Hoop bearing capacity detection test device

Abstract

The utility model relates to a hoop bearing capacity detection test device, which comprises an upper hoop and a lower hoop which are arranged on a pile body, are spaced below the upper hoop and are provided with second lugs; the upper steel plate is mounted below the first lug; the lower steel plate is mounted on the second lug; the hydraulic jack is mounted on the lower steel plate, and the piston end of the hydraulic jack faces the upper steel plate and is provided with an anchor backing plate; the oil pump is provided with an oil way communicated with the hydraulic jack and a pressure gauge; the limiting hoop is mounted on the pile body and arranged between the upper hoop and the lower hoop; the first limiting shaft is fixed to the bottom face of the upper hoop and abuts against the lower side face of the limiting hoop. The first thin ring piece is placed on the upper side face of the limiting hoop, and the first limiting shaft penetrates into the first thin ring piece; one end of the first thin wire is fixed on the first thin ring sheet; and the first counterweight is fixed at the other end of the first thin wire and is suspended in the air. According to the utility model, whether the hoop slips or not can be observed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge bent cap construction field especially, relate to a clamp bearing capacity test device. BACKGROUND

[0002] As Chinese invention application publication number CN 104807622 A, a kind of test method for verifying bent cap clamp bearing capacity

[0003] Method, comprising the following construction steps: step one: clamp fastening buckle is placed in column, and one jack is placed in the both sides of clamp lower end, clamp and jack are placed with steel plate, jack and oil pump are connected;Step two: initially start oil pump, make jack and steel plate, clamp two ends closely contact together, at this time, oil pump starts to apply initial stress, so that the pressure gauge dial pressure value is 20% of theoretical value, after load is stable 1-2min, if clamp does not change, start to apply load evenly and slowly again.The method is not convenient to judge when clamp produces displacement, and pure naked eye observation is easy to misjudge, to affect detection result, need to re-detect, cause detection cost to rise. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a clamp bearing capacity test device, which can assist naked eye observation of whether clamp produces slip, so as to record pressure gauge reading in time.

[0005] To solve the above problems, a clamp bearing capacity test device is adopted, which comprises:

[0006] Upper clamp, which is installed on pile body, has first lug;

[0007] Lower clamp, which is installed on pile body, is spaced below upper clamp, and has second lug;

[0008] Upper steel plate, which is installed below first lug;

[0009] Lower steel plate, which is installed above second lug;

[0010] Hydraulic jack, which is installed on lower steel plate, has piston end towards upper steel plate and is installed with anchor pad;

[0011] Oil pump, which has oil circuit communication hydraulic jack, also has pressure gauge;

[0012] Limiting clamp, which is installed on pile body, is arranged between upper clamp and lower clamp;

[0013] First limiting shaft, which is fixed on the bottom surface of upper clamp, and is abutted on the lower side surface of limiting clamp;

[0014] The first thin ring piece is arranged on the upper side of the limiting hoop and is penetrated by the first limiting shaft;

[0015] The first thin wire is fixed at one end on the first thin ring piece;

[0016] The first counterweight is fixed at the other end of the first thin wire and is hung in the air.

[0017] With the structure, when the upper hoop slips, the first limiting shaft moves upward, the first thin ring piece is released from the limitation, the first counterweight falls, the operator can stop loading and record the current pressure gauge reading.

[0018] As a further improvement of the utility model, the bottom surface of the limiting hoop is fixed with a second limiting shaft, the second limiting shaft abuts against the upper surface of the lower hoop, the lower end of the second limiting shaft penetrates into a second thin ring piece, one end of a second thin wire is fixed on the second thin ring piece, and the other end of the second thin wire is fixed with a second counterweight.

[0019] With the structure, the slip of the lower hoop can also be conveniently detected.

[0020] As a further improvement of the utility model, the bottom end of the first limiting shaft is hemispherical.

[0021] With the structure, the bottom surface area of the hemisphere is small, and the response speed of the thin ring piece is faster after the slip.

[0022] As a further improvement of the utility model, the lower side of the upper hoop is welded with a first nut, and the upper end of the first limiting shaft is provided with threads to threadedly connect the first nut.

[0023] With the structure, the first limiting shaft can be finely adjusted up and down after being rotated.

[0024] As a further improvement of the utility model, the lower side of the limiting hoop is welded with a second nut, and the upper end of the second limiting shaft is provided with threads to threadedly connect the second nut.

[0025] With the structure, the second limiting shaft can be finely adjusted up and down after being rotated.

[0026] As a further improvement of the utility model, the upper hoop, the lower hoop and the limiting hoop are provided with level vials.

[0027] With the structure, whether the hoops are stably installed can be observed.

[0028] As a further improvement of the utility model, a first rectangular sleeve is sleeved on the first limiting shaft, a first measuring scale is inserted into the first rectangular sleeve, a first limiting bolt is threadedly connected to the side surface of the first rectangular sleeve, and the first limiting bolt abuts against the first measuring scale on the first limiting shaft.

[0029] With the structure, the first measuring scale can determine whether the upper hoop truly produces slip.

[0030] As a further improvement of the utility model, the second rectangular sleeve is sleeved on the second limiting shaft, the second measuring scale is inserted into the second rectangular sleeve, and the second limiting bolt abuts the second measuring scale on the second limiting shaft.

[0031] With the structure, the second measuring scale can determine whether the lower hoop truly produces slip.

[0032] As a further improvement of the utility model, the first lug and the second lug are prearranged with intervals.

[0033] With the structure, the steel plate can be prevented from expanding and being deformed and fractured when the bolt is tightened, and the intervals can serve as expansion joints. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 It is a structural schematic view of an embodiment.

[0035] Fig. 2 It is a partial structural schematic view of one side of an embodiment.

[0036] Fig. 3 It is a partial structural schematic view of the other side of an embodiment.

[0037] The figure legend is as follows: 1, upper hoop; 101, first lug; 2, lower hoop; 201, second lug; 3, upper steel plate; 4, lower steel plate; 5, hydraulic jack; 501, anchor pad; 6, oil pump; 601, pressure gauge; 7, limiting hoop; 8, first limiting shaft; 9, first thin ring piece; 10, first thin wire; 11, first counterweight; 12, second limiting shaft; 13, second thin ring piece; 14, second thin wire; 15, first nut; 16, second nut; 17, level bubble; 18, first rectangular sleeve; 19, first measuring scale; 20, second rectangular sleeve; 21, second measuring scale; 22, first limiting bolt; 23, second counterweight; 24, interval; 25, second limiting bolt. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0039] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the device or element having a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the utility model; the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] Embodiment 1

[0041] As Figs. 1-3 shown, a test device for bearing capacity of a hoop includes:

[0042] The upper hoop 1 is installed on the pile body, which has a first lug 101;

[0043] The lower hoop 2 is installed on the pile body and is spaced below the upper hoop 1, which has a second lug 201;

[0044] The upper steel plate 3 is installed below the first lug 101;

[0045] The lower steel plate 4 is installed above the second lug 201;

[0046] The hydraulic jack 5 is installed on the lower steel plate 4, the piston end of which faces the upper steel plate 3 and is provided with an anchor pad 501;

[0047] The oil pump 6 has an oil circuit connected to the hydraulic jack 5, and further has a pressure gauge 601;

[0048] The limiting hoop 7 is installed on the pile body and is arranged between the upper hoop 1 and the lower hoop 2;

[0049] The first limiting shaft 8 is fixed to the bottom surface of the upper hoop 1 and abuts against the lower side surface of the limiting hoop 7;

[0050] The first thin ring piece 9 is placed on the upper side surface of the limiting hoop 7 and is penetrated by the first limiting shaft 8;

[0051] The first thin line 10 is fixed to the first thin ring piece 9 at one end;

[0052] The first counterweight 11 is fixed at the other end of the first thin wire 10 and hangs in the air.

[0053] With such a structure, when the upper hoop 1 slips, the first limiting shaft 8 moves up, the first thin ring 9 is released from the limit, the first counterweight 11 falls, and the operator can stop loading and record the current pressure gauge 601 reading.

[0054] In this embodiment, the bottom surface of the limiting hoop 7 is fixed with a second limiting shaft 12, the second limiting shaft 12 abuts the upper surface of the lower hoop 2, the lower end of the second limiting shaft 12 penetrates into the second thin ring 13, one end of the second thin wire 14 is fixed on the second thin ring 13, and the other end of the second thin wire 14 is fixed with a second counterweight 23.

[0055] With such a structure, it is also convenient to detect the slip of the lower hoop 2.

[0056] In this embodiment, the bottom end of the first limiting shaft 8 is hemispherical.

[0057] With such a structure, the bottom surface area of the hemisphere is small, and after slipping, the response speed of the thin ring is faster.

[0058] In this embodiment, the lower side of the upper hoop 1 is welded with a first nut 15, and the upper end of the first limiting shaft 8 is provided with threads to threadedly connect the first nut 15.

[0059] With such a structure, the first limiting shaft 8 can be adjusted up and down after rotation.

[0060] In this embodiment, the lower side of the limiting hoop 7 is welded with a second nut 16, and the upper end of the second limiting shaft 12 is provided with threads to threadedly connect the second nut 16.

[0061] With such a structure, the second limiting shaft 12 can be adjusted up and down after rotation.

[0062] In this embodiment, the upper hoop 1, the lower hoop 2, and the limiting hoop 7 are installed with a level bubble 17.

[0063] With such a structure, it can be observed whether the hoop is installed stably.

[0064] In this embodiment, the first limiting shaft 8 is sleeved with a first rectangular sleeve 18, a first measuring scale 19 is inserted into the first rectangular sleeve 18, a first limiting bolt 22 is threadedly connected to the side surface of the first rectangular sleeve 18, and the first limiting bolt 22 abuts the first measuring scale 19 against the first limiting shaft 8.

[0065] With such a structure, the first measuring scale 19 can determine whether the upper hoop truly slips.

[0066] In the embodiment, the second limiting shaft 12 is sleeved with a second rectangular sleeve 20, the second measuring scale 21 is inserted into the second rectangular sleeve 20, and the second limiting bolt 25 is threadedly connected to the side surface of the second rectangular sleeve 20 and abuts against the second measuring scale 21 on the second limiting shaft 12.

[0067] With the structure, the second measuring scale 21 can determine whether the lower hoop actually slips.

[0068] In the embodiment, the first lug 101 and the second lug 201 are provided with a reserved interval 24.

[0069] With the structure, the deformation and fracture of the steel plate caused by the internal expansion of the steel plate during the tightening of the bolt can be avoided, and the reserved interval can act as a expansion joint.

[0070] Embodiment 2

[0071] ①In the test, the upper and lower hoops are used, the lower hoop is installed at a position 0.5 m away from the top beam of the pile, the upper hoop is installed at a position 1.5 m away from the top beam of the pile (the actual situation can be adjusted on site), and the tensioning jack is placed in the middle. Through the jacking action of the jack, it is verified whether the bearing capacity of the hoop meets the requirements;

[0072] ②In order to keep the jack stable and have sufficient contact surface with the hoop, a steel plate with a thickness of 10 mm, a length of 35 mm and a width of 20 mm is welded at the lug position of the hoop. When welding, attention should be paid not to damage or contaminate the finished pier column; the steel plate is kept horizontal, and the height difference of the four corners is not more than 2 mm; the jack is used with the anchor pad, and the anchor pad is required to be horizontal when placed to ensure that the anchor pad is uniformly stressed during the jacking process of the jack.

[0073] ③The hoop bolt is tightened according to the calculated value, and the torque wrench is used for detection and recording.

[0074] ④When verifying whether the hoop position has slipped, first measure the distance from the observation point to the hoop wall with a ruler to see whether there is any change; the measurement group verifies the final conclusion by testing the elevation of the hoop wall.

[0075] ⑤During construction, the load corresponding to the four levels of stress of 60%F, 80%F, 100%F and 110%F is applied. After the first and second levels of load are completed, 5 min is continued, after the third level of load is completed, 10 min is continued, and after the fourth level of load is completed, 30 min is continued. The on-site technical personnel and construction team personnel pay attention to the observation point at all times during the loading process to determine whether the hoop slips. When the hoop slips, immediately stop loading and quickly record the current oil gauge reading, and report the project engineering department for bolt pretightening force adjustment.

[0076] After the completion of the loading of the hoop, according to the loading sequence, unload in reverse order, until the unloading is completed, remove the jack.

[0077] After the completion of the loading of the hoop, according to the loading sequence, unload in reverse order, until the unloading is completed, remove the jack.

[0078] The above is a further detailed description of the utility model made in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For those skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of equivalent substitutions or obvious modifications can be made, and the performance or use is the same, which should be regarded as belonging to the protection scope of the utility model.

Claims

1. A device for testing the load bearing capacity of a hoop, characterized in that The utility model relates to a pile fixing device, including: The upper embrace hoop (1) is installed on the pile body, and it has the first lug (101); The lower embrace hoop (2) is installed on the pile body, and it is spaced below the upper embrace hoop (1), and it has the second lug (201); The upper steel sheet (3) is installed below the first lug (101); The lower steel sheet (4) is installed above the second lug (201); The hydraulic jack (5) is installed on the lower steel sheet (4), and the piston end is towards the upper steel sheet (3) and is installed with anchor pad (501); The oil pump (6) has the oil circuit communication hydraulic jack (5), and it also has pressure gauge (601); The limiting embrace hoop (7) is installed on the pile body and is arranged between the upper embrace hoop (1) and the lower embrace hoop (2); The first limiting shaft (8) is fixed on the bottom surface of the upper embrace hoop (1) and abuts on the lower side surface of the limiting embrace hoop (7); The first thin ring piece (9) is placed on the upper side surface of the limiting embrace hoop (7) and is penetrated by the first limiting shaft (8); The first thin line (10) is fixed on the first thin ring piece (9) on one end; The first counterweight (11) is fixed on the other end of the first thin line (10) and hangs in the air.

2. The load capacity testing device for a hoop according to claim 1, wherein The bottom surface of the limiting embrace hoop (7) is fixed with the second limiting shaft (12), the second limiting shaft (12) abuts on the upper surface of the lower embrace hoop (2), the lower end of the second limiting shaft (12) is penetrated into the second thin ring piece (13), one end of the second thin line (14) is fixed on the second thin ring piece (13), and the other end of the second thin line (14) is fixed with the second counterweight (23).

3. The load capacity testing device for a steel band clamp according to claim 2, wherein The bottom end of the first limiting shaft (8) is semispherical.

4. The load capacity testing device for a steel band clamp according to claim 3, wherein The lower side surface of the upper embrace hoop (1) is welded with the first nut (15), and the upper end of the first limiting shaft (8) is provided with a thread to be threadedly connected with the first nut (15).

5. The load capacity testing device for a steel band clamp of claim 4, wherein The lower side surface of the limiting embrace hoop (7) is welded with the second nut (16), and the upper end of the second limiting shaft (12) is provided with a thread to be threadedly connected with the second nut (16).

6. The load capacity testing device for a steel band clamp of claim 1 wherein The upper embrace hoop (1), the lower embrace hoop (2) and the limiting embrace hoop (7) are provided with the level bubble (17) on the upper surface.

7. The load capacity testing device for a hoop according to claim 1, wherein The first rectangular sleeve (18) is sleeved on the first limiting shaft (8), the first measuring scale (19) is inserted into the first rectangular sleeve (18), the first limiting bolt (22) is threadedly penetrated into the side surface of the first rectangular sleeve (18), and the first measuring scale (19) is abutted on the first limiting shaft (8) by the first limiting bolt (22).

8. The load capacity testing device for a hose clamp according to claim 2, wherein The second rectangular sleeve (20) is sleeved on the second limiting shaft (12), the second measuring scale (21) is inserted into the second rectangular sleeve (20), the second limiting bolt (25) is threadedly penetrated into the side surface of the second rectangular sleeve (20), and the second measuring scale (21) is abutted on the second limiting shaft (12) by the second limiting bolt (25).

9. The load capacity testing device for a hoop according to claim 1, wherein The first lug (101) and the second lug (201) are reserved with the interval (24) in the middle.

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