CN210737629U - Anti-floating pile variable-diameter vertical load detection device - Google Patents
Anti-floating pile variable-diameter vertical load detection device Download PDFInfo
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- CN210737629U CN210737629U CN201921391890.8U CN201921391890U CN210737629U CN 210737629 U CN210737629 U CN 210737629U CN 201921391890 U CN201921391890 U CN 201921391890U CN 210737629 U CN210737629 U CN 210737629U
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Abstract
The utility model provides an anti-floating pile variable diameter vertical load detection device, characterized by that, which relates to the technical field of anti-floating pile quality detection: the device comprises a supporting base plate, a through jack, a foundation beam, a support, a steel cable and a hydraulic control system; the top surface of the supporting base plate is uniformly provided with 8-36 step holes at intervals in a surrounding manner, the step surfaces in the step holes are respectively provided with a feed-through pressure sensor, the top surfaces of the feed-through pressure sensors are respectively provided with a feed-through jack, the feed-through jacks are respectively connected with a hydraulic control system in a corresponding control manner, the central position of the bottom surface of the supporting base plate is provided with a bracket, the bottom surface of the bracket is correspondingly connected with the top surface of a foundation beam, the foundation beam is arranged right above the anti-floating pile through two supports, and the axis of the anti-floating pile is correspondingly superposed with the axis of the supporting base plate; the utility model discloses the problem of traditional detection method testing result distortion has effectively been solved.
Description
Technical Field
The utility model belongs to the technical field of anti floating pile quality testing technique and specifically relates to a vertical load detection device of anti floating pile variable diameter is related to.
Background
As is known, with the rapid development of underground space development and utilization in the building industry, more and more floating loads are borne by buildings, in order to counteract the effect of the floating loads in engineering, an anti-floating pile foundation is arranged underground, and the pile bearing vertical anti-floating is called as an anti-floating pile; in engineering construction, the bearing capacity of the anti-floating pile is an important technical index for controlling engineering quality, accurate test of the bearing capacity of a single pile plays an important role in various building foundation designs, even ground structure designs, safety, economy and the like of the anti-floating pile, and vertical anti-floating pile static load test detection is a method for carrying out test detection on the anti-floating pile in engineering so as to determine the vertical anti-floating limit bearing capacity of the anti-floating pile and judge whether the vertical anti-floating bearing capacity meets design requirements or not; the traditional detection method is that after steel bars are welded to lengthen main reinforcements of a steel bar cage in an anti-floating pile, the main reinforcements are symmetrically wound on a supporting force transmission base plate, and then the supporting force transmission base plate is jacked by a hydraulic system, so that the main reinforcements of the anti-floating pile cannot be vertical when being stretched, the tension is uneven, the force and the displacement borne by each steel bar in the anti-floating pile have the leading and lagging phenomena in the load test and detection processes of the anti-floating pile, the stress and the deformation of each steel bar are inconsistent, and finally the detection value deviation of the anti-floating pile load test is overlarge or the experimental data is distorted; therefore, the anti-floating pile variable-diameter vertical load detection device used in the prior art is difficult to or cannot meet the design and use requirements.
Chinese patent (publication No. CN 104099955A) discloses a foundation pile vertical uplift detection connector, which makes a jack, a plurality of pull rods, a cylinder and a foundation pile sequentially and correspondingly connected, and although the stress strength of uplift equipment in an uplift pile test is increased to a certain extent, the patent cannot ensure that the stress of each pull rod is the same, i.e. the main steel bars in each pile are precisely stressed the same and synchronized; in addition, different cylinders need to be manufactured according to different pile diameters, the adaptability is single, and the cylinders are difficult to connect with the main reinforcement cage of the foundation pile in the actual use process.
Disclosure of Invention
In order to overcome the not enough among the background art, the utility model discloses an anti-floating pile variable diameter vertical load detection device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a variable-diameter vertical load detection device for an anti-floating pile comprises a supporting base plate, a through jack, a foundation beam, a support, a steel cable and a hydraulic control system; the top surface of the supporting base plate is uniformly provided with 8-36 step holes at intervals in a surrounding manner, the step surfaces in the step holes are respectively provided with a feed-through pressure sensor, the top surfaces of the feed-through pressure sensors are respectively provided with a feed-through jack, the feed-through jacks are respectively connected with a hydraulic control system in a corresponding control manner, the central position of the bottom surface of the supporting base plate is provided with a bracket, the bottom surface of the bracket is correspondingly connected with the top surface of a foundation beam, the foundation beam is arranged right above the anti-floating pile through two supports, and the axis of the anti-floating pile is correspondingly superposed with the axis of the supporting base plate; one end of the steel cable penetrates through the center-penetrating jack and the center-penetrating pressure sensor through the universal guide sleeve and is correspondingly and fixedly connected with a jacking mechanism of the center-penetrating jack, and the other end of the steel cable is correspondingly connected with the reinforcing steel bars in the anti-floating piles one by one; the bottom surface of the supporting base disc corresponds to each step hole and is provided with a universal guide sleeve, the top end of each universal guide sleeve is provided with a ball head and a chuck for locking the ball head, one end, far away from the ball head, of the chuck corresponds to the bottom surface of the supporting base disc in a fastening connection mode, the ball head and the chuck are provided with through holes corresponding to the center holes of the universal guide sleeves, and the through holes correspond to the step holes in a communicating mode.
Preferably, the steel cable and the anti-floating pile are correspondingly connected through a connecting piece.
Preferably, the supporting base plate is provided with an even number of step holes such as 8, 12, 16, 20 or 26 and the like, and the penetrating jacks correspond to the step holes one by one.
Preferably, the center-penetrating jacks are correspondingly controlled and connected with the hydraulic control system through electromagnetic valves.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a vertical load detection device of anti floating pile variable diameter, simple structure, easily assembly, manufacturing cost is lower, and application scope is wide, for example: the method is suitable for resisting floating of a large number of basements, resisting pulling of high-rise buildings, resisting pulling of offshore wharf platforms, anchor pile foundations of suspension bridges and cable-stayed bridges, pile foundations of large ship dock floors, anchor pile foundations in static load test piles and the like; the center-penetrating jacks are correspondingly controlled and connected with the hydraulic control system through electromagnetic valves, namely in the process that the steel cables are correspondingly connected with the anti-floating piles, the hydraulic control system can independently control the corresponding single center-penetrating jack, display the preload born by the corresponding center-penetrating jack through the center-penetrating pressure sensor and display the preload born by the corresponding center-penetrating jack through the center-penetrating pressure sensor so as to enable all the steel cables to bear the same preload, even if the anti-floating piles are stressed uniformly, the hydraulic control system can synchronously control all the center-penetrating jacks to lift after the test begins; the bottom surface of the supporting base plate is provided with a universal guide sleeve corresponding to each step hole, the top end of each universal guide sleeve is provided with a ball head, and a chuck for locking the ball head, namely the universal guide sleeve can rotate universally to correspond to the interference of the steel cable adjacent to the foundation beam and the correction of the center line of the center penetrating jack deviated from the steel cable and the steel bar in the anti-floating pile, so that the interference influence of the foundation beam on the steel cable adjacent to the foundation beam when the pile diameter of the anti-floating pile is smaller is effectively avoided.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the universal guide sleeve.
In the figure: 1. supporting the base plate; 2. a center-penetrating jack; 3. a feed-through pressure sensor; 4. a bracket; 5. a foundation beam; 6. a support; 7. a steel cord; 8. a connecting member; 9. anti-floating piles; 10. a universal guide sleeve; 11. a hydraulic control system; 12. a ball head; 13. a chuck.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
With reference to the attached figures 1-2, the method for detecting the variable-diameter vertical load of the anti-floating pile comprises the following steps:
① selecting proper foundation beam 5 according to the maximum design vertical load limit of the anti-floating pile 9, erecting the foundation beam 5 on the anti-floating pile 9, and making the foundation beam 5 and the anti-floating pile 9 have a certain distance;
②, mounting the supporting base plate 1 on the foundation beam 5, and making the axis of the supporting base plate 1 and the axis of the anti-floating pile 9 correspondingly coincide;
③ a plurality of feed-through pressure sensors 3 and feed-through jacks 2 corresponding to the feed-through pressure sensors one by one are arranged in the supporting base disc 1, a universal guide sleeve 10 is arranged at the bottom of the supporting base disc corresponding to each feed-through jack, and the feed-through jacks 2 are correspondingly controlled and connected with the hydraulic control system 11;
④ the jacking mechanism of the jack 2 is correspondingly connected with the steel bar in the anti-floating pile 9 by the steel cable 7 passing through the universal guide sleeve 10;
⑤ operating the hydraulic control system 11 to control the single through jacks 2 one by one, and displaying the preload born by the corresponding through jack 2 through the through pressure sensor 3, so that all the steel cables 7 have the same pretightening force which is less than 5 per mill of the total load;
the first embodiment is as follows: all the penetrating jacks 2 are controlled by operating the hydraulic control system 11, so that the jacking mechanisms of all the penetrating jacks 2 have certain preset displacement, the preloading born by the corresponding penetrating jacks 2 is displayed by the penetrating pressure sensors 3, and the displacement of the jacking mechanisms of the corresponding penetrating jacks 2 is adjusted according to the pressure value displayed by the pressure sensors 3, so that all the steel cables 7 are subjected to the same pretightening force;
example two: the hydraulic control system 11 is operated to control the single through jack 2, and the through pressure sensor 3 displays the preload born by the corresponding through jack 2, so that all the through jacks 2 gradually have the same preload, and all the steel cables 7 are subjected to the same preload;
⑥ the hydraulic control system 11 is operated to control the center-penetrating jack 2, so that the center-penetrating jack 2 is synchronously jacked, the reinforcing steel bars of the anti-floating pile are subjected to uplift force in the same amount, and then the anti-floating pile 9 can be subjected to vertical load real-time uplift force detection under the action of the lifting force of the jack, and the maximum bearing capacity and the mechanical parameters of the anti-floating pile 9 can be accurately detected.
The diameter-variable detection device used in the method for detecting the diameter-variable vertical load of the anti-floating pile comprises a supporting base plate 1, a through jack 2, a foundation beam 5, a support 6, a steel cable 7 and a hydraulic control system 11; 8-36 step holes are uniformly and annularly arranged on the top surface of the supporting base plate 1 at intervals, the step surfaces in the step holes are respectively provided with a feed-through pressure sensor 3, and the top surface of each feed-through pressure sensor 3 is provided with a feed-through jack 2; according to the requirement, the supporting base plate 1 is provided with an even number of step holes such as 8, 12, 16, 20 or 26, namely the supporting base plate 1 is correspondingly provided with an even number of penetrating jacks 2 such as 8, 12, 16, 20 or 26, so that sufficient power can be provided for the test; the center-penetrating jacks 2 are correspondingly controlled and connected with a hydraulic control system 11, a bracket 4 is arranged at the center of the bottom surface of the supporting base plate 1, the bottom surface of the bracket 4 is correspondingly connected with the top surface of a foundation beam 5, the foundation beam 5 is arranged right above the anti-floating pile 9 through two supports 6, and the axis of the anti-floating pile 9 is correspondingly superposed with the axis of the supporting base plate 1; one end of the steel cable 7 penetrates through the center-penetrating jack 2 and the center-penetrating pressure sensor 3 through the universal guide sleeve 10 to be correspondingly and fixedly connected with a jacking mechanism of the center-penetrating jack 2, and the other end of the steel cable 7 is correspondingly connected with the steel bars in the anti-floating piles 9 one by one; according to the requirements, the steel cable 7 is correspondingly connected with the anti-floating pile 9 through the connecting piece 8, compared with the traditional mode of welding connection by steel bars, the construction is simple, the working efficiency is improved, and meanwhile, the influence caused by the test result due to the fact that the welding strength is different from the corresponding strength is avoided;
in addition, the penetrating jacks 2 are correspondingly controlled and connected with the hydraulic control system 11 through electromagnetic valves, namely in the process that the steel cable 7 is correspondingly connected with the anti-floating pile 9, the hydraulic control system 11 can independently control the corresponding single penetrating jack 2, and the pre-load borne by the corresponding penetrating jack 2 is displayed through the penetrating pressure sensor 3, so that all the steel cables 7 are subjected to the same pre-load force, and even if the anti-floating pile 9 is uniformly stressed, the hydraulic control system 11 can synchronously control all the penetrating jacks 2 to lift after the test is started; the top surface of the supporting base disc 1 is provided with a level gauge, so that an operator can conveniently observe whether the supporting base disc 1 is in a horizontal state or not, and the phenomenon that the center-penetrating jack 2 generates inclined drawing force for resisting the floating pile 9 due to the inclination of the supporting base disc 1 is prevented, and the detection result is distorted; the bottom surface of the supporting base disc 1 is provided with a universal guide sleeve 10 corresponding to each step hole, the top end of each universal guide sleeve 10 is provided with a ball head 12 and a chuck 13 used for locking the ball head 12, one end, far away from the ball head 12, of each chuck 13 is correspondingly and tightly connected with the bottom surface of the supporting base disc 1, each ball head 12 and each chuck 13 are provided with a through hole corresponding to a central hole of each universal guide sleeve 10, and the through holes are correspondingly communicated with the step holes, namely, the universal guide sleeves 10 can rotate in a universal mode, so that interference is generated between steel ropes 7 adjacent to the foundation beam 5, and correction when steel bars and the steel ropes 7 in the anti-floating piles deviate from the central line of the center penetrating jack 2 is performed correspondingly, namely, the paths of the steel ropes 7 can be changed through the universal guide sleeves 10.
Implement anti-floating pile variable diameter vertical load detection device, during the use with anti-floating pile 9 with support all punching jacks 2 on the foundation plate 1 and correspond through cable wire 7 and be connected, make all punching jacks 2 correspond the control connection through the solenoid valve with hydraulic control system 11, earlier through the corresponding single punching jack 2 of hydraulic control system 11 independent control, and show the preload that corresponding punching jack 2 bore through punching formula pressure sensor 3, in order to reach and make all cable wires 7 all receive the same pretightning force, then carry out the jacking through all punching jacks 2 of hydraulic control system 11 synchro control, can carry out the detection of the 9 vertical loads of anti-floating pile.
The part of the utility model not detailed is prior art.
Claims (4)
1. The utility model provides an anti-floating pile becomes vertical load detection device of diameter which characterized by: comprises a supporting base plate (1), a through jack (2), a foundation beam (5), a support (6), a steel cable (7) and a hydraulic control system (11); the supporting base plate is characterized in that 8-36 step holes are uniformly and annularly arranged on the top surface of the supporting base plate (1) at intervals, the step surfaces in the step holes are respectively provided with a feed-through pressure sensor (3), the top surfaces of the feed-through pressure sensors (3) are respectively provided with a feed-through jack (2), the feed-through jacks (2) are respectively in corresponding control connection with a hydraulic control system (11), a bracket (4) is arranged at the central position of the bottom surface of the supporting base plate (1), the bottom surface of the bracket (4) is correspondingly connected with the top surface of a basic beam (5), the basic beam (5) is arranged right above an anti-floating pile (9) through two supports (6), and the axis of the anti-floating pile (9) is correspondingly superposed with the axis of the supporting base plate (1); one end of the steel cable (7) penetrates through the center-penetrating jack (2) and the center-penetrating pressure sensor (3) through the universal guide sleeve (10) to be correspondingly and fixedly connected with a jacking mechanism of the center-penetrating jack (2), and the other end of the steel cable (7) is correspondingly connected with the steel bars in the anti-floating piles (9) one by one; the bottom face of supporting base plate (1) corresponds every step hole and all is equipped with a universal guide pin bushing (10), the top of universal guide pin bushing (10) is equipped with bulb (12) to and chuck (13) that are used for locking bulb (12), the one end that bulb (12) were kept away from in chuck (13) corresponds fastening connection with the bottom face of supporting base plate (1), and bulb (12) and chuck (13) all are equipped with the through-hole corresponding with universal guide pin bushing (10) centre bore, and this through-hole corresponds the intercommunication with the step hole.
2. The anti-floating pile variable-diameter vertical load detection device as claimed in claim 1, wherein: the steel cable (7) is correspondingly and firmly connected with the anti-floating pile (9) through a connecting piece (8).
3. The anti-floating pile variable-diameter vertical load detection device as claimed in claim 1, wherein: the supporting base plate (1) is provided with 8, 12, 16, 20 or 26 even step holes and the penetrating jacks (2) corresponding to the step holes one by one.
4. The anti-floating pile variable-diameter vertical load detection device as claimed in claim 1, wherein: the center-penetrating jacks (2) are correspondingly controlled and connected with the hydraulic control system (11) through electromagnetic valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391890.8U CN210737629U (en) | 2019-08-26 | 2019-08-26 | Anti-floating pile variable-diameter vertical load detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391890.8U CN210737629U (en) | 2019-08-26 | 2019-08-26 | Anti-floating pile variable-diameter vertical load detection device |
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| Publication Number | Publication Date |
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| CN210737629U true CN210737629U (en) | 2020-06-12 |
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| CN201921391890.8U Active CN210737629U (en) | 2019-08-26 | 2019-08-26 | Anti-floating pile variable-diameter vertical load detection device |
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