CN210104826U

CN210104826U - Uplift resistance device for cast-in-place pile

Info

Publication number: CN210104826U
Application number: CN201920898460.9U
Authority: CN
Inventors: 李保君; 徐伟
Original assignee: Hubei Jingzhiyuan Construction Engineering Quality Inspection Co Ltd
Current assignee: Hubei Jingzhiyuan Construction Engineering Quality Inspection Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-02-21
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a bored concrete pile resistance to plucking device, including test pile and strengthening rib, the inside of test pile has been pour the steel bar post, and the top welding of steel bar post has circular hoop, circular hoop and the punishment of steel bar post connection have the welding point of distribution, and the outer wall of circular hoop has the strengthening rib all around welded, the lower fixed disk welds in the end of strengthening rib, and runs through the lower extreme bottom of lower fixed disk has the power transmission screw rod, the both ends outer wall threaded connection of power transmission screw rod has the nut. The utility model has the advantages that: whole jack is the equipment that uplift power detected, and jack and stretch-draw oil pump cooperation are used, reach the function that detects bored concrete pile uplift power, only need assemble work during witnessed inspections, have shortened greatly and have detected the preparation time, and the device compares traditional test device simultaneously, makes the test pile reinforcing bar atress more even, and work is steady during stretch-draw, and it is big to provide the counter-force, can provide accurate test pile data effectively. Can be effectively applied to the uplift resistance detection of the cast-in-place pile.

Description

Uplift resistance device for cast-in-place pile

Technical Field

The utility model relates to a bored concrete pile detects technical field, specifically is bored concrete pile resistance to plucking device.

Background

The cast-in-place pile is formed by in-place hole forming and reinforced concrete pouring, the uplift pile is supported and pulled by steel bars, the pile uplift is realized by the friction between a pile body and soil, a field load test is required to be carried out to obtain the uplift pile, and the pile uplift resistance of the cast-in-place pile is required to be detected by a field tensile test.

The assembly welding of current bored concrete pile resistance to plucking device in use is loaded down with trivial details, and the installation degree of difficulty is big, and inconvenient user uses, and whole counter-force structure easily leads to the reinforcing bar atress inhomogeneous in the experimentation simultaneously, causes the reinforcing bar fracture, can't provide the experimental counter-force of requirement, and the real condition of reaction test pile can not be accomplished to the measured data, for this reason, we propose bored concrete pile resistance to plucking device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bored concrete pile resistance to plucking device to solve the current bored concrete pile resistance to plucking device in use assembly welding that proposes in the above-mentioned background art loaded down with trivial details, the installation degree of difficulty is big, and inconvenient user uses, and whole counter-force structure easily leads to the reinforcing bar atress inhomogeneous in the experimentation simultaneously, causes the reinforcing bar fracture, can't provide the experimental counter-force of requirement, and the problem of reaction test pile true condition can not be accomplished to the test data.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bored concrete pile resistance to plucking device, includes test pile and strengthening rib, the inside of test pile has been pour the reinforcing bar post, and the top welding of reinforcing bar post has circular hoop, circular hoop and reinforcing bar post junction have the welding point to distribute, and the outer wall of circular hoop has the strengthening rib all around to weld, lower fixed disk welds in the end of strengthening rib, and the lower extreme bottom of lower fixed disk runs through there is the biography power screw rod, the both ends outer wall threaded connection of biography power screw rod has the nut, and the nut is fixed with the gasket with one side that the lower fixed disk is connected, the top outer wall distribution of biography power screw rod has the upper fixed disk, and has distributed the center-penetrating jack in the lower extreme of upper fixed disk, the bottom of center-penetrating jack is connected with the girder, and the lower extreme both sides of girder settle has the.

Preferably, the lower fixed disk and the circular iron ring form a welding integrated structure through reinforcing ribs, and the reinforcing ribs are uniformly distributed between the lower fixed disk and the circular iron ring at equal intervals.

Preferably, the steel bar columns are uniformly distributed on the periphery of the outer wall of the circular iron ring at equal intervals, and the steel bar columns and the test piles are vertically and vertically distributed.

Preferably, the auxiliary piles are symmetrically distributed along the vertical central axis of the main beam, and the penetrating jacks are distributed along the vertical central axis of the auxiliary piles.

Preferably, the side supports are uniformly distributed around the outer wall of the auxiliary pile, and the cross sections of the side supports are distributed in a triangular shape.

Preferably, the upper fixed disk and the lower fixed disk are symmetrically distributed along the center line of the force transmission screw rod, and the upper fixed disk and the lower fixed disk are of detachable structures through nuts and the force transmission screw rod.

Compared with the prior art, the beneficial effects of the utility model are that: whole jack and counterforce device are the equipment that the withdrawal resistance detected, use when jack and stretch-draw oil pump cooperation, exert the withdrawal resistance through the jack to the test pile, reach the function that detects bored concrete pile withdrawal resistance, can carry out welded fastening work in advance to test pile reinforcing bar and lower fixed disk in the experiment earlier, can carry out many test pile top fixed work simultaneously, the field detection time measuring only need assemble work, the detection preparation time has been shortened greatly, the device compares traditional test device simultaneously, it is more even to make test pile reinforcing bar atress, the job stabilization during stretch-draw, it is big to provide the counterforce, can provide accurate test pile data effectively, can effectively be applied to this bored concrete pile withdrawal resistance and detect.

Drawings

FIG. 1 is a schematic front view of the present invention;

fig. 2 is the schematic view of the structure of the lower fixing tray of the present invention.

In the figure: 1. pile testing; 2. a lower fixed disc; 3. reinforcing ribs; 4. a circular iron ring; 5. a steel bar column; 6. a welding point; 7. a main beam; 8. auxiliary piles; 9. a side bracket; 10. a force transmission screw rod; 11. a center-penetrating jack; 12. an upper fixed disc; 13. a gasket; 14. and (4) a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a cast-in-place pile pulling-resistant device comprises a test pile 1, a lower fixed disk 2, reinforcing ribs 3, a circular iron ring 4, a steel bar column 5, welding points 6, a main beam 7, an auxiliary pile 8, a side bracket 9, force transmission screw rods 10, a penetrating jack 11, an upper fixed disk 12, gaskets 13 and screw caps 14, wherein the steel bar column 5 is poured inside the test pile 1, the circular iron ring 4 is welded at the top end of the steel bar column 5, the welding points 6 are distributed at the connecting position of the circular iron ring 4 and the steel bar column 5, the reinforcing ribs 3 are welded around the outer wall of the circular iron ring 4, the lower fixed disk 2 is welded at the tail end of the reinforcing ribs 3, the force transmission screw rods 10 penetrate through the bottom of the lower end of the lower fixed disk 2, the screw caps 14 are in threaded connection with the outer walls of two ends of the force transmission screw rods 10, the gaskets 13 are fixed at one side of the screw caps 14 connected with the lower fixed disk 2, the bottom of the penetrating jack 11 is connected with a main beam 7, auxiliary piles 8 are arranged on two sides of the lower end of the main beam 7, and side brackets 9 are fixed on the periphery of the lower end of each auxiliary pile 8.

In the above scheme, the whole center-penetrating jack 11 is the equipment for detecting the uplift resistance, when the center-penetrating jack 11 is used in cooperation with a tensioning oil pump, the power for tensioning and jacking is provided by the high-pressure oil of the tensioning oil pump, the function of detecting the uplift resistance of the cast-in-place pile is achieved by checking the injection pressure of the high-pressure oil, the center-penetrating jack is compact in structure, stable in work during tensioning, high in oil pressure and large in tensioning force, and can be effectively applied to the uplift resistance detection of the cast-in-place pile, meanwhile, the main beam 7 is used as a supporting structure of the whole equipment and made of a stainless steel beam, the rigidity and the deformation are high, the auxiliary pile 8 supports and lifts the main beam 7, the whole supporting structure is distributed in an I shape, and the follow-up test can be effectively used.

Specifically, lower fixed disk 2 passes through strengthening rib 3 and circular hoop 4 constitution welding integral structure, and 3 equidistance evenly distributed of strengthening rib are between lower fixed disk 2 and circular hoop 4, whole lower fixed disk 2 is as the basis stop gear between reinforcing bar post 5 and the test pile 1, it is a plurality of regions to separate 2 inboard of lower fixed disk through strengthening rib 3, can effectively guarantee the outer wall of many reinforcing bar posts 5 welding at circular hoop 4, be convenient for follow-up bored concrete pile resistance to plucking test of carrying on.

Concrete, 5 equidistance evenly distributed of steel bar post are around the outer wall of circular hoop 4, and are vertical form distribution between steel bar post 5 and the test pile 1, carry out erection joint through pouring between steel bar post 5 and the test pile 1, and its intensity is high, and steel bar post 5 is difficult for droing to whole when the tensile test, its pulling force is vertical upwards, guarantees to detect the accuracy of numerical value.

Specifically, auxiliary pile 8 is along the vertical axis symmetric distribution of girder 7, and punch jack 11 is along the vertical axis department distribution of auxiliary pile 8, whole punch jack 11 is the equipment that withdrawal resistance detected, use when punch jack 11 and stretch-draw oil pump cooperation, the power of stretch-draw and back jack is provided by the high pressure oil of stretch-draw oil pump, through the injection pressure of inspection high pressure oil, reach the function that detects the withdrawal resistance of bored concrete pile and detect, and punch jack compact structure, during stretch-draw steady operation, the oil pressure is high, the tension is big, can effectively be applied to this withdrawal resistance of bored concrete pile and detect.

It is specific, collateral branch frame 9 is along auxiliary pile 8's outer wall evenly distributed all around, and collateral branch frame 9's cross-section is three horn shapes and distributes, girder 7 is as the bearing structure of whole equipment, adopt the stainless steel girder steel to make, its rigidity is strong, deformation dynamic height, auxiliary pile 8 supports girder 7 and lifts up, make whole bearing structure be "worker" word form and distribute, guarantee the stability of whole structure, collateral branch frame 9 can effectively improve the area of contact on auxiliary pile 8 and ground, carry out the side position to auxiliary pile 8 and support.

Specifically, the upper fixed disk 12 and the lower fixed disk 2 are symmetrically distributed along the central line of the force transmission screw rod 10, the upper fixed disk 12 and the lower fixed disk 2 are of a detachable structure through the screw cap 14 and between the force transmission screw rod 10, the lower fixed disk 2 and the test pile 1 are welded and fixed, the upper fixed disk 12 fixes the center penetrating jack 11 at the lower end, when the center penetrating jack 11 upwards applies supporting force, the upper fixed disk 12 applies upward pulling force to the lower fixed disk 2 through the force transmission screw rod 10, and the rationality of the pile filling resistance test of the whole device is guaranteed.

The working principle is as follows: for the cast-in-place pile pulling-resistant device, firstly, a lower fixing disc 2 is placed at the top of a test pile 1, a steel bar column 5 in the test pile 1 is welded on the outer wall of a circular iron ring 4 in the lower fixing disc 2, meanwhile, the whole lower fixing disc 2 is used as a basic limiting mechanism between the steel bar column 5 and the test pile 1, the inner side of the lower fixing disc 2 is divided into a plurality of areas through a reinforcing rib 3, a gasket 13 with the diameter larger than the gap width between the reinforcing rib 3 and the reinforcing rib 3 is placed at the bottom of the lower fixing disc 2 by a user, a force transmission screw 10 is penetrated through the gasket 13, the gasket 13 and the lower fixing disc 2 are fixed through a screw cap 14, then, an upper fixing disc 12 is placed at the top of a piercing jack 11, the gasket 13 and the upper fixing disc 12 are fixed through the nut 14, then the user uses the piercing jack 11 and the tensioning jack in a matched mode, and, the function of detecting the uplift resistance of the cast-in-place pile is achieved by checking the injection pressure of high-pressure oil, and finally, a user records detection data, so that the using process of the whole uplift resistance device of the cast-in-place pile is completed.

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

1. The utility model provides a bored concrete pile resistance to plucking device, includes test pile (1) and strengthening rib (3), its characterized in that: the test pile is characterized in that a steel bar column (5) is poured inside the test pile (1), a circular iron ring (4) is welded at the top end of the steel bar column (5), welding points (6) are distributed at the joint of the circular iron ring (4) and the steel bar column (5), reinforcing ribs (3) are welded around the outer wall of the circular iron ring (4), a lower fixed disc (2) is welded at the tail end of each reinforcing rib (3), a force transmission screw (10) penetrates through the bottom of the lower end of the lower fixed disc (2), nuts (14) are in threaded connection with the outer walls of the two ends of the force transmission screw (10), a gasket (13) is fixed on one side, connected with the lower fixed disc (2), an upper fixed disc (12) is distributed on the outer wall of the top of the force transmission screw (10), a penetrating jack (11) is distributed in the middle of the lower end of the upper fixed disc (12), and a main beam (7, auxiliary piles (8) are arranged on two sides of the lower end of the main beam (7), and side supports (9) are fixed on the periphery of the lower end of each auxiliary pile (8).

2. A cast-in-place pile uplift device according to claim 1, wherein: the lower fixed disk (2) and the circular iron ring (4) form a welding integrated structure through the reinforcing ribs (3), and the reinforcing ribs (3) are uniformly distributed between the lower fixed disk (2) and the circular iron ring (4) at equal intervals.

3. A cast-in-place pile uplift device according to claim 1, wherein: the steel bar columns (5) are uniformly distributed on the periphery of the outer wall of the circular iron ring (4) at equal intervals, and the steel bar columns (5) and the test piles (1) are vertically and vertically distributed.

4. A cast-in-place pile uplift device according to claim 1, wherein: the auxiliary piles (8) are symmetrically distributed along the vertical central axis of the main beam (7), and the penetrating jacks (11) are distributed along the vertical central axis of the auxiliary piles (8).

5. A cast-in-place pile uplift device according to claim 1, wherein: the side supports (9) are uniformly distributed around the outer wall of the auxiliary pile (8), and the cross sections of the side supports (9) are distributed in a triangular shape.

6. A cast-in-place pile uplift device according to claim 1, wherein: the upper fixed disk (12) and the lower fixed disk (2) are symmetrically distributed along the center line of the force transmission screw (10), and the upper fixed disk (12) and the lower fixed disk (2) are both in detachable structures through the screw cap (14) and the force transmission screw (10).