CN108385736B - Passage formula clinoform model foundation level load test device - Google Patents
Passage formula clinoform model foundation level load test device Download PDFInfo
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- CN108385736B CN108385736B CN201810006380.8A CN201810006380A CN108385736B CN 108385736 B CN108385736 B CN 108385736B CN 201810006380 A CN201810006380 A CN 201810006380A CN 108385736 B CN108385736 B CN 108385736B
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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 passage formula clinoform model foundation level load test devices, including model frame, sloped ground, bracket, jack, U-shaped transfer beam and model basis, sloped ground is filled in model frame, and model basis bottom end is filled to the slope surface of sloped ground；Bracket is arranged close to the model outer frame side of sloped ground slope surface higher end, and jack is horizontally arranged in bracket, and the piston of jack is towards model frame；The both ends of U-shaped transfer beam open side are connect with the piston on the top on model basis and jack respectively, and U-shaped transfer beam is across being crossed on model in-out-snap two sides by jack and model basis.The present invention is without realizing the self-balancing of horizontal addload (U-shaped transfer beam) under conditions of increasing counter-force attachment；Horizontal addload is not damaged and is disturbed to sloped ground landform in assembly, loading procedure；Main influence area is tested on front side of basis, convenient for carrying out photologging to it；It is height-adjustable to the load on model basis.
Description
Technical field
The invention belongs to foundation base model test devices, and the present invention relates to a kind of clinoform model foundation level load
Experimental rig design.
Background technique
In the prior art, the linear engineering of the big region span such as work China Democratic National Construction Association industry, especially railway, highway, transmission line of electricity,
Existence foundation is located at the situation on slope, and basic direction of fall Its ultimate bearing capacity often becomes design control in this case
Condition.Sloped ground real model experiment is optimal research means, but its is costly, the period is long, boundary condition is uppity
It is universal that drawback limits it, therefore model test becomes the important supplement means of research sloped ground basis bearer properties.
Currently, horizontal foundation foundation level loading structure has towed and 2 class of passage formula.Trail-type horizontal addload structure
In front of basis；And the horizontal addload structure of formula is elapsed at basic rear.Towed under normal circumstances and passage formula horizontal addload
It, can not be straight under the conditions of not destroying or disturbing original ground for the horizontal force transferring structure of experimental basis-- counter-force attachment linear structure
It scoops out for the loading test of clinoform foundation level.
Current horizontal loading apparatus have the disadvantage that 1) horizontal loading apparatus can not self-balancing, i.e., must additionally increase anti-
Power attachment realizes the horizontal addload to subjects；2) horizontal loading apparatus has destruction or disturbance to slope initial land form；3) water
Flat loading device has an impact to the main coverage in ground-basis.Therefore, it is necessary to carry out the innovation of structural shape.To improve
The loading test of sloped ground model foundation level is horizontal.
Summary of the invention
For above-mentioned shortcoming and defect in the prior art, can highly be restored really the purpose of the present invention is to provide a kind of
The experimental rig of clinoform horizontal load ability in environment.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of passage formula clinoform model foundation level load test device, including model frame, sloped ground, bracket,
Jack, U-shaped transfer beam and model basis, the sloped ground is filled in model frame, model basis bottom end fill to
In the slope surface of sloped ground；The bracket is arranged close to the model outer frame side of sloped ground slope surface higher end, described very heavy
Top is horizontally arranged in bracket, and the piston of jack is towards model frame；The both ends of the U-shaped transfer beam open side respectively with model
The top on basis is fixedly connected with the piston of jack, and U-shaped transfer beam is across being crossed on model frame by jack and model basis
Inside and outside.
It preferably, further include hanging the crossbeam being arranged on model frame, crossbeam center face model basis, at crossbeam center
Two sides are provided with displacement sensor；It is corresponding that displacement baffle, the displacement are separately installed with by cantilever in model basis two sides
The probe tip face face of sensor is displaced baffle.
It preferably, further include the pressure sensor being arranged between jack and bracket.
It preferably, further include camera, the camera suspension is mounted on model frame, the camera face slope of the camera
The lower one end of ground slope surface.
Preferably, the U-shaped transfer beam is arranged with the cantilever that one end that model basis connects is corresponding model basis two sides
Steel plate, the position of the steel plate face cantilever is provided with card slot, and the card slot is stuck on cantilever.
It preferably, further include circumferential band, the circumferential band hoop protrudes from the position of sloped ground or more on model basis.
Preferably, the bracket is mounted on model frame by bolt, is provided with multiple screw threads on model frame along the vertical direction
Hole.
Preferably, two cantilever Screw assemblies are in circumferential band.
Preferably, the bracket includes the frame and bottom panel of surrounding, and the U-shaped transfer beam is located at one end end in bracket
Roller bearing is installed on face；The piston of the jack is abutted with the side of U-shaped transfer beam.
Compared with prior art, the embodiment of the present invention has at least the following advantages:
(1) to the measurement of load-displacement；
The measurement to model horizontal displacement of foundation is realized by the displacement sensor being arranged symmetrically, while avoiding foundation torsion
Caused error；The measurement to horizontal loading suffered by model basis is realized by pressure sensor.
(2) horizontal loading apparatus self-balancing
On the one hand passing through bracket passes to test frame for very heavy ejecting force, on the other hand passes through U-shaped transfer beam, cantilever and ring-like
Hoop is transferred to model basis, thus it is not necessary that under conditions of increasing counter-force attachment, horizontal loading apparatus realizes self-balancing；
(3) destruction (disturbance) to primitively base shape is avoided；
U-shaped transfer beam realizes passage formula horizontal loading apparatus to not the destroying of sloped ground landform, do not disturb.
(4) the unobstructed of main influence area is tested, observation is facilitated；
Main influence area is tested on front side of basis, to carry out photologging to it convenient for camera, top is answered unobstructed
Object.And the structure for elapsing formula horizontal loading apparatus, to test the unobstructed of main influence area, facilitates sight on rear side of basis
It examines；
(5) load height is adjustable
In bracket side, bracket is bolted on the wall surface of test frame, passes through the several of the wall surface in test frame
The adjusting of bracket height may be implemented in height prepared screw-bolt hole；In model basis side, ring-like hoop assembly is height-adjustable.Pass through
The synchronous adjustment of ring-like hoop and bracket realizes adjusting under the conditions of not changing substrate absolute altitude to model basis load height.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of passage formula clinoform model foundation level load test device of the present invention.
Specific embodiment
Below with reference to embodiment and its attached drawing, the invention will be further described, following embodiment be it is descriptive, no
It is restrictive, this does not limit the scope of protection of the present invention.
A kind of basic 3 horizontal static-load experiment devices of passage formula clinoform model, including model frame 1, sloped ground 2, support
Slot 10, jack 11, U-shaped transfer beam 9 and model basis 3, the sloped ground 2 are filled in model frame 1, the model basis
3 bottom ends are filled to the slope surface of sloped ground 2；The bracket 10 is arranged close to the model of 2 slope surface higher end of sloped ground
The outside of frame 1, the jack 11 are horizontally arranged in bracket 10, and the piston of jack 11 is towards model frame 1；The U-shaped power transmission
The both ends of 9 open side of beam are fixedly connected with the piston on the top on model basis 3 and jack 11 respectively, and U-shaped transfer beam 9 is across passing through
Jack 11 and model basis 3 are crossed on inside and outside model frame 1.
It further include the crossbeam 8 that suspension is arranged on model frame 1,8 center face model basis 3 of crossbeam, at 8 center two of crossbeam
Side is provided with displacement sensor 7；It is corresponding that displacement baffle 6, institute's rheme are separately installed with by cantilever 5 in model basic 3 two sides
The probe tip face face of displacement sensor 7 is displaced baffle 6.
It further include the pressure sensor 12 being arranged between jack 11 and bracket 10.When it is implemented, pressure sensor
12 can external pressure numeroscope, likewise, displacement sensor 7, which can also directly be displaced numeroscope, facilitates reading.Front end can also be adopted
The pressure sensor 12 and displacement sensor 7 for collecting data are directly connect with computer, are carried out by the corresponding program on computer
The finishing analysis of data.
It further include camera 13, the suspension of camera 13 is mounted on model frame 1, the camera face slope of the camera 13
The lower one end of 2 slope surface of ground.
The steel that the U-shaped transfer beam 9 is arranged with the cantilever 5 that one end of 3 connection of model basis is basic 3 two sides of corresponding model
The position of plate, the steel plate face cantilever 5 is provided with card slot, and the card slot is stuck on cantilever 5.
It further include circumferential band 4, the hoop of circumferential band 4 protrudes from the position of 2 or more sloped ground on model basis 3.
The bracket 10 is mounted on model frame 1 by bolt, is provided with multiple threaded holes on model frame 1 along the vertical direction.
Two 5 Screw assemblies of cantilever are in circumferential band 4.
The bracket 10 includes the frame and bottom panel of surrounding, and the U-shaped transfer beam 9 is located at one end end face in bracket 10
On roller bearing is installed；The piston of the jack 11 is abutted with the side of U-shaped transfer beam 9.U-shaped transfer beam 9 is located in bracket 10
10 bottom panel of end face and bracket between by roller bearing pad, with achieve the effect that reduce both sliding-frictional resistance.
Experimental rig preparation process:
1., then will be oblique into model frame 1 according to landfill depth of the practical basis on clinoform as substrate absolute altitude
2 cubic metres of earth of hillside fields base are filled to the basic 3 substrate absolute altitudes of model；
2. adjusting horizontal position and the verticality on model basis 3；
3. actual slope soil layering situation 2 cubic metres of earth of placement in layers sloped ground into model frame 1 are pressed, until sloped ground 2
Top surface designed elevation；
4. ramping ground 2 fills the redundancy section of process generation, sloped ground 2 is formed；
5. installing circumferential band 4 and bracket 10 on model basis 3 to designed elevation, make power output axis, the mould of jack 11
Type 3 axis of basis and 5 axis three of cantilever are mutually orthogonal；
6. placing U-shaped transfer beam 9, U-shaped transfer beam 9 is opening down, and the one end for being provided with roller bearing is placed in bracket 10, separately
One end is stuck on the cantilever 5 of basic 3 two sides of model by card slot；
7. jack 11, pressure sensor 12, crossbeam 8, displacement sensor 7 and camera 13 (14) is arranged in opsition dependent.
The test process of this experimental rig:
1. being pressurizeed by external discharge oil pump station to 11 fuel feeding of jack；On the one hand the power output of jack 11 is passed by bracket 10
Model frame 1 is passed, cantilever 5 is on the other hand transferred to by U-shaped transfer beam 9.
2. the power output of jack 11 will be passed to model basis 3 by circumferential band 4 by 5 one side of cantilever, horizontal force is realized
Self-balancing；On the other hand 3 displacement of model basis is led into displacement baffle 6, displacement baffle 6 is as basic 3 displacement measurements of model
Datum mark.
3. the displacement sensor 7 of corresponding two displacements baffle 6 is installed by the suspension of crossbeam 8, two displacement baffles 6 of face,
It is displaced by the displacement measurement to displacement baffle 6 as model basis 3.
4. jack 11 is contributed, (or horizontal loading suffered by model basis 3) is measured by pressure sensor 12.
5. the image recording of the main coverage of horizontal loading test is measured by camera 13.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (7)
1. a kind of passage formula clinoform model foundation level load test device, which is characterized in that including model frame, slope land
Base, bracket, jack, U-shaped transfer beam and model basis, the sloped ground are filled in model frame, model basis bottom
On the landfill to the slope surface of sloped ground of end；The bracket is arranged close to the model outer frame side of sloped ground slope surface higher end,
The jack is horizontally arranged in bracket, and the piston of jack is towards model frame；The both ends of the U-shaped transfer beam open side point
It is not connect with the piston on the top on model basis and jack, U-shaped transfer beam is across being crossed on mould by jack and model basis
Type in-out-snap two sides；It further include the crossbeam that suspension is arranged on model frame, crossbeam center face model basis, at crossbeam center two
Side is provided with displacement sensor；Corresponding to be separately installed with displacement baffle by cantilever in model basis two sides, the displacement passes
The probe tip face face of sensor is displaced baffle；It further include the pressure sensor being arranged between jack and bracket.
2. passage formula clinoform model foundation level load test device according to claim 1, which is characterized in that also
Including camera, the camera suspension is mounted on model frame, the camera face sloped ground slope surface lower one of the camera
End.
3. passage formula clinoform model foundation level load test device according to claim 1, which is characterized in that institute
The steel plate of U-shaped transfer beam with the cantilever setting that one end that model basis connects is corresponding model basis two sides is stated, the steel plate is just
Card slot is provided with to the position of cantilever, the card slot is stuck on cantilever.
4. passage formula clinoform model foundation level load test device according to claim 3, which is characterized in that also
Including circumferential band, the circumferential band hoop protrudes from the position of sloped ground or more on model basis.
5. passage formula clinoform model foundation level load test device according to claim 4, which is characterized in that institute
It states bracket to be mounted on model frame by bolt, is provided with multiple threaded holes on model frame along the vertical direction.
6. passage formula clinoform model foundation level load test device according to claim 5, which is characterized in that two
Root cantilever Screw assembly is in circumferential band.
7. passage formula clinoform model foundation level load test device according to claim 1, which is characterized in that institute
The frame and bottom panel that bracket includes surrounding are stated, roller bearing is installed on one end end face that the U-shaped transfer beam is located in bracket；Institute
The piston for stating jack is abutted with the side of U-shaped transfer beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006380.8A CN108385736B (en) | 2018-01-04 | 2018-01-04 | Passage formula clinoform model foundation level load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006380.8A CN108385736B (en) | 2018-01-04 | 2018-01-04 | Passage formula clinoform model foundation level load test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108385736A CN108385736A (en) | 2018-08-10 |
| CN108385736B true CN108385736B (en) | 2019-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006380.8A Expired - Fee Related CN108385736B (en) | 2018-01-04 | 2018-01-04 | Passage formula clinoform model foundation level load test device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284531A (en) * | 2019-05-17 | 2019-09-27 | 长安大学 | Oblique Steep Slope Bridge pile foundation lateral bearing capacity correction factor and bearing capacity computation method |
| CN114892731B (en) * | 2022-05-30 | 2024-02-13 | 合肥工业大学 | Transmission line tower foundation drawing test system considering facing cliff and slope topography |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011102527A (en) * | 2009-10-13 | 2011-05-26 | Japan Pile Corp | Horizontal load testing method of pile |
| CN202351126U (en) * | 2011-11-24 | 2012-07-25 | 清华大学 | Lateral limiting device for steel structure pressed component loading test |
| CN103217348A (en) * | 2013-04-12 | 2013-07-24 | 同济大学 | Testing device for simulating mechanical behaviors of gravel soil subgrade under reciprocating traffic moving load |
| CN206189478U (en) * | 2016-10-31 | 2017-05-24 | 武汉科技大学 | Horizontal pile foundation single pile horizontal load test device |
| CN206591549U (en) * | 2017-02-28 | 2017-10-27 | 中交武汉港湾工程设计研究院有限公司 | A kind of steel-pipe pile horizontal cyclic experimental provision of simulated waves load |
-
2018
- 2018-01-04 CN CN201810006380.8A patent/CN108385736B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011102527A (en) * | 2009-10-13 | 2011-05-26 | Japan Pile Corp | Horizontal load testing method of pile |
| CN202351126U (en) * | 2011-11-24 | 2012-07-25 | 清华大学 | Lateral limiting device for steel structure pressed component loading test |
| CN103217348A (en) * | 2013-04-12 | 2013-07-24 | 同济大学 | Testing device for simulating mechanical behaviors of gravel soil subgrade under reciprocating traffic moving load |
| CN206189478U (en) * | 2016-10-31 | 2017-05-24 | 武汉科技大学 | Horizontal pile foundation single pile horizontal load test device |
| CN206591549U (en) * | 2017-02-28 | 2017-10-27 | 中交武汉港湾工程设计研究院有限公司 | A kind of steel-pipe pile horizontal cyclic experimental provision of simulated waves load |
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| CN108385736A (en) | 2018-08-10 |
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Granted publication date: 20191015 Termination date: 20220104 |