups of Powered Propulsion components are separately connected
In the upper and lower part position of the movable barricade.
Two groups of Powered Propulsion components are set, and realization activity barricade occurs translation, passing-flow resistance and rotates 3 kinds of positions around wall bottom
Dynamic soil pressure research under mode shifter.When movable barricade needs are translatable, two groups of Powered Propulsion components are worked at the same time；Active catch
Powered Propulsion component not work when wall needs to rotate around wall bottom, positioned at the Powered Propulsion component operation on movable barricade top, lower part
Make；Powered Propulsion when movable barricade needs passing-flow resistance, positioned at the Powered Propulsion component operation of movable barricade lower part, top
Component does not work.
Further, the Powered Propulsion component uses motor gear bearing rotating device, the motor gear bearing rotation
Device includes motor, first gear, second gear, axis wheel, support and stress frame, the first tooth of output axis connection of the motor
Wheel, the first gear are engaged with second gear, and the second gear passes through the axis connection of bearing and axis wheel, the wheel of the axis wheel
Bias is hinged with connecting rod on end face, and one end of the stress frame and the free end of connecting rod are hinged, and the other end of stress frame is solid
Determine connection activity barricade；The support is equipped with for the perforative groove of stress frame.
Motor rotation drives first gear rotation, and first gear rotation drives second gear rotation, second gear rotation axis
Wheel rotation, since stress frame is limited by support, the rotation of axis wheel moves stress frame in the groove of support by connecting rod
It is dynamic.By the working principle of Powered Propulsion component, two groups of Powered Propulsion components are in different work post states, so that movable barricade
Translation is realized by stress frame, rotates the bottom of around or is rotated around top, structure is simple, and operation is easy.
It further, further include arc panel, the one side of the arc panel is plane, which is placed in steel structure model bottom
Face, the another side of arc panel are arcwall face, on the middle line for the arcwall face that the lower sideline of the activity barricade is placed in the arc panel,
The side of movable barricade is equipped with cutting, and the cutting is embedded in sealing joint strip.
Arc panel is designed under movable barricade bottom end, the side of movable barricade is equipped with sealing joint strip, and controllable activity barricade exists
Carry out the leakage sand problem under different displacement models.
It further, further include pneumatic supply, the piston that the pneumatic supply is used to control the cylinder does linear reciprocating motion.
Cylinder operation is controlled by pneumatic supply, moves back and forth state convenient for adjusting cylinder piston.
Further, the pneumatic supply includes air inlet pipe, escape pipe, air compressor machine, oil water separator, air pressure regulator, electromagnetism
The electric cabinet of valve and controlled by solenoid valve, air compressor machine connect the air inlet of oil water separator by tracheae, and oil water separator goes out
Port connects the air inlet of air pressure regulator by tracheae, and the gas outlet of air pressure regulator connects entering for solenoid valve by tracheae
Mouthful, the outlet of solenoid valve connects the air inlet of cylinder by air inlet pipe, and the exhaust outlet of solenoid valve connects cylinder by escape pipe
Gas outlet.
Pneumatic supply is to realize that air inlet and the outlet of cylinder, the piston for being finally reached cylinder do linear reciprocating motion.
It further, further include the removable station that can be turned to, the station is used to support vertical dynamic overload component, steel
Structure mould molding box and Powered Propulsion component.
The removable station that can be turned to facilitates this vertically to move the transfer for the lower finite soil dynamic soil pressure model equipment that overloads.
Detailed description of the invention
Fig. 1 is the schematic longitudinal section that the present embodiment vertically moves the lower finite soil dynamic soil pressure model equipment that overloads；
Fig. 2 is the structural schematic diagram of the pneumatic supply in the present embodiment.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description include: station 1, steel structure model case 2, steelframe 3, cylinder 4, loading plate 5,
Concrete face slab 6, card slot 7, movable barricade 8, axis wheel 9, second gear 10, motor 11, dynamical frame 12, first gear 13, support 14,
It is stress frame 15, arc panel 16, fixed barricade 17, air compressor machine 18, oil water separator 19, air pressure regulator 20, solenoid valve 21, automatically controlled
Case 22, air inlet pipe 23, escape pipe 24.
Embodiment is substantially as shown in Fig. 1: the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads, including station
1, vertical dynamic overload component, steel structure model case 2, movable barricade 8 and two groups of Powered Propulsion components.
Station 1 is used to support vertical dynamic overload component, steel structure model case 2 and Powered Propulsion component.In this implementation
It further include station 1 in example, station 1 is 600mm 1800mm long, high, width 650mm, and steelframe 3 and dynamical frame 12, which are located at, to be operated
On platform 1, four corners of 1 bottom surface of station are connected with universal wheel, so that it is dynamic to realize the vertical dynamic lower finite soil that overloads
Earth Pressure Models device is entirely placed on station 1, so that the model equipment is removable.
Vertical dynamic overload component includes that cylinder 4, loading plate 5 with the output shaft of cylinder 4 described in concrete face slab 6 are fixedly connected with carrying
One end face of plate 5, the other end of loading plate 5 are fixedly connected with the concrete face slab 6.
Vertical dynamic overload component further includes pneumatic supply, and the piston that pneumatic supply is used to control cylinder 4 does linear reciprocating motion.Such as
Shown in Fig. 2, pneumatic supply includes escape pipe 23, air inlet pipe 24, air compressor machine 18, oil water separator 19, air pressure regulator 20, solenoid valve
21 and by solenoid valve 21 control electric cabinet 22, air compressor machine 18 by tracheae connect oil water separator 19 air inlet, grease divide
Gas outlet from device 19 connects the air inlet of air pressure regulator 20 by tracheae, and the gas outlet of air pressure regulator 20 is connected by tracheae
The entrance of solenoid valve 21 is connect, the outlet of solenoid valve 21 connects the air inlet of cylinder 4, the exhaust outlet of solenoid valve 21 by air inlet pipe 24
The gas outlet of cylinder 4 is connected by escape pipe 23.Air compressor machine 18 generates compressed air, and compressed air is divided by oil water separator 19
After oil water mixture and impurity, compressed air is entered in air pressure regulator 20, and air pressure regulator 20 adjusts compressed air
After flow, then solenoid valve 21 is controlled by electric cabinet 22 and is powered and powers off, when solenoid valve 21 is powered, compressed gas is transported to gas
In cylinder 4, when solenoid valve 21 powers off, and the gas being discharged in cylinder 4, cylinder 4 realize that its piston is done by air inlet and outlet
Linear reciprocating motion.
Steel structure model case 2 be cuboid, long 1200mm, width 400mm, high 700mm, the front of steel structure model case 2,
Top surface and left side are opening, and the positive open-mouth of steel structure model case 2 is equipped with transparent toughened glass, and transparent toughened glass is thick
16mm, each face of remaining of steel structure model case 2 are steel plate, steel plate thickness 10mm.
It further include steelframe 3 and fixed barricade 17,3 thickness 16mm of steelframe, steelframe 3 is used to support steel structure model case 2.In this reality
Apply in example, fixed barricade 17 is the rectangle steel plate of thickness 10mm, high 600mm, width 400mm, inside steel structure model case 2 before
Rear end face is equipped with multiple card slots 7 for inserting fixed barricade 17, specifically, being welded with steel bar every 10cm on steelframe 3
It is allowed to form multiple card slots 7 inside steel structure model case 2, card slot 7 is arranged 7 pairs altogether, and 7 width of card slot is 11mm.
Movable barricade 8 is located at the side that 2 side of steel structure model case is set as open, and in the present embodiment, movable barricade 8 is
Thick 16mm rectangle steel plate, high 600mm, width 400mm install dynamic soil pressure meter along deep drilling on movable barricade 8, and power pushes away
Into component for realizing the conversion of the different displacement models of movable barricade 8, two groups of Powered Propulsion components are connected to active catch
The upper and lower part position of wall 8.Two groups of Powered Propulsion components are set, realization activity barricade 8 occur translation, passing-flow resistance and around
Dynamic soil pressure research in wall bottom rotation 3 under 8 displacement model of movable barricade.When the movable needs of barricade 8 are translatable, work at the same time
Two groups of Powered Propulsion components；Powered Propulsion component work when movable barricade 8 needs to rotate around wall bottom, positioned at movable 8 top of barricade
Make, the Powered Propulsion component of lower part does not work；Power when movable barricade 8 needs passing-flow resistance, positioned at movable 8 lower part of barricade
Propulsion assembly works, the Powered Propulsion component on top does not work.
Powered Propulsion component use motor gear bearing rotating device, motor gear bearing rotating device include motor 11,
First gear 13, second gear 10, axis wheel 9, support 14 and stress frame 15, the output axis connection first gear 13 of motor 11, the
One gear 13 is engaged with second gear 10, and second gear 10 is inclined on the wheel end face of axis wheel 9 by the axis connection of bearing and axis wheel 9
The heart is hinged with connecting rod, and one end of stress frame 15 and the free end of connecting rod are hinged, and the other end of stress frame 15 is fixedly connected with work
Dynamic barricade 8, wherein support 14 is " recessed " shape, and the bottom surface of support 14 is fixed on steelframe 3, and stress frame 15 is located at the recessed of support 14
In slot, 15 both ends of stress frame are stretched out outside the groove.It in this embodiment, further include the dynamical frame 12 for placing two groups of Power Components,
Dynamical frame 12 is cuboid chan frame structure, long 65mm, width 40mm, high 65mm, the wide 50mm of the channel steel of the frame, thickness
30mm。
It further include arc panel 16, arc panel 16 is the stainless steel plate of 20mm thickness, high 40mm, width 136mm, arc panel 16
It is on one side plane, which is placed in 2 bottom surface of steel structure model case, and the another side of arc panel 16 is arcwall face, under movable barricade 8
Sideline is placed on the middle line of the arcwall face of arc panel 16, and the side of movable barricade 8 is equipped with cutting, which is embedded in sealant
Item.Arc panel 16 is designed under movable 8 bottom end of barricade, the side of movable barricade 8 is equipped with sealing joint strip, and controllable activity barricade 8 exists
Carry out the leakage sand problem under different displacement models.
Specific implementation process is as follows: fixed barricade 17 is inserted into card slot 7, the soil body that controllable steel structure model case 2 is filled into
Width.Movable barricade 8 is located at the side that steel structure model case 2 is set as open, then movable barricade 8 passes through for keeping out the soil body
The vertical dynamic overload component soil body applies downward pressure.Pass through the displacement model of Powered Propulsion component realization activity barricade 8 again, with
The practical barricade under vertical or heeling condition is simulated under dynamic overload effect to the dynamic soil pressure of finite soil, specifically,
The rotation of motor 11 drives first gear 13 to rotate, and the rotation of first gear 13 drives second gear 10 to rotate, and second gear 10 rotates
Axis wheel 9 rotates, and since stress frame 15 is limited by support 14, the rotation of axis wheel 9 makes stress frame 15 in support by connecting rod
It is moved in 14 groove.By the working principle of Powered Propulsion component, two groups of Powered Propulsion components in different work post states,
So that movable barricade 8 realizes translation by stress frame 15, rotates the bottom of around or rotate around top.It is living after movable barricade 8 keeps out the soil body
Dynamic soil pressure meter on dynamic barricade 8 just carries out the test of intensity of pressure size.In the present solution, vertically being moved by constructing model
Under overload, so that carrying out the research of dynamic soil pressure influence on the soil body of different in width, compensate under dynamic overload to finite soil
The research blank spot that dynamic soil pressure influences further improves finite soil soil pressure distribution theory, has important theoretical value
With engineering significance.
Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme
It does not describe excessively, the affiliated technology neck of utility model before one skilled in the art know the applying date or priority date
All ordinary technical knowledges in domain can know the prior art all in the field, and have using normal before the date
The ability of laboratory facilities is advised, one skilled in the art can be complete in conjunction with self-ability under the enlightenment that the application provides
It is apt to and implements this programme, it is real that some typical known features or known method should not become one skilled in the art
Apply the obstacle of the application.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence
The effect and patent practicability that the utility model is implemented.This application claims protection scope should be with the content of its claim
Subject to, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (7)
1. the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads, it is characterised in that: including vertically moving overload component, steel knot
Structure model casing (2), movable barricade (8) and Powered Propulsion component；
The vertical dynamic overload component includes cylinder (4), loading plate (5) and concrete face slab (6), and the output shaft of the cylinder (4) is solid
Surely an end face of the loading plate (5) is connected, the other end dynamic action of loading plate (5) is in the concrete face slab (6)；
Front, top surface and the one side of the steel structure model case (2) are opening, steel structure model case (2) positive open-mouth
Transparent toughened glass is installed；It further include fixed barricade (17), the internal front/rear end of the steel structure model case (2) is equipped with
For inserting multiple card slots (7) of the fixed barricade (17)；
The activity barricade (8) is located at the side that steel structure model case (2) side is set as open, edge on movable barricade (8)
Deep drilling installs dynamic soil pressure meter, the Powered Propulsion component for realizing the movable barricade (8) different displacement models
Conversion.
2. the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads according to claim 1, it is characterised in that: described
Powered Propulsion component includes two groups of Powered Propulsion components, and two groups of Powered Propulsion components are connected to the movable barricade (8)
Upper and lower part position.
3. the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads according to claim 2, it is characterised in that: described
Powered Propulsion component uses motor gear bearing rotating device, and the motor gear bearing rotating device includes motor (11), the
One gear (13), second gear (10), axis wheel (9), support (14) and stress frame (15), the output axis connection of the motor (11)
First gear (13), the first gear (13) are engaged with second gear (10), and the second gear (10) passes through bearing and axis
The axis connection of (9) is taken turns, bias is hinged with connecting rod, one end of the stress frame (15) and company on the wheel end face of the axis wheel (9)
The free end of extension bar is hinged, and the other end of stress frame (15) is fixedly connected with movable barricade (8)；The support (14) is equipped with for stress
Frame (15) perforative groove.
4. the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads according to claim 3, it is characterised in that: also wrap
The one side of bracket plate (16), the arc panel (16) is plane, which is placed in steel structure model case (2) bottom surface, arc panel
(16) another side is arcwall face, and the lower sideline of the activity barricade (8) is placed in the middle line of the arcwall face of the arc panel (16)
On, the side of movable barricade (8) is equipped with cutting, and the cutting is embedded in sealing joint strip.
5. the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads according to claim 1 or 4, it is characterised in that:
It further include pneumatic supply, the piston that the pneumatic supply is used to control the cylinder (4) does linear reciprocating motion.
6. the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads according to claim 5, it is characterised in that: described
Pneumatic supply includes air inlet pipe (23), escape pipe (24), air compressor machine (18), oil water separator (19), air pressure regulator (20), electromagnetism
Valve (21) and by solenoid valve (21) control electric cabinet (22), air compressor machine (18) by tracheae connect oil water separator (19) into
Port, air inlet of the gas outlet of oil water separator (19) by tracheae connection air pressure regulator (20), air pressure regulator (20)
Gas outlet by the entrance of tracheae connection solenoid valve (21), the outlet of solenoid valve (21) connects cylinder by air inlet pipe (23)
(4) air inlet, the gas outlet that the exhaust outlet of solenoid valve (21) passes through escape pipe (24) connection cylinder (4).
7. the vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads according to claim 4 or 6, it is characterised in that:
It further include the removable station (1) that can be turned to, the station (1) is used to support vertical dynamic overload component, steel structure model
Case (2) and Powered Propulsion component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821268558.8U CN208721478U (en) | 2018-08-08 | 2018-08-08 | The vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821268558.8U CN208721478U (en) | 2018-08-08 | 2018-08-08 | The vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721478U true CN208721478U (en) | 2019-04-09 |
Family
ID=65976593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821268558.8U Expired - Fee Related CN208721478U (en) | 2018-08-08 | 2018-08-08 | The vertical dynamic lower finite soil dynamic soil pressure model equipment that overloads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208721478U (en) |
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2018
- 2018-08-08 CN CN201821268558.8U patent/CN208721478U/en not_active Expired - Fee Related
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