CN206308720U - CFG inspection bearing capacity loading counterforce device - Google Patents
CFG inspection bearing capacity loading counterforce device Download PDFInfo
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- CN206308720U CN206308720U CN201621279798.9U CN201621279798U CN206308720U CN 206308720 U CN206308720 U CN 206308720U CN 201621279798 U CN201621279798 U CN 201621279798U CN 206308720 U CN206308720 U CN 206308720U
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Abstract
A kind of CFG inspection bearing capacity loading counterforce device is disclosed in the utility model, vertically loaded for testing CFG, include at least four angularly circumference array in experiment CFG around engineering CFG, a drawing piece is embedded with the every axis of engineering CFG, drawing piece in same two engineering CFG stakes diametrically fixes a reaction beam jointly, and whole reaction beams are contradicted and intersected at the axis of experiment CFG up and down, the jack of a jacking reaction beam straight up is provided between the lower surface of the reaction beam of experiment CFG and bottom, it provides point by the use of CFG of completion of having constructed as counter-force, replace existing anchoring pile, the step of saving carrying heavy goods lake and comprehensively build anchoring pile, simplify the static-loading test process of CFG.
Description
Technical field
The utility model is related to a kind of acceptance of work experimental rig, more particularly to a kind of CFG inspection bearing capacity loading
Counterforce device.
Background technology
CFG be CFG abbreviation, it is to be added water to mix and stir by cement, flyash, rubble, aggregate chips and sand
The caking ability high stake for being formed, and inter-pile soil, mattress layer form compound foundation together.General CFG quantity is more, densely distributed,
, it is necessary to be detected to part CFG during the acceptance of work, and its detection method common are three kinds：Low strain reflected wave method, list
Stake vertical compression static loading experiment and core drilling method test three kinds.
The practice of existing single pile bearing capacity is the stake top at CFG of the experiment that needs to carry out an acceptance inspection
Imposed load, and observe the settling amount of stake and determine the bearing capacity of single-pile vertical orientation.Anti- static pressure experiment can provide clear and definite single pile
Ultimate vertical bearing capacity standard Value Data, therefore, single pile bearing capacity must be done to CFG examination.
The loading counterforce device of conventional single pile bearing capacity mainly has three kinds：Anchor pile beam counterforce device,
The engagement of ballasting platform counterforce device and above two device is used.Ballasting platform counterforce device is (such as institute in Figure of description 7
Show), it is necessary to the weights such as sandstone are stacked in CFG stakes to be checked and accepted, to observe the sedimentation situation of CFG, build the mistake with dismounting
Journey is complex, also, it is the axle center for acting perpendicularly to stake that weight will also control the combined gravity of weight when stacking；And anchoring pile is anti-
The form of power beam（As shown in Figure of description 6）, at least four anchoring piles, four anchoring piles are played around to be checked and accepted CFG
Center is trapped among by CFG, girder is set on anchoring pile and is connected with secondary beam and with the anchor pole on anchoring pile, jacking is applied using jack
Power, counter-force is provided by girder and secondary beam, observes the sedimentation of stake.
Above-mentioned two methods, otherwise carrying heavy goods are needed, otherwise need to build anchoring pile and reaction beam, construction inconvenience.
Utility model content
The purpose of this utility model is to provide a kind of CFG inspection bearing capacity loading counterforce device, and it utilizes and has applied
CFG of work completion provides point as counter-force, replaces existing anchoring pile, the step of saving carrying heavy goods or comprehensively build anchoring pile,
Simplify the static-loading test process of CFG.
Above-mentioned purpose of the present utility model technical scheme is that：A kind of CFG inspection bearing capacity
Loading counterforce device, vertically loaded for testing CFG, include at least four angularly circumference array in test CFG
Stake around engineering CFG, be embedded with a drawing piece at the every axis of engineering CFG, positioned at it is same diametrically
Two engineering CFG stakes on drawing piece fix a reaction beam jointly, and whole reaction beams are contradicted and intersect at experiment up and down
At the axis of CFG, a jacking reaction beam straight up is provided between the lower surface of the reaction beam of experiment CFG and bottom
Jack.
By using pre-buried drawing piece in above-mentioned technical proposal, engineering CFG, using drawing piece as the connection of reaction beam
Place, jack pushes up the process of reaction beam upwards, and drawing piece provides counter-force so that experiment CFG piles are by power straight down, you can
Complete the static-loading test process of CFG.During this, it is not necessary to stack weight to experiment CFG stake tops portion, also without
Anchoring pile need to be specially set, only need in engineering CFG pile driving constructions internally pre-buried drawing piece, using being embedded in advance in engineering CFG
Drawing piece provides point as counter-force, substitutes the anchor pole on anchoring pile, simplifies construction procedure.
Preferably, the via passed for drawing piece is provided with the reaction beam, the via is stretched out on the drawing piece
End on be provided with limit drawing piece extension elongation anchorage.
By using above-mentioned technical proposal, in order to ensure that counter-force is vertically loaded onto on the axis of experiment CFG, engineering CFG
Stake needs selection with test that CFG is center of circle circumference angularly array at least 4, and ensures engineering CFG stake tops face and counter-force
The length of the drawing piece between beam lower surface is consistent, and the length that drawing piece stretches out via more can be reliably limited using anchorage
Degree.
Preferably, it is provided with a backing plate between the jack and experiment CFG.
Effect vertically is needed to experiment CFG stake tops face by using the power of above-mentioned technical proposal, jack, and is tested
The flatness in CFG stake tops face is difficult to what is ensured, using backing plate as levelling part, the loading direction of jack can be made more smart
Really.
Preferably, the drawing piece uses steel strand wires or reinforcing bar.
By using above-mentioned technical proposal, using steel strand wires or reinforcing bar, can be allowed to and the cement for forming engineering CFG
Fine coal ash broken stones combine more preferable, to be reliably formed the pre-buried structure of drawing piece, prevent during jack jacking, drawing piece with
Engineering CFG disengages pre-buried relation.
Preferably, pressure sensor is provided with the position for being contradicted with reaction beam on the jack.
Read what experiment CFG can bear by using above-mentioned technical proposal, in existing static-loading test
Maximum static lotus, is obtained by the settling height after longitudinal loading, with pressure sensor generally by observation experiment CFG
The maximum static lotus that registration can bear as CFG, can intuitively read magnitude of load, without calculating.
In sum, the utility model has the advantages that：Pre-buried drawing piece in engineering CFG, is made with drawing piece
It is the junction of reaction beam, jack pushes up the process of reaction beam upwards, and drawing piece provides counter-force so that experiment CFG piles are by perpendicular
Straight downward power, you can complete the static-loading test process of CFG.During this, it is not necessary to experiment CFG stake tops
Weight is stacked in portion, and anchoring pile is set without special, only need in engineering CFG pile driving constructions internally pre-buried drawing piece, using pre-buried
Point is provided as counter-force in the drawing piece in engineering CFG, the anchor pole on anchoring pile is substituted, simplifies construction procedure.
Brief description of the drawings
Fig. 1 is the axonometric drawing of embodiment one；
Fig. 2 is the top view of embodiment one；
Fig. 3 is the explosive view of embodiment one；
Fig. 4 is the sectional view in A-A directions in Fig. 1；
Fig. 5 is B portions enlarged drawing in Fig. 4；
Fig. 6 is the structure principle chart of the form of the anchoring pile reaction beam referred in background technology；
Fig. 7 is the ballasting platform counterforce device referred in background technology.
In figure, 1, experiment CFG；2nd, engineering CFG；3rd, drawing piece；4th, reaction beam；40th, via；5th, anchorage；6th, backing plate；
7th, jack；70th, top bracket；71st, base；8th, pressure sensor.
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment one：
A kind of CFG inspection bearing capacity loading counterforce device, as depicted in figs. 1 and 2, including engineering CFG 2, engineering CFG
Stake 2 is in cylinder, and four are divided into two pairs altogether, it is also possible to be greater than four other even number roots, and this four engineering CFG 2 is located at
On same circumference and be uniformly arranged, two engineering CFG 2 of any pair be located at circumference it is same diametrically.Four engineering CFG
The center of stake 2 is provided with experiment CFG 1, and experiment is located at the four engineering CFG center of circle of 2 place circumference for CFG 1.In every engineering
The central axis of CFG 2 is provided with drawing piece 3, and drawing piece 3 is steel strand wires or reinforcing bar, with reference to Fig. 3 and Fig. 4, the one of drawing piece 3
Part is located inside engineering CFG 2, and another part exposes the outside at engineering CFG 2 and the first segment distance of external part.Drawing
Part 3 stretches into the bearing capacity that length in engineering CFG 2 estimates according to detection and determines, it is to avoid because bearing capacity it is excessive drawing piece 3 from
Extracted in engineering CFG 2.
With reference to 3 and Fig. 4, reaction beam 4, the cross section of reaction beam 4 are provided with same diametrically two engineering CFG 2
In I-shaped, every reaction beam 4 is respectively arranged at the two ends with a via 40, and via 40 is penetrated to bottom surface, engineering from the top surface of reaction beam 4
Drawing piece 3 on CFG 2 passes through via 40.Same diameter two ends drawing piece 3 from engineering CFG 2 terminations to via 40
Apart from identical, to ensure that the same two ends of reaction beam 4 diametrically are on sustained height during detection.
As shown in Figure 5, anchorage 5 is provided with via 40, anchorage 5 is for one section of external diameter is identical with the diameter of via 40, internal diameter
With the outline diameter identical hollow pipe of drawing piece 3, anchorage 5 is enclosed within drawing piece 3, anchorage 5 and 3 points of reaction beam 4 and drawing piece
Tong Guo not be welded and fixed so that the drawing piece 3 between the same two ends of diametrically reaction beam 4 and engineering CFG 2 has fixed phase
Same length, and another corresponding drawing piece 3 diametrically will have more regular length, this regular length is the height of reaction beam 4, to protect
The two ends of the card under tension of drawing piece 3 reaction beam 4 when stretching on same level height, two reaction beams 4 on different-diameter
The engineering CFG center of circle of 2 place circumference is contradicted and intersected at up and down.
With reference to Fig. 3 and Fig. 4, backing plate 6 is provided with testing CFG 1, backing plate 6 is square plate, and the material of backing plate 6 is
2Cr13, or 45 steel, are unlikely to deform to provide good platform using the high elastic modulus of material, it is to avoid because of experiment CFG
1 cross cut end (of a beam) of stake there is a problem of uneven and influence testing result.Jack 7, jack 7 are provided with the top of backing plate 6
Including top bracket 70 and base 71, the lower plane of base 71 is fitted with backing plate 6, and top bracket 70 is withstood on positioned at the anti-of bottom
The bottom surface of power beam 4.At top, the contact position of bracket 70 and reaction beam 4 is additionally provided with pressure sensor 8, and pressure sensor 8 is used
Broad sense electronics PTG504 type pressure sensors, so as to directly read stress value therebetween.
The operation principle of the CFG inspection bearing capacity loading counterforce device is as follows：
During detection, the upward jack-up of jack 7 applies a upward power to reaction beam 4, because the two ends of reaction beam 4 are by engineering
Drawing piece 3 on CFG 2 is fixed, and the middle part of reaction beam 4 of bottom produces small deformation, and the reaction beam 4 of top is pressed in down
Reducing distortion amount can be played a part of on square reaction beam 4, so that bottom reaction beam 4 can bear bigger power without quilt
Jack-up.Because the effect of power is mutual, jack 7 is subject to the downward power that reaction beam 4 applies, and transfers force to jack
On experiment CFG 1 of 7 lower sections.Settling height after experiment is observed CFG 1 by longitudinal loading reaches predetermined value, reads pressure
The registration of force snesor 8, this numerical value is used as the CFG 1 maximum static lotus that can be born of experiment.So can intuitively read load
Lotus size, it is not necessary to calculate.
Embodiment two：
A kind of CFG inspection bearing capacity loads the building method of counterforce device, comprises the following steps：
S1：Stake bit-identify：Using mark equipment on the ground that will be constructed by design requirement identification pile position, it is determined that experiment
CFG 1 and engineering CFG 2 positions so that with any one experiment, CFG 1 is that circle is drawn in the center of circle, at least in the presence of two pairs totally four
Engineering CFG 2 two ends for being located at diameter.
S2：CFG pile driving constructions：The construction of CFG is carried out according to design and code requirement, and it is pre- on engineering CFG 2 axis
Bury drawing piece 3 so that the part of drawing piece 3 is located inside engineering CFG 2, and built-in length is true according to the bearing capacity that detection is estimated
Fixed, another part exposes the outside at engineering CFG 2 and the first segment distance of external part.
S3：Build reaction beam 4：Same diametrically two engineering CFG 2 of selection, the via 40 at the two ends of reaction beam 4 is worn
The drawing piece 3 of diametrically engineering CFG 2 is crossed, and keeps the drawing between the via 40 at two ends and engineering CFG 2 terminations
Part 3 is highly identical, is then fixed reaction beam 4 with anchorage 5.Remaining reaction beam 4 diametrically is fixed with same method, it is ensured that
The height distance of reaction beam 4 is differed between the length of drawing piece 3 on adjacent different-diameter, and causes adjacent upper and lower two reaction beams
Contradicted in home position between 4.
S4：Jack 7 and pressure sensor 8 are installed：Backing plate 6 is placed on testing CFG 1, jack is placed on backing plate 6
7, the top termination of jack 7 is against the lower section of reaction beam 4 of bottom, and pressure sensing is laid between jack 7 and reaction beam 4
Device 8.
This specific embodiment is only that, to explanation of the present utility model, it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (5)
1. a kind of CFG inspection bearing capacity loading counterforce device, is vertically loaded for testing CFG (1), it is characterized in that,
Include at least four angularly engineering CFG (2) of the circumference array around experiment CFG (1), the every engineering CFG
A drawing piece (3) is embedded with the axis of stake (2), the drawing piece on same two engineering CFG (2) diametrically
(3) reaction beam (4) is fixed jointly, and whole reaction beams (4) contradict and intersect at the CFG axis of (1) of experiment up and down,
The jack of a jacking reaction beam (4) straight up is provided between the lower surface of the reaction beam (4) of experiment CFG and bottom
(7)。
2. CFG inspection bearing capacity according to claim 1 loads counterforce device, it is characterized in that, on the reaction beam (4)
The via (40) passed for drawing piece (3) is provided with, is provided with the end that the via (40) are stretched out on the drawing piece (3)
Limit the anchorage (5) of the extension elongation of drawing piece (3).
3. it is according to claim 2 CFG inspection bearing capacity loading counterforce device, it is characterized in that, the jack (7) with
A backing plate (6) is provided between experiment CFG (1).
4. CFG inspection bearing capacity according to claim 1 loads counterforce device, it is characterized in that, the drawing piece (3) is adopted
With steel strand wires or reinforcing bar.
5. the CFG inspection bearing capacity according to claim 1-4 any one loads counterforce device, it is characterized in that, it is described
Pressure sensor is provided with the position contradicted with reaction beam (4) on jack (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621279798.9U CN206308720U (en) | 2016-11-24 | 2016-11-24 | CFG inspection bearing capacity loading counterforce device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621279798.9U CN206308720U (en) | 2016-11-24 | 2016-11-24 | CFG inspection bearing capacity loading counterforce device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206308720U true CN206308720U (en) | 2017-07-07 |
Family
ID=59245448
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621279798.9U Expired - Fee Related CN206308720U (en) | 2016-11-24 | 2016-11-24 | CFG inspection bearing capacity loading counterforce device |
Country Status (1)
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| CN (1) | CN206308720U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007790A (en) * | 2018-01-05 | 2018-05-08 | 沈阳建筑大学 | A kind of assembled girder steel monolithic stability experiment load loading device and method |
| CN108487280A (en) * | 2018-06-27 | 2018-09-04 | 上海城建市政工程（集团）有限公司 | A kind of counter-force static pressure type caisson sinking construction method |
| CN108842798A (en) * | 2018-06-27 | 2018-11-20 | 上海城建市政工程（集团）有限公司 | A kind of static pressure sinking construction method of prefabricated after-pouring formula open caisson |
| 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 |
| CN111894049A (en) * | 2020-07-24 | 2020-11-06 | 广东天信电力工程检测有限公司 | Loading device and test equipment for foundation pile compression-resistant static load test |
| CN112832306A (en) * | 2021-02-09 | 2021-05-25 | 中交路桥建设有限公司 | CFG pile bearing capacity detection structure and detection method |
| CN113718744A (en) * | 2021-08-24 | 2021-11-30 | 珠海市规划设计研究院 | Multi-pile composite foundation bearing capacity testing method |
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2016
- 2016-11-24 CN CN201621279798.9U patent/CN206308720U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007790A (en) * | 2018-01-05 | 2018-05-08 | 沈阳建筑大学 | A kind of assembled girder steel monolithic stability experiment load loading device and method |
| CN108487280A (en) * | 2018-06-27 | 2018-09-04 | 上海城建市政工程（集团）有限公司 | A kind of counter-force static pressure type caisson sinking construction method |
| CN108842798A (en) * | 2018-06-27 | 2018-11-20 | 上海城建市政工程（集团）有限公司 | A kind of static pressure sinking construction method of prefabricated after-pouring formula open caisson |
| CN108842798B (en) * | 2018-06-27 | 2021-10-19 | 上海城建市政工程（集团）有限公司 | Static pressure sinking construction method of prefabricated pouring type open caisson |
| CN108487280B (en) * | 2018-06-27 | 2023-03-28 | 上海城建市政工程（集团）有限公司 | Counter-force static pressure type open caisson sinking construction 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 |
| CN111894049A (en) * | 2020-07-24 | 2020-11-06 | 广东天信电力工程检测有限公司 | Loading device and test equipment for foundation pile compression-resistant static load test |
| CN112832306A (en) * | 2021-02-09 | 2021-05-25 | 中交路桥建设有限公司 | CFG pile bearing capacity detection structure and detection method |
| CN113718744A (en) * | 2021-08-24 | 2021-11-30 | 珠海市规划设计研究院 | Multi-pile composite foundation bearing capacity testing method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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