CN109024495A - A kind of double-layer air bag power device - Google Patents
A kind of double-layer air bag power device Download PDFInfo
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- CN109024495A CN109024495A CN201810783362.0A CN201810783362A CN109024495A CN 109024495 A CN109024495 A CN 109024495A CN 201810783362 A CN201810783362 A CN 201810783362A CN 109024495 A CN109024495 A CN 109024495A
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- air bag
- steel plate
- double
- movable steel
- layer air
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/005—Deformable barrages or barrages consisting of permanently deformable elements, e.g. inflatable, with flexible walls
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a kind of double-layer air bag power device, including double-layer air bag and air-charging and air-discharging system, air-charging and air-discharging system is for controlling the inflatable and deflatable of double-layer air bag；The lower section of movable steel plate is arranged in double-layer air bag, and movable steel plate can slide, and slip angle is 0 ~ 50 °；Movable steel plate is hinged with mat foundation；One end of double-layer air bag is anchored on mat foundation；Double-layer air bag includes stacking the inner bladder placed and balloon outer；The bottom connection of the top of inner bladder and movable steel plate touches, and the bottom of balloon outer is in contact with inclined-plane or base foundation；Inner bladder and the length of balloon outer are 0.95 ~ 1 times of movable steel plate length, and the width of inner bladder and balloon outer is 0.8 ~ 0.9 times of movable steel plate width.The present invention can be such that air bag inflationtime shortens, and air bag intraluminal pressure becomes smaller, and safe operation coefficient improves.
Description
Technical field
The present invention relates to geotechnical engineering and modeling techniques field of preventing and reducing natural disasters, especially a kind of double-layer air bag power dress
It sets.
Background technique
Currently, being tested in gentle shield dam on landslide, generally use using jack etc. as power device, also has using single
Layer air bag be used as power device, however, the operating pressure of single layer air bag be 0.7-0.8Mpa, 8 kilograms of design safety inflation pressure.
It is run according to many years, single layer air bag connects that true area is smaller, and stability is poor with steel plate, connects that true face pressure is powerful, and pressure is excessive part
The danger of breakdown, and aeration speed is slower.
Summary of the invention
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a kind of double-layer air bag power
Device, the double-layer air bag power device can realize that connecing true face greatly increases, operation is flat above and below movable steel plate in operational process
Surely, maximum working pressure (MWP) reaches 1.0Mpa, and up to 10 kilograms, aeration speed is greatly speeded up safe inflation pressure, realizes safety, height
Effect, even running, largely save the human and material resources and financial resources of later maintenance.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of double-layer air bag power device, including double-layer air bag and air-charging and air-discharging system, air-charging and air-discharging system is for controlling double-layer air bag
It is inflatable and deflatable.
The lower section of movable steel plate is arranged in double-layer air bag, and movable steel plate can be along the cambered surface sliding of setting, and slip angle is 0
~50°；One end of movable steel plate is hinged with mat foundation.
One end of double-layer air bag is anchored on mat foundation.
Double-layer air bag includes stacking the inner bladder placed and balloon outer；The bottom at the top of inner bladder and movable steel plate
Portion is in contact, and the bottom of balloon outer is in contact with inclined-plane or mat foundation.
Inner bladder and the length of balloon outer are 0.95 ~ 1 times of movable steel plate length, inner bladder and balloon outer
Width is 0.8 ~ 0.9 times of movable steel plate width.
Inner bladder and the length of balloon outer are 0.988 times of movable steel plate length.
The width of inner bladder and balloon outer is 0.848 times of movable steel plate width.
The side that movable steel plate is in contact with interior air bag is covered with the material for reducing coefficient of friction.
Inner bladder and the maximum pressure-bearing of balloon outer are 1.0MPa.
The slip angle of movable steel plate is 49.7 °.
The design of double-layer air bag in the present invention is not the simple superposition of single layer air bag, is repeated several times by applicant
It tests and calculates and obtain, compared with single layer air bag, have the following beneficial effects:
1. air bag inflationtime shortens.It was shortened to 9 minutes under idle running state by 25 minutes of single layer air bag；Movable steel plate liter
To operating position (air bag internal pressure is 0.01MPa), positioning pin is locked.It is real to carry under operating status, it was contracted by 55 minutes of single layer air bag
It is short to 33 minutes.
2. air bag intraluminal pressure becomes smaller.Under idle running state: air bag internal pressure is reduced to by the 0.1mpa of single layer air bag
0.01mpa；Movable steel plate rises to operating position, and positioning pin is locked.Real to carry under operating status: air bag internal pressure is by single layer air bag
0.6mpa is reduced to 0.2mpa or so.
3. being safely operated coefficient to improve.When using single layer air bag, operating pressure is larger, can reach 0.6mpa, and easily shape
At bias, air bag internal pressure is larger, once air bag pressure-bearing is not enough exploded, consequence is than more serious.The present invention, using double-layer air bag
Afterwards, as long as air bag operating pressure maximum 0.2mpa, greatly reduces safe operation risk.
4. the true face that connects of air bag and steel plate greatly increases, length becomes b from a, and air bag stress point pressure reduces.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of double-layer air bag power device in the present invention.
Fig. 2 shows structural schematic diagram when assuming using single layer air bag.
Fig. 3 shows the structural representation before a kind of landslide simulation test device landslide for emergency flood fighting rehearsal of the present invention
Figure.
Fig. 4 shows the structural representation behind a kind of landslide simulation test device landslide for emergency flood fighting rehearsal of the present invention
Figure.
Fig. 5 shows structural schematic diagram of the double-layer air bag power device of the present invention on gas shield dam.
Wherein have:
10. fixation steel plate；11. drainage pipe；20. pressurizing device；21. connecting tube；22. valve；30. movable steel plate；31. hinged
Point；40. earth material；41. outer slope；50. top of the slope supports；60. bottom of slope supports；70. come down power device；Air bag in 71.；72. outer gas
Capsule；73. anchor point；74. gas tube one；75. gas tube two；76. air pump one；77. air pump two；80. accumulator tank；81. cambered surface；
82. inclined-plane；90. Dun Qiang；91. reinforced concrete bottom plate；92. limiting cambered surface.
Specific embodiment
Xia Mianjiehefutuhejuti compare Jia Shishifangshiduibenfamingzuojinyibuxiangxishuoming.
Embodiment 1: application example of the double-layer air bag power device in the simulation test device of landslide
As shown in figure 3, a kind of landslide simulation test device for emergency flood fighting rehearsal, including fixation steel plate 10, drainage pipe
11, pressurizing device 20, movable steel plate 30, top of the slope support 50, bottom of slope support 60, landslide power device 70 and accumulator tank 80.
Fixation steel plate inclination fixed setting, and slope ratio is 1:1, the top of fixation steel plate is in contact with top of the slope support, top of the slope
Support level fixed setting.
Several drainage pipes are embedded on fixation steel plate, every drainage pipe is connected with pressurizing device.
Pressurizing device is connected by connecting tube 21 with every drainage pipe, for providing pressure to every drainage pipe
Water is provided with valve 22 on pressurizing device, and the water pressure for the pressure water that pressure apparatus is provided to drainage pipe is preferably shorter than
25kPa。
Movable steel plate can be rotated by landslide power device, and the rotatably mounted end of movable steel plate is towards fixation steel plate
Bottom end direction, the hinged end of movable steel plate and bottom of slope support or mat foundation be hinged, and has a hinge joint 31.
Bottom of slope support level is fixed at the side of movable steel plate hinged end.
Accumulator tank is the fan-shaped taper groove body in section, and accumulator tank includes cambered surface 81, inclined-plane 82 and vertical lateral part surface.
Inclined-plane is obliquely installed, and is located at the lower section of movable steel plate, and the top on inclined-plane is corresponding with the movable hinged end of steel plate,
The angle that inclined-plane and horizontal plane are in is 49 ~ 50 °, preferably 49.7 °.
The bottom end of cambered surface is connected with the bottom end on inclined-plane, and the top of cambered surface is connected with the bottom end of fixation steel plate；Movable steel
The rotatably mounted end of plate can be slided along cambered surface；Vertical lateral part surface is fanning strip, and cambered surface is connected with inclined-plane, is formed open-topped
Taper groove body.
As shown in figure 3, earth material is deposited in top of the slope support, fixation steel plate, movable steel when movable steel plate turns to horizontality
The top of plate and bottom of slope support, forms initial ramp, and the outer slope ratio of initial ramp is 1:2.
Above-mentioned earth material is preferably flour sand, and the infiltration coefficient of flour sand is preferablyi×10-4Cm/s,iTake between 1 to 9 it is any from
So number.
As shown in figure 4, the part earth material in initial ramp slides into accumulator tank when movable steel plate turns to inclined-plane,
Slopes after landing are to slide slopes, and the outer slope ratio for sliding slopes is 1:0.7.
External friction coefficient is first increases and then decreases with the increase of water content of soil, that is, there is an optimum moisture content, this
When interface external friction coefficient it is maximum, when the soil body is in a saturated state, external friction coefficient is minimum.The failure mode of this model is
Along the sliding of the soil body and steel plate contact surface, landslide whether can occur and destroy with the angle of external friction with significant relationship, it is logical before testing
The drainage hole crossed at the top of steel plate make it is in a saturated state with the soil body of steel plate contact site, thus be easier to realize landslide.
Above-mentioned landslide power device preferably has the following two kinds embodiment.
Embodiment 1: landslide power device is jack.
Embodiment 2: landslide power device is preferably double-layer air bag power device of the invention, including double-layer air bag and charge and discharge
Gas system, air-charging and air-discharging system is for controlling the inflatable and deflatable of double-layer air bag.
The lower section of movable steel plate is arranged in double-layer air bag, and movable steel plate can be along the cambered surface sliding of setting, wherein setting cambered surface
For the cambered surface in accumulator tank, and slip angle is 0 ~ 50 °, preferably 49.7 °.
Accumulator tank also has the inclined-plane limited to movable steel plate slip angle, movable steel plate and bottom of slope support or bottom plate
Basis is hinged.
One end of double-layer air bag is anchored on bottom of slope support or mat foundation, and anchor point 73 is preferably placed at hinge joint 31
Underface.
As shown in Figure 1, double-layer air bag includes stacking the inner bladder 71 placed and balloon outer 72；The top of inner bladder
It is touched with the bottom connection of movable steel plate, the bottom of balloon outer is in contact with inclined-plane.
Inner bladder and the length of balloon outer are 0.95 ~ 1 times of movable steel plate length, inner bladder and balloon outer
Width is 0.8 ~ 0.9 times of movable steel plate width.
Further, inner bladder and the length of balloon outer are preferably 0.988 times of movable steel plate length, inner bladder and
The width of balloon outer is preferably 0.848 times of movable steel plate width.
In Fig. 1, the width of a expression activity steel plate, b indicates that the width of double-layer air bag, c indicate the stress brachium of double-layer air bag
Degree.
The side that the side and/or inclined-plane that movable steel plate is in contact with interior air bag are in contact with outer air bag is preferably coated with drop
The material of low-friction coefficient；The material for reducing coefficient of friction is preferably stainless steel plate.
Inner bladder and the maximum pressure-bearing of balloon outer are preferably 1.0MPa.
The design of double-layer air bag in the present invention is not the simple superposition of single layer air bag, is repeated several times by applicant
It tests and calculates and obtain.
When landslide power device is assumed to be single layer air bag, as shown in Fig. 2, d indicates the width of single layer air bag, e table in Fig. 2
Show single layer air bag by torque arm length.
Compared with single layer air bag, the invention has the following beneficial effects:
1. air bag carries, pressure is small, and safe operation coefficient improves.After double capsule structures, the utricule of double-layer air bag and movable steel plate
Contact surface coincide property greatly improve, landing stability also greatly improves.Especially length direction contacts practical contact length and increases
Add, the overturning of entire movable steel plate is substantially improved for resisting the force unbalance ability that top earthing is unevenly formed.
Concrete analysis are as follows:
As shown in Fig. 2, extension space is excessive when single layer air bag works, misfitted with the contact surface of movable steel plate, and contact area
It is too small, when single layer air bag jack-up activity steel plate to horizontal position, do not only have 1/3 not with movable steel plate width direction contact area
It arrives, and is located at arm of force starting point；Length direction is movable steel plate since single layer air bag inflates the circular arc to be formed, practical and activity
Steel plate contact length is about movable steel plate length 2/3 or so.
By above-mentioned calculating, single layer air bag and movable steel plate real contact area are about movable steel plate suqare 2/9 or so, and by
It is shorter in the arm of force, and movable steel plate stress is then conversely, because the reason of earthing structure, stress center of gravity is biased to distal end, so it is single
The actual bearer pressure of layer air bag is bigger, can reach 0.6mpa, and easily form bias, air bag internal pressure is larger, and air bag is once held
Pressure is not enough exploded, and consequence is than more serious.
As shown in Figure 1, double-layer air bag and movable steel plate width direction contact area account for 3/5 or more, length direction
Reach 4/5 or more, the stress arm of force of double-layer air bag is real positioned at the immediate vicinity namely double-layer air bag of movable steel plate and movable steel plate
Border contact area is about the half of movable steel plate suqare, so border carrying pressure is small, as long as air bag operating pressure maximum 0.2mpa,
Greatly reduce safe operation risk, in addition, the maximum bearing capacity of double-layer air bag increases, 1.0mpa can be reached.
2. air bag inflationtime shortens.It was shortened to 9 minutes under idle running state by 25 minutes of single layer air bag；Movable steel
Plate rises to equilbrium position (air bag internal pressure is 0.01MPa), and positioning pin is locked.It is real to carry under operating status, by 55 points of single layer air bag
Clock shortens to 33 minutes；Movable steel plate is raised to set angle, and positioning pin detaches, and starts to carry out landslide rehearsal debugging.
3. air bag intraluminal pressure becomes smaller.Under idle running state: air bag internal pressure is reduced to by the 0.1mpa of single layer air bag
0.01mpa；Movable steel plate rises to equilbrium position, and positioning pin is locked.Real to carry under operating status: air bag internal pressure is by single layer air bag
0.6mpa is reduced to 0.2mpa or so；Movable steel plate is raised to set angle, and positioning pin detaches, and starts to carry out landslide rehearsal tune
Examination.
4. the design of double-layer air bag of the present invention promotes sealing, and prevents the possibility of partial breakdown.
5. the increase of above-mentioned reduction friction coefficient material and hinge joint are separated with anchor points, therefore are filled in double-layer air bag
During swollen, especially movable steel plate restores after falling into hole bottom to horizontal position, double-layer air bag utricule and movable steel plate
Between will form displacement friction, reduce friction coefficient material increase after, action process can be made more smooth, and be greatly reduced due to
The abrasion of air bag caused by rubbing.
A kind of landslide simulation experiment method for emergency flood fighting rehearsal, includes the following steps.
Step 1, landslide simulation test device is built: piling up section is fan-shaped accumulator tank, and accumulator tank includes cambered surface and tiltedly
Face, the tilt angle on inclined-plane are 49 ~ 50 °, preferably 49.7 °.Fixation steel plate inclination fixed setting, and slope ratio is 1:1, fixed steel
The top of plate is in contact with top of the slope support, the fixed setting of top of the slope support level；Drainage pipe and pressurizing device on fixation steel plate
It is connected；Valve in pressurizing device is in close state；The hinged end of movable steel plate is supported with bottom of slope or mat foundation is mutually cut with scissors
It connects, movable steel plate is in horizontal lock state, the rotatably mounted end of movable steel plate and fixation under the action of coming down power device
The bottom connection of steel plate touches.
In this step, landslide power device is preferably double-layer air bag and air-charging and air-discharging system, and double-layer air bag is in inflated condition,
The internal pressure of double-layer air bag is 0.2mpa.
Step 2, Landslide Model constructs: stacking soil in the top of top of the slope support, fixation steel plate, movable steel plate and bottom of slope support
Material, forms initial ramp, and the outer slope ratio of initial ramp is 1:2.
Earth material is preferably flour sand, and the infiltration coefficient of flour sand isi×10-4Cm/s,iTake the random natural number in 1 to 9.Test
Under the conditions of, due to the relatively slow edge of the side slope of initial ramp and there is enough stabilizations under the support of fixation steel plate and movable steel plate
Property, it will not come down.
Step 3, earth material is saturated: the valve of pressurizing device is opened, and by drainage pipe, proposes pressure supply water to earth material, make with
The earth material that fixation steel plate is in contact is in a saturated state.
Pressurizing device is 30 minutes or so to the control of the water flowing time of earth material, can make the soil positioned at fixation steel plate top 2cm
Expect in a saturated state.The critical ratio of flour sand is dropped less than 1, and to prevent flour sand from seepage failure occurs, water pressure should be lower than 25kPa.
Step 4, come down simulation test: movable steel plate releases horizontal lock state, under the action of coming down power device to
Lower rotation, until parallel with the inclined-plane of accumulator tank；The part during rotation of movable steel plate, above movable steel plate
Earth material slides into accumulator tank along the cambered surface of accumulator tank and the upper surface of movable steel plate, forms landslide；Slopes after landing are
Slopes are slid, the outer slope ratio for sliding slopes is 1:0.7.
The soil body of model lower part is displaced downwardly together with movable steel plate and slides after movable steel plate rotates down certain angle
Enter accumulator tank, at this time the soil body on model top be in face dummy status also will occur along slide and slide into accumulator tank, that is, generate landslide
Phenomenon.In process of landslides, the soil body can disintegrate to the two sides of its glide direction, be disintegrated.Disintegration, disintegration degree and the structure of slide mass
It is related at the factors such as the material of slide mass, structure and preparation.It is higher than the reinforcing bar of design side slope due to building in movable steel plate two sides
Concrete protection wall, and the soil body to glide slides into accumulator tank, although therefore gliding mass is huge, but not cause casualties.
In step 4, by the decrease speed of control landslide power device, and then landslide rate is controlled, drilled for emergency flood fighting
Practice and certain reaction time is provided.
Step 5, landslide emergency flood fighting rehearsal.
Step 6, Landslide Model restores: movable steel plate is rotated up under the action of coming down power device to horizontality
And lock, so that the earth material being located in accumulator tank is left accumulator tank, formed and restore initial ramp, to restore the outside of initial ramp into
Row is smooth, makes the outer slope ratio 1:2 for restoring initial ramp.
After the completion of the test of landslide, movable steel plate is jacked up upwards using jack, recycling groove groove wall and bottom and equally building has
Armored concrete, cambered surface just permission activity steel plate are rotated down, and the maximum on inclined-plane and movable steel plate is rotated down operating condition phase
Agree with.Ensure that nearly all downslide soil body is all ejected accumulator tank.Horizontal position is turned again to movable steel plate, slightly
Next group of landslide experiment can be carried out after smooth outer side slope.
The demonstration that the present embodiment 1 comes down especially suitable for soil-slope, while being opened for the motor-driven professional contingent that speedily carries out rescue work of flood control
Exhibition landslide disaster training and landslide disaster are speedily carried out rescue work rehearsal.
Embodiment 2: application example of the double-layer air bag power device in gas shield dam
As shown in figure 5, double-layer air bag power device is arranged on mat foundation, double-layer air bag power device two sides are pier wall 90.
Wherein, mat foundation is reinforced concrete bottom plate 91, and limit cambered surface 92 is provided on the Dun Qiang of two sides.
Double-layer air bag power device includes double-layer air bag and air-charging and air-discharging system, and air-charging and air-discharging system is for controlling double-layer air bag
It is inflatable and deflatable.
Double-layer air bag is arranged in the lower section of movable steel plate, and movable steel plate can be along setting cambered surface sliding, wherein set cambered surface as
Cambered surface is limited, and slip angle is 0 ~ 50 °, preferably 49.7 °.
Movable steel plate is hinged with mat foundation.
One end of double-layer air bag is anchored on mat foundation, and anchor point 73 is preferably placed at the inside of hinge joint 31.
Double-layer air bag includes stacking the inner bladder 71 placed and balloon outer 72；The top of inner bladder and movable steel plate
Bottom connection touching, the bottom of balloon outer is in contact with mat foundation.
Inner bladder and the length of balloon outer are 0.95 ~ 1 times of movable steel plate length, inner bladder and balloon outer
Width is 0.8 ~ 0.9 times of movable steel plate width.
Air-charging and air-discharging system includes gas tube 1, gas tube 2 75, air pump 1 and air pump 2 77, and air pump one passes through inflation
The inside air bag of pipe one carries out inflation/deflation, and air pump two-way overcharges the outside air bag of tracheae two and carries out inflation/deflation.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail a variety of equivalents can be carried out to technical solution of the present invention within the scope of the technical concept of the present invention, this
A little equivalents all belong to the scope of protection of the present invention.
Claims (6)
1. a kind of double-layer air bag power device, it is characterised in that: including double-layer air bag and air-charging and air-discharging system, air-charging and air-discharging system is used for
Control the inflatable and deflatable of double-layer air bag；
Double-layer air bag is arranged in the lower section of movable steel plate, movable steel plate can along the cambered surface sliding of setting, and slip angle be 0 ~
50°；One end of movable steel plate is hinged with mat foundation；
One end of double-layer air bag is anchored on mat foundation；
Double-layer air bag includes stacking the inner bladder placed and balloon outer；The bottom phase at the top of inner bladder and movable steel plate
Contact, the bottom of balloon outer is in contact with inclined-plane or mat foundation；
Inner bladder and the length of balloon outer are 0.95 ~ 1 times of movable steel plate length, the width of inner bladder and balloon outer
It is 0.8 ~ 0.9 times of movable steel plate width.
2. double-layer air bag power device according to claim 1, it is characterised in that: the length of inner bladder and balloon outer
It is 0.988 times of movable steel plate length.
3. double-layer air bag power device according to claim 1, it is characterised in that: the width of inner bladder and balloon outer
It is 0.848 times of movable steel plate width.
4. double-layer air bag power device according to claim 1, it is characterised in that: movable steel plate is in contact with interior air bag
Side is covered with the material for reducing coefficient of friction.
5. double-layer air bag power device according to claim 1, it is characterised in that: the maximum of inner bladder and balloon outer
Pressure-bearing is 1.0MPa.
6. double-layer air bag power device according to claim 1, it is characterised in that: the slip angle of movable steel plate is
49.7°。
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| CN201810783362.0A CN109024495A (en) | 2018-07-17 | 2018-07-17 | A kind of double-layer air bag power device |
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| CN201810783362.0A CN109024495A (en) | 2018-07-17 | 2018-07-17 | A kind of double-layer air bag power device |
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