CN205839820U - A kind of vibration pile pulling test device - Google Patents
A kind of vibration pile pulling test device Download PDFInfo
- Publication number
- CN205839820U CN205839820U CN201620555942.0U CN201620555942U CN205839820U CN 205839820 U CN205839820 U CN 205839820U CN 201620555942 U CN201620555942 U CN 201620555942U CN 205839820 U CN205839820 U CN 205839820U
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- voice coil
- coil motor
- base plate
- guide rail
- vertical
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Abstract
The utility model discloses a kind of vibration pile pulling test device, the lower section of device is provided with soil box, four ribs along soil box are provided with four identical longerons of length, it is provided above parallel to each other three crossbeam and two curb girders at longeron, below second cross beam, it is provided with vertical load maintainer, below vertical load maintainer, is provided with vertical motion mechanism；Vertical displacement sensor in vertical motion mechanism is connected with Dynamic Data Acquiring instrument, and Dynamic Data Acquiring instrument is connected with computer.This device can simulate oscillatory load and the combination of vertical load that steel pipe pile foundation is born, uplift force size, frequency of vibration and amplitude during surveying record pile pulling, and the displacement of steel-pipe pile, has accuracy and reliability.The calculating of the design to pile foundation engineering, bearing capacity of pile foundation and anti-pulling capacity is significant.
Description
Technical field
This utility model relates to a kind of pile foundation test device, particularly relates to a kind of vibration pile pulling test device.
Background technology
Pile foundation is that one has a long history and the most vigorous base form, along with sending out of economic society
Exhibition and the appearance of new material, pile foundation by natural materials such as wood, bamboo, stones to the Materials such as concrete and steel.Steel
By force, therefore steel-pipe pile is widely used in ocean engineering field and promotes for resistance to compression and tensile strength height and shear resistance.
Therefore, Study on Steel pile tube on the process of pulling out there is important theory significance and engineer applied be worth.
Vibration pile pulling is as what the development of vibrating machine got up, is a kind of novel pile foundation construction method.
Found by research, under the effect of oscillatory load, the friction between soil particle can be reduced to a certain extent, and then reduction is pulled out
Soil resistance during stake, raising efficiency of construction, and frequency and the amplitude of oscillatory load can be adjusted in work progress easily,
To adapt to different geological conditions, reach optimal efficiency of construction.Compared with traditional paddle type mill piling, pile vibrosinking has without making an uproar
Sound and the feature of the environmental pollution without greasy dirt splashing, construction quality is good and expense is low.In this sense, pile vibrosinking has
Significantly the feature of environmental protection and high efficiency, the most also have preferable development prospect and economic benefit.
Utility model content
The utility model proposes a kind of vibration pile pulling test device so that small diameter steel pipe piles is at default periodic vibration
Pile pulling under the effect of load, it is achieved the process of vibration pile pulling, and then analyze the size of uplift force, the size of amplitude and frequency is to steel
Pull out the impact of process on pile tube, assess the anti-pulling capacity size of steel-pipe pile simultaneously.
In order to solve above-mentioned technical problem, this utility model is achieved through the following technical solutions:
A kind of vibration pile pulling test device, is provided with in the lower section of device by base plate and the four sides side plate group being perpendicular to base plate
The soil box become, four ribs along soil box are provided with four identical longerons of length, and the bottom of longeron is connected with base plate, at longeron
It is provided above parallel to each other three article crossbeam (first crossbeam, second cross beam and the 3rd crossbeam) and two articles of curb girders, second cross beam
Equal with the distance of first crossbeam and the 3rd crossbeam, below second cross beam, it is provided with vertical load maintainer, vertical load maintainer
Lower section is provided with vertical motion mechanism；
Wherein vertical load maintainer includes Mobile base, electronic cylinder rod and electric cylinder, and Mobile base is arranged on vertical load maintainer
Upper end, affixed with second cross beam, electric cylinder is arranged on the lower end of vertical load maintainer, and electronic cylinder rod is arranged on electric cylinder,
Electronic cylinder rod can move up and down (below driving when electronic cylinder rod moves, vertical motion mechanism moves together) along electric cylinder；
Wherein the bottom of vertical motion mechanism is a disc stake connection dish, for being attached with pile body, in stake even
Flange is provided above stake and connects stringer board；
The latter half connecting stringer board side in stake arranges vertical displacement sensor, connects the first half of stringer board side in stake
Dividing and be connected with voice coil motor by stringer board contiguous block, voice coil motor includes voice coil motor first component, voice coil motor second component
With voice coil motor the 3rd parts, the outside of voice coil motor the 3rd parts is provided with voice coil motor base plate；
The opposite side connecting stringer board in stake is provided with guide rail contiguous block, is provided with voice coil motor and leads on guide rail contiguous block
Rail, guide rail contiguous block can be at voice coil motor slide on rails, and the outside of voice coil motor guide rail is provided with voice coil motor guide rail base plate；
Two blocks of voice coil motor side plates, voice coil motor base plate, voice coil motor guide rail base plate it is provided with in the both sides of voice coil motor
With the outer wall that voice coil motor side plate collectively constitutes voice coil motor and other intrawares；
The upper transverse plane of voice coil motor base plate and voice coil motor guide rail base plate is provided with screwed hole, the two by with spiral shell
Pit is connected with the bottom of the electronic cylinder rod of vertical load maintainer.
Vertical displacement sensor is connected with Dynamic Data Acquiring instrument, and Dynamic Data Acquiring instrument is connected with computer.
Described voice coil motor is that one directly drives linear electric motors, using the teaching of the invention it is possible to provide vertical motion source at a high speed, drives stake
Connection dish does vertical periodic vibration, it is achieved the vertical periodic reverse motion of steel-pipe pile, amplitude 0-2mm, and frequency is 0-20Hz.
A kind of using method vibrating pile pulling test device, follows these steps to carry out:
Step 1: the steel-pipe pile of installation test, is arranged on charger bottom by steel-pipe pile, is connected dish with stake and fixes；
Step 2: back-up sand, inserts in soil box by sand layering, often completes one layer with cylinder by real for soil pressure, the most repeatedly until
Reach predetermined absolute altitude；
Step 3: open voice coil motor and less amplitude and frequency are set, open electric cylinder and setting less on pull out
Power, opens Dynamic Data Acquiring instrument and computer, the uplift displacement amount of record steel-pipe pile.
Step 4: strengthen amplitude and frequency, or strengthen uplift force, repeat previous step, until steel-pipe pile reaches to pull out brokenly
Bad；
Step 5: after off-test, closes voice coil motor, electric cylinder and Dynamic Data Acquiring instrument successively, according to pile pulling power and
The relation of uplift displacement amount, calculates uplift bearing capacity.
Compared with prior art, the beneficial effects of the utility model are: be applicable to the small-sized steel-pipe pile pullout tests than chi,
This device can simulate oscillatory load and the combination of vertical load that steel pipe pile foundation is born, during surveying record pile pulling on pull out
Power size, frequency of vibration and amplitude, and the displacement of steel-pipe pile, have suitable accuracy and reliability.To pile foundation engineering
Design, the calculating of bearing capacity of pile foundation and anti-pulling capacity is significant.This experimental provision simple in construction, easy to use,
Fast, strong operability, it is convenient to install and uninstall, repeatable utilization, economic and practical, it is easy to promote.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is vertical load maintainer structural representation of the present utility model.
Fig. 3 is vertical motion mechanism structure schematic diagram.
Fig. 4 is the in-house structural representation of vertical motion.
Fig. 5 this utility model uses the overall schematic of state.
The displacement of steel-pipe pile-uplift force curve chart in Fig. 6 embodiment.
In figure: 1 is longeron, 2 is curb girder, and 3-1 is first crossbeam, and 3-2 is second cross beam, and 3-3 is the 3rd crossbeam, and 4 is soil
Groove, 4-1 is base plate, and 4-2 is side plate, and 4-3 is rib, and 5 is Mobile base, and 6 is vertical load maintainer, and 7 is vertical motion mechanism, and 8 are
Electronic cylinder rod, 9 is electric cylinder, and 10 is voice coil motor guide rail base plate, and 11 is voice coil motor side plate, and 12 is voice coil motor, and 12-1 is
Voice coil motor first component, 12-2 is voice coil motor second component, and 12-3 is voice coil motor the 3rd parts, and 13 is at the bottom of voice coil motor
Plate, 14 is stake connection dish, and 15 connect stringer board for stake, and 16 is vertical displacement sensor, and 17 is voice coil motor guide rail, and 18 for guide rail even
Connecing block, 19 is stringer board contiguous block, and 20 is Dynamic Data Acquiring instrument, and 21 is computer, and 22 is screwed hole.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings:
A kind of vibration pile pulling test device, is provided with in the lower section of device by base plate and the four sides side plate group being perpendicular to base plate
The soil box become, four ribs along soil box are provided with four identical longerons of length, and the bottom of longeron is connected with base plate, at longeron
It is provided above parallel to each other three article crossbeam (first crossbeam, second cross beam and the 3rd crossbeam) and two articles of curb girders, second cross beam
Equal with the distance of first crossbeam and the 3rd crossbeam, below second cross beam, it is provided with vertical load maintainer, vertical load maintainer
Lower section is provided with vertical motion mechanism；
Wherein vertical load maintainer includes Mobile base, electronic cylinder rod and electric cylinder, and Mobile base is arranged on vertical load maintainer
Upper end, affixed with second cross beam, electric cylinder is arranged on the lower end of vertical load maintainer, and electronic cylinder rod is arranged on electric cylinder,
Electronic cylinder rod can move up and down (below driving when electronic cylinder rod moves, vertical motion mechanism moves together) along electric cylinder；
Wherein the bottom of vertical motion mechanism is a disc stake connection dish, for being attached with pile body, in stake even
Flange is provided above stake and connects stringer board；
The latter half connecting stringer board side in stake arranges vertical displacement sensor, connects the first half of stringer board side in stake
Dividing and be connected with voice coil motor by stringer board contiguous block, voice coil motor includes voice coil motor first component, voice coil motor second component
With voice coil motor the 3rd parts, the outside of voice coil motor the 3rd parts is provided with voice coil motor base plate；
The opposite side connecting stringer board in stake is provided with guide rail contiguous block, is provided with voice coil motor and leads on guide rail contiguous block
Rail, guide rail contiguous block can be at voice coil motor slide on rails, and the outside of voice coil motor guide rail is provided with voice coil motor guide rail base plate；
Two blocks of voice coil motor side plates, voice coil motor base plate, voice coil motor guide rail base plate it is provided with in the both sides of voice coil motor
With the outer wall that voice coil motor side plate collectively constitutes voice coil motor and other intrawares；
The upper transverse plane of voice coil motor base plate and voice coil motor guide rail base plate is provided with screwed hole, the two by with spiral shell
Pit is connected with the bottom of the electronic cylinder rod of vertical load maintainer.
Vertical displacement sensor is connected with Dynamic Data Acquiring instrument, and Dynamic Data Acquiring instrument is connected with computer.
Described voice coil motor is that one directly drives linear electric motors, using the teaching of the invention it is possible to provide vertical motion source at a high speed, drives stake
Connection dish does vertical periodic vibration, it is achieved the vertical periodic reverse motion of steel-pipe pile, amplitude 0-2mm, and frequency is 0-20Hz.
Below to study the long 50cm of Pile in Sand, stake footpath 30mm, process that the vibration of the steel-pipe pile of wall thickness 5mm is pulled out is as reality
Execute example, follow these steps to carry out:
Step 1: the steel-pipe pile of installation test, is arranged on charger bottom by steel-pipe pile, is connected dish with stake and fixes.
Step 2: back-up sand, this test uses fine sand as foundation soil body, inserts in soil box by sand layering, every layer of sand
Being highly 15cm, often completing one layer with cylinder by soil pressure reality, the most repeatedly until reaching predetermined absolute altitude.
Step 3: open voice coil motor and less amplitude and frequency are set: A=2mm, f=5HZ, open electric cylinder and set
Put less uplift force: 20～40N, open Dynamic Data Acquiring instrument and computer, the uplift displacement amount of record steel-pipe pile.
Step 4: increasing uplift force is to 5～10N, until steel-pipe pile reaches to pull out destruction, the uplift displacement of record steel-pipe pile.
Step 5: after off-test, closes voice coil motor, electric cylinder and Dynamic Data Acquiring instrument successively, according to pile pulling power and
The relation of uplift displacement amount, calculates uplift bearing capacity.
Read steel-pipe pile uplift displacement data under different oscillatory load effects in a computer, be plotted in and with displacement be
Transverse axis, in uplift force is the coordinate system of the longitudinal axis, can obtain the displacement-uplift force curve chart of steel-pipe pile, as shown in Figure 6.
Above this utility model is described in detail, but described content has been only preferred embodiment of the present utility model,
It is not to be regarded as limiting practical range of the present utility model.All impartial changes made according to this utility model application range with
Improve, within all should still belonging to patent covering scope of the present utility model.
Claims (1)
1. a vibration pile pulling test device, it is characterised in that: it is provided with in the lower section of device by base plate and is perpendicular to base plate
The soil box of side plate composition on four sides, four ribs along soil box are provided with four identical longerons of length, the bottom of longeron and base plate
Being connected, be provided above parallel to each other three crossbeam and two curb girders at longeron, second cross beam is horizontal with first crossbeam and the 3rd
The distance of beam is equal, is provided with vertical load maintainer, is provided with vertical motion below vertical load maintainer below second cross beam
Mechanism；
Wherein vertical load maintainer includes Mobile base, electronic cylinder rod and electric cylinder, and Mobile base is arranged on the upper of vertical load maintainer
End, electric cylinder is arranged on the lower end of vertical load maintainer, and electronic cylinder rod is arranged on electric cylinder, and electronic cylinder rod can be along electric cylinder
Lower movement；
Wherein the bottom of vertical motion mechanism is a disc stake connection dish, for being attached with pile body, at stake connection dish
It is provided above stake and connects stringer board；
The latter half connecting stringer board side in stake arranges vertical displacement sensor, and the top half connecting stringer board side in stake is led to
Crossing stringer board contiguous block to be connected with voice coil motor, voice coil motor includes voice coil motor first component, voice coil motor second component and sound
Circle motor the 3rd parts, are provided with voice coil motor base plate in the outside of voice coil motor the 3rd parts；
The opposite side connecting stringer board in stake is provided with guide rail contiguous block, is provided with voice coil motor guide rail, leads on guide rail contiguous block
Rail contiguous block can be at voice coil motor slide on rails, and the outside of voice coil motor guide rail is provided with voice coil motor guide rail base plate；
Two blocks of voice coil motor side plates, voice coil motor base plate, voice coil motor guide rail base plate and sound it is provided with in the both sides of voice coil motor
Circle motor side plate collectively constitutes the outer wall of voice coil motor and other intrawares；
The upper transverse plane of voice coil motor base plate and voice coil motor guide rail base plate is provided with screwed hole, the two by with screwed hole
It is connected with the bottom of the electronic cylinder rod of vertical load maintainer；
Vertical displacement sensor is connected with Dynamic Data Acquiring instrument, and Dynamic Data Acquiring instrument is connected with computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620555942.0U CN205839820U (en) | 2016-06-03 | 2016-06-03 | A kind of vibration pile pulling test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620555942.0U CN205839820U (en) | 2016-06-03 | 2016-06-03 | A kind of vibration pile pulling test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205839820U true CN205839820U (en) | 2016-12-28 |
Family
ID=57624171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620555942.0U Withdrawn - After Issue CN205839820U (en) | 2016-06-03 | 2016-06-03 | A kind of vibration pile pulling test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205839820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887945A (en) * | 2016-06-03 | 2016-08-24 | 天津大学 | Vibration pile pulling test device and application method thereof |
-
2016
- 2016-06-03 CN CN201620555942.0U patent/CN205839820U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887945A (en) * | 2016-06-03 | 2016-08-24 | 天津大学 | Vibration pile pulling test device and application method thereof |
| CN105887945B (en) * | 2016-06-03 | 2018-06-15 | 天津大学 | A kind of vibration pile pulling test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161228 Effective date of abandoning: 20180615 |