CN108331038A - A kind of simple flat board load testing method and device based on native counter-force - Google Patents
A kind of simple flat board load testing method and device based on native counter-force Download PDFInfo
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- CN108331038A CN108331038A CN201810059568.9A CN201810059568A CN108331038A CN 108331038 A CN108331038 A CN 108331038A CN 201810059568 A CN201810059568 A CN 201810059568A CN 108331038 A CN108331038 A CN 108331038A
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- crossbeam
- jack
- force
- flat board
- bearing plate
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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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of simple flat board load testing methods and device based on native counter-force comprising crossbeam, jack, bearing plate and ribbed steel；The crossbeam both ends are respectively arranged with the ribbed steel；Below the crossbeam middle position, being vertical setting with the crossbeam has the jack；The very heavy top/bottom part is arranged on the bearing plate, and the bearing plate is located on ground, is in be correspondingly arranged with the crossbeam middle position.The present invention is on the basis of minimizing load test single unit system, using the counter-force pattern that native recast around testing site is counterweight, to easily realize the operation of load test.The present invention improves test efficiency while ensureing foundation test achievement accuracy.
Description
Technical field
The present invention relates to a kind of plate method and devices, especially with regard to one kind for testing foundation bearing capacity
The simple flat board load testing method and device based on native counter-force.
Background technology
Load test is a kind of home position testing method of foundation soil, can be used for measuring the main coverage of stress under bearing plate
The bearing capacity characteristic of interior ground.Plate can be used for following purpose：1) feature of bearing capacity of foundation slab is determined
Value, the bearing capacity to evaluate foundation soil provide foundation；2) deformation modulus of foundation soil is determined；3) ground soil matrix bed counter-force is determined
Coefficient；Etc..
The device of load test includes load plate, counterforce device, device for measuring force and deformation measuring device etc..Traditional is anti-
Power apparatus includes anchoring pile and ballast, and the counterforce device broad form of shallow-layer load plate test is ballast.This counterforce device
It is operationally relatively complicated, it uses not easily, and require the landform of testing site position relatively flat, by landform control
System, is affected.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of simple flat board load testing method based on native counter-force and
Device improves test efficiency while can guarantee foundation test achievement accuracy.
To achieve the above object, the present invention takes following technical scheme：A kind of simple flat board load examination based on native counter-force
Experiment device, it is characterised in that：It includes crossbeam, jack, bearing plate and ribbed steel；The crossbeam both ends are respectively set
State ribbed steel；Below the crossbeam middle position, being vertical setting with the crossbeam has the jack；Described thousand
Jin top/bottom part is arranged on the bearing plate, and the bearing plate is located on ground, is set in corresponding with the crossbeam middle position
It sets.
Further, described device further includes pressure gauge and hand oil pump；The pressure gauge is arranged on the hand oil pump,
The hand oil pump is connect by high-pressure oil pipe with the jack.
Further, top is provided with dial gauge in the middle part of the crossbeam, and the measuring staff of the dial gauge is vertically fallen described
On bearing plate.
Further, crossbeam middle position lower part is provided with jack support plate, the jack with it is described very heavy
Topmast fagging contacts.
Further, the crossbeam between the ribbed steel by rivet interlacement together with.
Further, crossbeam domes convex under using.
Further, the end set of the ribbed steel has the basil.
A kind of simple flat board load testing method based on native counter-force, it is characterised in that include the following steps：1) it is arranged one
Include the experimental rig of ribbed steel, jack, bearing plate, crossbeam, dial gauge, pressure gauge and hand oil pump；2) experimental field
Layer excavates foundation trench, and the depth of foundation trench is to require the soil layer position of test；3) by ribbed steel out of foundation trench to the ground of foundation trench both sides
The embedded insertion of layer；4) bearing plate is placed in foundation trench bottom centre position, and jack is placed on bearing plate；Jack adds
Loading capability ranging from 0~10T, stroke 160mm；5) it is installed between the two ribbed steel ends that foundation trench is embedded in stratum
Crossbeam, crossbeam both ends rivet are connect with both ends ribbed steel, the tip contact at crossbeam center and jack；6) dial gauge is pacified
On crossbeam, and the measuring staff of dial gauge is made vertically to fall on bearing plate；7) pressure gauge is mounted on hand oil pump, and passed through
Hand oil pump is connect by high-pressure oil pipe with jack, forms loading system, the rated pressure of hand oil pump is 60MPa；8) start
Experiment：Specific experiment process is consistent with conventional load testing method.
Further, in the step 3), ribbed steel is embedded in the mode of soil layer by the way of static pressure or hammering.
Further, in the step 5), crossbeam domes convex under being, radius of curvature R=4000mm.
The invention adopts the above technical scheme, which has the following advantages：1, the present invention utilizes " soil around testing site
Weight " (including the actual weight of soil, the frictional force of soil and cohesive force) is used as counter-force, not by the influence of topography and restriction, to really
So that the application of load test spatially becomes more extensive.2, the present invention is using surrounding " soil weight " as counter-force so that conventional
Cumbersome load test device becomes succinct efficient, not only improves test efficiency, but also reduce testing expenses.3, load of the invention
Lotus tests single unit system miniaturization, can easily realize the operation of load test；Ensureing the same of foundation test achievement accuracy
When, improve test efficiency.
Description of the drawings
Fig. 1 is the overall structure diagram of apparatus of the present invention；
Fig. 2 is the vertical view of Fig. 1.
Specific implementation mode
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term "upper", "lower" "inner", "outside"
It is to be based on the orientation or positional relationship shown in the drawings to set relationship, is merely for convenience of description of the present invention and simplification of the description, rather than
Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limitation of the present invention.The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1 and Figure 2, the present invention provides a kind of simple flat board load test device based on native counter-force, which is
Utilize the counterforce device that native recast around testing site is counterweight comprising crossbeam 1, ribbed steel 2, jack 3 and bearing plate 4.
1 both ends of crossbeam are respectively arranged with ribbed steel 2；Below 1 middle position of crossbeam, being vertical setting with crossbeam 1, there have to be very heavy
Top 3.3 bottom of jack is arranged on bearing plate 4, and bearing plate 4 is located on ground, is set in corresponding with 1 middle position of crossbeam
It sets.
In above-described embodiment, the invention also includes pressure gauge 5 and hand oil pump 6, pressure gauge 5 is arranged on hand oil pump 6,
Hand oil pump 6 is connect by high-pressure oil pipe with jack 3, for providing power for jack 3.
In the various embodiments described above, 1 middle part top of crossbeam is provided with dial gauge 7, and the measuring staff of dial gauge 7 is vertically fallen
On bearing plate 4.
In the various embodiments described above, 1 middle position lower part of crossbeam is provided with jack support plate jack support plate 8, and thousand
Jin top 3 is contacted with jack support plate 8.
In the various embodiments described above, linked together by rivet 9 between crossbeam 1 and ribbed steel 2.
In the various embodiments described above, the domes convex under using of crossbeam 1, radius of curvature R is preferably 4000mm.
In the various embodiments described above, the end set of ribbed steel 2 has the basil, ribbed steel 2 to be preferably dimensioned to be 1000mm*
500mm, thickness are preferably 50mm, and the basil is preferably 15 degree.
As shown in Figure 1 and Figure 2, the present invention also provides a kind of simple flat board load testing method based on native counter-force, this method
Foundation bearing capacity mechanics related to deformation etc. in certain depth, testing certain soil layer B with load test at the A of ground is joined
Number.The present invention includes the following steps：
1) foundation trench 11 is excavated on experiment stratum 10, the depth of foundation trench 11 is to require the soil layer position of test.
2) the 10 embedded insertion of stratum by ribbed steel 2 out of foundation trench 11 to 11 both sides of foundation trench；
Wherein, the size of ribbed steel 2 is 1000mm*500mm, and 50mm can be selected in thickness, and the basil is 15 degree；
Ribbed steel 2 is embedded in the optional static pressure of mode of soil layer 1 or the mode of hammering.
3) bearing plate 4 is placed in 11 bottom centre position of foundation trench, and jack 3 is placed on bearing plate 4.
Wherein, a diameter of 300mm of bearing plate 4, the load capability ranging from 0~10T, stroke 160mm of jack 3.
4) installation crossbeam 1,1 both ends riveting of crossbeam between two ribbed steels, 2 end in stratum 10 are embedded in foundation trench 11
Nail 9 is connect with both ends ribbed steel 2, can keep whole rigidity.The tip contact at crossbeam 1 center and jack 3.
The domes convex under being of crossbeam 1, radius of curvature R=4000mm.
5) dial gauge 7 is mounted on crossbeam 1, and the measuring staff of dial gauge 7 is made vertically to fall on bearing plate 4.
6) pressure gauge 5 is mounted on hand oil pump 6, and is connect hand oil pump 6 with jack 3 by high-pressure oil pipe,
Form loading system；The rated pressure of hand oil pump 6 is 60MPa.
7) start to test：Specific experiment process is consistent with conventional load testing method.
In conclusion in the use of the present invention, " dead weight " using soil provides counter-force, therefore testing site is with the thickness of soil loading
It is very big on foundation detection influence can be carried out with method completion load test, it generally can be according to formula fak<100h is carried out just
Sentence (wherein fak is the characteristic value of foundation bearing capacity estimated, and h is ballast soil thickness), if above formula is set up, can with the method into
Row experiment.
The test method of the present invention is suitable for the foundation soils such as cohesive soil, silt, is generally unsuitable for the ground such as sand, gravelly soil
Base soil.Influence in view of the rigidity and soil disturbance of ribbed steel 2 and crossbeam 1 to test result, the method for the present invention are suitable for
Examine the general foundation soil of characteristic load bearing capacity, fak<180kPa is advisable.
The various embodiments described above are merely to illustrate the present invention, and structure and size, installation position and the shape of each component are all can be with
It is varied from, based on the technical solution of the present invention, all improvement that individual part is carried out according to the principle of the invention and waits
With transformation, should not exclude except protection scope of the present invention.
Claims (10)
1. a kind of simple flat board load test device based on native counter-force, it is characterised in that：It includes crossbeam, jack, pressure-bearing
Plate and ribbed steel；The crossbeam both ends are respectively arranged with the ribbed steel；Below the crossbeam middle position, with
The crossbeam, which is vertical setting, the jack；The very heavy top/bottom part is arranged on the bearing plate, the bearing plate position
In on ground, with the crossbeam middle position in being correspondingly arranged.
2. a kind of simple flat board load test device based on native counter-force as described in claim 1, it is characterised in that：The dress
Set further includes pressure gauge and hand oil pump；The pressure gauge is arranged on the hand oil pump, and the hand oil pump passes through high pressure
Oil pipe is connect with the jack.
3. a kind of simple flat board load test device based on native counter-force as described in claim 1, it is characterised in that：Positioned at institute
It states top in the middle part of crossbeam and is provided with dial gauge, the measuring staff of the dial gauge is vertically fallen on the bearing plate.
4. a kind of simple flat board load test device based on native counter-force as described in claim 1, it is characterised in that：The cross
Beam middle position lower part is provided with jack support plate, and the jack is contacted with the jack support plate.
5. a kind of simple flat board load test device based on native counter-force as described in claim 1, it is characterised in that：The cross
Beam between the ribbed steel by rivet interlacement together with.
6. a kind of simple flat board load test device based on native counter-force as described in claim 1, it is characterised in that：The cross
Beam domes convex under using.
7. a kind of simple flat board load test device based on native counter-force as described in claim 1, it is characterised in that：The band
The end set of rib steel plate has the basil.
8. a kind of simple flat board load testing method based on native counter-force, it is characterised in that include the following steps：
1) setting one includes the experiment dress of ribbed steel, jack, bearing plate, crossbeam, dial gauge, pressure gauge and hand oil pump
It sets；
2) foundation trench is excavated on experiment stratum, the depth of foundation trench is to require the soil layer position of test；
3) by ribbed steel out of foundation trench to the embedded insertion in the stratum of foundation trench both sides；
4) bearing plate is placed in foundation trench bottom centre position, and jack is placed on bearing plate；The load capability model of jack
It encloses for 0~10T, stroke 160mm；
5) crossbeam is installed between the two ribbed steel ends that foundation trench is embedded in stratum, crossbeam both ends rivet and both ends are with ribbing
Steel plate connects, the tip contact at crossbeam center and jack；
6) dial gauge is mounted on crossbeam, and the measuring staff of dial gauge is made vertically to fall on bearing plate；
7) pressure gauge is mounted on hand oil pump, and is connect hand oil pump with jack by high-pressure oil pipe, form load
The rated pressure of system, hand oil pump is 60MPa；
8) start to test：Specific experiment process is consistent with conventional load testing method.
9. a kind of simple flat board load testing method based on native counter-force as claimed in claim 8, it is characterised in that：The step
It is rapid 3) in, ribbed steel be embedded in soil layer mode by the way of static pressure or hammering.
10. a kind of simple flat board load testing method based on native counter-force as claimed in claim 8, it is characterised in that：It is described
In step 5), crossbeam domes convex under being, radius of curvature R=4000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810059568.9A CN108331038B (en) | 2018-01-22 | 2018-01-22 | Simple flat plate load test method and device based on soil counter force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810059568.9A CN108331038B (en) | 2018-01-22 | 2018-01-22 | Simple flat plate load test method and device based on soil counter force |
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| Publication Number | Publication Date |
|---|---|
| CN108331038A true CN108331038A (en) | 2018-07-27 |
| CN108331038B CN108331038B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810059568.9A Active CN108331038B (en) | 2018-01-22 | 2018-01-22 | Simple flat plate load test method and device based on soil counter force |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359887A (en) * | 2020-11-19 | 2021-02-12 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | Shallow foundation bearing capacity test device and method based on large equipment |
| CN113029754A (en) * | 2021-03-23 | 2021-06-25 | 新疆维吾尔自治区煤田地质局一六一队新能开发总公司机修厂 | Voltage-stabilizing loading device |
| CN113029754B (en) * | 2021-03-23 | 2024-06-07 | 新疆维吾尔自治区煤田地质局一六一队新能开发总公司机修厂 | Voltage-stabilizing loading device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2119443U (en) * | 1992-03-12 | 1992-10-21 | 刘小清 | Liquid weight counterbalance type static load tester |
| CN101487273A (en) * | 2009-02-26 | 2009-07-22 | 建研地基基础工程有限责任公司 | Method and equipment for determining bearing capacity of existing building foundation |
| CN203821362U (en) * | 2014-05-06 | 2014-09-10 | 贵州中建建筑科研设计院有限公司 | Testing device suitable for deep bearing-stratum bearing capacity |
| CN104074209A (en) * | 2014-07-10 | 2014-10-01 | 安徽省金田建筑设计咨询有限责任公司 | Deep plate loading test device |
| CN107460862A (en) * | 2017-09-22 | 2017-12-12 | 中国路桥工程有限责任公司 | A kind of base bearing capacity and frictional resistance joint test device |
| CN208009500U (en) * | 2018-01-22 | 2018-10-26 | 国家电网公司 | A kind of simple flat board load test device based on native counter-force |
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2018
- 2018-01-22 CN CN201810059568.9A patent/CN108331038B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2119443U (en) * | 1992-03-12 | 1992-10-21 | 刘小清 | Liquid weight counterbalance type static load tester |
| CN101487273A (en) * | 2009-02-26 | 2009-07-22 | 建研地基基础工程有限责任公司 | Method and equipment for determining bearing capacity of existing building foundation |
| CN203821362U (en) * | 2014-05-06 | 2014-09-10 | 贵州中建建筑科研设计院有限公司 | Testing device suitable for deep bearing-stratum bearing capacity |
| CN104074209A (en) * | 2014-07-10 | 2014-10-01 | 安徽省金田建筑设计咨询有限责任公司 | Deep plate loading test device |
| CN107460862A (en) * | 2017-09-22 | 2017-12-12 | 中国路桥工程有限责任公司 | A kind of base bearing capacity and frictional resistance joint test device |
| CN208009500U (en) * | 2018-01-22 | 2018-10-26 | 国家电网公司 | A kind of simple flat board load test device based on native counter-force |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359887A (en) * | 2020-11-19 | 2021-02-12 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | Shallow foundation bearing capacity test device and method based on large equipment |
| CN113029754A (en) * | 2021-03-23 | 2021-06-25 | 新疆维吾尔自治区煤田地质局一六一队新能开发总公司机修厂 | Voltage-stabilizing loading device |
| CN113029754B (en) * | 2021-03-23 | 2024-06-07 | 新疆维吾尔自治区煤田地质局一六一队新能开发总公司机修厂 | Voltage-stabilizing loading device |
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| Publication number | Publication date |
|---|---|
| CN108331038B (en) | 2023-10-13 |
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