CN208009502U - Strip footing model test apparatus by the side slope of integrated micro stake supporting - Google Patents
Strip footing model test apparatus by the side slope of integrated micro stake supporting Download PDFInfo
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- CN208009502U CN208009502U CN201820323584.XU CN201820323584U CN208009502U CN 208009502 U CN208009502 U CN 208009502U CN 201820323584 U CN201820323584 U CN 201820323584U CN 208009502 U CN208009502 U CN 208009502U
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- side slope
- slope
- test apparatus
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Abstract
The utility model is related to indoor Rock And Soil model test apparatus, are more particularly to strip footing model test apparatus by the side slope of integrated micro stake supporting, belong to Geotechnical Engineering field.The device is by rigid reaction frame, hydraulic pump, transfer beam, roller bearing, guide rod, transmission rod, spherical bearing, rigid strip foundation, mini pile, suspending rod, displacement sensor, sample prepares case composition, strip footing model test apparatus solves the problems, such as that side slope is simulated with mini pile supporting under basic coupling condition by the side slope of the integrated micro stake supporting of the utility model, strip footing model test apparatus load output system is reliable by the side slope of integrated micro stake supporting, it is highly practical, theoretical and design of its support can be served, it can be commonly used to the model test of mini pile supporting condition slope and basis interaction.
Description
Technical field
The utility model is related to indoor Rock And Soil model test apparatus, are more particularly to by the side slope of integrated micro stake supporting
Strip footing model test apparatus belongs to Geotechnical Engineering field.
Background technology
In recent years, under the overall background of China's infrastructure construction rapid development, sometimes by the shadow of landform, economic dispatch factor
It rings, needs foundation on the ground by side slope.For example, mountain highway is limited by landform, roadbed need to be arranged in side slope
On other ground；When bridge crosses over cheuch or traffic lines, need pier footing being arranged in side slope top of the slope sometimes；Mountain area electric power pylon
Base is normally placed in side slope and closes on ground；When opencast mining, roadbed is embedded in temporarily sometimes on the ground by side slope.Side slope
Basis is built on side, on the one hand, the presence of side slope can reduce foundation bearing capacity, and on the other hand, basic overlying load action leads to side
Slope deformation increases, and influences stability of slope.Therefore, it is based on engineering safety to consider, the complicated system of urgent need to resolve side slope-basis composition
The interaction mechanism and stability problem of system.
Basis is built by side slope, need to ensure foundation bearing capacity and control slope deforming.Existing ground and basic engineering rule
Fan Zhong, the complication system for not being directed to side slope-basis composition propose that corresponding solution is suggested.In engineer application, with often continuing to use level land
Base Bearing Capacity Formula, or to level land bearing capacity formulas amendment, unified method is not formed.Therefore, the basis by side slope is held
The theory and experimental study for carrying power and failure mechanism relatively lag behind.
Model test is to disclose a kind of intuitive and economy method of wprks rule, on the one hand, model test can
To provide basis and verification for theoretical research；On the other hand, opposite engineering site is tested, and model test expense is relatively low.Bar shaped base
For plinth as a kind of base form of special size, its length and width are bigger, and when theoretical treatment can be used as ideal plane strain model,
The data obtained can be used for the engineering numerical computations under plane strain condition.Therefore, the model test of strip footing is by side slope
A kind of effective ways for the engineering problem that solution side slope, basis coexist.
However, the model investigation of strip footing is less by existing side slope, it is inclined that basic stress is commonly present load when loading
Heart problem, it is more prominent especially after basic overturning, meanwhile, do not have and considers that correlation is matched under the conditions of the strip footing by side slope
The model test equipment of the mini pile supporting of set.
In conclusion the theory and experimental study of the bearing capacity of strip footing and system stability are still insufficient by side slope,
Targetedly the model test equipment of mini pile supporting, the side slope side strip footing model for researching and developing integrated micro stake supporting do not try
Experiment device can provide important skill for the interaction mechanism and stability control for disclosing the complication system that side slope-basis forms
Art supports.
Utility model content
The purpose of this utility model be to provide load output system it is reliable, it is highly practical, serve theoretical and supporting
Strip footing model test apparatus by the side slope of the integrated micro stake supporting of design.
To achieve the goals above, the utility model uses following technical measures：
The device is by rigid reaction frame, hydraulic pump, transfer beam, roller bearing, guide rod, transmission rod, spherical bearing, rigidity
Strip footing, mini pile, suspending rod, displacement sensor, sample prepare case composition, and rigid reaction frame is in square arch, rigid counter-force
The downside of frame roof center connects hydraulic pump, and hydraulic pump lower part is contacted with connection cushion block, and connection cushion block is positioned in transfer beam, just
Property reaction frame two side inner surface be separately connected the first connecting plate, the second connecting plate and third connecting plate from top to bottom, first connects
One end of fishplate bar and third connecting plate is provided with threaded hole, and the both ends of transfer beam are arranged with roller bearing, and guide rod passes perpendicularly through
Roller bearing, the both ends of guide rod are threadedly coupled with the threaded hole of the first connecting plate and third connecting plate, and the one of the second connecting plate
End connection displacement sensor, the center both sides of the upper surface perpendicular contact of displacement sensor and transfer beam, transfer beam are arranged with
A pair of of positioning spiro pit and a pair first suspend threaded hole in midair, and rigid strip foundation is much larger than the cube of width, rigidity in length
The center both sides of strip footing along its length are arranged with a pair of of spherical bearing and a pair second suspends threaded hole in midair, transmission rod
One end is threadedly coupled with positioning spiro pit, and the other end of transmission rod is contacted with spherical bearing, and location nut is matched with transmission rod and merged
It is contacted respectively with the upper and lower surface of transfer beam, the center both sides of rigid reaction frame top plate are arranged with a pair of of suspention through-hole, suspention
Bar, which passes through, suspends through-hole, the first suspention threaded hole, the second suspention threaded hole in midair, and jack nut passes through suspending rod and hangs on rigidity instead
The upper surface of power frame top plate, screw thread stake holes are distributed along the length direction of rigid strip foundation, a part of screw thread stake holes and mini pile
Threaded one end connection, remainder screw thread stake holes is threadedly coupled with blind bolt, and sample prepares case by organic glass, reinforcing side
Plate, positioning plate, braking universal wheel are constituted, and organic glass is square groove shape, and graduation mark, organic glass are decorated in organic glass surface
Inside is equipped with slope ground body, and rigid strip foundation is positioned in the top of the slope of slope ground body, and each side of outer wall of organic glass is logical
Fastening bolt reinforcement by connection side plate is crossed, reinforcing side plate of the case top side wall along rigid strip foundation length direction is prepared positioned at sample
It is provided with rectangular sliding through hole, positioning plate is in rectangular shape, and the two sides for the positioning plate being bonded with organic glass inner wall is provided with
Rectangular sliding groove, locking bolt pass through sliding through hole and sliding groove, lock-nut to be located in sliding groove, positioning plate and reinforcing
Side plate is connected by locking bolt with lock-nut, and sample prepares bottom portion equipped with braking universal wheel.
The vertical symmetry axis of the hydraulic pump, connection cushion block is conllinear with the rigid vertical symmetry axis of reaction frame.
The upper surface of the mini pile is concordant with the upper surface of rigid strip foundation, suspending rod, the following table of blind bolt
Face is concordant with the lower surface of rigid strip foundation.
The rigid strip foundation and transfer beam is mutually parallel, and perpendicular to guide rod, transmission rod, suspending rod, hydraulic pressure
Pump, mini pile.
As a result of above technical scheme, there is strip footing model test apparatus by the side slope of the integrated micro stake supporting
Following advantages：
The rigid strip foundation and transfer beam of 1 device are mutually parallel, and perpendicular to guide rod, transmission rod, suspending rod, micro-
Type stake, and transmission rod parallel in pairs is used, when hydraulic pump is further applied load, transfer beam can only under the constraint of roller bearing
Along being moved perpendicular to the direction of rigid strip foundation, it ensure that output load direction perpendicular to rigid strip foundation, load output
System is reliable.
The load output system of 2 devices has symmetry, under the action of spherical bearing, perpendicular to rigid strip foundation
Output loading position be not present eccentricity issues.
3 pairs of spherical bearings are arranged in along rigid strip foundation length direction, and are symmetrical with hydraulic pump central shaft, are ensured
When bearing capacity is unsatisfactory for requirement, rigid strip foundation topples, there is no turn round in the plane of length direction for rigid strip foundation
Gesture is transferred toward, torsion, problem on deformation still in the scope of plane strain, meet model test in plane that can only be in the width direction
Theoretical foundation correctness.
Several screw thread stake holes are arranged in 4 rigid strip foundations along its length, arrange the screw thread stake holes and mini pile of mini pile
It is threadedly coupled, does not arrange that the screw thread stake holes of mini pile is threadedly coupled with blind bolt, in addition, the upper surface of mini pile and rigidity bar
The upper surface on shape basis is concordant, and the lower surface of blind bolt is concordant with the lower surface of rigid strip foundation, is ensureing slope ground
Body is not in the case that threadingly stake holes is overflowed, and the arrangement form of mini pile is more flexible, and mini pile is introduced as design of its support
Experimental basis is provided, on the other hand, is connect with whole screw thread stake holes by blind bolt, the non-supporting of mini pile can be simulated
Operating mode tests type more horn of plenty.
5 organic glasses provide convenience for observation slope ground body destructive process, and organic glass surface is according to side slope rock
Soil deformation property portrays corresponding size scale line, has expanded the means and method of deformation measurement.
6 according to the Slope face angle and rigid strip foundation of setting with a distance from the shoulder of slope, running fix plate until meet want
After asking, by locking bolt and lock-nut connected positioning plate and reinforcing side plate, successively fills, is compacted slope ground body, obtain
Side slope surface it is parallel with positioning plate, so the design of positioning plate make side slope prepare it is more convenient, more reliable.
Strip footing model test apparatus solves side slope and base by the side slope of the integrated micro stake supporting of the utility model
The problem that mini pile supporting is simulated under plinth coupling condition, the side slope side strip footing model test apparatus lotus of integrated micro stake supporting
It is reliable to carry output system, it is highly practical, theoretical and design of its support can be served, mini pile supporting condition slope can be commonly used to
With the model test of basis interaction.
Description of the drawings
Fig. 1 is strip footing model test apparatus structural representation by the side slope of the integrated micro stake supporting of the utility model
Figure；
Fig. 2 is strip footing model test apparatus side view by the side slope of the integrated micro stake supporting of the utility model.
Specific implementation mode
The utility model is further illustrated below in conjunction with the accompanying drawings, sees attached drawing.
Strip footing model test apparatus by the side slope of integrated micro stake supporting, the device is by rigid reaction frame 2, hydraulic pump
16, transfer beam 18, roller bearing 7, guide rod 8, transmission rod 14, spherical bearing 15, rigid strip foundation 27, mini pile 24, outstanding
Sunpender 21, displacement sensor 6, sample prepare case composition.
Rigid reaction frame 2 is in square arch, and the downside of 2 roof center of rigid reaction frame connects hydraulic pump 16, under hydraulic pump 16
Portion is contacted with connection cushion block 17, and connection cushion block 17 is positioned in transfer beam 18, hydraulic pump 16, the vertical symmetry axis for connecting cushion block 17
It is conllinear with the vertical symmetry axis of rigid reaction frame 2.2 two side inner surface of rigid reaction frame is separately connected the first connection from top to bottom
Plate 3, the second connecting plate 4 and third connecting plate 5.One end of first connecting plate 3 and third connecting plate 5 is provided with threaded hole, transfer beam
18 both ends are arranged with roller bearing 7, and guide rod 8 passes perpendicularly through roller bearing 7, the both ends of guide rod 8 and the first connecting plate 3
It is threadedly coupled with the threaded hole of third connecting plate 5, for ensureing that transfer beam 18 only has the degree of freedom of vertical direction.Second connecting plate
4 one end connects displacement sensor 6, the upper surface perpendicular contact of displacement sensor 6 and transfer beam 18, and displacement sensor 6 is used for
Measure the vertical displacement of transfer beam 18.
The center both sides of transfer beam 18 are arranged with a pair of of positioning spiro pit 12 and a pair first suspends threaded hole 22, rigidity in midair
Strip footing 27 is much larger than the cube of width in length, and the center both sides of rigid strip foundation 27 along its length are arranged with
A pair of of spherical bearing 15 and a pair second suspend threaded hole 28 in midair, and one end of transmission rod 14 is threadedly coupled with positioning spiro pit 12, pass
The other end of power bar 14 is contacted with spherical bearing 15, location nut 13 and transmission rod 14 match merge respectively with transfer beam 18 it is upper,
Lower surface contacts, upper and lower position of the location nut 13 for the fixing force transfer beam 18 after transfer beam 18 is moved to elemental height.Just
Property 2 top plate of reaction frame center both sides be arranged with a pair of of suspention through-hole 20, suspending rod 21 passes through suspention through-hole 20, first to suspend in midair
Threaded hole 22, second suspends threaded hole 28 in midair, and the lower surface of suspending rod 21 is concordant with the lower surface of rigid strip foundation 27, suspends spiral shell in midair
Mother 1 passes through suspending rod 21 and hangs on the upper surface of 2 top plate of rigid reaction frame.Length of the screw thread stake holes 23 along rigid strip foundation 27
Directional spreding is spent, a part of screw thread stake holes 23 is connect with the threaded one end of mini pile 24, remainder screw thread stake holes 23 and closing
Bolt 26 is threadedly coupled, and the upper surface of mini pile 24 is concordant with the upper surface of rigid strip foundation 27, the following table of blind bolt 26
Face is concordant with the lower surface of rigid strip foundation 27.
Rigid strip foundation 27 and transfer beam 18 are mutually parallel, and perpendicular to guide rod 8, transmission rod 14, suspending rod 21, liquid
Press pump 16, mini pile 24.
Sample prepares case and is made of organic glass 31, reinforcing side plate 30, positioning plate 19, braking universal wheel 11, organic glass
31 are square groove shape, and graduation mark is decorated on 31 surface of organic glass, and 31 inside of organic glass is equipped with slope ground body 25, rigidity bar
Shape basis 27 is positioned in the top of the slope of slope ground body 25, and each side of outer wall of organic glass 31 passes through 10 reinforcement by connection of fastening bolt
Side plate 30, positioned at sample prepare case top side wall be provided with along the reinforcing side plate 30 of 27 length direction of rigid strip foundation it is rectangular
Sliding through hole 32, positioning plate 19 are in rectangular shape, and the two sides of the positioning plate 19 being bonded with 31 inner wall of organic glass is provided with rectangular
The sliding groove 33 of shape, locking bolt 9 pass through sliding through hole 32 and sliding groove 33, lock-nut 29 to be located in sliding groove 33, position
Plate 19 is connect with side plate 30 is reinforced by locking bolt 9 and lock-nut 29.Sample prepares bottom portion equipped with braking universal wheel 11.
The operation principle of the utility model is：
(1) hydraulic pump 16 to pressure head is adjusted to rise into contraction state, the peak of rotation jack nut 1 to suspending rod 21,
The upper and lower position of rotational positioning nut 13 and adjusting transfer beam 18 is until rigid strip foundation 27 reaches elemental height, rotation power transmission
Bar 14 simultaneously ensures that its lower surface is contacted with spherical bearing 15, rotational positioning nut 13 and clamps transfer beam 18 again, rotation suspention
Nut 1 is contacted to the lower surface of jack nut 1 with the upper surface of rigid reaction frame 2, at this point, rigid strip foundation 27 is in design
Height is simultaneously suspended state.
(2) according to the quantity and Position Design of mini pile 24, mini pile 24 is installed successively, and meet the upper table of mini pile 24
Face is concordant with the upper surface of rigid strip foundation 27, installs blind bolt 26 in the position of residual thread stake holes 23, and meet envelope
The lower surface for closing bolt 26 is concordant with the lower surface of rigid strip foundation 27.
(3) adjusting brake switch to the braking universal wheel 11 of braking universal wheel 11 can roll, and promotion sample prepares case to setting
Position is counted, the brake switch of braking universal wheel 11 is adjusted and ensures that braking universal wheel 11 can not roll.
(4) position of positioning plate 19 is adjusted, and meets the design level of Slope face angle and rigid strip foundation from slope shoulder
The requirement of distance, rotary locking bolt 9 pass through locking bolt 9 and the connection of lock-nut 29 and stationary positioned plate 19 and reinforcing side
Plate 30.
(5) layering filling slope ground body 25 and compaction in layers in case are prepared to sample, until slope ground body 25 reaches
Design height position, at this point, slope ground body 25 is contacted with rigid strip foundation 27.
(6) rotation jack nut 1 adjusts hydraulic pump 16 and is contacted to pressure head with connection cushion block 17 to the peak of suspending rod 21
And no pressure, displacement sensor 6 is adjusted to the upper surface perpendicular contact of itself and transfer beam 18, is reset displacement sensor 6 and is read.
(7) it pressurizes to hydraulic pump 16 and reads hydraulic pressure value, while reading the numerical value of displacement sensor 6, until basis and side
The system of slope composition generates failure by shear, obtains Load-Deflection curve, the destructive process of slope ground body 25 in record experiment.
Claims (4)
1. strip footing model test apparatus by the side slope of integrated micro stake supporting, it is characterised in that：The device is by rigid counter-force
Frame (2), hydraulic pump (16), transfer beam (18), roller bearing (7), guide rod (8), transmission rod (14), spherical bearing (15), just
Property strip footing (27), mini pile (24), suspending rod (21), displacement sensor (6), sample prepare case composition, rigid reaction frame
(2) it is in square arch, the downside connection hydraulic pump (16) of rigid reaction frame (2) roof center, hydraulic pump (16) lower part and connection gasket
Block (17) contacts, and connection cushion block (17) is positioned in transfer beam (18), and rigid reaction frame (2) two side inner surface divides from top to bottom
The first connecting plate (3), the second connecting plate (4) and third connecting plate (5), the first connecting plate (3) and third connecting plate (5) are not connected
One end be provided with threaded hole, the both ends of transfer beam (18) are arranged with roller bearing (7), and guide rod (8) passes perpendicularly through roller axle
It holds (7), the both ends of guide rod (8) are threadedly coupled with the threaded hole of the first connecting plate (3) and third connecting plate (5), the second connection
One end connection displacement sensor (6) of plate (4), the upper surface perpendicular contact of displacement sensor (6) and transfer beam (18), transfer beam
(18) center both sides are arranged with a pair of of positioning spiro pit (12) and a pair first suspends threaded hole (22), rigid strip foundation in midair
(27) it is in cube of the length much larger than width, the center both sides of rigid strip foundation (27) along its length are arranged with a pair
Spherical bearing (15) and a pair second suspend threaded hole (28) in midair, and one end and positioning spiro pit (12) screw thread of transmission rod (14) connect
Connect, the other end of transmission rod (14) is contacted with spherical bearing (15), location nut (13) and transmission rod (14) with merge respectively and
The upper and lower surface of transfer beam (18) contacts, and the center both sides of rigid reaction frame (2) top plate are arranged with a pair of of suspention through-hole
(20), suspending rod (21) passes through suspention through-hole (20), the first suspention threaded hole (22), the second suspention threaded hole (28), suspends spiral shell in midair
Female (1) passes through suspending rod (21) and hangs on the upper surface of rigid reaction frame (2) top plate, and screw thread stake holes (23) is along rigid bar shaped base
The length direction of plinth (27) is distributed, and a part of screw thread stake holes (23) connect with the threaded one end of mini pile (24), remainder spiral shell
Line stake holes (23) is threadedly coupled with blind bolt (26), and sample prepares case by organic glass (31), reinforcing side plate (30), positioning plate
(19), braking universal wheel (11) is constituted, and organic glass (31) is square groove shape, and graduation mark is decorated on organic glass (31) surface,
Slope ground body (25) is housed, rigid strip foundation (27) is positioned over the top of the slope of slope ground body (25) on the inside of organic glass (31)
On, each side of outer wall of organic glass (31) prepares case side wall by fastening bolt (10) reinforcement by connection side plate (30) positioned at sample
Top is provided with rectangular sliding through hole (32), positioning plate along the reinforcing side plate (30) of rigid strip foundation (27) length direction
(19) it is in rectangular shape, the two sides for the positioning plate (19) being bonded with organic glass (31) inner wall is provided with rectangular sliding groove
(33), locking bolt (9) passes through sliding through hole (32) and sliding groove (33), lock-nut (29) to be located in sliding groove (33), fixed
Position plate (19) is connect with side plate (30) is reinforced by locking bolt (9) and lock-nut (29), and sample prepares bottom portion equipped with system
Dynamic universal wheel (11).
2. strip footing model test apparatus by the side slope of integrated micro stake supporting according to claim 1, feature exist
In：The vertical symmetry axis of the hydraulic pump (16), connection cushion block (17) is conllinear with the rigid vertical symmetry axis of reaction frame (2).
3. strip footing model test apparatus by the side slope of integrated micro stake supporting according to claim 1, feature exist
In：The upper surface of the mini pile (24) is concordant with the upper surface of rigid strip foundation (27), suspending rod (21), blind bolt
(26) lower surface is concordant with the lower surface of rigid strip foundation (27).
4. strip footing model test apparatus by the side slope of integrated micro stake supporting according to claim 1, feature exist
In：The rigid strip foundation (27) and transfer beam (18) is mutually parallel, and perpendicular to guide rod (8), transmission rod (14), outstanding
Sunpender (21), hydraulic pump (16), mini pile (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820323584.XU CN208009502U (en) | 2018-03-09 | 2018-03-09 | Strip footing model test apparatus by the side slope of integrated micro stake supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820323584.XU CN208009502U (en) | 2018-03-09 | 2018-03-09 | Strip footing model test apparatus by the side slope of integrated micro stake supporting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208009502U true CN208009502U (en) | 2018-10-26 |
Family
ID=63888454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820323584.XU Expired - Fee Related CN208009502U (en) | 2018-03-09 | 2018-03-09 | Strip footing model test apparatus by the side slope of integrated micro stake supporting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208009502U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193722A (en) * | 2018-03-09 | 2018-06-22 | 河南理工大学 | Strip footing model test apparatus by the side slope of integrated micro stake supporting |
| CN110847249A (en) * | 2019-10-14 | 2020-02-28 | 东南大学 | Indoor model device for detecting uplift resistance and horizontal bearing performance of pile foundation |
-
2018
- 2018-03-09 CN CN201820323584.XU patent/CN208009502U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193722A (en) * | 2018-03-09 | 2018-06-22 | 河南理工大学 | Strip footing model test apparatus by the side slope of integrated micro stake supporting |
| CN108193722B (en) * | 2018-03-09 | 2023-09-29 | 河南理工大学 | Side slope side strip foundation model test device for integrated miniature pile support |
| CN110847249A (en) * | 2019-10-14 | 2020-02-28 | 东南大学 | Indoor model device for detecting uplift resistance and horizontal bearing performance of pile foundation |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181026 Termination date: 20210309 |