CN113882442A - Device for connecting loading main beam and counter-force pile in foundation pile static load test - Google Patents
Device for connecting loading main beam and counter-force pile in foundation pile static load test Download PDFInfo
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- CN113882442A CN113882442A CN202111369089.5A CN202111369089A CN113882442A CN 113882442 A CN113882442 A CN 113882442A CN 202111369089 A CN202111369089 A CN 202111369089A CN 113882442 A CN113882442 A CN 113882442A
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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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Abstract
The invention provides a connecting device for a loading main beam and a counterforce pile in a foundation pile static load test, and relates to the field of pile foundation vertical uplift static load tests. This stake static test loading girder and counter-force pile connecting device, including the foundation pile, the upper end of foundation pile extends there are a plurality of main muscle, fixedly connected with cohesion device on the main muscle, the upper end of cohesion device is provided with the lower plate, the top of lower plate is provided with the punch holder, be provided with the girder between punch holder and the lower plate, cohesion device includes the casing, the inside of casing is provided with down cavity and epicoele, is upper and lower distribution, and the lower extreme of casing is provided with a plurality of bell mouths, cavity under the bell mouth is connected, the inside of bell mouth is provided with two grip blocks, the lateral wall of grip block is the conical surface to with the inner wall sliding fit of bell mouth, two the grip block cohesion is at main muscle. Through the mode of centre gripping can the high-speed joint foundation pile, and do not handle the foundation pile.
Description
Technical Field
The invention relates to the technical field of pile foundation vertical uplift static load tests, in particular to a connecting device of a loading main beam and a counter-force pile in a foundation pile static load test.
Background
The static load test of the pile foundation is a technology for detecting the bearing capacity of the pile foundation in engineering. In the aspect of determining the ultimate bearing capacity of the single pile, the method is the most accurate and reliable test method, and is used for judging whether a certain dynamic load test method is mature or not, and the comparison error of the static load test result is used as the basis. Therefore, the single pile static load test is listed as the first place in each foundation design and treatment specification.
In the test of foundation piles, the resistance to uplift of the foundation pile is generally performed. And connecting the foundation piles and the main beams for testing by adopting the connecting device. The main reinforcement extending from the upper end of the foundation pile is fixed on the connecting device through a threaded connection or a welding mode. This operation is troublesome for the subsequent construction, such as lengthening the main reinforcement. And by adopting the connection mode, the connection and fixation mode for testing has complicated steps, which is not beneficial to improving the test speed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a connecting device of a loading main beam and a counter-force pile in a foundation pile static load test, and solves the problems of complexity and low speed of test connection.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the device for connecting the loading main beam and the counter-force pile in the foundation pile static load test comprises a foundation pile, wherein a plurality of main ribs extend from the upper end of the foundation pile, a cohesion device is fixedly connected onto the main ribs, a lower clamping plate is arranged at the upper end of the cohesion device, an upper clamping plate is arranged above the lower clamping plate, a main beam is arranged between the upper clamping plate and the lower clamping plate, the cohesion device comprises a shell, a lower cavity and an upper cavity are arranged inside the shell and are distributed vertically, a plurality of tapered holes are formed in the lower end of the shell, the tapered holes are connected with the lower cavity, two clamping blocks are arranged inside the tapered holes, the side wall of each clamping block is a conical surface and is in sliding fit with the inner wall of each tapered hole, and the two clamping blocks are cohesive on the main ribs;
a spring is arranged at the upper end of the clamping block, a lifting plate capable of sliding up and down is arranged in the lower cavity, a rope is fixedly connected to the edge of the upper end of the clamping block, and the other end of the rope is fixedly connected with the lower section of the lifting plate;
the upper end of the shell is provided with an opening, the opening is communicated with the upper cavity, the middle of the lower end of the lower clamping plate is rotatably connected with a connecting rod, the lower end of the connecting rod is fixedly connected with a clamping plate, and the clamping plate and the opening are consistent in outline.
Preferably, two be provided with the flexure strip between the grip block, the flexure strip is the arc, the half slot inner wall of grip block inside cooperation owner muscle is provided with anti-skidding line.
Preferably, a gasket is placed at the upper end of the clamping block, the lower end of the spring abuts against the upper end of the gasket, and the upper end of the spring abuts against the upper wall of the lower chamber.
Preferably, the edge of the lifting plate is provided with a notch, the side wall of the lower chamber is provided with a slide rail, and the notch is in sliding fit with the slide rail.
Preferably, a rotating member is arranged in the middle of the upper chamber, and the lower end of the rotating member extends to the lower chamber and is in threaded fit with the lifting plate.
Preferably, the rotating part comprises a rotating disc, a plurality of through holes are formed in the rotating disc at equal angles, a screw rod is fixedly connected to the middle of the lower end of the rotating disc, and the screw rod is in threaded fit with the lifting plate.
Preferably, the middle part of the connecting rod is provided with a section of regular hexagon clamping section.
Preferably, the both ends of lower plate and punch holder all are provided with a plurality of bolts, the girder passes through the bolt fastening between lower plate and the punch holder.
Preferably, the upper end of the main beam is provided with a rubber pad, and the upper end of the rubber pad is in contact with the lower end face of the upper clamping plate.
(III) advantageous effects
The invention provides a connecting device for a loading main beam and a counterforce pile in a foundation pile static load test. The method has the following beneficial effects:
1. according to the invention, the clamping piece is adopted to embrace the main rib, and the clamping piece tightly embraces the main rib under the action of the spring, the tapered hole and the friction force between the clamping piece and the main rib when the clamping piece moves upwards relative to the main rib, so that the fixation is realized, and the mode is simple.
2. According to the invention, when the cohesion device is separated from the main reinforcement, the lifting plate is lifted through the rotating piece, so that the clamping piece is lifted, the clamping block is separated from cohesion of the main reinforcement, and the cohesion device and the foundation pile are quickly separated by the mode.
3. According to the invention, the main beam and the embracing device are fixedly connected through the connecting rod and the clamping plate, the clamping plate and the embracing device can be connected by rotating the connecting rod, and the operation is simple.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a side schematic view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic partial cross-sectional view taken at B-B of FIG. 3;
FIG. 5 is an exploded view of the embracing means and lower jaw of the present invention;
fig. 6 is a perspective view of the rotating member of the present invention.
Wherein, 1, foundation pile; 2. a cohesion device; 3. a lower splint; 4. a main beam; 5. a rubber pad; 6. an upper splint; 7. a bolt; 8. a main rib; 9. a connecting rod; 10. a housing; 11. a clamping block; 12. an elastic sheet; 13. a spring; 14. a lifting plate; 15. a rotating member; 16. a gasket; 17. a rope; 18. clamping a plate; 19. an opening; 151. a screw; 152. a through hole; 153. and (6) rotating the disc.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 6, an embodiment of the present invention provides a foundation pile static load test loading main beam and reaction pile connecting device, including a foundation pile 1, where the foundation pile 1 is a tested building body, a plurality of main bars 8 extend from an upper end of the foundation pile 1, a steel bar keel needs to be arranged in the foundation pile 1 during pouring, and the main bars 8 are steel bars extending from the steel bar keel and are used for connecting with the upper end of the foundation pile 1, where the construction is usually made of deformed steel bars, a clasping device 2 is fixedly connected to the main bars 8, and the clasping device 2 is fixed to the main bars 8 and is used for testing.
The upper end of cohesion device 2 is provided with lower plate 3, the top of lower plate 3 is provided with punch holder 6, be provided with girder 4 between punch holder 6 and the lower plate 3, be used for the test, only show part in the picture, the both ends of lower plate 3 and punch holder 6 all are provided with a plurality of bolts 7, girder 4 is fixed in between lower plate 3 and the punch holder 6 through bolt 7, the quantity of bolt 7 can increase and decrease according to the demand of reality, the upper end of girder 4 is provided with rubber pad 5, the upper end of rubber pad 5 and the lower terminal surface contact of punch holder 6, at the in-process of test, girder 4 has the atress to take place deformation, make contact insufficient between girder 4 and the punch holder 6, cause girder 4 stress concentration easily, girder 4 takes place to destroy, and the rubber pad 5 that sets up can take place to deform at girder 4, the dispersed stress, reduce the probability of stress concentration.
The holding device 2 comprises a shell 10, the shell 10 is cylindrical, a lower chamber and an upper chamber are arranged in the shell 10 and are distributed up and down, a plurality of tapered holes are formed in the lower end of the shell 10 and are connected with the lower chamber, two clamping blocks 11 are arranged in the tapered holes and are combined to form a complete frustum body, the side walls of the clamping blocks 11 are conical surfaces and are in sliding fit with the inner walls of the tapered holes, the clamping blocks 11 slide upwards in the tapered holes, the two clamping blocks 11 are held on the main ribs 8 in a holding mode, an elastic sheet 12 is arranged between the two clamping blocks 11, the elastic sheet 12 is arc-shaped, when the two clamping blocks 11 slide upwards, the elastic sheet 12 acts to push the two clamping blocks 11 away along the radial direction of the main ribs 8, namely the two clamping blocks 11 do not hold the main ribs 8, otherwise the two clamping blocks 11 hold the main ribs 8, and the two clamping blocks 11 are close to each other and compressed by force, the inner wall of the semicircular groove of the clamping block 11 matched with the main rib 8 is provided with anti-slip lines, so that the axial friction force between the clamping block 11 and the main rib 8 is improved.
The upper end of grip block 11 is provided with spring 13, gasket 16 has been placed to the upper end of grip block 11, be connected between gasket 16 and the grip block 11, the lower extreme of spring 13 supports the upper end of gasket 16, avoid gasket 16 to shift, can fix gasket 16 at the lower extreme of spring 13, the upper end of spring 13 supports the upper wall of lower cavity, also can fix spring 13 at the upper wall of lower cavity, under the effect of spring 13, grip block 11 is restricted in the lower part of bell mouth, the inside of lower cavity is provided with gliding lifter plate 14 from top to bottom, the upper end edge fixed connection rope 17 of grip block 11, the other end of rope 17 and the lower terminal surface fixed connection of lifter plate 14, lifter plate 14 rises, draw grip block 11 to move up through rope 17, spring 13 is pressurized simultaneously, the storage elastic potential energy.
Go up the middle part of cavity and be provided with rotation piece 15, the lower extreme of rotating piece 15 extends to cavity down, and with lifter plate 14 screw-thread fit, rotation piece 15 includes rolling disc 153, the first-class angle that waits on rolling disc 153 is provided with a plurality of through-holes 152, be used for inserting the rotatory rolling disc 153 of instrument, the lower extreme middle part fixedly connected with screw rod 151 of rolling disc 153, screw rod 151 and lifter plate 14 screw-thread fit, along with rolling disc 153 drive screw rod 151 rotates, the lifter plate 14 of screw-thread fit with it rises or descends, the edge of lifter plate 14 is provided with the breach, the lateral wall of lower cavity is provided with the slide rail, breach and slide rail sliding fit, the setting of breach and slide rail prevents that lifter plate 14 from rotating along with screw rod 151 together, and can't reach the purpose that lifter plate 14 goes up and down.
The working principle is as follows: when in use, the cohesion device 2 is sleeved on the main bar 8 extending upwards from the foundation pile 1, the position of the main bar 8 corresponds to the clamping block 11 on the cohesion device 2, when the cohesion device 2 is sleeved, the upper end of the main bar 8 is propped against the clamping block 11, so that the clamping block 11 is upwards positioned, meanwhile, the elastic sheet 12 acts to separate the two clamping blocks 11, so that the main rib 8 extends into the space between the two clamping blocks 11, when the cohesion device 2 is lifted upwards, because axial friction force exists between the clamping blocks 11 and the main ribs 8, and the two clamping blocks 11 move downwards under the action of the spring 13 to embrace and tightly clamp the main ribs 8, when the embracing device 2 is connected with the lower clamping plate 3, the clamping plate 18 extends into the upper cavity through the opening 19, then, the clamping plate is clamped at the regular hexagon clamping section through a tool, and the connecting rod 9 is rotated, so that two ends of the clamping plate 18 are in contact with the upper wall of the upper chamber, and the test can be carried out at the moment;
after the test is finished, the rotating part 15 is rotated, so that the lifting plate 14 rises, the clamping blocks 11 are pulled by the ropes 17 to move upwards, the two clamping blocks 11 are released from the state of the clasping main ribs 8, the clasping device 2 can be taken down, and meanwhile, the lifting plate 14 needs to be reset.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. Foundation pile static test loading girder and reaction pile connecting device, including foundation pile (1), the upper end of foundation pile (1) is extended there are a plurality of main muscle (8), fixedly connected with cohesion device (2) are gone up in main muscle (8), the upper end of cohesion device (2) is provided with lower plate (3), the top of lower plate (3) is provided with punch holder (6), be provided with girder (4), its characterized in that between punch holder (6) and lower plate (3): the clasping device (2) comprises a shell (10), a lower chamber and an upper chamber are arranged in the shell (10) and are distributed up and down, a plurality of tapered holes are formed in the lower end of the shell (10), the tapered holes are connected with the lower chamber, two clamping blocks (11) are arranged in the tapered holes, the side walls of the clamping blocks (11) are conical surfaces and are in sliding fit with the inner walls of the tapered holes, and the two clamping blocks (11) are clasped on the main ribs (8);
a spring (13) is arranged at the upper end of the clamping block (11), a lifting plate (14) capable of sliding up and down is arranged in the lower chamber, a rope (17) is fixedly connected to the edge of the upper end of the clamping block (11), and the other end of the rope (17) is fixedly connected with the lower section of the lifting plate (14);
the upper end of casing (10) is provided with opening (19), cavity in opening (19) intercommunication, the lower extreme middle part of lower plate (3) rotates and is connected with connecting rod (9), the lower extreme fixedly connected with cardboard (18) of connecting rod (9), cardboard (18) and opening (19) contour are unanimous.
2. The foundation pile static test loading main beam and reaction pile connecting device according to claim 1, characterized in that: two be provided with elastic sheet (12) between grip block (11), elastic sheet (12) are the arc, the half slot inner wall of grip block (11) inside cooperation owner muscle (8) is provided with anti-skidding line.
3. The foundation pile static test loading main beam and reaction pile connecting device according to claim 1, characterized in that: a gasket (16) is placed at the upper end of the clamping block (11), the lower end of the spring (13) abuts against the upper end of the gasket (16), and the upper end of the spring (13) abuts against the upper wall of the lower cavity.
4. The foundation pile static test loading main beam and reaction pile connecting device according to claim 1, characterized in that: the edge of the lifting plate (14) is provided with a notch, the side wall of the lower cavity is provided with a slide rail, and the notch is in sliding fit with the slide rail.
5. The foundation pile static test loading main beam and reaction pile connecting device according to claim 1, characterized in that: the middle part of the upper chamber is provided with a rotating part (15), and the lower end of the rotating part (15) extends to the lower chamber and is in threaded fit with the lifting plate (14).
6. The foundation pile static test loading main beam and reaction pile connecting device according to claim 5, characterized in that: the rotating part (15) comprises a rotating disc (153), a plurality of through holes (152) are formed in the rotating disc (153) at equal angles, a screw rod (151) is fixedly connected to the middle of the lower end of the rotating disc (153), and the screw rod (151) is in threaded fit with the lifting plate (14).
7. The foundation pile static test loading main beam and reaction pile connecting device according to claim 1, characterized in that: the middle part of the connecting rod (9) is provided with a section of regular hexagon clamping section.
8. The foundation pile static test loading main beam and reaction pile connecting device according to claim 1, characterized in that: the two ends of the lower clamping plate (3) and the upper clamping plate (6) are respectively provided with a plurality of bolts (7), and the main beam (4) is fixed between the lower clamping plate (3) and the upper clamping plate (6) through the bolts (7).
9. The foundation pile static test loading main beam and reaction pile connecting device according to claim 1, characterized in that: the upper end of the main beam (4) is provided with a rubber pad (5), and the upper end of the rubber pad (5) is in contact with the lower end face of the upper clamping plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369089.5A CN113882442B (en) | 2021-11-18 | 2021-11-18 | Device for connecting loading main beam and counter-force pile in foundation pile static load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369089.5A CN113882442B (en) | 2021-11-18 | 2021-11-18 | Device for connecting loading main beam and counter-force pile in foundation pile static load test |
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| Publication Number | Publication Date |
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| CN113882442A true CN113882442A (en) | 2022-01-04 |
| CN113882442B CN113882442B (en) | 2022-12-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202925578U (en) * | 2012-11-26 | 2013-05-08 | 昆山市建设工程质量检测中心 | Rapid connecting piece for use in pile foundation static load detection |
| WO2014122583A1 (en) * | 2013-02-05 | 2014-08-14 | Sandvik Intellectual Property Ab | Device system and method for dynamic testing of ground support bolts anchor bolts or rock bolts |
| CN107012899A (en) * | 2017-06-08 | 2017-08-04 | 攀枝花天誉工程检测有限公司 | Foundation pile static loading test system |
| CN212612680U (en) * | 2020-07-03 | 2021-02-26 | 广州建设工程质量安全检测中心有限公司 | Connecting plate and uplift pile detection device for uplift force test |
| CN112454222A (en) * | 2021-02-04 | 2021-03-09 | 山东道智盛信息科技有限公司 | Fire hydrant promotes valve rod with add clamping apparatus |
-
2021
- 2021-11-18 CN CN202111369089.5A patent/CN113882442B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202925578U (en) * | 2012-11-26 | 2013-05-08 | 昆山市建设工程质量检测中心 | Rapid connecting piece for use in pile foundation static load detection |
| WO2014122583A1 (en) * | 2013-02-05 | 2014-08-14 | Sandvik Intellectual Property Ab | Device system and method for dynamic testing of ground support bolts anchor bolts or rock bolts |
| CN107012899A (en) * | 2017-06-08 | 2017-08-04 | 攀枝花天誉工程检测有限公司 | Foundation pile static loading test system |
| CN212612680U (en) * | 2020-07-03 | 2021-02-26 | 广州建设工程质量安全检测中心有限公司 | Connecting plate and uplift pile detection device for uplift force test |
| CN112454222A (en) * | 2021-02-04 | 2021-03-09 | 山东道智盛信息科技有限公司 | Fire hydrant promotes valve rod with add clamping apparatus |
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| Publication number | Publication date |
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| CN113882442B (en) | 2022-12-20 |
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