CN206986939U - A kind of pile for prestressed pipe bearing capacity of pile tip test device - Google Patents
A kind of pile for prestressed pipe bearing capacity of pile tip test device Download PDFInfo
- Publication number
- CN206986939U CN206986939U CN201720910482.3U CN201720910482U CN206986939U CN 206986939 U CN206986939 U CN 206986939U CN 201720910482 U CN201720910482 U CN 201720910482U CN 206986939 U CN206986939 U CN 206986939U
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- CN
- China
- Prior art keywords
- pile
- prestressed pipe
- bearing capacity
- jack
- test device
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of pile for prestressed pipe bearing capacity of pile tip test device, belong to test equipment field.The reinforcing of hollow prestress pile tube pile-end soil is realized by the interior taper shoe for having a hollow channel；The quantitative predication of pile for prestressed pipe bearing capacity of pile tip is realized by bearing capacity of pile tip test device, so as to the bearing capacity characteristics of the pile for prestressed pipe after the completion of the construction of more accurate perception.This method principle is simple and reliable, easy to operate, and applicable working condition is extensive, is influenceed by construction condition smaller.
Description
Technical field
The utility model belongs to test equipment field, and in particular to one kind is used for pile for prestressed pipe bearing capacity of pile tip test dress
Put.
Background technology
Pile foundation engineering suffers from as an important step in engineering construction to the quality and economic benefit of whole engineering
Very important influence.In pile foundation engineering, pile for prestressed pipe has that steady quality is reliable, concrete strength of pile is high, resistance to hammer
The advantages that good, short construction period of beating property, effect on environment are small, case unit capacity low cost, has been widely used in building in recent years
In the foundation engineering for building thing and structures.
But, because construction method is improper, easily there is hidden danger of quality, often in Practical Project work progress in pile for prestressed pipe
Required effect is not reached, a large amount of practice datas show that its pile side friction of pile for prestressed pipe is generally possible to after the completion of construction
Meet design requirement, but there is the situation more relatively low than design load because the reasons such as the floating of pile for prestressed pipe are easy in end resistance,
So as to influence the safe normal use of pile for prestressed pipe.Therefore, a kind of prestressing force that can directly test after the completion of construction is developed
Safe handling of the apparatus and method of pile tube bearing capacity of pile tip for ensureing basis is particularly important.
The content of the invention
In view of the pile for prestressed pipe after the completion of construction, easily there is relatively low situation in its bearing capacity of pile tip value, so that
The bearing capacity of pile for prestressed pipe is unsatisfactory for design requirement, it is therefore desirable to pile-end soil is reinforced as far as possible, and invented a set of
Apparatus and method for the test of pile for prestressed pipe bearing capacity of pile tip are tested to it, to ensure the construction quality of pile foundation.
Solving the technical scheme that concrete technical problems use is：
Pile for prestressed pipe bearing capacity of pile tip test device, it includes pile for prestressed pipe pile body, taper shoe and built-in carrying
Force test device, taper shoe are divided into embedded part and conical section, and embedded part makes two embedded in pile for prestressed pipe pile body bottom
Person connects as one；Described built-in test of bearing capacity device includes driving the swelling bag of breathing and by fluid-operated by fluid
Jack, swelling bag and jack are positioned over inside pile for prestressed pipe pile body, and jack peaks at swelling bag and taper shoe
Embedded part between；The blister cavities of swelling bag and the fluid intake of jack are connected to pile for prestressed pipe stake by pipeline respectively
Top；The swelling bag can form the mistake for providing deboost for jack with pile for prestressed pipe pile body inner chamber upon inflation
It is full of cooperation.
Preferably, opening up the hollow channel for connecting the embedded part top surface and side bottom in taper shoe, use
In carrying out pile grouting by passage.
Preferably, described fluid is gas and/or liquid.
Preferably, described swelling bag is by the hard cylinder positioned at center and is wrapped in the circumferential utricule of hard cylinder
Composition, described hard cylinder are used to provide impetus for jack.
The beneficial effects of the utility model are as follows：
1. pile for prestressed pipe bearing capacity of pile tip test device of the present utility model, available for the prestressing force after the completion of construction
The bearing capacity of pile tip of pile tube is quickly tested, the auxiliary without other heavy mechanical equipments；
2. in taper shoe of the pile for prestressed pipe stake end installation with hollow channel, can be realized by pile grouting
Reinforcing to pile-end soil, bearing capacity of pile tip can be improved to a certain extent；
3. the device of pile for prestressed pipe bearing capacity of pile tip test can reuse, testing cost can be effectively reduced.
Brief description of the drawings
The structural representation of test of bearing capacity device built in Fig. 1；
Fig. 2 is pile for prestressed pipe bearing capacity of pile tip test device structure overall schematic；
In figure：Taper shoe 1, pile for prestressed pipe pile body 2, the first pipeline 3, second pipe 4, swelling bag 5, jack 6, stream
Body 7.
Embodiment
The utility model is further illustrated with implementation steps below in conjunction with the accompanying drawings.
As illustrated in fig. 1 and 2, a kind of pile for prestressed pipe bearing capacity of pile tip test device, the test device are by prestressed pipe
What stake and the built-in test of bearing capacity device being built in pile for prestressed pipe stake formed.Its pile for prestressed pipe stake bag being applicable
Include hollow pile for prestressed pipe pile body 2 and taper shoe 1, taper shoe 1 divide for embedded part and conical section, embedded part it is embedding
Both are connected as one in the bottom of pile for prestressed pipe pile body 2.Because pile for prestressed pipe is after pile sinking, easily produce on pile body
Emerge as so that bearing capacity of pile tip is more relatively low than design load, influenceing the safe normal use of pile for prestressed pipe.Therefore, this implementation
In example, hollow channel is opened up in taper shoe 1, for carrying out pile grouting by passage.Hollow channel connects embedded part
Top surface and embedded part side, its slip casting outlet is located just at embedded part side bottom (close to conical section top surface position
Put).If pile body floats, pile body certain gap will occur in the conical section top surface of taper shoe 1, now can be with
Slip casing by pressure is carried out by hollow channel, gap herein is filled up, by pile for prestressed pipe stake, taper shoe 1 and pile-end soil weight
Newly combine together, improve bearing capacity of pile tip.
As shown in figure 1, built-in test of bearing capacity device includes being driven the swelling bag 5 of breathing by fluid 7 and being driven by fluid 7
Jack 6, in the case of unaerated, its section is less than pile body inner chamber, therefore can be positioned over for swelling bag 5 and jack 6
Inside pile for prestressed pipe pile body 2 and move up and down.Swelling bag 5 is by the hard cylinder positioned at center and is wrapped in hard cylinder week
To utricule form, hard cylinder can be made of rigid material, and the one end of jack 6 directly branch is peaked on the hard cylinder, is used
In as impetus, utricule needs the elastomeric material using high-strength wearable, to prevent from occurring breakage in pile body friction process.
The blister cavities of utricule is used to store fluid 7, and blister cavities is connected to stake top by the first pipeline 3 through hard cylinder, set by pump etc.
It is standby to inject gas or liquid thereto.The entrance of fluid 7 of jack 6 is connected to pile for prestressed pipe stake top also by second pipe 4,
For injecting gas or liquid thereto.Certainly, when the fluid 7 of injection is different, jack 6 is also required to carry out corresponding type selecting.
When needing to carry out test of bearing capacity, built-in test of bearing capacity device is sink to certain depth, jack 6 is peaked at swelling bag
Between 5 and the embedded part of taper shoe 1.Now, can not be that jack 6 provides the reverse of abundance due to the unaerated of swelling bag 5
Support force.Therefore, first expand swelling bag 5, formed and be interference fitted with the inner chamber of pile for prestressed pipe pile body 2, rubbed by enough
It is that jack 6 provides deboost to wipe power.Then, fluid 7 is being injected into jack 6, jack 6 is right by taper shoe 1
Pile-end soil applies pressure, and monitors its sedimentation
Based on above-mentioned pile for prestressed pipe bearing capacity of pile tip test device, a kind of bearing capacity of pile tip test side can also be provided
Method, step are as follows：
Step 1, before prestressed pipe sunk pile, the embedded part of taper shoe 1 is inserted to stake end, it is necessary to ensure it
The reliability of installation.The pile for prestressed pipe being completed then is sunk into precalculated position, then according to advance engineering design and
The requirement of site operation, Grouting Pipe is directed to the construction that the hollow channel reserved in taper shoe 1 carries out pile-end soil grouting and reinforcing
Operation；
After the completion of step 2, slip casting, Grouting Pipe is taken out, carries out test of bearing capacity.First, by built-in test of bearing capacity device
Enter pile body space inner bottom part from stake top decentralization, jack 6 is peaked at the top surface of taper shoe 1.Then by being connected with swelling bag 5
The first pipeline 3 fluid 7 is injected into swelling bag 5, expand it and be pressed in the inner side of pile for prestressed pipe pile body 2, so as to realize
The fixation of device.The injection rate of fluid 7 is needed depending on thrust needed for jack 6, if available thrust is insufficient, needs to continue
Fill fluid 7.After swelling bag 5 expands, continue through the second pipe 4 being connected with jack 6 and fluid 7 injected into jack 6,
It is brought pressure to bear on taper shoe 1 and be transferred in pile-end soil, so as to draw the P-S curves of pile-end soil, thus obtain pre- answer
The bearing capacity of pile tip size of solenoid stake；
After the completion of step 3, test, the fluid 7 in swelling bag 5 and jack 6 is discharged by pipeline, and will be whole
Device takes out out of pile for prestressed pipe pile body 2, cleans up rear pending next group of test.
The utility model realizes the reinforcing of hollow prestress pile tube pile-end soil by the interior taper shoe for having a hollow channel；
The quantitative predication of pile for prestressed pipe bearing capacity of pile tip is realized by bearing capacity of pile tip test device, so as to which more accurate perception is constructed
After the completion of pile for prestressed pipe bearing capacity characteristics.This method principle is simple and reliable, easy to operate, and applicable working condition is extensive, by existing
Field execution conditions influence smaller.
Embodiment described above is a kind of preferable scheme of the present utility model, so itself and be not used to limit this practicality
It is new.Those of ordinary skill about technical field, can be with the case where not departing from spirit and scope of the present utility model
Make a variety of changes and modification.Therefore the technical scheme that all modes for taking equivalent substitution or equivalent transformation are obtained, all falls within
In the scope of protection of the utility model.
Claims (4)
1. a kind of pile for prestressed pipe bearing capacity of pile tip test device, it is characterised in that including hollow pile for prestressed pipe pile body, cone
Shape shoe and built-in test of bearing capacity device, taper shoe are divided into embedded part and conical section, and embedded part is embedded in prestressing force
Tubular pile body bottom connects as one both；Described built-in test of bearing capacity device includes driving the expansion of breathing by fluid
Capsule and it is positioned over by fluid-operated jack, swelling bag and jack inside pile for prestressed pipe pile body, and jack peaks at
Between swelling bag and the embedded part of taper shoe；The blister cavities of swelling bag and the fluid intake of jack are connected by pipeline respectively
It is connected to pile for prestressed pipe stake top；The swelling bag can be formed with pile for prestressed pipe pile body inner chamber for being jack upon inflation
The interference fit of deboost is provided.
2. pile for prestressed pipe bearing capacity of pile tip test device as claimed in claim 1, it is characterised in that opened up in taper shoe
The embedded part top surface and the hollow channel of side bottom are connected, for carrying out pile grouting by passage.
3. pile for prestressed pipe bearing capacity of pile tip test device as claimed in claim 1, it is characterised in that described fluid is gas
Body and/or liquid.
4. pile for prestressed pipe bearing capacity of pile tip test device as claimed in claim 1, it is characterised in that described swelling bag by
Positioned at center hard cylinder and be wrapped in the circumferential utricule composition of hard cylinder, it is jack that described hard cylinder, which is used for,
Impetus is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720910482.3U CN206986939U (en) | 2017-07-25 | 2017-07-25 | A kind of pile for prestressed pipe bearing capacity of pile tip test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720910482.3U CN206986939U (en) | 2017-07-25 | 2017-07-25 | A kind of pile for prestressed pipe bearing capacity of pile tip test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206986939U true CN206986939U (en) | 2018-02-09 |
Family
ID=61416248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720910482.3U Withdrawn - After Issue CN206986939U (en) | 2017-07-25 | 2017-07-25 | A kind of pile for prestressed pipe bearing capacity of pile tip test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206986939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313472A (en) * | 2017-07-25 | 2017-11-03 | 浙江大学 | Pile for prestressed pipe bearing capacity of pile tip test device and method |
-
2017
- 2017-07-25 CN CN201720910482.3U patent/CN206986939U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313472A (en) * | 2017-07-25 | 2017-11-03 | 浙江大学 | Pile for prestressed pipe bearing capacity of pile tip test device and method |
| CN107313472B (en) * | 2017-07-25 | 2022-10-04 | 浙江大学 | Device and method for testing bearing capacity of pile end of prestressed pipe pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180209 Effective date of abandoning: 20221004 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180209 Effective date of abandoning: 20221004 |