CN108035386A - A kind of underground buoyancy model test apparatus - Google Patents
A kind of underground buoyancy model test apparatus Download PDFInfo
- Publication number
- CN108035386A CN108035386A CN201711416955.5A CN201711416955A CN108035386A CN 108035386 A CN108035386 A CN 108035386A CN 201711416955 A CN201711416955 A CN 201711416955A CN 108035386 A CN108035386 A CN 108035386A
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- CN
- China
- Prior art keywords
- cavity
- test apparatus
- model test
- measurement structure
- soil layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The invention discloses a kind of underground buoyancy model test apparatus, the device includes cavity, measurement structure, the test structure of upper end opening, measurement structure fixed component is additionally provided with above the cavity, described measurement structure one end is fixed on the lower section of measurement structure fixed component, and the other end is connected with one end of test structure within the cavity；Through hole is provided with the side wall upper position of the cavity, the water pipe extending into cavity is provided with the through hole, equally distributed soil layer is provided between test structure and cavity within the cavity, the water pipe is located at the lower section of soil layer, and cavity is provided with scale since soil layer in upwardly direction.The advantages of invention, is：By installing test structure, after being intake by water pipe, by measurement structure and check relation of the water level between the height of soil layer, finally realize the measurement of the relation in the soil body between water level and buoyancy.
Description
Technical field
The present invention relates to geotechnical engineering field, especially a kind of underground buoyancy model test apparatus.
Background technology
It is improper to conduct oneself well if structural anti-buoyancy is unsatisfactory for requiring for the construction of underground structure that buried depth is relatively deep, hydrostatic water table is higher
Reason problem, may cause structure overall or part floats, and the serious problems such as bottom slab crack, cause the destruction of underground structure.
In current a variety of methods for solving the problems, such as underground anti-floating, it is it in weight to determine structure change curve of suffered buoyancy in the soil body
Weight, it is the key point solved the problems, such as to determine that different structure is embedded in buoyancy scope suffered in various soil mass.And from root
A kind of upper basic skills for solving the problems, such as anti-floating.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the measurement of the anti-floating ability of detected materials is solved the problems, such as, for this reason, this hair
It is bright that a kind of underground buoyancy model test apparatus is provided.
To achieve the above object, the present invention uses following technical scheme：
A kind of underground buoyancy model test apparatus, including cavity, measurement structure, test structure, the cavity top are also set
Measurement structure fixed component is equipped with, described measurement structure one end is fixed on the lower section of measurement structure fixed component, the other end and position
Connected in one end of the test structure in cavity；The side wall upper position of the cavity is provided with through hole, is set on the through hole
There is the water pipe extending into cavity, equally distributed soil layer is provided between the test structure and cavity, the water pipe is located at
The lower section of soil layer, cavity are provided with scale from the upwardly direction of soil layer bottom.
Optimization, also set up water treatment portion between the bottom surface in the soil layer and cavity, the water treatment portion from
Filter screen, the plate body for being provided with plate hole, sand bed are disposed with bottom surface direction in soil layer to cavity, the water pipe is set
In sand bed.
Optimization, the water pipe includes water inlet pipe, extend into the water inlet pipe in cavity be provided with along pipe range direction it is multiple
Via.
Optimization, the water inlet pipe is hose, and level-wind is in sand bed.
Optimization, device includes surrounding the outer peripheral outer stationary frame of cavity, is provided with the outer stationary frame
Form the tempered glass of cavity.
Optimization, protection tempered glass has been also set up between the tempered glass and outer stationary frame of formation cavity bottom surface
Protective layer.
Optimization, the measurement structure fixed component is fixedly connected with outer stationary frame, the measurement structure fixed part
Part is cross bar, and the cross bar is parallel with the bottom surface of cavity and is located at the surface of the center line of bottom surface.
Optimization, the distance that the outer stationary frame includes the bottom surface and ground for making cavity is the support of setpoint distance
Portion.
Optimization, the measurement structure is detachable.
Optimization, the measurement structure is pressure sensor.
The advantage of the invention is that：
(1) present invention is by installing test structure, after intaking by water pipe, by measurement structure and checks water level in soil layer
Height between relation, finally realize the measurement of the relation in the soil body between water level and buoyancy.
(2) isolation of the invention by setting water treatment portion soil layer and water pipe, effectively prevents water and soil mixture from hindering
The via of water pipe is filled in, and the water that water pipe excludes can be caused uniformly to flow to soil layer.
(3) to set via and water inlet pipe level-wind to play water inlet pipe in sand bed on the water inlet pipe in the present invention uniform
The effect of draining.
(4) outer stationary frame in the present invention plays reinforcement effect, and tempered glass replaces organic glass of the prior art
Glass, can substantially reduce cost.
(5) protective layer set in the present invention is the intensity for strengthening bottom tempered glass.
(6) bottom surface of cavity has difference in height with ground, so convenient to carry experimental provision, and utilized head difference is convenient
Draining.
(7) outer stationary frame is detachable in the present invention, so can be according to the buoyancy value measured in different range abilities.
Brief description of the drawings
Fig. 1 is a kind of front view of beneath anti-floating bath scaled model experimental device of the present invention.
Fig. 2 is a kind of main view profile of beneath anti-floating bath scaled model experimental device of the present invention.
The implication of label symbol is as follows in figure：
1- tempered glass 101- through hole 2- outer stationary frame 3- measurement structure fixed component 4- protective layers
5- water inlet pipe 6- measurement structure 7- test structure 8- filter screen 9- sandy gravel stratums
10- plate body 111- plate hole 11- sand bed 12- soil layer 13- scale 14- mud unloading valves
Embodiment
As shown in Figs. 1-2, a kind of underground buoyancy model test apparatus, including cavity, measurement structure 6, test structure 7, this
In embodiment, measurement structure 6 is pressure sensor, cavity upper end opening.Measurement structure fixed component is additionally provided with above cavity
3,6 one end of measurement structure is fixed on the lower section of measurement structure fixed component 3, the other end and test structure 7 within the cavity
One end connects；The side wall upper position of cavity is provided with through hole 101, and the water pipe extending into cavity is provided with through hole 101, examination
Test between structure 7 and cavity and be provided with equally distributed soil layer 12, water pipe is located at the lower section of soil layer 12, and cavity is from 12 bottom of soil layer
Scale 13 is provided with upwardly direction.
Also set up water treatment portion between bottom surface in soil layer 12 and cavity, water treatment portion from soil layer 12 to cavity in
Bottom surface direction on be disposed with filter screen 8, the plate body 10 for being provided with plate hole 111, sand bed 11, water pipe is arranged on sand bed 11
It is interior.Plate hole 111 wherein on plate body 10 is uniformly arranged so that the water of water inlet pipe 5 is uniformly flowed to soil layer 12.In the embodiment
Plate body 10 is plank.Optimization, sandy gravel stratum 9 is additionally provided between plate body 10 and filter screen 8.Sandy gravel stratum 9 can not only evolve
The water of outlet pipe is flowed to from soil layer 12, also playing makes the water of water inlet pipe 5 even into the effect to soil layer 12.
Device includes surrounding the outer peripheral outer stationary frame 2 of cavity, is provided with to form cavity in outer stationary frame 2
Tempered glass 1.The size of the tempered glass 1 of cavity surrounding is 0.8m × 1.15m in this embodiment, thickness 1cm, under cavity
1 breadth of tempered glass that bottom surface uses is 0.8m × 0.8m, thickness 1cm.The seam crossing of two adjacent tempered glass 1 uses
Neutral silicone glass cement carries out encapsulation process.1 plate of tempered glass is enough to carry in pure water experiment that water will not be broken to the pressure of side wall
Split, seal the glass cement taken equally be enough to ensure that glass main structure will not cause to occur because of the lateral pressure of water gap so as to
There is the situation of leak, ensure that the globality and leakproofness of structure.
Outer stationary frame 2 is fixed by the L-type Bolted angle connection of 50 × 50 × 5mm and formed, and two is adjacent solid in this embodiment
Fixed angle steel is connected by high-strength bolt, and the detachability of structure has been taken into account while ensure that intensity and globality.
The guarantor of protection tempered glass 1 has been also set up between the tempered glass 1 and outer stationary frame 2 of formation cavity bottom surface
Sheath 4.An angle steel has been added at the outer stationary frame 2 of the lower section of protective layer 4, protective layer 4 and cavity bottom surface can be held
Tempered glass 1.Protective layer 4 is plank in this embodiment, so can reduce tempering in the case where ensureing stable structure
The thickness requirement of glass 1, reduces the cost of device, it is ensured that glass main structure bottom plate uniform stressed, will not be because of bearing area
It is too small to cause very much fragmentation greatly with load.
Measurement structure fixed component 3 is fixedly connected with outer stationary frame 2, and measurement structure fixed component 3 is cross bar, cross bar
The surface of center line parallel with the bottom surface of cavity and positioned at bottom surface.The cross bar of measurement structure fixed component 3 is also by group
The angle steel identical into outer stationary frame 2.Institute between measurement structure fixed component 3, outer stationary frame 2 in this embodiment
There is angle steel to connect and compose integrative-structure by high-strength bolt.
The distance that outer stationary frame 2 includes the bottom surface and ground for making cavity is the supporting part of setpoint distance so that examination
Utilized head difference draining can be carried out during testing easily, and extra, when experimental rig, an emergency situation is encountered during experiment needs
When moving, can easily it be moved using fork truck.
Measurement structure 6 is detachable.So can be according to the buoyancy value measured in different range abilities.
Water pipe includes water inlet pipe 5 and outlet pipe, and water inlet pipe 5 and outlet pipe end within the cavity are enclosuring structure.Into
Water pipe 5 is hose, and level-wind is in sand bed 11.The water inlet pipe 5 extending into cavity is provided with multiple mistakes along pipe range direction
Hole.The through hole 101 that water pipe is fixed in the device is symmetrical arranged on two two fast tempered glass 1 to offset, respectively as water inlet
Pipe 5 and outlet pipe mounting hole.
The step of using above-mentioned anti-floating bath scaled model experimental device, is as follows：
(1) the measurement structure fixed component 3 on outer stationary frame 2 is removed, water inlet pipe 5 is located at one end and water outside cavity
Tap connection, sets the water inlet pipe 5 and outlet pipe in cavity；
(2) sand bed 11, plate body 10, sandy gravel stratum 9, filter screen 8 are set gradually in the cavity, fill out the soil layer 12 of certain altitude,
The test structure 7 of experiment is placed on the soil body, then proceedes to banket, until filling up the sky between cavity and test structure 7
Between；When banketing, ensure the consistent in density of soil layer 12.
(3) after the completion of the soil body fills, one end of pressure sensor is installed on cross bar, the other end is fixed on test structure
7 upper surfaces, cross bar is fixed on outer stationary frame 2.
(4) poured water by water inlet pipe 5 into cavity, by reading on numerical value and tempered glass 1 on pressure sensor
13 corresponding waterlevel data of scale, obtains the buoyancy numerical value under different water levels.
In above-described embodiment, can also be set in cavity hatch makes the spacing of 7 in the vertical direction of test structure movement
Component (not shown), limiting component are arranged on outer stationary frame 2, and limiting component is set with 7 contact position of test structure
It is reduced the lubricating structure of frictional force.
In this embodiment, multiple mud unloading valves 14 are provided with the direction of the side of tempered glass 1 from top to bottom.Due to examination
Test structure 7 taking out from the mud that the soil into water is formed after finishing experiment, and need to exclude in mud, outlet pipe can be with this time
Close, directly open water inlet pipe 5, the soil in tempered glass 1 is become to the pureed of flowing, then open the dump on different height
Valve 14, unloads the soil of inside.
It these are only the preferred embodiment of the invention, be not intended to limit the invention creation, it is all in the present invention
All any modification, equivalent and improvement made within the spirit and principle of creation etc., should be included in the guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of underground buoyancy model test apparatus, it is characterised in that including cavity, measurement structure (6), test structure (7), institute
State and be additionally provided with measurement structure fixed component (3) above cavity, described measurement structure (6) one end is fixed on measurement structure fixed part
The lower section of part (3), the other end are connected with one end of test structure (7) within the cavity；The side wall upper position of the cavity
Through hole (101) is provided with, the water pipe extending into cavity, the test structure (7) and cavity are provided with the through hole (101)
Between be provided with equally distributed soil layer (12), the water pipe is located at the lower section of soil layer (12), cavity from soil layer (12) bottom to
On direction on be provided with scale (13).
2. a kind of underground buoyancy model test apparatus according to claim 1, it is characterised in that the soil layer (12) and chamber
Water treatment portion is also set up between internal bottom surface, the water treatment portion is from soil layer (12) to the bottom surface direction in cavity
On be disposed with filter screen (8), the plate body (10) for being provided with plate hole (111), sand bed (11), the water pipe is arranged on sand bed
(11) in.
3. a kind of underground buoyancy model test apparatus according to claim 2, it is characterised in that the water pipe includes water inlet
Manage (5), extend into the water inlet pipe in cavity (5) and multiple vias are provided with along pipe range direction.
4. a kind of underground buoyancy model test apparatus according to claim 3, it is characterised in that the water inlet pipe (5) is
Hose, level-wind is in sand bed (11).
5. a kind of underground buoyancy model test apparatus according to claim 1, it is characterised in that device includes surrounding cavity
Outer peripheral outer stationary frame (2), the outer stationary frame (2) is interior to be provided with the tempered glass (1) to form cavity.
6. a kind of underground buoyancy model test apparatus according to claim 5, it is characterised in that form cavity bottom surface
The protective layer (4) of protection tempered glass (1) has been also set up between tempered glass (1) and outer stationary frame (2).
7. a kind of underground buoyancy model test apparatus according to claim 5, it is characterised in that the measurement structure is fixed
Component (3) is fixedly connected with outer stationary frame (2), and the measurement structure fixed component (3) is cross bar, the cross bar and cavity
Bottom surface it is parallel and positioned at bottom surface center line surface.
A kind of 8. underground buoyancy model test apparatus according to claim 5, it is characterised in that the outer stationary frame
(2) supporting part for making the bottom surface of cavity and the distance on ground is setpoint distance is included.
A kind of 9. underground buoyancy model test apparatus according to claim 1, it is characterised in that the measurement structure (6)
Detachably.
A kind of 10. underground buoyancy model test apparatus according to claim 9, it is characterised in that the measurement structure (6)
For pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711416955.5A CN108035386A (en) | 2017-12-25 | 2017-12-25 | A kind of underground buoyancy model test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711416955.5A CN108035386A (en) | 2017-12-25 | 2017-12-25 | A kind of underground buoyancy model test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108035386A true CN108035386A (en) | 2018-05-15 |
Family
ID=62100846
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711416955.5A Pending CN108035386A (en) | 2017-12-25 | 2017-12-25 | A kind of underground buoyancy model test apparatus |
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| CN (1) | CN108035386A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0657778A (en) * | 1992-05-13 | 1994-03-01 | Shimizu Corp | System for preventing building from becoming buoyant because of groundwater |
| CN201762733U (en) * | 2010-08-26 | 2011-03-16 | 中国京冶工程技术有限公司 | Controllable decompression drainage floatation-resistant structure of building base |
| CN103821183A (en) * | 2012-11-16 | 2014-05-28 | 同济大学 | Testing apparatus for simulating phenomenon and law of soil heave-piping failure |
| CN106706416A (en) * | 2017-02-20 | 2017-05-24 | 河海大学 | Test device capable of simulating basement bottom plate stress under effect of pressure water and use method thereof |
| CN207934076U (en) * | 2017-12-25 | 2018-10-02 | 合肥工业大学 | A kind of underground buoyancy model test apparatus |
-
2017
- 2017-12-25 CN CN201711416955.5A patent/CN108035386A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0657778A (en) * | 1992-05-13 | 1994-03-01 | Shimizu Corp | System for preventing building from becoming buoyant because of groundwater |
| CN201762733U (en) * | 2010-08-26 | 2011-03-16 | 中国京冶工程技术有限公司 | Controllable decompression drainage floatation-resistant structure of building base |
| CN103821183A (en) * | 2012-11-16 | 2014-05-28 | 同济大学 | Testing apparatus for simulating phenomenon and law of soil heave-piping failure |
| CN106706416A (en) * | 2017-02-20 | 2017-05-24 | 河海大学 | Test device capable of simulating basement bottom plate stress under effect of pressure water and use method thereof |
| CN207934076U (en) * | 2017-12-25 | 2018-10-02 | 合肥工业大学 | A kind of underground buoyancy model test apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 张会军;刘海燕;张庆章;: "砂土中地下粮食圆形筒仓抗浮模拟实验研究", 粮油食品科技, no. 02, pages 99 - 104 * |
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