CN206607614U - A kind of counterforce device for concrete tubular pile loading test - Google Patents
A kind of counterforce device for concrete tubular pile loading test Download PDFInfo
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- CN206607614U CN206607614U CN201720228020.3U CN201720228020U CN206607614U CN 206607614 U CN206607614 U CN 206607614U CN 201720228020 U CN201720228020 U CN 201720228020U CN 206607614 U CN206607614 U CN 206607614U
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Abstract
The utility model discloses a kind of counterforce device for concrete tubular pile loading test, including girder, auxiliary girder and anchoring pile；The form of 6 anchoring piles is arranged using 1 static-loading test stake surrounding, 6 anchoring piles are arranged symmetrically in static-loading test stake both sides, counter-force is applied to middle 1 static-loading test stake by girder, it is simple in construction, set up convenient, save test period, expense, support personnel, instrument and equipment safety, anchoring pile is to plug presentation ring-type in pile tube to be equally spaced reinforcing bar and irrigate slightly expanded concrete and formed, strengthen the breakout capacity of anchoring pile, maximum experiment loading of the present utility model is up to 8000kN, meet the detection requirement of static-loading test pile bearing capacity.
Description
【Technical field】
The utility model belongs to industry and civil buildings pile detection field, it is adaptable to quiet as building single pile vertical resistance pressure
Experiment is carried, is related to a kind of counterforce device for concrete tubular pile loading test.
【Background technology】
As pile foundation technology is continued to develop with theoretical, concrete tubular pile has turned into a kind of domestic and international wide variety of pile foundation
Type.Concrete tubular pile is divided into post-tensioned prestressing stake and pretensioned-prestressed tube pile, and (PC is managed prestressed concrete pipe pile
Stake) and thin tubular piles produced by prestressed concrete (PTC pile tubes) and high strength prestressed concrete pipe pile (PHC pile tubes) etc., due to it
With factorial praluction, that pile quality is reliable, bearing capacity of single pile is high, penetration power is strong, low cost, speed of application are fast etc. is many excellent
Point, in the development course of nearly more than 20 years, be widely used in industry with civil buildings, electric power, municipal administration, metallurgy, harbour, railway,
The fields such as highway.According to《JGJ106-2014 architecture foundation pile inspection specifications》3.1.1 provision provides that pile detection should basis
Testing goal, the applicability of detection method, the design condition of pile foundation, pile-formation process etc., reasonable selection single pile vertical resistance pressure static load
The detection method such as experiment, unit for single-pile vertical anti-pulling static test, single pile horizontally loading test.
In Design of Foundation, checking of bearing capacity should be carried out to pile foundation, single-pile static loading test is detection vertical bearing capacity of single pile
Most directly perceived, reliable method.《JGJ106-2014 architecture foundation pile inspection specifications》3.1.2 provision provides that design grade is first
The pile foundation of level, should carry out static-loading test stake and detect and determine ultimate bearing capacity of single pile before construction；4.1.2 bar is provided,
There is provided the static-loading test stake of foundation for design, the ground resistance that should be loaded onto a side and stake end reaches capacity state,
When the bearing capacity of stake is controlled by pile strength, it can be loaded by the loading capacity of design requirement；4.1.3 bar is provided, engineering pile
During acceptance test, loading capacity is no less than 2.0 times of the bearing capacity of single pile of design requirement.In pile bearing capacity detection
In, anchoring pile (6) counterforce device is typically chosen, is especially widely used in pouring pile bearing capacity detection.To pipe of concrete
For stake, the influence of welding quality when the design strength limit value and pile extension of pile body arrangement of reinforcement, pile tube bears easily to occur during withdrawal resistance
Situations such as reinforcing bar is broken, weld seam is disengaged, its loading test uses ballasting platform counterforce device mostly.For ballast platform counter-force
Device, heap weight disposably need to be deposited on bearing platform, and its weight is delivered to ground, such as support pier bottom and week by support pier
Exclosure base is dealt with improperly, and whole ballast platform can be caused to collapse, and jeopardizes instrument and equipment and testing crew safety.Large-tonnage static load is tried
When testing, the heap weight set-up time is longer, and counterweight needs vehicle transport and crane to coordinate, and experimentation cost is higher.To solve pipe of concrete
Stake, which is used, can take the breakout capacity and Optimum Experiment technical scheme of strengthening pile tube in the restriction of anchoring pile counterforce device, engineering, right
Save test period, expense and safety etc. and be respectively provided with important effect and engineering significance.
【Utility model content】
To solve the restriction of existing counterforce device structure, the purpose of this utility model is to provide a kind of for pipe of concrete
The counterforce device of pile bearing capacity detection, takes the arrangement of optimization static-loading test stake and strengthens the breakout capacity of pile tube,
Save test period, expense and support personnel, instrument and equipment safety.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of counterforce device for concrete tubular pile loading test, including girder, auxiliary girder and anchoring pile；Anchoring pile is pile tube
Inside plug presentation ring-type to be equally spaced reinforcing bar and irrigate slightly expanded concrete and formed, anchoring pile upper reinforcement is exposed to be used for and top
Structure is connected；The form of 6 anchoring piles is arranged using 1 static-loading test stake surrounding, 6 anchoring piles are arranged symmetrically in vertically
Compressive static load test stake both sides, 3 anchoring piles of side are equally spaced, static-loading test pile center and anchoring pile center it
Between distance be more than 4D and more than 2.0m, D is the intended diameter of static-loading test stake, is symmetrically distributed in vertical compression quiet
Connected between two anchoring piles for carrying test pile both sides by auxiliary girder, auxiliary girder is connected by the exposed reinforcing bar of bolt arrangement and anchoring pile top
Connect, 3 auxiliary girders are connected to middle 1 static-loading test stake by girder applies counter-force.
Further, 3 auxiliary girders are connected to middle 1 static-loading test stake by two girders applies counter-force.
Further, girder is provided directly with jack with static-loading test stake, and it is big to adjust counter-force by jack
It is small.
Further, anchoring pile diameter is not less than 500mm, the long 30m~40m of stake, using 3~4 section single-unit length 10~12m pile extensions
Composition.
Further, 10 diameter 25mm reinforcing bar is plugged in pile tube, reinforcing bar is away from pile tube inwall 3cm and equidistantly cloth annular in shape
Put, perfusion C30 slightly expanded concretes formation anchoring pile in pile tube.
Counterforce device of the present utility model for concrete tubular pile loading test, including girder, auxiliary girder and anchoring pile；Adopt
The form of 6 anchoring piles is arranged with 1 static-loading test stake surrounding, 6 anchoring piles are arranged symmetrically in the examination of vertical compression static load
A both sides is tested, counter-force is applied to middle 1 static-loading test stake by girder, it is simple in construction, set up convenient, save
Test period, expense, support personnel, instrument and equipment safety, anchoring pile are to plug presentation ring-type in pile tube to be equally spaced reinforcing bar simultaneously
Perfusion slightly expanded concrete is formed, and strengthens the breakout capacity of anchoring pile, and maximum experiment of the present utility model is loaded up to 8000kN,
Meet the detection requirement of static-loading test pile bearing capacity.
Further, anchoring pile uses in per root canal pile and plugs 10 reinforcing bars of Ф 25, away from annular in shape equidistant at pile tube inwall 3cm
Arrangement, reinforcing bar length 21m, during anchoring pile single-unit 10~12m of length, it can be ensured that the section anchoring pile of top 2 is reliably connected, and is bearing withdrawal resistance
When top 2 save and occur without the rough sledding of disengagement.
【Brief description of the drawings】
Fig. 1 is static-loading test stake and anchoring pile floor plan；
Fig. 2 a static tests equipment installs top view；Fig. 2 b static test counterforce device side views；
In figure：1 is girder；2 be auxiliary girder；3 be load measurement instrument and equipment；4 be jack；5 be that vertical compression static load is tried
Test stake；6 be anchoring pile；7 be reinforcing bar in pile tube；8 be C30 slightly expanded concretes；Stake and datum line beam on the basis of 9；10 be displacement observation
Instrument and equipment.
【Embodiment】
With reference to the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clear
Chu, complete description, embodiment described herein are only a part of embodiment of the present utility model, and not all implementation
Example.Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained under the premise of no creative work
Every other embodiment, belongs to the utility model protection domain.
The utility model is used for the counterforce device of concrete tubular pile loading test, quiet using 6 anchoring piles, 1 vertical compression
Carry the arrangement of test pile, the distance between static-loading test pile center and anchoring pile center are more than 4D and are more than
2.0m, D are static-loading test stake intended diameter, and middle 1 static-loading test stake is applied by 6 anchoring piles
Counter-force.Anchoring pile diameter is not less than 500mm, the long 30m~40m of stake, anti-using this using 3~4 section single-unit length 10~12m pile extensions
The maximum experiment loading of power apparatus vertical compression is up to 8000kN.
The breakout capacity for strengthening anchoring pile, anchoring pile uses in per root canal pile and plugs 10 reinforcing bars of Ф 25, away from pile tube inwall
Annularly it is equally spaced at 3cm, reinforcing bar length 21m, perfusion C30 slightly expanded concretes are formed in pile tube, influx height 20m,
Exposed 1m is used to be coupled with top counter-force equipment, during anchoring pile single-unit 10~12m of length, it can be ensured that the section anchoring pile of top 2 reliably connects
Connect, when bearing withdrawal resistance, the rough sledding for occurring without disengagement is saved on top 2.
Illustrate the utility model scheme below by way of specific embodiment：
It is shown in Figure 1, it is static-loading test stake and anchoring pile floor plan, anchoring pile experiment is using 6 anchoring piles
The arrangement of counter-force is provided for 1 static-loading test stake, trial zone is respectively arranged 1 group of static-loading test stake
3, anchoring pile 12, static-loading test stake numbering are G1~G3, and the numbering of anchoring pile 6 is M1~M12.Resistance to compression vertical compression is quiet
Carry the distance between experiment pile center and the center of anchoring pile 6 and be more than 4D and more than 2.0m, D is the design of static-loading test stake 5
Diameter, when 5 footpaths of static-loading test stake are 600mm, the arrangement of anchoring pile point 3 is put, horizontal spacing 5000mm, array pitch
2500mm, static-loading test stake 5 is arranged between second row anchoring pile 6, static-loading test stake 5 and second row phase
The spacing of adjacent anchoring pile 6 is 2500mm.
Fig. 2 a static tests equipment installs top view；Fig. 2 b static test counterforce device side views.Experiment loading facilities is adopted
Worked asynchronously with the parallel connection of two or more hydraulic jacks, installation jack is made a concerted effort in geometry of the center for 6 anchoring piles 6
The heart, load measurement instrument and equipment 3 is arranged between jack 4 and static-loading test stake 5, and jack 4 applies load
In static-loading test stake 5, while by the control load of the load measurement such as force snesor instrument and equipment 3, load leads to successively
Cross girder 1, auxiliary girder 2 and be transferred to the reinforcing bars 7 of 10 Ф 25 plugged in 6 anchoring piles 6,20m and C30 is passed through in the insertion anchoring pile 6 of reinforcing bar 7
Slightly expanded concrete 8 is anchored.When carrying out static-loading test, 6 anchoring piles 6, which are provided, pulls out counter-force not less than 8000kN.
It is being more than 4 times of stake footpaths and more than setting reference stake and datum line beam 9, datum line beam 9 at 2.0m away from 5 centers of static-loading test stake
It is arranged near static-loading test stake 5, vertical displacement observation instrument equipment 10 is connected to static-loading test stake 5
On datum line beam 9.Plus, off-load and data acquisition can be completed by test for static load instrument, static-loading test is performed《JGJ106-
2014 architecture foundation pile inspection specifications》Pertinent regulations.
Above example is merely to illustrate the technical solution of the utility model rather than its limitations, although with reference to above-mentioned implementation
The utility model is described in detail example, and those of ordinary skill in the art still can be to of the present utility model specific
Embodiment is modified or equivalent substitution, and these without departing from the utility model spirit and scope any modification or
Equivalent substitution, it is within claims of the present utility model.
Claims (5)
1. a kind of counterforce device for concrete tubular pile loading test, it is characterised in that：Including girder (1), auxiliary girder (2) and
Anchoring pile (6)；Anchoring pile (6) is to plug presentation ring-type in pile tube to be equally spaced reinforcing bar and irrigate slightly expanded concrete and formed, anchoring pile
(6) upper reinforcement is exposed is used for and superstructure connection；
The form of 6 anchoring piles (6) is arranged using 1 static-loading test stake (5) surrounding, 6 anchoring piles (6) are arranged symmetrically in
Static-loading test stake (5) both sides, 3 anchoring piles (6) of side are equally spaced, in static-loading test stake (5)
The distance between the heart and anchoring pile (6) center are more than 4D and more than 2.0m, and D is the intended diameter of static-loading test stake (5),
Connected between two anchoring piles (6) for being symmetrically distributed in static-loading test stake (5) both sides by auxiliary girder (2), auxiliary girder (2) leads to
Bolt arrangement and the exposed bar connecting in anchoring pile (6) top are crossed, 3 auxiliary girders (2) are connected by girder (1) and erected to middle 1
Apply counter-force to compressive static load test stake (5).
2. a kind of counterforce device for concrete tubular pile loading test according to claim 1, it is characterised in that：3
Root auxiliary girder (2) is connected to middle 1 static-loading test stake (5) by two girders (1) applies counter-force.
3. a kind of counterforce device for concrete tubular pile loading test according to claim 1 or 2, its feature exists
In：Girder (1) is provided directly with jack (4) with static-loading test stake (5), and counter-force size is adjusted by jack.
4. a kind of counterforce device for concrete tubular pile loading test according to claim 3, it is characterised in that：Anchor
Stake diameter is not less than 500mm, the long 30m~40m of stake, is constituted using 3~4 section single-unit 10~12m of length pile extensions.
5. a kind of counterforce device for concrete tubular pile loading test according to claim 3, it is characterised in that：Pipe
10 diameter 25mm reinforcing bar is plugged in stake, reinforcing bar is away from pile tube inwall 3cm and is annularly equally spaced, perfusion C30 in pile tube
Slightly expanded concrete formation anchoring pile (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228020.3U CN206607614U (en) | 2017-03-09 | 2017-03-09 | A kind of counterforce device for concrete tubular pile loading test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228020.3U CN206607614U (en) | 2017-03-09 | 2017-03-09 | A kind of counterforce device for concrete tubular pile loading test |
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| CN206607614U true CN206607614U (en) | 2017-11-03 |
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| CN201720228020.3U Active CN206607614U (en) | 2017-03-09 | 2017-03-09 | A kind of counterforce device for concrete tubular pile loading test |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975075A (en) * | 2017-11-08 | 2018-05-01 | 浙江理工大学 | A kind of construction technology for existing load-bearing engineering pile detection structural measure |
| CN108560614A (en) * | 2018-01-25 | 2018-09-21 | 唐山海港地环地质勘察有限公司 | It is a kind of to use the detection method for thering is end plate prefabricated tubular pile to make anchoring pile |
| CN108824500A (en) * | 2018-06-21 | 2018-11-16 | 卓典机器人（海南）有限公司 | Combined support beam counter-force loading device |
| CN109056854A (en) * | 2018-08-14 | 2018-12-21 | 中冶建筑研究总院（深圳）有限公司 | A kind of single-pile vertical orientation static test counterforce device and applying method |
| CN109778926A (en) * | 2019-03-22 | 2019-05-21 | 交通运输部天津水运工程科学研究所 | A kind of single pile compression dead load test device, construction method and specific purpose tool |
| CN110004998A (en) * | 2019-05-14 | 2019-07-12 | 中国五冶集团有限公司 | A kind of bored concrete pile test pile apparatus and its pile testing method |
-
2017
- 2017-03-09 CN CN201720228020.3U patent/CN206607614U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975075A (en) * | 2017-11-08 | 2018-05-01 | 浙江理工大学 | A kind of construction technology for existing load-bearing engineering pile detection structural measure |
| CN107975075B (en) * | 2017-11-08 | 2020-05-12 | 浙江理工大学 | Construction process for existing load-bearing engineering foundation pile detection structure measures |
| CN108560614A (en) * | 2018-01-25 | 2018-09-21 | 唐山海港地环地质勘察有限公司 | It is a kind of to use the detection method for thering is end plate prefabricated tubular pile to make anchoring pile |
| CN108824500A (en) * | 2018-06-21 | 2018-11-16 | 卓典机器人（海南）有限公司 | Combined support beam counter-force loading device |
| CN108824500B (en) * | 2018-06-21 | 2020-05-19 | 卓典机器人（海南）有限公司 | Combined counter-force loading device for supporting beam |
| CN109056854A (en) * | 2018-08-14 | 2018-12-21 | 中冶建筑研究总院（深圳）有限公司 | A kind of single-pile vertical orientation static test counterforce device and applying method |
| CN109056854B (en) * | 2018-08-14 | 2023-11-14 | 中冶建筑研究总院（深圳）有限公司 | Reaction force device for single pile vertical static load test and application method |
| CN109778926A (en) * | 2019-03-22 | 2019-05-21 | 交通运输部天津水运工程科学研究所 | A kind of single pile compression dead load test device, construction method and specific purpose tool |
| CN109778926B (en) * | 2019-03-22 | 2024-02-02 | 交通运输部天津水运工程科学研究所 | Single pile compression-resistant static load test device, construction method and special tool |
| CN110004998A (en) * | 2019-05-14 | 2019-07-12 | 中国五冶集团有限公司 | A kind of bored concrete pile test pile apparatus and its pile testing method |
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