CN205839819U - A kind of loading connecting structure for spread foundation full scale test - Google Patents
A kind of loading connecting structure for spread foundation full scale test Download PDFInfo
- Publication number
- CN205839819U CN205839819U CN201620550455.5U CN201620550455U CN205839819U CN 205839819 U CN205839819 U CN 205839819U CN 201620550455 U CN201620550455 U CN 201620550455U CN 205839819 U CN205839819 U CN 205839819U
- Authority
- CN
- China
- Prior art keywords
- column
- full scale
- spread foundation
- scale test
- short column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000003068 static effect Effects 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 241000826860 Trapezium Species 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 241000283690 Bos taurus Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of loading connecting structure for spread foundation full scale test, including charger, charger is hydraulic static pressing machine, charger jaw accompanies power transmission concrete-pile, it is provided with short column below power transmission concrete-pile, short column side is fixed with bracket column, described bracket column be shaped as right-angled trapezium, wherein, the side with short column of going to the bottom of bracket column is connected, the right angle waist of bracket column and the upper surface of short column are positioned in same level, described short column, all connect above bracket column and have built-in fitting, described built-in fitting is provided with pressure transducer, described pressure transducer external piezometry instrument.This utility model adds bracket column in short column side so that charger is possible not only to that spread foundation is implemented axle center and loads, it is also possible to implement bias-load；Use hydraulic static pile pressing machine to replace reaction frame jack system, be effectively improved the conventional efficient for aspect ratio spread foundation full scale test, provide cost savings and decrease the time.
Description
Technical field
This utility model relates to a kind of system for spread foundation full scale test, is specifically related to a kind of for spread foundation
The loading connecting structure of full scale test.
Background technology
At present, spread foundation is one of principal mode of electric power line steel tower.During UHV transmission line is built, foundation cost
Accounting for the 16% ~ 20% of overall investment, therefore the optimization design on basis plays an important role with cost for saving the duration.
Reduce the cutting depth of foundation soil, i.e. reduce the height of footing step, can be significantly for economic angle
Reduce cost, and can accelerate the duration.But, spread foundation strictly observes in existing national sector standard width height ratio of steps not
Requirement more than 2.5, so reducing the height of footing step, the width height ratio of steps of spread foundation will exceed specification limit.And
And using spread foundation when, owing to downforce is increasing, and part geological condition foundation bearing capacity is low, the end, basis
Plate area generally requires increase.It practice, the limit value that spread foundation the ratio of width to height is less than 2.5 is truncate based on foundation bottom stress
The demand that EDS maps supposes is set out, and breaks through the requirement limited spread foundation width height ratio of steps at present, needs spread foundation
Sub-grade reaction distribution situation research experiment, preferably to recognize mechanical characteristic and the sub-grade reaction distribution rule on basis.
For spread foundation, outdoor full scale test more can reflect its true mechanical characteristic objectively, but, tradition
The loading connecting structure of spread foundation full scale test make charger can only realize that spread foundation is applied axle center to load, nothing
Spread foundation is implemented bias-load by method, causes full scale test and practical situation to have deviation, reduces test accuracy.
Utility model content
Technical problem to be solved in the utility model loads connecting structure for conventional Extension basis full scale test
Defect, it is provided that a kind of loading connecting structure for spread foundation full scale test, solving charger can only execute spread foundation
Add axle center and load the problem that the full scale test precision caused is low.
This utility model is achieved through the following technical solutions: a kind of loading for spread foundation full scale test connects structure
Making, including charger, described charger jaw accompanies power transmission concrete-pile, is provided with short below described power transmission concrete-pile
Post, it is characterised in that described short column side is fixed with bracket column；The cross section of described bracket column is right-angled trapezium, wherein, bracket
The side with short column of going to the bottom of post is connected, and the right angle waist of bracket column and the upper surface of short column are positioned in same level.Existing skill
In art, in order to detect mechanical characteristic and the sub-grade reaction distribution rule of spread foundation objectively, the most all use full scale test, pass
The spread foundation full scale test of system uses reaction frame and jack system to load short column as loading equipemtn, and by short
Load is applied in spread foundation by post, by the base bottom the strain-Sensing device being arranged in spread foundation and spread foundation
The mechanical characteristic of spread foundation is analyzed by end counter-force measurement apparatus with sub-grade reaction distribution rule, but, traditional extension
Basis full scale test only considered and applies axle center loading by charger to spread foundation, and have ignored the important of bias-load
Property.This utility model is by arranging bracket column in power transmission short column side so that charger both can apply axle to spread foundation
The heart loads can apply again bias-load, substantially increases test accuracy so that the analysis result of full scale test and practical situation
More press close to.
Further, described charger is hydraulic static pressing machine.In order to break through conventional Extension footing step the ratio of width to height
Being the limit value of 2.5, this utility model is required for the width height ratio of steps spread foundation more than 2.5 and carries out full scale test.Step width
The spread foundation more than 2.5 of the high ratio is shorter than general spread foundation, floor space big, during so carrying out full scale test, and tradition full size
Test use jack reaction frame system need large-area jack reaction frame system of building, not only wave as charger
Time-consuming, and increase experimentation cost, make the efficiency of full scale test reduce.In order to solve the problems referred to above, this device uses liquid
Pressure static pile press is as charger, and the axial pressure or the eccentricity pressure that act on concrete foundation top in Practical Project can
Simulating with the vertical static pressure produced with hydraulic static pile pressing machine, hydraulic static pile pressing machine relatively reaction frame has and has movement side
Just, low cost, construction time noiselessness, friction, free of contamination advantage, the time not only shortening full scale test also a saving examination
Test cost.It addition, by the jaw of movable hydraulic static pile press, can easily load or bias-load by conversion axes.
Further, described bracket column be shaped as right-angled trapezium, wherein, bracket column go to the bottom side with short column even
Connecing, the right angle waist of bracket column and the upper surface of short column are positioned in same level.Bracket column uses the setting of right-angled trapezium not only
Save the use of arrangement of reinforcement in concrete, and improve bracket column and can bear the intensity of load.
Further, all connect above described short column, bracket column and have built-in fitting.By arranging built-in fitting, can conveniently grasp
Make personnel in operation from now on, in built-in fitting, add other devices or component.
Further, described built-in fitting is positioned on the axis of short column, bracket column.Built-in fitting is separately positioned on short column and cattle
On the axis of lower limb post so that be applied to the load on built-in fitting during loading and can be transferred uniformly on short column or bracket column.
Further, described built-in fitting is provided with pressure transducer, described pressure transducer external piezometry instrument.
Pressure transducer is set, the size of every grade of load can be surveyed by external piezometry instrument, it is simple in loading procedure
Controlled loading speed makes load stable.
Further, it is provided with wedge between described built-in fitting and pressure transducer.At built-in fitting and pressure transducer
Gap with wedge fill, level can fix pressure transducer, so it does not in loading procedure produce displacement.
Further, it is provided with groove at described power transmission concrete-pile bottom centre.Set bottom described power transmission concrete-pile
Put groove, and groove size be close with pressure sensor dimensions, it is therefore an objective to a groove at the bottom of making blocks pressure transducer completely, it is achieved
Centering, to guarantee that both contact well, more directly transmits load, and power transmission concrete-pile is sandwiched in the folder of hydraulic static pile pressing machine
In stake jaw, the most movably, power transmission concrete-pile bottom groove is made to align with the pressure transducer being placed in built-in fitting, from
And spread foundation is reliably loaded.
This utility model compared with prior art, has such advantages as and beneficial effect:
1, this utility model uses hydraulic static pile pressing machine to instead of reaction frame and jack system, is effectively improved pin
Conventional efficient to aspect ratio concrete spread foundation full scale test, provides cost savings and decreases the time；
2, this utility model adds bracket column in short column side so that charger is possible not only to implement spread foundation
Axle center loads, it is also possible to implement bias-load；
3, this utility model is provided with wedge between built-in fitting and pressure transducer so that pressure transducer is fixed on
In built-in fitting, improve loading ground accuracy, when decreasing loading, power transmission concrete-pile bottom groove alignment short column upward pressure passes
The time of sensor.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by this utility model embodiment, constitutes the one of the application
Part, is not intended that the restriction to this utility model embodiment.In the accompanying drawings:
Fig. 1 is this utility model structural representation.
The parts title of labelling and correspondence in accompanying drawing:
1-power transmission concrete-pile, 2-hydraulic static pressing machine, 3-pressure transducer, 4-short column, 5-built-in fitting, 6-bracket
Post, 7-arrangement of reinforcement.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and explanation thereof are only used for explaining this
Utility model, is not intended as restriction of the present utility model.
Embodiment
As it is shown in figure 1, this utility model is a kind of loading connecting structure for spread foundation full scale test, including loading
Device, described charger jaw accompanies power transmission concrete-pile 1, is provided with short column 4 below described power transmission concrete-pile 1, described
Short column 4 side is fixed with bracket column 6.Further, described charger is hydraulic static pressing machine 2.Further, described cattle
Lower limb post 6 be shaped as right-angled trapezium, wherein, the side with short column 4 of going to the bottom of bracket column 6 is connected, and the right angle waist of bracket column 6 is with short
The upper surface of post 4 is positioned in same level.Further, all connect above described short column 4, bracket column 6 and have built-in fitting 5.Enter
One step ground, described built-in fitting 5 is positioned on the axis of short column 4, bracket column 6.Further, described built-in fitting 5 is provided with pressure
Force transducer 3, described pressure transducer 3 external piezometry instrument.Further, described built-in fitting 5 and pressure transducer 3 it
Between be provided with wedge.Further, it is provided with groove at described power transmission concrete-pile 1 bottom centre.When using this device, first
After first treating that spread foundation, short column 4 and bracket column 6 all pour, hydraulic static pile pressing machine 2 admission, treat that it travels to short column 4
Or after built-in fitting 5 scope of bracket column 6, stop and the position of fixed hydraulic static pile press 2, afterwards at short column 4 or bracket column 6
Built-in fitting 5 on placement force sensor 3, and fill with wedge in the gap of built-in fitting 5 with pressure transducer 3, level
Fix pressure transducer 3, the power transmission concrete-pile 1 slinging prefabricated with the lifting arm of hydraulic static pile pressing machine 2, power transmission coagulation
Having, at the bottom of the stake of soil stake 1, the groove set in advance, its size and pressure transducer 3 adjoining dimensions, then by power transmission concrete-pile 1
Carry out centering, a groove center at the bottom of making and pressure transducer 3 center superposition, clamp pile body with jaw after completing centering, slowly drop
Fall, prepare prestrain, then power transmission concrete-pile 1 is slowly moved down, a groove at the bottom of making and pressure transducer 3 top contact, connect
The mark touched is that pressure transducer 3 number of degrees have significant change, if the change of pressure transducer 3 number of degrees is inconspicuous, and power transmission coagulation
Part outside soil stake 1 bottom groove contacts with short column 4 or bracket column 6, then will move on power transmission concrete-pile 1；Again in pressure
Pitch-based sphere pad on built-in fitting 5 under force transducer 3, then placement force sensor 3 is fixing, then by power transmission concrete-pile 1
Move down, make power transmission concrete-pile 1 bottom groove and pressure transducer 3 top contact, if pressure transducer 3 number of degrees are the most unchanged,
Then will on power transmission concrete-pile 1 move, and continue increase pad till pressure transducer 3 number of degrees change, keep power transmission mix
Pressure transducer 3 number of degrees, when pressure transducer 3 has the number of degrees to change, are returned to zero by the position of solidifying soil stake 1, start to load.
Above-described detailed description of the invention, is entered the purpose of this utility model, technical scheme and beneficial effect
One step describes in detail, be it should be understood that and the foregoing is only detailed description of the invention of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all within spirit of the present utility model and principle, any amendment, the equivalent made are replaced
Change, improvement etc., within should be included in protection domain of the present utility model.
Claims (7)
1., for a loading connecting structure for spread foundation full scale test, including charger, described charger jaw presss from both sides
Power transmission concrete-pile (1), described power transmission concrete-pile (1) lower section is had to be provided with short column (4), it is characterised in that described short column (4)
Side is fixed with bracket column (6)；The cross section of described bracket column (6) is right-angled trapezium, wherein, and going to the bottom with short of bracket column (6)
The side of post (4) connects, and the right angle waist of bracket column (6) is positioned in same level with the upper surface of short column (4).
A kind of loading connecting structure for spread foundation full scale test the most according to claim 1, it is characterised in that institute
Stating charger is hydraulic static pressing machine (2).
A kind of loading connecting structure for spread foundation full scale test the most according to claim 1, it is characterised in that institute
State all to connect above short column (4), bracket column (6) and have built-in fitting (5).
A kind of loading connecting structure for spread foundation full scale test the most according to claim 3, it is characterised in that institute
State built-in fitting (5) to be positioned on the axis of short column (4), bracket column (6).
A kind of loading connecting structure for spread foundation full scale test the most according to claim 3, it is characterised in that institute
State and built-in fitting (5) is provided with pressure transducer (3), described pressure transducer (3) external piezometry instrument.
A kind of loading connecting structure for spread foundation full scale test the most according to claim 5, it is characterised in that institute
State and be provided with wedge between built-in fitting (5) and pressure transducer (3).
A kind of loading connecting structure for spread foundation full scale test the most according to claim 1, it is characterised in that institute
State and be provided with groove at power transmission concrete-pile (1) bottom centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620550455.5U CN205839819U (en) | 2016-06-08 | 2016-06-08 | A kind of loading connecting structure for spread foundation full scale test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620550455.5U CN205839819U (en) | 2016-06-08 | 2016-06-08 | A kind of loading connecting structure for spread foundation full scale test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205839819U true CN205839819U (en) | 2016-12-28 |
Family
ID=57623429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620550455.5U Expired - Fee Related CN205839819U (en) | 2016-06-08 | 2016-06-08 | A kind of loading connecting structure for spread foundation full scale test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205839819U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908790A (en) * | 2016-06-08 | 2016-08-31 | 国网四川省电力公司经济技术研究院 | Loading and connecting structure for full scale tests of extended foundation |
| CN107340383A (en) * | 2017-07-18 | 2017-11-10 | 国网四川省电力公司经济技术研究院 | Device and preparation method for the measurement of concrete spread foundation sub-grade reaction distribution |
-
2016
- 2016-06-08 CN CN201620550455.5U patent/CN205839819U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908790A (en) * | 2016-06-08 | 2016-08-31 | 国网四川省电力公司经济技术研究院 | Loading and connecting structure for full scale tests of extended foundation |
| CN105908790B (en) * | 2016-06-08 | 2018-05-25 | 国家电网公司 | A kind of loading connecting structure for spread foundation full scale test |
| CN107340383A (en) * | 2017-07-18 | 2017-11-10 | 国网四川省电力公司经济技术研究院 | Device and preparation method for the measurement of concrete spread foundation sub-grade reaction distribution |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102621010B (en) | Multifunctional testing machine for deep surrounding rock anchoring performance | |
| CN103076192B (en) | Portable performance test device for automatic control of combined action of bidirectional load of beam-column joint and determination method | |
| CN103033385B (en) | Device and method of self-balancing portable automatic control shear wall horizontal vertical load common effect performance test | |
| CN102706734B (en) | Loading test device and method of asymmetric lateral-force-resisting structure | |
| CN105699203B (en) | A kind of experimental rig and method for measuring construction material compression strength under confined pressure | |
| CN106018270B (en) | A kind of pull-out test device being suitable for enhancing muscle material bonding-sliding Hysteresis Behavior test | |
| CN105887946B (en) | A kind of laboratory testing rig of Model Pile Combined load | |
| CN205642868U (en) | Two -way load combined action capability test device of herringbone post node | |
| CN202599766U (en) | Multifunctional test machine for anchorage performance of deep surrounding rock | |
| CN203037476U (en) | Portable automatic control beam column node two-way load interaction performance testing device | |
| CN107782606A (en) | A kind of experimental rig and its application method of the local buckling behavior of double steel plate combined concrete shear wall steel plate | |
| CN201340369Y (en) | Indoor test platform for roadbed soil mass resilience modulus | |
| CN105259107A (en) | Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method | |
| CN201196616Y (en) | Dead-load pile-load type test apparatus for engineering pile | |
| CN205839819U (en) | A kind of loading connecting structure for spread foundation full scale test | |
| CN107101872A (en) | Reinforced beam torsion test device | |
| CN103063514B (en) | Radial inclination compressive strength test device for round-section concrete-filled steel tube | |
| CN206696076U (en) | Reinforced beam torsion test device | |
| CN202466651U (en) | Loading device for axial force test of prestressed pipe pile | |
| CN219637981U (en) | Test device for testing bearing capacity of stiff composite pile | |
| CN203455183U (en) | Reaction frame platform with movable bottom backing plate | |
| CN205049466U (en) | Device of survey concrete and steel bar anchoring bearing capacity | |
| CN105862944A (en) | Full-scale testing apparatus for spread foundations | |
| CN201289410Y (en) | Equipment for testing prototype shield tunnel structure loading soil pressure and water pressure independently | |
| CN205506574U (en) | Measure building material compressive strength's under confined pressure test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20190608 |