CN109469110A - For the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap and assemble method - Google Patents
For the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap and assemble method Download PDFInfo
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- CN109469110A CN109469110A CN201811227683.9A CN201811227683A CN109469110A CN 109469110 A CN109469110 A CN 109469110A CN 201811227683 A CN201811227683 A CN 201811227683A CN 109469110 A CN109469110 A CN 109469110A
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- China
- Prior art keywords
- stake
- plug
- cushion cap
- connecting plate
- pile foundation
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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 for the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap and assemble method, including screwing-in device and measuring system；The measuring system includes punching pressure sensor, data collection system；The screwing-in device includes casing, plug, connecting plate, nut and pedestal；The connecting plate is as cushion cap, through-hole is offered thereon, described sleeve pipe is as test pile, upper part and lower part are respectively equipped with screw thread, the top and plug lower part of casing cooperate, the lower part of casing and base engagement, the top of plug are inserted into the hole of connecting plate after passing through the punching pressure sensor, and top realizes fixation of the casing on connecting plate with the nut cooperation；The punching pressure sensor is connected with data collection system.The present invention has studied the clump of piles bearer properties in pile foundation model test, solves stake and the how rigidly connected technical problem of cushion cap.
Description
Technical field
The present invention relates to a kind of for the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap and its assemble method.
Background technique
Pile foundation model test is to establish the mould for having certain similitude rule with prototype referring to pile foundation actual working state
Type, by accurate scientific instrument and equipment, artificially Control experiment condition, studies pile foundation under a certain or certain specific conditions
Bearer properties test.
Model piling should meet following several respects requirement: can preferably reflect the stiffness difference of pile body and pile peripheral earth, energy
Suitably reflect the degree of roughness in Pile-soil contact face；Easy to process and laying testing element.When Model Pile is larger can be used with
The reinforced concrete pile or steel sheet pile of the identical absolute altitude of prototype are as Model Pile；Organic glass usable for lesser Model Pile,
The materials such as pvc pipe, epoxy resin, steel pipe, casing or copper rod are as Model Pile.Many scholars use casing as test pile at present
Body, connecting plate is as cushion cap, however the rigid connection of stake and cushion cap is testing crew problem in need of consideration, if it is considered that
It is improper to be easy to generate offset in prototype, it is not easy to obtain similarity rules, for going on smoothly for guarantee test process, is badly in need of invention
It is a kind of for the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap.
Summary of the invention
The purpose of the present invention is provide a kind of for the examination of pile foundation model to obtain similar rule in pile foundation model test
The conducting wire rigid-connecting device and its assemble method of the stake and cushion cap tested, this apparatus structure is simple, easy to assembly, and design rationally, is easy to
Operation, can either guarantee test go on smoothly, and can reflect the truth of prototype, save the cost, and the component
It can recycle.
To achieve the above object, the present invention adopts the following technical solutions:
It is a kind of for the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap, including screwing-in device and measuring system；
The measuring system includes punching pressure sensor, data collection system；The screwing-in device includes casing, plug, company
Fishplate bar, nut and pedestal；The connecting plate offers through-hole, described sleeve pipe is as test pile, upper part as cushion cap thereon
It is respectively equipped with screw thread with lower part, the top and plug lower part of casing cooperate, and the lower part of casing and base engagement, the top of plug are worn
It is inserted into the hole of connecting plate after crossing the punching pressure sensor, top realizes casing with the nut cooperation and exists
Fixation on connecting plate；The punching pressure sensor is connected with data collection system.
After to each component combination, total is embedded in the corresponding soil body, a corresponding clump of piles can be carried out and held
Carry the model investigation of characteristic.What stake top plug, punching pressure sensor and special nut after the completion of test can be convenient
It recycles.
Casing connection plate is preferred, and the plug includes upper and lower part, and two parts are cylinder, its underpart radius
Greater than upper radius, external screw thread is equipped in lower part and lower part.
Preferably, it is connected through a screw thread between the lower part of the plug and the casing.
Preferably, it is connected through a screw thread between the top of the plug and the nut.
Preferably, the top of plug is arranged in the punching pressure sensor, and is located at the bottom of connecting plate.
Preferably, the punching sensor can accurately measure the pressure change of connecting plate, outer diameter and casing it is outer
Diameter is identical, avoids generating enlarged footing, internal diameter is identical as the outer diameter in the middle part of stake top plug, together so as to fitting, and guarantees
Sliding that can be slight, is unlikely to stuck.
Preferably, the inner surface of the middle part of the plug and connecting plate aperture is smooth, and guaranteeing can be light before unlocked
Micro- sliding.
It is further preferred that the diameter of the through-hole upper and lower part is different, it is described for placing that groove-like is formed at top
Nut, nut top be lower than connecting plate top.
It is further preferred that the casing, connecting plate, nut and stake top plug are all made of aluminum material.
It is above-mentioned for the stake of pile foundation model test and the conducting wire rigid-connecting device and its assemble method of cushion cap, including walk as follows
It is rapid:
1) choose certain size hollow bushing, casing periphery at annular knurl does with knurling tool in professional institution, with increase with
The frictional force of the soil body opens up the internal thread of 20mm long on the inside of casing top；
2) through-hole is opened up in the different position of connecting plate, the diameter of through-hole upper and lower position is different, guarantees in professional lathe essence
Quasi- processing；
3) a certain number of stake top plugs are processed, the lower part of plug opens up the outer silk of certain length, and entire stake top plug is opened
If perforative circular hole；
4) nut of identical quantity specific dimensions is processed, two small sircle holes are opened up on nut, to be screwed with tool；
5) precession of stake top plug is blocked up punching pressure sensor fitting into stake top in the hollow bushing that step 1) obtains
Head；
6) by fitting above stake top plug into the connecting plate of aperture, and with special nut fixing compact；
7) after to each component combination, total is embedded in the corresponding soil body, a corresponding clump of piles can be carried out
The model investigation of bearer properties.
Preferably, in step 3), the outer filament length degree that stake top plug lower part opens up is 20mm.
Preferably, in step 3), stake top plug opens up perforative circular hole so that the data to pile end displacement are acquired.
Preferably, in step 7), special nut is screwed, and guarantees that punching pressure sensor is compacted up and down, so as to
Measure accurate pressure value.
Preferably, in step 7), the process screwed should ensure that verticality, will not occur inclination.
After to be tested, stake top plug, punching pressure sensor and special nut are recycled.
The present invention has studied the clump of piles bearer properties in pile foundation model test, solves stake and how rigidly connected cushion cap is
Technical problem completes anabolic process using special stake top plug, so that guarantee test is gone on smoothly, studies phase with forefathers
Than actually closer with engineering, the scope of application is wider.
The invention has the benefit that
1, stake and the rigid connection of cushion cap may be implemented in stake top plug of the invention, the punching pressure sensor being arranged between
The numerical value of stake top power can be accurately acquired, stake top plug opens up circular hole, can carry out acquiring pile end displacement data；
2, punching pressure sensor configurations of the invention are simple, small in size, very convenient from heavy and light, installation, export sensitive
Degree is high, linear, stability and reproducible.
3, the device of the invention structure is simple, easy to assembly, easily operated, light and handy nimble, reduces examination to a certain extent
Test cost；
4, the stake top plug and special nut are aluminum material, facilitate installation, and have high-low temperature resistant, light weight with
And open the convenient advantage of silk.
5, the recycling that stake top plug, punching pressure sensor and special nut after the completion of testing can be convenient.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the conducting wire rigid-connecting device schematic diagram of the stake and cushion cap for pile foundation model test；
Fig. 2 is the schematic three dimensional views of casing；
Fig. 3 is the schematic three dimensional views of stake top plug；
Fig. 4 is the schematic three dimensional views of nut；
Fig. 5 is the schematic three dimensional views of punching pressure sensor；
Wherein, 1, casing；2, stake top plug；3, punching pressure sensor；4, nut；5, connecting plate.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination；
In order to facilitate narration, if there is "upper", "lower" printed words in the present invention, the upper and lower with attached drawing itself is only indicated
To consistent, restriction effect is not played to structure, it is only for convenient for the description present invention and simplify description, rather than indicate or dark
Show that signified equipment or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.
As background technique is introduced, many scholars use casing as testing pile body at present, connecting plate as cushion cap,
However the rigid connection of stake and cushion cap is testing crew problem in need of consideration, if it is considered that improper be easy to produce in prototype
Raw offset, is not easy to obtain similarity rules, and for going on smoothly for guarantee test process, urgent need is invented one kind and tried for pile foundation model
The conducting wire rigid-connecting device of the stake and cushion cap tested, in order to solve technical problem as above, present applicant proposes one kind to be used for pile foundation mould
The stake of type test and the conducting wire rigid-connecting device and assemble method of cushion cap.
In a kind of typical embodiment of the application, as shown in Figure 1, a kind of stake and cushion cap for pile foundation model test
Conducting wire rigid-connecting device, including screwing-in device and measuring system,
Wherein, screwing-in device includes the casing 1, stake top plug 2, aperture connecting plate 5, nut of sequentially connected inner band silk
4, measuring system includes punching pressure sensor 3, data collection system.One end of stake top plug 2 and the band silk side of casing 1 connect
It connects, after the other end places punching pressure sensor 3, fitting is fixed on into the connecting plate 5 of aperture by the nut 4 of special size
The setting position of opening connecting plate 5.Punching pressure sensor 3 is connected to dedicated data collection system.It is complete to each component combination
Total is embedded in the corresponding soil body by Bi Hou, can carry out the model investigation of corresponding clump of piles bearer properties.
Casing 1, punching sensor 3, which are opened, to be sequentially connected between hole connecting plate 5 by stake top plug 2.
The purpose of stake top plug is to realize casing and connecting plate rigid connection, and pressure sensor is arranged therebetween, so as to
Measure Pile top force.
Preferably, above-mentioned casing 1, connecting plate 5, nut 4 and stake top plug 2 are all made of aluminum material.Facilitate installation, and
With high-low temperature resistant, light weight and open the convenient advantage of silk.
The lower end of the stake top plug 2 and the inside of casing open up outer silk and internal thread respectively, guarantee that the two being capable of the company of matching
It is connected together, and the two internal thread is identical with the length of outer silk, is 20mm.The top of stake top plug opens up the outer of certain length
Silk, so as to be spun together with the nut of special size.
Preferably, the punching sensor can accurately measure the variation of pressure, and outer diameter is identical as the outer diameter of aluminum pipe,
It avoids generating enlarged footing, internal diameter is identical as the outer diameter in the middle part of stake top plug, together so as to fitting, and guarantees slight
Sliding, be unlikely to stuck.
It is further preferred that punching pressure sensor uses high-strength spring steel or high resiliency aluminium alloy, by special
Shape, then select high-accuracy self-compensation adhesive type metallic resistance strain gauge as sensing element, stringent stickup protection and
Group bridge, is followed by universal data collecting system, can obtain stress numerical value automatically using special-purpose software function.Simple structure, body
Product is small, very convenient from heavy and light, installation, and output sensitivity is high, linear, stability and reproducible.Range 2t, precision 0.1%,
It is open in order to the extraction of pile end displacement measurement screw rod；The shape assumption diagram of the sensor is as shown in Figure 5；
Nut is the position in order to which stake top plug to be fixed on to connecting plate setting, so that punching pressure sensor equal quilt up and down
It compresses；The appearance structure of nut is as shown in figure 4, its outer surface is cylinder, and after being mounted on stake top plug 2, top surface wants low
In the top surface of connecting plate 5 or either flush with connecting plate 5；It is unlikely to generate protrusion.
As shown in figure 3, the middle part of stake top plug 2 and the inner surface of connecting plate aperture are smooth, guarantee before unlocked
The slight sliding of energy.It is further preferred that the diameter that the outer diameter and connecting plate lower part in the middle part of the stake top plug open up hole is equal
For 15mm.
It is further preferred that the stake top plug opens up circular hole, so as to the acquisition to pile end displacement data.
It is further preferred that the through-hole upper diameter of connecting plate is greater than lower diameter, a groove is formed at top, and groove is just
The nut that special size can be placed well is unlikely to generate protrusion.
For the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap and its assemble method, include the following steps:
1) choose certain size hollow bushing 1, casing periphery at annular knurl does with knurling tool in professional institution, with increase with
The frictional force of the soil body opens up the internal thread of 20mm long on the inside of 1 top of casing；
2) hole is opened up in the different position of connecting plate 5, the diameter of hole upper and lower position is different, guarantees in professional lathe essence
Quasi- processing；
3) a certain number of stake top plugs 2 are processed, the lower part of plug 2 opens up the outer silk of certain length, entire stake top plug 2
Open up perforative circular hole；
4) nut 4 of identical quantity specific dimensions is processed, opens up two small sircle holes on nut 4, to be incited somebody to action with professional tool
It is screwed；
5) the punching pressure sensor 3 of certain amount corresponding size is had made to order；
6) by 2 precession of stake top plug in the hollow bushing 1 that step 1) obtains, by 3 fitting of punching pressure sensor into stake
Push up plug 2；
7) by 2 top fitting of stake top plug into the connecting plate 5 of aperture, and with special 4 fixing compact of nut；
8) after to each component combination, total is embedded in the corresponding soil body, a corresponding clump of piles can be carried out
The model investigation of bearer properties；
9) stake top plug 2, punching pressure sensor 3 and special nut 4 are recycled.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to invention protection scope
Limitation, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not required to
It is still within the scope of the present invention to make the creative labor the various modifications or changes that can be made.
Claims (10)
1. a kind of for the stake of pile foundation model test and the conducting wire rigid-connecting device of cushion cap, which is characterized in that including screwing-in device and
Measuring system；The measuring system includes punching pressure sensor, data collection system；The screwing-in device includes set
Pipe, plug, connecting plate, nut and pedestal；The connecting plate offers through-hole, described sleeve pipe is as examination as cushion cap thereon
Stake is tested, upper part and lower part are respectively equipped with screw thread, and the top and plug lower part of casing cooperate, the lower part of casing and base engagement,
The top of plug is inserted into the hole of connecting plate after passing through the punching pressure sensor, and top cooperates with the nut
Realize fixation of the casing on connecting plate；The punching pressure sensor is connected with data collection system.
2. a kind of as described in claim 1 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
Include upper and lower two parts in, the plug, two parts are cylinder, and its underpart radius is greater than upper radius, in lower part and
Lower part outer ring is equipped with external screw thread, and inside is equipped with through-hole.
3. a kind of as claimed in claim 2 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
In being connected through a screw thread between the lower part of the plug and the casing.
4. a kind of as claimed in claim 2 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
In being connected through a screw thread between the top of the plug and the nut.
5. a kind of as claimed in claim 2 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
In the top of plug is arranged in the punching pressure sensor, and is located at the bottom of connecting plate.
6. a kind of as described in claim 1 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
In the punching sensor can accurately measure the variation of pressure, and outer diameter is identical as the outer diameter of casing, in internal diameter and plug
The outer diameter in portion is identical.
7. a kind of as described in claim 1 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
In the middle part of the plug and the inner surface of connecting plate aperture are smooth, guarantee sliding that can be slight before unlocked.
8. a kind of as described in claim 1 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
In the diameter of the through-hole upper and lower part is different, and top forms groove-like and is used to place the nut, and nut top is low
In the top of connecting plate.
9. a kind of as described in claim 1 exist for the stake of pile foundation model test with the conducting wire rigid-connecting device of cushion cap, feature
In the casing, connecting plate, nut and stake top plug are all made of aluminum material.
10. the assembling of the conducting wire rigid-connecting device of the stake and cushion cap a method as claimed in any one of claims 1-8 for pile foundation model test
Method, which comprises the steps of:
1) hollow bushing of certain size is chosen, casing periphery is at annular knurl does with knurling tool in professional institution, with increase and the soil body
Frictional force, open up internal thread on the inside of casing top；
2) through-hole is opened up in the different position of connecting plate, the diameter of through-hole upper and lower part is different, guarantees precisely to add in professional lathe
Work；
3) a certain number of stake top plugs are processed, the lower part of plug opens up the outer silk of certain length, and entire stake top plug, which opens up, to be passed through
The circular hole worn；
4) nut of identical quantity specific dimensions is processed, opens up two small sircle holes on nut；
5) by the precession of stake top plug in the hollow bushing that step 1) obtains, by punching pressure sensor fitting into stake top plug；
6) it by fitting above stake top plug into the connecting plate of aperture, and is secured with nuts close；Guarantee on punching pressure sensor
Under be compacted, so as to measure accurate pressure value；The process screwed should ensure that verticality, will not occur inclination；
7) after to each component combination, total is embedded in the corresponding soil body, corresponding clump of piles carrying can be carried out
The model investigation of characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227683.9A CN109469110B (en) | 2018-10-22 | 2018-10-22 | Rigid connection device for pile and bearing platform for pile foundation model test and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227683.9A CN109469110B (en) | 2018-10-22 | 2018-10-22 | Rigid connection device for pile and bearing platform for pile foundation model test and assembling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109469110A true CN109469110A (en) | 2019-03-15 |
| CN109469110B CN109469110B (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811227683.9A Active CN109469110B (en) | 2018-10-22 | 2018-10-22 | Rigid connection device for pile and bearing platform for pile foundation model test and assembling method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600998A (en) * | 2003-09-26 | 2005-03-30 | 中国科学院武汉岩土力学研究所 | Model test equipment for unsaturated earth pile base |
| JP2006057380A (en) * | 2004-08-23 | 2006-03-02 | Takenaka Komuten Co Ltd | Load testing method for piled raft foundation |
| CN103558044A (en) * | 2013-11-05 | 2014-02-05 | 上海理工大学 | Indoor model testing apparatus for analyzing influences of shield tunnel grouting construction on adjacent pile foundations |
| CN204326121U (en) * | 2014-12-06 | 2015-05-13 | 国家电网公司 | For the experimental rig of transmission line foundation test |
| CN204849855U (en) * | 2015-07-29 | 2015-12-09 | 武汉科技大学 | Clump of piles field test's model device |
| CN205712223U (en) * | 2016-04-28 | 2016-11-23 | 上海理工大学 | A kind of model pile tube test connecting device |
-
2018
- 2018-10-22 CN CN201811227683.9A patent/CN109469110B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600998A (en) * | 2003-09-26 | 2005-03-30 | 中国科学院武汉岩土力学研究所 | Model test equipment for unsaturated earth pile base |
| JP2006057380A (en) * | 2004-08-23 | 2006-03-02 | Takenaka Komuten Co Ltd | Load testing method for piled raft foundation |
| CN103558044A (en) * | 2013-11-05 | 2014-02-05 | 上海理工大学 | Indoor model testing apparatus for analyzing influences of shield tunnel grouting construction on adjacent pile foundations |
| CN204326121U (en) * | 2014-12-06 | 2015-05-13 | 国家电网公司 | For the experimental rig of transmission line foundation test |
| CN204849855U (en) * | 2015-07-29 | 2015-12-09 | 武汉科技大学 | Clump of piles field test's model device |
| CN205712223U (en) * | 2016-04-28 | 2016-11-23 | 上海理工大学 | A kind of model pile tube test connecting device |
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| Publication number | Publication date |
|---|---|
| CN109469110B (en) | 2021-12-28 |
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