CN105019486B - Inclined steel-pipe pile self-balancing approach load box test structure and method of testing - Google Patents
Inclined steel-pipe pile self-balancing approach load box test structure and method of testing Download PDFInfo
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- CN105019486B CN105019486B CN201510494443.5A CN201510494443A CN105019486B CN 105019486 B CN105019486 B CN 105019486B CN 201510494443 A CN201510494443 A CN 201510494443A CN 105019486 B CN105019486 B CN 105019486B
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- pipe pile
- load box
- inclined steel
- steel
- helical pitch
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- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 238000013459 approach Methods 0.000 title claims abstract description 12
- 238000010998 test method Methods 0.000 title description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims description 36
- 239000000725 suspension Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Abstract
Inclined steel-pipe pile self-balancing approach load box test structure, including inclined steel-pipe pile, is located at inclined steel-pipe pile internal loading case, it is characterised in that: overhead gage and lower baffle plate are installed in described inclined steel-pipe pile, described lower baffle plate offers chute；Helical pitch steel wire extends to below chute and connects in its bottom have block, described inclined steel-pipe pile top to be provided with helical pitch ring through load box, and helical pitch steel wire extends to the top of inclined steel-pipe pile setting fastening on helical pitch ring；Compared with prior art, the invention have the advantage that the construction of this device is simple, the tilt adjustable particular for inclined steel-pipe pile saves the angle of datum line beam simultaneously, makes both the most corresponding；After construction completes, load box can be drawn out recycling, is suitable for promoting the use of.
Description
Technical field
The invention belongs to Bridge Inspection field, be specifically related to a kind of inclined steel-pipe pile self-balancing test of bearing capacity load box and
Method of testing.
Background technology
Load box is the special charger of one of building trade pile foundation bearing capacity self-balance test, is one group (one
Individual or multiple) structural assembly of jack (pressure unit).Common load box, is generally divided into the common oil cylinder of slipper seal
(piston type or plunger type) be working cell and with cavate seal pressure unit for working cell two types.Close based on cavate
The advantage of encapsulation technique, in the application in pile measurement field, cavate pressure unit high-volume replaces traditional slipper seal
Jack.
The open a kind of load box for the test of open caisson self-balancing approach of knowing clearly of public announcement of a patent application CN103147465A, including load box
Hydraulic oil pipe that body, hydraulic jack and hydraulic jack are sequentially connected and hydraulic loading device；Described load casing includes annular
Steel plate, lower doughnut-shaped steel plate, outer ring baffle plate, annular baffle plate, wherein, upper doughnut-shaped steel plate is the most relative with lower doughnut-shaped steel plate to be set
Putting, annular baffle plate and outer ring baffle plate are respectively provided at doughnut-shaped steel plate and the inner side of lower doughnut-shaped steel plate and periphery, and with upper annular
Steel plate and lower doughnut-shaped steel plate constitute airtight casing, and when hydraulic jack prestrain, upper doughnut-shaped steel plate and lower doughnut-shaped steel plate can be respective
Move up and down；Described hydraulic jack is located in load box body, and the bottom of hydraulic jack is connected on lower doughnut-shaped steel plate, hydraulic jack
Piston contact with upper doughnut-shaped steel plate；The described load box for the test of open caisson self-balancing approach also includes for testing upper doughnut-shaped steel plate
Displacement transfer device with lower doughnut-shaped steel plate displacement.
It is a kind of by the well-designed load box that can be used for and loading, this device master for using the topmost device of self-balancing peg
To be made up of the hydraulic jack of the location load-bearing steel plate connected at two sections pile crown and inside.Load box is fixed on piling bar thing
At the equilibrium point first calculated, pressed by built-in hydraulic jack, location-plate and hypomere stake in promotion, it is achieved upper and lower two joints
Stake is moved the most up and down, by the displacement transfer device being connected on load box, displacement signal is delivered to ground, according to
Reading draws corresponding curve, it is judged that pile bearing capacity, pile foundation settlement, stake elastic compression and ground plastic deformation.Pre-by both sides
First be embedded in the reinforcing steel strain gauge in pile body, can under load at different levels is obtained in reasoning the pile shaft force at each stake interface, frictional resistance with
Load and the transfer law of change in depth.
One of feature of inclined steel-pipe pile is exactly that pile body is angled with gravity vertical, when can play withdrawal resistance and be pulled in shore by boats and ships
Horizontal impact power be transferred to rock stratum.On long piled wharf, Application comparison is extensive, additionally such as footbridge, in order to increase its stability,
Opposing river waterflow to footbridge basis horizontal thrust and other horizontal forces, be also adopted by inclined steel-pipe pile, must for, its construction
Technical difficulty is higher.
Inclined steel-pipe pile majority is squeezed into opening, and soil can pour in inside steel-pipe pile, additionally can produce bigger piling impact
Power, makes to be deformed at load box special joint, causes the load box displacement generation changing of the relative positions to cannot be carried out test, and load box tests
After can not take out recycling, for specific load box, its processing cost is relative with resource not environmentally.
Summary of the invention
The shortcoming that the present invention is directed to prior art, it is proposed that a kind of inclined steel-pipe pile self-balancing approach load box test structure and test
Method, this structure and method simple in construction, easy to operate, it is suitable for promoting the use of.
For realizing the purpose of the present invention, the technical solution used in the present invention is:
Inclined steel-pipe pile self-balancing approach load box test structure, including inclined steel-pipe pile, is located at inclined steel-pipe pile internal loading case, it is characterised in that:
Overhead gage and lower baffle plate are installed in described inclined steel-pipe pile, described lower baffle plate offers chute；Helical pitch steel wire prolongs through load box
Reaching below chute and connecting in its bottom has block, described inclined steel-pipe pile top to be provided with helical pitch ring, and helical pitch steel wire extends to steel pipe
The top of taper pile through helical pitch ring；
Described inclined steel-pipe pile is arranged over datum line beam, and described datum line beam one end is provided with pivoting support one, is provided with below pivoting support one
Elevator, the described datum line beam other end is provided with pivoting support two；Magnetic gauge stand it is fixed with, under Magnetic gauge stand on described datum line beam
Side is provided with displacement transducer, and connecting below displacement transducer has displacement bar；Described displacement bar totally 4, wherein: two displacement bars
The upper plate connecting load box shifts up for measurement, and two other displacement bar connects the lower shoe of load box and is used for measuring downwards
Displacement, described pivoting support two is also equipped with digital angle instrument.
Preferentially, the internal diameter of described overhead gage is more than the internal diameter of lower baffle plate；It is also equipped with supporting construction on described load box.
Preferentially, described supporting construction includes fagging and is connected to the fixed block above upper plate, and shifting chute is located at fagging two
Side, is hinge structure between described fagging and fixed block, and fagging can rotate around fixed block, is provided with and hangs in described shifting chute
Hooked scarf, connects rope and is connected to above suspension hook block and extends outside inclined steel-pipe pile.
Based on said apparatus, the invention allows for a kind of inclined steel-pipe pile self-balancing approach load box test structured testing method,
It is characterized in that, comprise the following steps:
1) set inclined steel-pipe pile, and the sediment in inclined steel-pipe pile is removed clean with reacting cycle sediment separator；
2) by helical pitch steel wire through load box and helical pitch ring, load box is made to move down on lower baffle plate, lotus along the track of helical pitch steel wire
Carry in case folding process, connect rope and be in tension, make fagging be upturned, it is simple to supporting construction passes through overhead gage；
3) start reference for installation beam, make datum line beam make displacement bar be parallel to each other with inclined steel-pipe pile by elevator lift adjustment, read number
The angles of display of word inclinometer confirms that displacement bar is the most parallel with inclined steel-pipe pile, and sets displacement transducer, and connects data
Acquisition Instrument；
4) loosening connection rope, make in 90 degree between fagging and fixed block, now fagging withstands inclined steel-pipe pile, and load box is fixed, and surveys
Before examination, preparation terminates；
5) beginning through high-pressure oil pump to test to the oil-filled loading of load box, displacement transducer constantly detects displacement data, until surveying
Examination terminates；
6) by connection rope tension, constantly on carry, load box, along by moving on helical pitch steel wire, finally takes out.
Compared with prior art, the invention have the advantage that the construction of this device is simple, inclining particular for inclined steel-pipe pile simultaneously
The angle of rake angle scalable datum line beam, makes both the most corresponding；After construction completes, load box can be drawn out recycling,
Environmental protection, is suitable for promoting the use of.
Accompanying drawing explanation
The most next the accompanying drawing by means of embodiment carries out brief description to the present invention.In accompanying drawing:
Fig. 1 shows the schematic diagram of inclined steel-pipe pile self-balancing approach load box of the present invention test structure；
Fig. 2 shows the structural representation of supporting construction of the present invention；
Fig. 3 shows the structural representation of datum line beam of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in those skilled in the art
Member is further appreciated by the present invention, but limits the present invention the most in any form.It should be pointed out that, the ordinary skill people to this area
For Yuan, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into the present invention's
Protection domain.
Embodiment 1
As it can be seen, inclined steel-pipe pile self-balancing approach load box test structure, including inclined steel-pipe pile 3, it is located at inclined steel-pipe pile 3 internal loading case
6, overhead gage 8 and lower baffle plate 10 are installed in described inclined steel-pipe pile 3, the internal diameter of overhead gage 8 more than and lower baffle plate 10 interior
Footpath；So load box 6 can wear only lower baffle plate 10 by overhead gage 8, and lower baffle plate 10 offers chute 11；Helical pitch steel
Silk 2 extends to connect below chute 11 and in its bottom have block 12, described inclined steel-pipe pile 3 top to be provided with through load box 6
Helical pitch ring 1, helical pitch steel wire 2 extends to the top of inclined steel-pipe pile 3 and through helical pitch ring 1, owing to helical pitch steel wire 2 is to load box
The limited displacement of 6 is set for use, can effectively prevent load box 6 from colliding with inclined steel-pipe pile 3, and helical pitch steel wire 2 top is sliding
Wheel tension.
Inclined steel-pipe pile 3 is arranged over datum line beam 17, and described datum line beam 17 one end is provided with pivoting support 1, hinged
Being provided with elevator 14 below seat 1, described datum line beam 17 other end is provided with pivoting support 2 50；Described datum line beam 17
On be fixed with Magnetic gauge stand 18, be provided with displacement transducer 15 below Magnetic gauge stand 18, below displacement transducer 15 connect have position
Move bar 16；Described displacement bar 16 totally 4, wherein: two displacement bars connect the upper plate 4 of load box 6 for measuring upwards
Displacement, two other displacement bar connects the lower shoe 7 of load box 6 for measuring to bottom offset, on described pivoting support 2 50
Being also equipped with digital angle instrument 51, digital angle instrument 51 connects computer by data wire, and staff passes through data digital angle
The angle of display datum line beam 17 skew of degree instrument 51 determines that displacement bar 16 is the most parallel with inclined steel-pipe pile 3.
Being also equipped with supporting construction 9 on load box 6, supporting construction 9 includes fagging 904 and is connected to above upper plate 4
Fixed block 906, shifting chute 901 is located at fagging 904 both sides, is hinge structure between described fagging 904 and fixed block 906,
Fagging 904 can rotate around fixed block 906, is provided with suspension hook block 902 in described shifting chute 901, connects rope and is connected to hang
Hooked scarf 902 above and extends outside inclined steel-pipe pile 3, connects rope and fagging 904 can be pulled to rotate, and connecting rope is nylon
Rope or steel wire rope.
Based on said apparatus, the invention allows for a kind of inclined steel-pipe pile self-balancing approach load box test structured testing method,
It is characterized in that, comprise the following steps:
1) position that precalculated load box 6 is placed, has welded overhead gage 8 and lower baffle plate 10, by 2 steel-pipe weldings to a piece
Form inclined steel-pipe pile 3, set inclined steel-pipe pile 3, and the sediment in inclined steel-pipe pile 3 is removed dry with reacting cycle sediment separator
Only；
2) by helical pitch steel wire 2 through load box 6 and helical pitch ring 1, load box 6 is made to move down into lower block along the track of helical pitch steel wire 2
On plate 10, in load box 6 folding process, connect rope and be in tension, make fagging 904 be upturned, it is simple to support
Structure 9 passes through overhead gage 8；
3) start reference for installation beam 17, make datum line beam 17 make displacement bar 16 and inclined steel-pipe pile 3 phase by elevator 14 lift adjustment
The most parallel, the angles of display reading digital angle instrument 51 confirms that displacement bar 16 is the most parallel with inclined steel-pipe pile 3, and sets position
Displacement sensor 15, and connect data collecting instrument；
4) loosening connection rope, make in 90 degree between fagging 904 and fixed block 906, now fagging 904 withstands inclined steel-pipe pile 3, lotus
Carrying case 6 to be fixed, before test, preparation terminates；
5) beginning through high-pressure oil pump to test to the oil-filled loading of load box 6, displacement transducer 15 constantly detects displacement data, directly
Terminate to test；
6) by connection rope tension, constantly on carry, load box 6, along by moving on helical pitch steel wire 2, finally takes out.
Claims (1)
1. inclined steel-pipe pile self-balancing approach load box test structure, including inclined steel-pipe pile (3), is located at inclined steel-pipe pile (3) internal loading case
(6), it is characterised in that: overhead gage (8) and lower baffle plate (10), described lower baffle plate are installed in described inclined steel-pipe pile (3)
(10) chute (11) is offered on；Helical pitch steel wire (2) extends to chute (11) lower section, helical pitch through load box (6)
The bottom of steel wire (2) connects has block (12), described inclined steel-pipe pile (3) top to be provided with helical pitch ring (1), helical pitch steel wire
(2) the other end extends to the top of inclined steel-pipe pile (3) and through helical pitch ring (1)；
Described inclined steel-pipe pile (3) is arranged over datum line beam (17), and described datum line beam (17) one end is provided with pivoting support one
(13), pivoting support one (13) lower section is provided with elevator (14), and described datum line beam (17) other end is provided with hinged
Seat two (50)；Being fixed with Magnetic gauge stand (18) on described datum line beam (17), Magnetic gauge stand (18) lower section is provided with displacement sensing
Device (15), displacement transducer (15) lower section connects displacement bar (16)；Described displacement bar (16) totally 4, wherein:
The upper plate (4) of two displacement bars connection load box (6) shifts up for measurement, and two other displacement bar connects load box
(6) lower shoe (7) is for measuring to bottom offset；It is also equipped with digital angle instrument on described pivoting support two (50)
(51)；
The internal diameter of described overhead gage (8) is more than the internal diameter of lower baffle plate (10)；Load box (6) can be worn not by overhead gage (8)
Cross lower baffle plate (10)；Supporting construction (9) it is also equipped with on described load box (6)；
Described supporting construction (9) includes fagging (904) and is connected to upper plate (4) fixed block (906) above, shifting chute
(901) it is located at fagging (904) both sides, is hinge structure between described fagging (904) and fixed block (906), fagging
(904) can rotate around fixed block (906), in described shifting chute (901), be provided with suspension hook block (902), connect rope
It is connected to suspension hook block (902) and above and extends inclined steel-pipe pile (3) outside.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494443.5A CN105019486B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and method of testing |
| CN201610303227.2A CN105951895B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and test method |
| CN201610303323.7A CN105862938B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494443.5A CN105019486B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and method of testing |
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| CN201610303323.7A Division CN105862938B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and test method |
| CN201610303227.2A Division CN105951895B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and test method |
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| CN105019486A CN105019486A (en) | 2015-11-04 |
| CN105019486B true CN105019486B (en) | 2016-11-30 |
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| CN201510494443.5A Active CN105019486B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and method of testing |
| CN201610303323.7A Active CN105862938B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and test method |
| CN201610303227.2A Active CN105951895B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and test method |
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| CN201610303227.2A Active CN105951895B (en) | 2015-08-12 | 2015-08-12 | Inclined steel-pipe pile self-balancing approach load box test structure and test method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252554B (en) * | 2018-08-23 | 2020-10-02 | 东南大学 | Self-balancing load box capable of being provided with optical fiber and installation method thereof |
| CN112789486B (en) * | 2019-07-05 | 2024-03-08 | 林振宇 | Force and inclination monitoring system with self-locating identification |
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| GB2401189A (en) * | 2003-02-28 | 2004-11-03 | Roxbury Ltd | Friction and bearing force testing apparatus |
| CN103147465A (en) * | 2013-03-04 | 2013-06-12 | 东南大学 | Load box for testing open caisson with self-balancing method |
| JP2013174096A (en) * | 2012-02-27 | 2013-09-05 | Taisei Corp | Loading test device for pile |
| CN103422517A (en) * | 2013-08-23 | 2013-12-04 | 南昌永祺科技发展有限公司 | Stacked pile body self-counter-force balance load box |
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| CN100464176C (en) * | 2006-01-11 | 2009-02-25 | 孔清华 | Self-balancing static load measuring method for pile |
| CN201317945Y (en) * | 2008-11-18 | 2009-09-30 | 中国电力科学研究院 | Load box used for self-balancing test of dig-type foundation bearing force |
| KR101188004B1 (en) * | 2009-12-22 | 2012-10-04 | 성균관대학교산학협력단 | Loading Device For Pile Load Test |
| CN202039388U (en) * | 2011-01-17 | 2011-11-16 | 东南大学 | Load box for testing bearing capacity of steel pipe pile |
| CN102121254B (en) * | 2011-01-17 | 2012-07-18 | 东南大学 | Load box for testing bearing capacity of steel pipe pile |
| CN102953400A (en) * | 2012-11-14 | 2013-03-06 | 东南大学 | Load box for self-balanced method testing of concrete pipe pile |
| CN204435439U (en) * | 2015-01-12 | 2015-07-01 | 宋博琪 | A kind of foundation pile static load detects uses Novel self-balanced load box |
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2015
- 2015-08-12 CN CN201510494443.5A patent/CN105019486B/en active Active
- 2015-08-12 CN CN201610303323.7A patent/CN105862938B/en active Active
- 2015-08-12 CN CN201610303227.2A patent/CN105951895B/en active Active
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|---|---|---|---|---|
| GB2401189A (en) * | 2003-02-28 | 2004-11-03 | Roxbury Ltd | Friction and bearing force testing apparatus |
| JP2013174096A (en) * | 2012-02-27 | 2013-09-05 | Taisei Corp | Loading test device for pile |
| CN103147465A (en) * | 2013-03-04 | 2013-06-12 | 东南大学 | Load box for testing open caisson with self-balancing method |
| CN103422517A (en) * | 2013-08-23 | 2013-12-04 | 南昌永祺科技发展有限公司 | Stacked pile body self-counter-force balance load box |
| CN204163118U (en) * | 2014-08-28 | 2015-02-18 | 浙江龙舜建设集团有限公司 | Self-balancing peg structure |
| CN204849858U (en) * | 2015-08-12 | 2015-12-09 | 舟山市智海技术开发有限公司 | Steel tube pile self -balance method load box test structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105862938B (en) | 2018-05-11 |
| CN105951895B (en) | 2018-07-17 |
| CN105019486A (en) | 2015-11-04 |
| CN105951895A (en) | 2016-09-21 |
| CN105862938A (en) | 2016-08-17 |
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Address after: 313000 No. 581 Fenghuang Road, Huzhou City, Zhejiang Province Patentee after: Nuclear industry Huzhou Engineering Survey Institute Co., Ltd Address before: 313000 Huzhou, Zhejiang Province, 666 Ring Road 1, three floor Patentee before: NUCLEAR INDUSTRY HUZHOU ENGINEERING INVESTIGATION INSTITUTE |
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Address after: No. 581, Fenghuang Road, Huzhou City, Zhejiang Province, 313000 Patentee after: Nuclear industry Huzhou survey, planning, design and Research Institute Co.,Ltd. Address before: No. 581, Fenghuang Road, Huzhou City, Zhejiang Province, 313000 Patentee before: Nuclear industry Huzhou Engineering Survey Institute Co.,Ltd. |