CN109183863A - A kind of device and method of the interior static horizontal loading test for surveying the soil body of foundation pile - Google Patents
A kind of device and method of the interior static horizontal loading test for surveying the soil body of foundation pile Download PDFInfo
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- CN109183863A CN109183863A CN201811227099.3A CN201811227099A CN109183863A CN 109183863 A CN109183863 A CN 109183863A CN 201811227099 A CN201811227099 A CN 201811227099A CN 109183863 A CN109183863 A CN 109183863A
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- 239000002689 soil Substances 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000003068 static effect Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
- 239000010959 steel Substances 0.000 claims abstract description 79
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention provides a kind of device of interior static horizontal loading test for surveying the soil body of foundation pile, the foundation pile of window and the load box being installed on inside foundation pile are offered including side wall, load box includes interior steel plate, interior Interal fixation is inside foundation pile, outer steel plate is set to the outside of interior steel plate in parallel, and outer steel plate is arranged in the outer wall flush of the window of foundation pile, its outer wall and foundation pile；Inner panel and outer panels are respectively arranged on the opposite face of interior steel plate and outer steel plate, and several hydraulic jacks are connected between inner panel and outer panels, drive outer steel plate to move back and forth in the horizontal direction when hydraulic jack loads；Laser range finder and reflective mirror are respectively fixedly disposed at the same position of interior steel plate Yu outer steel plate opposite face, and the data acquisition device of laser range finder is installed on ground；Oil inlet pipe, flowline are welded between load box top, the loading device being connected in hydraulic jack and ground.The present invention has the characteristics that detection method is easy, process is simple, the test period is short.
Description
Technical field
The invention belongs to technical field of analysis and detection, be related to surveying in a kind of foundation pile the device of the static horizontal loading test of the soil body and
Method.
Background technique
As nation-building cause is fast-developing, the trend of modern architecture to Development of High-rise Buildings is more obvious, therefore just
There is many deep basal pits even ultra-deep foundation pit, therefore the supporting construction of stake is widely used, support pile (also referred to as foundation pile)
Horizontal bearing capacity detection becomes an important link of the safety of foundation pit.Meanwhile the horizontal displacement of support pile can also pass through
The static horizontal loading test of the soil body is calculated, therefore survey calculation goes out horizontal bearing of the static horizontal loading test to support pile of the soil body
Power checking computations play the role of very big with horizontal displacement checking computations.Traditional static horizontal loading test is by measuring static horizontal loading test
Then proportionality coefficient finds out static horizontal loading test, including " m " method, C method, K with different methods under different assumed condition
Method and constant method, wherein with being most widely exactly " m " method.
At present in engineering, to the value of Coefficient m mainly by means of empirical equation, look into specification sheet and the horizontal static load of single pile is tried
It tests.Only confrontation force coefficient according to a preliminary estimate, can not react Practical Project soil body situation to empirical equation completely with specification sheet is looked into,
And single pile horizontally loading test needs to excavate the soil body, sets up reaction frame, complex procedures, the test period is long.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of device for the static horizontal loading test that the soil body is surveyed in foundation pile and sides
Method has the characteristics that detection method is easy, process is simple, the test period is short.
In order to solve the above technical problem, the present invention provides in a kind of foundation pile survey the soil body static horizontal loading test device,
Including side wall offer window foundation pile and the load box being installed on inside foundation pile, the load box include interior steel plate, inner panel,
Hydraulic jack, outer panels, outer steel plate, laser range finder, reflecting mirror, oil inlet pipe, flowline；The interior Interal fixation is in foundation pile
Inside, the outer steel plate are set to the outside of the interior steel plate in parallel, and the outer steel plate is arranged in the window of the foundation pile, its outer wall
With the outer wall flush of the foundation pile；The inner panel and outer panels are respectively arranged on the opposite face of the interior steel plate and outer steel plate,
Several hydraulic jacks being arranged in array are connected between the inner panel and outer panels, the hydraulic jack load
When the outer steel plate can be driven to move back and forth in the horizontal direction；For measuring the laser of the outer steel plate translation distance
Rangefinder and the reflective mirror are respectively fixedly disposed at the same position of the interior steel plate Yu the outer steel plate opposite face, described to swash
The data acquisition device of optar is installed on ground；The oil inlet pipe, flowline be welded at the top of load box, it is described to be connected to
Between loading device in hydraulic jack and ground.
It is preferred that the foundation pile is cylindrical body, the outer wall of the outer steel plate is and the foundation pile outer wall radian phase
Same arcwall face.
It is preferred that the foundation pile is square body, the outer wall of the outer steel plate is plane.
It is preferred that, it is characterised in that: spacing is equipped with several load boxes along longitudinal direction inside the foundation pile.
It is preferred that the top of the load box is equipped with several universal holes.
It is preferred that the data line of the laser range finder and the data acquisition device is arranged in described lead to
With in hole.
The present invention provides a kind of method of static horizontal loading test for detecting the soil body, comprising the following steps:
The foundation pile for being equipped with load box is embedded in the soil body to be measured by step 1, makes the height of load box Yu soil layer to be measured
It is identical；
The hydraulic jack of step 2, load box is loaded according to the horizontal addload stress F of setting, hydraulic jack top
Outer panels and the outside Level Promoting soil body of outer steel plate；
Step 3, laser range finder transmitting laser is to reflective mirror, the receiver through mirror reflection to laser range finder, and
The displacement data that outer steel plate is pushed outwardly is transferred to data acquisition device, records displacement data y；
The hydraulic jack of step 4, load box restores ortho states；
The static horizontal loading test K of the soil body is calculated by following formula in step 5h:
The A is the area that the outer steel plate of load box is contacted with the soil body.
It is preferred that repeating step 1 to step 3, the displacement number that the outer steel plate of multiple groups is pushed outwardly is collected and recorded
According to the average value y of displacement data is calculated.
The present invention relates to a kind of device and methods for the static horizontal loading test that the soil body is surveyed in foundation pile, compared with existing design,
The advantage is that: firstly, the present invention measure the soil body static horizontal loading test by the soil body apply horizontal force and generate displacement, note
It records and is calculated, method is simple and fast.Furthermore the present invention measures the device of soil body horizontal resistance coefficient, in plant produced,
Load box is mounted on inside foundation pile, the globality of product is improved, meanwhile, transport is mounted directly test to scene, greatly simplifies
The step of test, meanwhile, save the material resources and human cost of test.In addition, laser range finder is installed on load box, position
The measurement of shifting can quickly be measured by laser range finder, further simplify test procedure.
It is possible to further which load box is mounted on the difference of foundation pile deeply according to soil layer to be measured and geology soil layer information
Degree, can also install multiple load boxes simultaneously and measure, greatly easy test process, easy to operate.
Further, the outer steel plate of load box is cambered surface or plane, and outer steel plate passes through the window of foundation pile, the outside with foundation pile
Face aligns, and load box is made to fit in pile body well, and stake is more uniform with earth stress, ensure that the globality of load box,
Significantly simplify load box installation procedure at the scene；Meanwhile but also transport is more convenient to improve safety.
Further, the pipelines such as oil inlet pipe, flowline, universal hole are arranged at the top and bottom of load box, are conducive to load
The globality of the outer steel plate of case, so that uniform force when load box loads, increases the horizontal shear ability of load box.
Detailed description of the invention
Fig. 1 is the vertical section schematic diagram that the device of soil body horizontal resistance coefficient is surveyed in foundation pile of the present invention.
Fig. 2 is the schematic cross section of the embodiment of the present invention 1.
Fig. 3 is the use state diagram of the embodiment of the present invention 3.
Fig. 4 is the vertical section schematic diagram of the embodiment of the present invention 1.
Fig. 5 is the side schematic view of the embodiment of the present invention 1.
Fig. 6 is the schematic cross section of the embodiment of the present invention 2.
Specific embodiment
The technical solution in the present invention is described in detail in 1-6 with reference to the accompanying drawing: the present invention defines the outer of load box
Steel plate release direction be it is outer, recycle direction be interior.
Embodiment 1
This specific embodiment combines Fig. 1-5 pairs to be installed in cylindric foundation pile and is used to measure soil body horizontal resistance coefficient
Load box is described in detail.
A kind of foundation pile is interior to survey soil body horizontal resistance coefficient KhDevice, foundation pile 200 and the edge of window are offered including side wall
Longitudinal pitch is mounted at least one load box 100 inside foundation pile 200.The load box 100 includes by horizontally disposed top
Face and bottom surface, longitudinal parallel interior steel plate being set between top surface and bottom surface and outer steel plate, two parallel side plates are constituted
Cabinet, including interior steel plate 1, inner panel 2, hydraulic jack 3, outer panels 4, outer steel plate 5, laser range finder 6, reflecting mirror 7, into
Oil pipe 8, flowline 9, universal hole 10.
The inside of interior steel plate 1 is welded on the steel reinforcement cage (not regarding out in figure) of foundation pile 200, must in interior 1 welding process of steel plate
It must guarantee smooth；Outer 5 parallel interval of steel plate is set to the outside of the interior steel plate 1, and outer steel plate 5 is made to be arranged in the foundation pile 200
The outer wall flush of window, its outer wall and the foundation pile 200；Inner panel 2 and outer panels 4 are respectively welded in interior steel plate 1 and outer steel
On the opposite face of plate 5, four hydraulic jacks 3 being arranged in array by ring flange 11 be connected in the inner panel 2 with
Between outer panels 4, when hydraulic jack 3 loads, the hydraulic jack 3 can drive the outer steel plate 5 to carry out in the horizontal direction
It moves back and forth.Outer steel plate and interior steel plate area size need to be greater than the outer panels of load box and the area size of inner panel, it is ensured that
Steel plate uniform force when load box loads, and increase its shear resistance.The outer wall of the outer steel plate 5 is the arc of convex, is made
It can be bonded with the pile body of foundation pile, be conducive to the globality of foundation pile, while significantly simplify load box in-site installation program.
The same position in interior steel plate 1 and the opposite face of outer steel plate 5, laser is respectively welded in laser range finder 6 and reflective mirror 7
After rangefinder 6 emits laser to reflecting mirror 7, laser is reflected back toward the receiver of laser range finder 6, measures range data, laser
Measured data are transmitted or be wirelessly transmitted to outside the soil body by data line by rangefinder 6 is transmitted to data acquisition device B, i.e.,
Displacement information can be obtained in the process of load.Laser range finder and reflective mirror use market now to sell product.
Oil inlet pipe 8, flowline 9 pass through and are welded on 100 top of load box, and pass through top and internal hydraulic pressure jack 3
Loading device C be connected, oil inlet pipe 8 concatenates each hydraulic jack 3 with flowline 9, and oil pipe is directly bound outside the steel reinforcement cage of stake
Until top, connect with hydraulic loading device.Universal hole 10 is through the through-hole of the top and bottom of load box 100, four or
The universal hole 10 of the above quantity is distributed top, the bottom for being set to load box, and universal hole 10 can be used as sound detecting pipe, injected hole, anti-
Slurry hole wears laser range finder data line etc. and uses.Oil inlet pipe 8, flowline 9, universal hole 10 be arranged in load box top or
Bottom rather than on interior steel plate and outer steel plate, avoid in welding or Tapping procedures to the interior steel plate of load box and outer steel plate side wall
Caused by deformation and damage, ensure that the globality of interior steel plate and outer steel plate so that load box load when uniform force, increase lotus
Carry the horizontal shear ability of case.
Embodiment 2
This specific embodiment 2 is substantially the same manner as Example 1, except that the outer wall of the outer steel plate of load box is plate
Shape, for catering to the foundation pile of cubic, as shown in Figure 6.
Embodiment 3
The present invention carries out surveying soil body horizontal resistance coefficient K in foundation pile using device in embodiment 1 or 2hMethod, including with
Lower step:
The foundation pile for being equipped with load box is embedded in the soil body to be measured by step 1, makes the height of load box Yu soil layer to be measured
It is identical；
The hydraulic jack of step 2, load box is loaded according to the horizontal addload stress F of setting, hydraulic jack top
Outer panels and the outside Level Promoting soil body of outer steel plate；
Step 3, laser range finder transmitting laser is to reflective mirror, the receiver through mirror reflection to laser range finder, and
The displacement data that outer steel plate is pushed outwardly is transferred to data acquisition device, records displacement data；Step 1 is repeated to step 3,
The displacement data that the outer steel plate of multiple groups is pushed outwardly is collected and recorded, the average value y of displacement data is calculated；
The hydraulic jack of step 4, load box restores ortho states；
The static horizontal loading test K of the soil body is calculated by following formula in step 5h:
The A is the area that the outer steel plate of load box is contacted with the soil body.
Claims (8)
1. surveying the device of the static horizontal loading test of the soil body in a kind of foundation pile, it is characterised in that: offer the base of window including side wall
Stake (200) and the load box (100) for being installed on foundation pile (200) inside, the load box (100) includes interior steel plate (1), inner panel
(2), hydraulic jack (3), outer panels (4), outer steel plate (5), laser range finder (6), reflecting mirror (7), oil inlet pipe (8), fuel-displaced
It manages (9)；The interior steel plate (1) is fixed on foundation pile (200) inside, and the outer steel plate (5) is in parallel set on the outer of the interior steel plate (1)
Side, the outer steel plate (5) are arranged in the outer wall flush of the window of the foundation pile (200), its outer wall and the foundation pile (200)；
The inner panel (2) and outer panels (4) are respectively arranged on the opposite face of the interior steel plate (1) and outer steel plate (5), several to arrange in array
The hydraulic jack (3) of cloth is connected between the inner panel (2) and outer panels (4), hydraulic jack (3) load
When the outer steel plate (5) can be driven to move back and forth in the horizontal direction；For measuring the institute of outer steel plate (5) translation distance
It states laser range finder (6) and the reflective mirror (7) and is respectively fixedly disposed at the interior steel plate (1) and the outer steel plate (5) relatively
The data acquisition device (B) of the same position in face, the laser range finder (6) is installed on ground；It is the oil inlet pipe (8), fuel-displaced
Pipe (9) is welded between load box (100) top, the loading device (C) being connected on the hydraulic jack (5) and ground.
2. surveying the device of the static horizontal loading test of the soil body in a kind of foundation pile according to claim 1, it is characterised in that: described
Foundation pile (200) is cylindrical body, and the outer wall of the outer steel plate (5) is arcwall face identical with the foundation pile (200) outer wall radian.
3. surveying the device of the static horizontal loading test of the soil body in a kind of foundation pile according to claim 1, it is characterised in that: described
Foundation pile (200) is square body, and the outer wall of the outer steel plate (5) is plane.
4. surveying the device of the static horizontal loading test of the soil body in a kind of foundation pile according to claim 1 to 3, it is characterised in that: institute
It states the internal spacing along longitudinal direction of foundation pile (200) and is equipped with several load boxes (100).
5. the device of the static horizontal loading test of the soil body is surveyed in a kind of foundation pile according to any one of claim 1-3, it is special
Sign is: the top of the load box (100) is equipped with several universal holes (10).
6. surveying the device of the static horizontal loading test of the soil body in a kind of foundation pile according to claim 5, it is characterised in that: described
The data line of laser range finder (6) and the data acquisition device (B) are arranged in the universal hole (10).
7. a kind of method of the static horizontal loading test using the device detection soil body described in claim 1, which is characterized in that including
Following steps:
The foundation pile for being equipped with load box is embedded in the soil body to be measured by step 1, keeps load box identical as the height of soil layer to be measured；
The hydraulic jack of step 2, load box is loaded according to the horizontal addload stress F of setting, and hydraulic jack heads on outer
Panel and the outside Level Promoting soil body of outer steel plate；
Step 3, laser range finder transmitting laser is to reflective mirror, the receiver through mirror reflection to laser range finder, and will be outer
The displacement data that steel plate is pushed outwardly is transferred to data acquisition device, records displacement data y；
The hydraulic jack of step 4, load box restores ortho states；
The static horizontal loading test K of the soil body is calculated by following formula in step 5h:
The A is the area that the outer steel plate of load box is contacted with the soil body.
8. the method for the static horizontal loading test of the detection soil body according to claim 7, which is characterized in that including following step
It is rapid: to repeat step 1 to step 3, collect and record the displacement data that the outer steel plate of multiple groups is pushed outwardly, displacement data is calculated
Average value y.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227099.3A CN109183863A (en) | 2018-10-22 | 2018-10-22 | A kind of device and method of the interior static horizontal loading test for surveying the soil body of foundation pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227099.3A CN109183863A (en) | 2018-10-22 | 2018-10-22 | A kind of device and method of the interior static horizontal loading test for surveying the soil body of foundation pile |
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| Publication Number | Publication Date |
|---|---|
| CN109183863A true CN109183863A (en) | 2019-01-11 |
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| CN201811227099.3A Pending CN109183863A (en) | 2018-10-22 | 2018-10-22 | A kind of device and method of the interior static horizontal loading test for surveying the soil body of foundation pile |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060021446A1 (en) * | 2004-07-30 | 2006-02-02 | England Melvin G | Method and apparatus for automatic load testing using bi-directional testing |
| CN1831511A (en) * | 2006-04-06 | 2006-09-13 | 上海市隧道工程轨道交通设计研究院 | Deep horizontal load testing method |
| CN104895037A (en) * | 2015-06-10 | 2015-09-09 | 中国地质大学（武汉） | Deep stratum horizontal resistance coefficient in-situ tester |
| CN209227634U (en) * | 2018-10-22 | 2019-08-09 | 深圳市路桥建设集团有限公司 | A kind of device of the interior static horizontal loading test for surveying the soil body of foundation pile |
-
2018
- 2018-10-22 CN CN201811227099.3A patent/CN109183863A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060021446A1 (en) * | 2004-07-30 | 2006-02-02 | England Melvin G | Method and apparatus for automatic load testing using bi-directional testing |
| CN1831511A (en) * | 2006-04-06 | 2006-09-13 | 上海市隧道工程轨道交通设计研究院 | Deep horizontal load testing method |
| CN104895037A (en) * | 2015-06-10 | 2015-09-09 | 中国地质大学（武汉） | Deep stratum horizontal resistance coefficient in-situ tester |
| CN209227634U (en) * | 2018-10-22 | 2019-08-09 | 深圳市路桥建设集团有限公司 | A kind of device of the interior static horizontal loading test for surveying the soil body of foundation pile |
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Application publication date: 20190111 |
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