CN110409523A - A kind of load box of two-tube reversible unidirectional grouting under pressure - Google Patents
A kind of load box of two-tube reversible unidirectional grouting under pressure Download PDFInfo
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- CN110409523A CN110409523A CN201910757463.5A CN201910757463A CN110409523A CN 110409523 A CN110409523 A CN 110409523A CN 201910757463 A CN201910757463 A CN 201910757463A CN 110409523 A CN110409523 A CN 110409523A
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- flagpole
- load box
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- cylinder
- under pressure
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- 230000002441 reversible effect Effects 0.000 title claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 210000003205 muscle Anatomy 0.000 claims description 57
- 238000007569 slipcasting Methods 0.000 claims description 41
- 238000004513 sizing Methods 0.000 claims description 34
- 239000002360 explosive Substances 0.000 claims description 17
- 230000003068 static effect Effects 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 15
- 230000003014 reinforcing effect Effects 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 239000012530 fluid Substances 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 210000004262 dental pulp cavity Anatomy 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 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
Abstract
The present invention relates to a kind of with two-tube load box, especially a kind of two-tube reversible unidirectional grouting under pressure can reinforced load case.Inlet, liquid outlet is arranged in the cylinder body two sides of hydraulic device in a kind of load box of two-tube reversible unidirectional grouting under pressure, including hydraulic device, and inlet and the liquid outlet high settings such as not, one is located at the upper end of cylinder body, another is located at the middle-end of cylinder body.The present invention has the advantage that 1, the full rate that ensure that slurry quality, improve load box；2, after solving foundation pile self-balanced static-load testing, broken pile problem caused by can not being discharged because of the liquid of force load, to make the load box being reinforced and engineering pile form the entirety of continuous bearing upper load by grouting and reinforcing load box, foundation pile pile strength and integrality ensure that.
Description
Technical field
The present invention relates to a kind of a kind of reinforcing with two-tube load box, especially two-tube reversible unidirectional grouting under pressure
Load box.
Background technique
In foundation pile self-balanced static-load testing, the load box used, a universal only liquid injection pipe, so that load after experiment
Full of noncondensing liquid forever between the cylinder body and piston of cabinet, causes stake to generate under engineering Vertical Compression state and squeeze out liquid
Generate displacement.
Although liquid grout can be realized out by two root canals now with load box, since two root canals are in cylinder body upper end
Same absolute altitude, so that often the extruding on liquid outlet absolute altitude can only be discharged when slip casting, and can not will be under liquid outlet absolute altitude
Liquid drain, cause injection slurry be diluted, reduce the concentration of slurries, can not meet reinforcement criteria.
Summary of the invention
Present invention aim to address problems of the prior art, one kind is provided guarantee while can be realized slip casting
The load box of the two-tube reversible unidirectional grouting under pressure of slurry quality, the full rate of raising.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of lotus of two-tube reversible unidirectional grouting under pressure
Case, including hydraulic device are carried, inlet, liquid outlet are set in the cylinder body two sides of hydraulic device, inlet is not contour with liquid outlet
Setting, one is located at the upper end of cylinder body, another is located at the middle-end of cylinder body.
Preferably, the intracorporal piston of the cylinder of hydraulic device is upper and lower non-constant section plunger body.
Preferably, plunger body is composed of the identical cylinder of radius and trough of belt cylinder, and trough of belt cylinder is located at plunger body
Upper end.
Preferably, the slot cross-section of trough of belt cylinder is plane, cambered surface or the conical surface.
Preferably, plunger body is composed of two different cylinders of radius, and the small cylinder of radius is located at the upper of plunger body
End.
It further, further include the explosive grouting device of tool-type level pressure, the explosive grouting device of tool-type level pressure includes outside cylinder
Slip casting vertical tube, L shape commutation multi-function device and horizontally-guided device；The outer slip casting vertical tube of cylinder is two, and top is pierced by
Plate, bottom end can infuse in bottom plate, the outer slip casting vertical tube of vertical component insertion cylinder of L shape commutation multi-function device outside cylinder
It is moved up and down in slurry vertical tube, horizontal component is fixed with bottom plate and is connected to horizontally-guided device, and horizontally-guided device is connected to L
Shape commutation multi-function device.
Preferably, the vertical component length of L shape commutation multi-function device is greater than self-balancing static load test pile test termination condition
When plunger body shift value.
It further, further include sizing guiding flagpole muscle, sizing guiding flagpole muscle includes flag muscle, flagpole and bar sheath, flag muscle
It is connect with flagpole, bar sheath is installed on the tail portion of flagpole；Sizing guiding flagpole muscle in top is through upper plate, bottom plate or sticks plate, bottom plate
Edge, flag muscle are fixed with upper plate, part mounting rod sheath of the flagpole under bottom plate；Sizing guiding flagpole muscle in lower part runs through bottom plate
Or patch bottom edge, flag muscle are fixed with bottom plate, the flagpole mounting rod sheath between upper plate and bottom plate.
Preferably, the flagpole length of top sizing guiding flagpole muscle is greater than load box height and self-balancing static load test pile is tested
The sum of the shift value of plunger body when termination condition；The flagpole length of lower part sizing guiding flagpole muscle is less than load box height and is greater than
The shift value of plunger body when self-balancing static load test pile tests termination condition.
Preferably, the shift value of plunger body when bar sheath height is greater than self-balancing static load test pile test termination condition.
It preferably, further include end top, end top is fixed on the tail portion of flagpole, and section is greater than the section of flagpole.
Preferably, multiple hydraulic devices are connected by connecting tube.
Compared with prior art, the present invention has the advantage that
1, slurry quality, the full rate for improving load box be ensure that；
2, after solving foundation pile self-balanced static-load testing, broken pile problem caused by can not being discharged because of the liquid of force load, from
And so that the load box being reinforced and engineering pile is formed the entirety of continuous bearing upper load by grouting and reinforcing load box, guarantee
Foundation pile pile strength and integrality.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is hydraulic device structure schematic diagram in Fig. 1；
Fig. 3 is multiple hydraulic device cascaded structure schematic diagrames in the embodiment of the present invention；
Fig. 4 is the explosive grouting device structural schematic diagram of tool-type level pressure in Fig. 1；
Fig. 5 is the vertical component of L shape commutation multi-function device and the outer slip casting vertical tube configuration schematic diagram of cylinder in Fig. 4；
Fig. 6 is the multi-functional sizing guiding flagpole muscle structural schematic diagram in the middle and upper part Fig. 1；
Fig. 7 is the multi-functional sizing guiding flagpole muscle structural schematic diagram in the middle and lower part Fig. 1；
Fig. 8-1 is hydraulic device fluid injection pressurization flow chart in the embodiment of the present invention；
Fig. 8-2 is that hydraulic device inflates drain flow chart in the embodiment of the present invention；
Fig. 8-3 is hydraulic device slip casting flow chart in the embodiment of the present invention；
Fig. 9 be in the embodiment of the present invention into tool-type level pressure explosive grouting device slip casting flow chart；
Figure 10 is multi-functional sizing guiding flagpole muscle operation schematic diagram in the embodiment of the present invention；
In figure, 1, upper plate；2, hydraulic device；3, connecting tube；4, the explosive grouting device of tool-type level pressure；5, bottom plate；6, upper displacement
Silk；7, upper displacement silk sheath；8, the multi-functional sizing in top is oriented to flagpole muscle；9, the multi-functional sizing in lower part is oriented to flagpole muscle；20, liquid
Cylinder pressure body；21, high-order pipe；22, low level pipe；23, upper and lower non-constant section plunger body；24, sealing joint strip；40, bottom offset silk；41,
The outer slip casting vertical tube of cylinder；42, L shape commutation multi-function device；43, horizontally-guided device；80, flag muscle；81, flagpole；82, bar sheath；
83, end top；90, flag muscle；91, flagpole；92, bar sheath；93, end top.
Specific embodiment
It should be noted that in the present embodiment, noun of locality " upper and lower " etc. is described according to shown in attached drawing, no
It is construed as limiting the invention.
1-10 is further described the present invention with reference to the accompanying drawing: as shown in Figure 1, a kind of two-tube reversible unidirectional pressurization
The load box of slip casting, by upper plate 1, hydraulic device 2, connecting tube 3, the explosive grouting device 4 of tool-type level pressure, bottom plate 5, upper displacement silk
6, upper displacement silk sheath 7, the multi-functional sizing guiding flagpole muscle 9 of the multi-functional sizing guiding flagpole muscle 8 in top and lower part form.
Upper displacement silk sheath 7 is two, is separately mounted to be symmetrically distributed on two pieces of cushion blocks of upper plate 1, upper displacement silk 6 is set
It is positioned in an up and moves in silk sheath 7, measurement load box displacement can be directly connect with load box upper plate 1, bottom plate 5, can also be embedded to
Concrete directly measures pile body shifting, for measuring load box displacement or pile body shifting.
As shown in Fig. 2, hydraulic device 2 is by hydraulic cylinder 20, high-order pipe 21, low level pipe 22, upper and lower non-constant section plunger body
23 and sealing joint strip 24 form.
The high-order pipe 21 of hydraulic device is in the upper end of hydraulic cylinder 20, a diameter of d2, low level pipe 22 is in hydraulic cylinder 20
Middle-end, a diameter of d1, liquid in-out mouth accomplishes reversible unidirectional, i.e. fluid injection in fluid injection pressurization and slip casting not in same absolute altitude
It when pressurization and slip casting, can be injected from high-order pipe, the discharge of low level pipe；It can also be injected from low level pipe, the discharge of high-order pipe, while can also be with
The liquid in hydraulic cylinder 20 is drained in slip casting, it will be under liquid outlet absolute altitude so as to avoid the two-tube load box of tradition
Liquid drains and the slurry of injection is caused to be diluted, and reduces the concentration of slurries, can not meet reinforcement criteria.
In hydraulic device, upper and lower 23 distance from top hydraulic cylinder distance of non-constant section plunger body is h, plunger body notch distance
Hydraulic cylinder distance is a, and plunger body Edge Distance hydraulic cylinder distance is b.Wherein, h is slightly larger than d2, a > b；The value of b is very
Small, i.e. plunger body and cylinder body only has subtle gap, while for hydraulic device better seal, in plunger body and hydraulic cylinder 20
Between be arranged sealing joint strip 24.
Plunger body can be composed of the identical cylinder of radius and trough of belt cylinder.Slot cross-section can be plane, cambered surface, the conical surface
Deng；It can also be composed of two different cylinders of radius.
As shown in figure 3, multiple hydraulic devices can be connected by connecting tube 3, to realize load box entirety liquid feeding and slip casting.
As illustrated in figures 4-5, the explosive grouting device 4 of tool-type level pressure is by bottom offset silk 40, bottom offset silk sheath and outer slip casting
Vertical conduit 41, L shape commutation multi-function device 42, horizontally-guided device 43 form.The outer slip casting vertical tube 41 of cylinder is two, top
End is pierced by upper plate 1, and bottom end is inserted into the outer slip casting vertical tube 41 of cylinder close to bottom plate, the vertical component of L shape commutation multi-function device 42,
And can be moved up and down in slip casting vertical tube 41 outside cylinder, horizontal component is welded with bottom plate 5 and is connected to horizontally-guided device 43,
Horizontally-guided device is connected to L shape commutation multi-function device 42；Bottom offset silk 40 can be fixed on bottom offset silk sheath and outer slip casting is hung down
On straight tube 41, the outer diameter of L shape commutation multi-function device 42 is d3, the internal diameter of the simultaneous outer slip casting vertical tube of bottom offset silk sheath is d4, d3
< d4.L shape commutates 42 horizontal component bearing capacity of multi-function device as PL1, the bearing capacity of horizontally-guided device 43 is PL2,
PL1> PL2.On when the vertical component length L of L shape commutation multi-function device 42 is greater than self-balancing static load test pile test termination condition
The shift value of lower non-constant section plunger body.
The outer slip casting vertical tube of cylinder and bottom offset silk sheath integral are integrated into multi-functional tube, both can avoid bottom offset silk quilt
Concrete bonds, while but also as the vertical conduit of slip casting outside cylinder.Bottom offset silk shield is connected by L shape commutation multi-function device
The horizontally-guided device for covering simultaneous outer slip casting vertical conduit and being pressurized explosive plays the role of draining deflecting.Meanwhile it can also be in device
Upper fixed bottom offset silk.Using the horizontally-guided device that can be pressurized explosive, slip casting outside the bottom offset silk sheath and cylinder at both ends is hung down
Straight tube and L shape commutation multi-function device organic linking guide slurry that can enter from one end, the other end overflows at access.It is overflowing
After outlet sampling, end seal will be overflowed and closed, then inject slurry from upstream end high pressure and flow explosive device up to igniting horizontal single-headed, compeled
It flows to slurry naturally and fills up the gap at load box.
Multi-functional sizing guiding flagpole muscle includes the multi-functional sizing guiding of the multi-functional sizing guiding flagpole muscle 8 in top and lower part
Flagpole muscle 9.Multi-functional sizing is oriented to steel reinforcement cage required by the reinforcing bar model, quantity and Pile integrity of flagpole muscle and matches.
As shown in fig. 6, the multi-functional sizing in top is oriented to flagpole muscle 8 flag muscle 80, flagpole 81 as made of bar bending, bar sheath
82 are composed with end top 83；Flag muscle 80 is triangle, and flagpole 81 is connect on one side with certain of flag muscle 80, it is preferred that flag muscle and flag
Bar is integrally formed, the tail portions that end top 83 is fixed on flagpole 81, and section is greater than the section of flagpole 81, and 82 sets of bar sheath in flagpole 81
On, and end top 83 is covered in bar sheath 82.The multi-functional sizing in top guiding flagpole muscle 8 runs through upper plate 1 and bottom plate 5, and 80, flag muscle
In on upper plate 1, and its side for being fixed with flagpole 81 and upper plate 1 weld, and can play guiding role and the required loudspeaker of specification
Muscle effect；Flagpole 81 passes through upper plate, bottom plate, is pierced by the part suit bar sheath of bottom plate, the multi-functional sizing guiding flagpole muscle 8 in top
Flagpole length is L3, L3Non-constant section plunger body above and below when greater than load box height and self-balancing static load test pile test termination condition
The sum of shift value.The position of non-constant section plunger body above and below when 82 height of bar sheath is greater than self-balancing static load test pile test termination condition
Shifting value.
As shown in fig. 7, the multi-functional sizing in lower part is oriented to flagpole muscle 9 flag muscle 90, flagpole 91 as made of bar bending, bar sheath
92 are composed with end top 93；Flag muscle 90 is triangle, and flagpole 91 is connect on one side with certain of flag muscle 90, it is preferred that flag muscle and flag
Bar is integrally formed, the tail portions that end top 93 is fixed on flagpole 91, and section is greater than the section of flagpole 91, and 92 sets of bar sheath in flagpole 91
On, and end top 93 is covered in bar sheath 92；The flagpole length of the multi-functional sizing guiding flagpole muscle 9 in lower part is L4, L4Less than load box
Highly.The shift value of non-constant section plunger body above and below when 92 height of bar sheath is greater than self-balancing static load test pile test termination condition.Under
The multi-functional sizing guiding flagpole muscle 9 in portion runs through bottom plate 5, and flag muscle 90 is located under bottom plate, and its side for being fixed with flagpole 91 and bottom plate 5
It welds, bar sheath 92 is set on the flagpole between upper plate and bottom plate.
In fluid injection pressurization, displacement that hydraulic cylinder and upper and lower non-constant section plunger body are generated due to thrust and lead to this
There is zone of fracture in place；When detection test grouting behind shaft or drift lining, since upper and lower flagpole interlocks each other, exposed flagpole muscle bonds rear shape by slip casting
At reinforcing bar and the cooperative section of concrete, to strengthen the resistance to compression and pulling test strength in the section.Make steel reinforcement cage exempt from
Load box being directly welded to connect, while making the joint welding section of steel reinforcement cage that can meet code requirement, not in same section absolute altitude.
Bar sheath can ensure that flagpole is freely up and down moved without limitation not by the constraint of concrete, can be exposed in zone of fracture after experiment.
Work step:
One, fluid injection is pressurizeed: when fluid injection is pressurizeed, closed high position pipe is injected from low level pipe；Low level pipe can also be closed, is managed from a high position
Injection.
1, in non-fluid injection, plunger body is in initial position；1=P2 of pressure value P=P3, such as Fig. 8-1(1) shown in；
2, start fluid injection pressurization, if injected from high-order pipe, 1 > P2 > P3 of pressure value P；If injected from low level pipe, press
Force value P3 > P2 > P1, as shown in Fig. 8-1 (2)；
3, continue fluid injection pressurization, until reaching stopping when meeting self-balancing static load test pile test termination condition, pressure value after stopping
P1=P2=P3, such as Fig. 8-1(3) shown in；
Two, it inflates drain: after the completion of fluid injection, starting to inflate drain；When inflating drain, high position pipe and low level Guan Jun are not closed, and
Can only height fill low row.
4, start to inflate drain, open closed high-order pipe or low level pipe, then inject gas from high-order pipe, gas is from upper
It is packed into cylinder body under and, squeezes liquid and is discharged from low level pipe, 1 > P2 > P3 of pressure value P.Such as Fig. 8-2(4) shown in；
5, lasting inflation indicates that liquid has drained in cylinder, stops inflation until low level pipe no longer goes out liquid, pressure value P 1 after stopping=
P2=P3.Such as Fig. 8-2(5) shown in；
Three, slip casting: after low level pipe no longer goes out liquid, start slip casting；When slip casting, it can be injected from high-order pipe, it can also be from low level pipe
Injection.
6, start slip casting, if injected from high-order pipe, 1 > P2 > P3 of pressure value P；If injected from low level pipe, press
Force value P3 > P2 > P1, such as Fig. 8-3(6) shown in；
7, continue slip casting, until another side pipe stops after having slurry to overflow, 1=P2 of pressure value P=P3 after stopping, such as Fig. 8-3(7) institute
Show；
Four, the slip casting into tool-type level pressure explosive grouting device
8, after foundation pile casting concrete, into hydraulic device, fluid injection is pressurizeed, and upper and lower non-constant section plunger body can stretch out cylinder body, thus
One of zone of fracture can be formed in load box；Outer slip casting vertical tube, which can also generate, identical is displaced phase with upper and lower non-constant section plunger body
Same displacement.As shown in Fig. 9 (1)；
9, pass through the slip casting into the explosive grouting device of tool-type level pressure of outer slip casting vertical tube.As shown in Fig. 9 (2)；
10, continue slip casting, until another side pipe has slurry to overflow.After sampling, end seal will be overflowed to close, then is injected from upstream end high pressure
Slurry forces slurry to flow to naturally and fills up the gap at load box until ignition horizontally-guided device.As shown in Fig. 9 (3)；
Five, multi-functional sizing is oriented to flagpole muscle
1, when foundation pile casting concrete, concrete is filled in load box.As shown in Figure 10 (1)；
2, after foundation pile casting concrete, in fluid injection pressurization, cylinder body and upper and lower non-constant section plunger body are generated due to thrust
It is displaced and leads to occur at this zone of fracture, the multi-functional sizing guiding flagpole muscle in top remains stationary at this time, the multi-functional sizing in lower part
Guiding flagpole muscle is moved down with bottom plate, exposes flagpole.As shown in Figure 10 (2)；
3, into tool-type level pressure explosive grouting device, slip casting is ignited up to horizontal single-headed flows explosive device, due to upper and lower flagpole
Interlock each other, exposed flagpole muscle forms reinforcing bar and the cooperative section of concrete after being bonded by slip casting.Such as Figure 10 (3) institute
Show.
Above-described embodiment is only the preferred embodiment of the present invention, is not construed as limiting the invention.Hydraulic device, work
The explosive grouting device of tool formula level pressure and it is multi-functional sizing guiding flagpole muscle can select according to the actual situation one or in which two
It is a or whole.In addition, the end top in multi-functional sizing guiding flagpole muscle can according to need and be selected, that is to say, that can be with
End roof construction is not used.It will be appreciated by one skilled in the art that on the basis of not departing from the volume of the principle of the invention, institute
Any amplification, the deformation done are within the scope of the invention.
Claims (11)
1. a kind of load box of two-tube reversible unidirectional grouting under pressure, including hydraulic device, it is characterised in that: in the cylinder of hydraulic device
Body two sides are arranged inlet, liquid outlet, and inlet and the liquid outlet high settings such as not, one is located at the upper end of cylinder body, another position
In the middle-end of cylinder body.
2. the load box of two-tube reversible unidirectional grouting under pressure according to claim 1, it is characterised in that: the cylinder of hydraulic device
Intracorporal piston is upper and lower non-constant section plunger body.
3. the load box of two-tube reversible unidirectional grouting under pressure according to claim 2, it is characterised in that: plunger body is by radius
Identical cylinder and trough of belt cylinder are composed, and trough of belt cylinder is located at the upper end of plunger body.
4. the load box of two-tube reversible unidirectional grouting under pressure according to claim 3, it is characterised in that: the slot of trough of belt cylinder
Section is plane, cambered surface or the conical surface.
5. the load box of two-tube reversible unidirectional grouting under pressure according to claim 2, it is characterised in that: plunger body is by radius
Two different cylinders are composed, and the small cylinder of radius is located at the upper end of plunger body.
6. the load box of two-tube reversible unidirectional grouting under pressure according to claim 1, it is characterised in that: further include tool-type
The explosive grouting device of level pressure, the explosive grouting device of tool-type level pressure include the outer slip casting vertical tube of cylinder, L shape commutation multi-function device and
Horizontally-guided device；The outer slip casting vertical tube of cylinder is two, and top is pierced by upper plate, and bottom end is close to bottom plate, L shape commutation multifunctional assembling
In the outer slip casting vertical tube of vertical component insertion cylinder set, and can be moved up and down in slip casting vertical tube outside cylinder, horizontal component with
Bottom plate is fixed and is connected to horizontally-guided device, and horizontally-guided device is connected to L shape commutation multi-function device.
7. the load box of two-tube reversible unidirectional grouting under pressure according to claim 6, it is characterised in that: the more function of L shape commutation
The shift value of plunger body when the vertical component length of energy device is greater than self-balancing static load test pile test termination condition.
8. the load box of two-tube reversible unidirectional grouting under pressure according to claim 1, it is characterised in that: further include that sizing is led
To flagpole muscle, sizing guiding flagpole muscle includes flag muscle, flagpole and bar sheath, and flag muscle is connect with flagpole, and bar sheath is installed on the tail of flagpole
Portion；Top sizing guiding flagpole muscle is through upper plate, bottom plate or sticks plate, bottom edge, and flag muscle is fixed with upper plate, and flagpole is the bottom of at
Part mounting rod sheath under plate；Sizing guiding flagpole muscle in lower part is fixed through bottom plate or patch bottom edge, flag muscle with bottom plate,
Flagpole mounting rod sheath between upper plate and bottom plate.
9. the load box of two-tube reversible unidirectional grouting under pressure according to claim 8, it is characterised in that: top sizing guiding
The flagpole length of flagpole muscle be greater than load box height and self-balancing static load test pile test termination condition when plunger body shift value it
With；The flagpole length of lower part sizing guiding flagpole muscle, which is less than load box height and is greater than self-balancing static load test pile, tests termination condition
When plunger body shift value.
10. the load box of two-tube reversible unidirectional grouting under pressure according to claim 8, it is characterised in that: bar sheath height is big
The shift value of plunger body when self-balancing static load test pile tests termination condition.
11. the load box of two-tube reversible unidirectional grouting under pressure according to claim 8, it is characterised in that: it further include end top,
End top is fixed on the tail portion of flagpole, and section is greater than the section of flagpole.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792114A (en) * | 2019-12-18 | 2020-02-14 | 江西省建筑科学研究院 | Grouting and slurry taking test mold after foundation pile self-balancing static load test |
| CN111943076A (en) * | 2020-08-18 | 2020-11-17 | 江西联保工程咨询有限公司 | Jack with synchronous self-calibration of hydraulic loading and force application as well as self-calibration structure and method thereof |
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| CN111943076B (en) * | 2020-08-18 | 2023-12-05 | 江西鸿利精密制造有限公司 | Hydraulic loading force-applying synchronous self-correcting jack and self-correcting structure and method thereof |
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