Pile foundation bearing capacity detection device

Abstract

The utility model discloses a pile foundation bearing capacity detection device, which belongs to the technical field of pile foundation detection and comprises a detection table and a detection mechanism positioned on the detection table, a penetrating groove is arranged at the axial center of the detection table in a penetrating manner, side support piles are symmetrically arranged on two sides of the top of the detection table, and side movable grooves are arranged on opposite sides of the two side support piles. A vertical screw rod and a limiting sliding rod are arranged in the two side movable grooves respectively, a motor is vertically installed at the top of the side supporting pile on the same side with the screw rod, an output shaft of the motor is coaxially connected with the screw rod, the two ends of the limiting sliding rod are fixedly connected with the side supporting piles, a sedimentation table is horizontally arranged between the two side supporting piles, and one end of the sedimentation table is arranged on the screw rod in a threaded and sleeving mode. According to the pile foundation bearing capacity detection device, whether the pile foundation is settled or not can be known by checking whether the position of the laser pen is changed or not, so that the structural reliability of the pile foundation is judged, and the detection result of the pile foundation bearing capacity is more visual and convenient to check.

Description

Technical Field

[0001] The utility model relates to the field of pile foundation detection equipment, in particular to a pile foundation bearing capacity detection device. Background Art

[0002] The pile foundation is a deep foundation consisting of a pile and a pile cap connected to the top of the pile, or a single pile foundation connected by a column and the pile foundation. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile foundation; if the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile foundation. The pile foundation is a basic structure used to support buildings in current engineering construction. According to national standards, building pile foundations are usually low cap pile foundations. After the pile foundation construction is completed, it is necessary to test the various properties of the pile foundation. Among them, the bearing performance of the pile foundation is one of the necessary indicators in the project acceptance. The main method is to apply a downward vertical force on the top of the pile and observe the downward displacement of the pile body as a whole under a certain period of time to determine the corresponding single pile bearing capacity. However, the current pile foundation bearing capacity detection device usually requires manual use of some measuring tools to perform pre- and post-test measurements after placing the counterweight block on the pile foundation, resulting in the test results being not intuitive and not accurate. Utility Model Content

[0003] The utility model provides a pile foundation bearing capacity detection device, the purpose of which is to use a laser pen to mark the position of a counterweight block, and to know whether the pile foundation has settled by checking the change of the laser pen position, so as to judge its structural reliability, making the detection result of the pile foundation bearing capacity more intuitive and accurate.

[0004] To achieve its purpose, the utility model adopts the following technical solutions:

[0005] A pile foundation bearing capacity detection device comprises a detection platform and a detection mechanism located on the detection platform, wherein a through groove is penetrated at the axial center of the detection platform, side support piles are symmetrically arranged on both sides of the top of the detection platform, side movable grooves are opened on the sides facing each other of the two side support piles, vertical screw rods and limit slide bars are respectively arranged in the two side movable grooves, a motor is vertically installed on the top of the side support pile on the same side as the screw rod, and the output shaft of the motor is coaxially connected with the screw rod, and both ends of the limit slide bar are fixedly connected to the side support piles;

[0006] A horizontal settlement platform is provided between the two side support piles, one end of the settlement platform is threadedly sleeved on the screw rod, and the other end is slidably sleeved on the limiting slide rod; extension rods are symmetrically provided on both sides of the bottom of the settlement platform, and the two extension rods are provided with supporting plates on the opposite sides; the detection mechanism includes a restraining ring arranged above the two supporting plates, a counterweight detection block is fixedly connected in the restraining ring, the bottoms of the two extension rods are fixedly connected to mounting plates, and the two mounting plates are provided with horizontal laser pens, the two supporting plates are both arc-shaped, and the bottoms of the restraining rings are in contact with the two supporting plates.

[0007] Furthermore, the screw rod and the limiting sliding rod are both vertically arranged and symmetrically arranged on both sides of the settlement platform, and both ends of the screw rod are rotatably connected to the side support piles.

[0008] Furthermore, the two extension rods are both L-shaped and mirror-arranged, and an inclined reinforcement plate is fixedly connected to the inner side of each extension rod.

[0009] Furthermore, support feet are provided at the four corners of the bottom of the testing platform.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The pile foundation bearing capacity detection device provided by the utility model drives the screw rod to rotate by driving the motor, so that the settlement platform drives the restraining ring to sink, and then the settlement platform, the counterweight detection block and the two laser pens descend synchronously. When the counterweight detection block is pressed on the pile foundation and remains motionless, the settlement platform stops sinking, and the two laser pens also remain motionless. Subsequently, after the counterweight detection block is left stationary for a period of time, it is possible to know whether the pile foundation has settled by checking whether the position of the laser pen changes, thereby judging the structural reliability, making the detection result of the pile foundation bearing capacity more intuitive and accurate, and convenient for viewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the pile foundation bearing capacity detection device of the utility model;

[0013] Figure 2 It is a half-section schematic diagram of a pile foundation bearing capacity detection device of the utility model;

[0014] Figure 3 It is a three-dimensional diagram of the side support pile and the detection mechanism of the utility model;

[0015] In the figure: 1. detection table; 2. penetration groove; 3. side support pile; 4. motor; 5. side movable groove; 6. screw rod; 7. limit slide bar; 8. settlement table; 9. extension rod; 10. support plate; 11. restraining ring; 12. counterweight detection block; 13. reinforcement plate; 14. mounting plate; 15. laser pen; 16. support foot. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] like Figure 1-3As shown, the utility model is a pile foundation bearing capacity detection device, including a detection platform 1 and a detection mechanism located on the detection platform 1, and support feet 16 are installed at the four corners of the bottom of the detection platform 1 to facilitate supporting the detection platform 1 and the structure thereon; a penetration groove 2 is penetrated at the axial center of the detection platform 1, so that all structures below the settlement platform 8 can pass through the penetration groove 2 and be placed under the detection platform 1, and side support piles 3 are symmetrically arranged on both sides of the top of the detection platform 1, and side movable grooves 5 are opened on the sides facing each other of the two side support piles 3, and vertical screws 6 and limit slide bars 7 are respectively arranged in the two side movable grooves 5, and a motor 4 is vertically installed on the top of the side support pile 3 on the same side as the screw 6, and the motor 4 needs to be powered by external power facilities, and the output shaft of the motor 4 is coaxially connected with the screw 6, and both ends of the limit slide bar 7 are welded to the side support pile 3.

[0018] A horizontal settlement platform 8 is provided between the two side support piles 3, and vertical screws 6 and limiting slide bars 7 are symmetrically provided on both sides of the settlement platform 8. Both ends of the screw 6 are rotatably connected to the side support piles 3, so that the screw 6 can operate stably under the drive of the motor 4. One end of the settlement platform 8 is threadedly sleeved on the screw 6, and the other end is slidably sleeved on the limiting slide bar 7; extension rods 9 are symmetrically provided on both sides of the bottom of the settlement platform 8, and the two extension rods 9 are L-shaped and mirror-imaged, and arc-shaped support plates 10 are provided on the opposite sides of the two extension rods 9, and an inclined reinforcement plate 13 is welded on the inner side of each extension rod 9, and the reinforcement plate 13 can strengthen the structure of the extension rod 9.

[0019] The detection mechanism includes a restraining ring 11 disposed above the two support plates 10, and the bottom of the restraining ring 11 is in contact with the two support plates 10. A counterweight detection block 12 is fixedly connected in the restraining ring 11, but the two support plates 10 do not contact the counterweight detection block 12, thereby avoiding affecting the use of the counterweight detection block 12, wherein the counterweight detection block 12 is used to be directly crimped on the pile foundation to be detected, thereby testing its bearing capacity. The bottoms of the two extension rods 9 are fixedly connected to mounting plates 14, and the two mounting plates 14 are provided with horizontal laser pens 15. The laser emission heads of the two laser pens 15 are located on the opposite side of the two. The laser pen 15 can refer to the laser toys played by children in the prior art, and can emit a straight laser on the counterweight detection block 12.

[0020] Before using the pile foundation bearing capacity detection device, move the device above the pile foundation to be detected, so that the pile foundation is located directly below the counterweight detection block 12, and the detection platform 1 is placed horizontally. When in use, the driving motor 4 is powered on and drives the screw 6 to operate, so that the settlement platform 8 sinks along with the limit slide bar 7, driving all structures below the settlement platform 8 (including the counterweight detection block 12) to sink, until the counterweight detection block 12 is pressed on the pile foundation and remains stable, then the settlement platform 8, the extension rod 9 and the support plate 10 are sunk a short distance, so that the support plate 10 is separated from the restraining ring 11, and then the structures below the settlement platform 8 remain motionless, at this time, the two laser pens 15 are operated to emit horizontal lasers and shoot at both sides of the outer wall of the counterweight detection block 12, and then the personnel carve a mark on the outer wall of the counterweight detection block 12. After the counterweight detection block 12 is left on the pile foundation for a period of time, the bearing capacity of the pile foundation is judged to be qualified by observing whether the position of the counterweight detection block 12 changes after the standing time (whether the position where the laser pen 15 is projected on the counterweight detection block 12 changes from the previously marked position).

[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pile foundation bearing capacity detection device, comprising a detection platform (1) and a detection mechanism located on the detection platform (1), characterized in that: The detection platform (1) is provided with a through groove (2) at the axial center thereof, and side support piles (3) are symmetrically provided on both sides of the top of the detection platform (1), and side movable grooves (5) are provided on the opposite sides of the two side support piles (3), and vertical screw rods (6) and limit slide bars (7) are respectively provided in the two side movable grooves (5), and a motor (4) is vertically installed on the top of the side support pile (3) on the same side as the screw rod (6), and the output shaft of the motor (4) is coaxially connected to the screw rod (6), and both ends of the limit slide bar (7) are fixedly connected to the side support pile (3); A horizontal settlement platform (8) is provided between the two side support piles (3), one end of the settlement platform (8) is threadedly sleeved on the screw rod (6), and the other end is slidably sleeved on the limit sliding rod (7); extension rods (9) are symmetrically provided on both sides of the bottom of the settlement platform (8), and a support plate (10) is provided on the opposite sides of the two extension rods (9); the detection mechanism comprises a restraining ring (11) provided above the two support plates (10), a counterweight detection block (12) is fixedly connected in the restraining ring (11), the bottoms of the two extension rods (9) are fixedly connected to mounting plates (14), and the two mounting plates (14) are provided with horizontal laser pens (15); the two support plates (10) are both designed in an arc shape, and the bottom of the restraining ring (11) abuts against the two support plates (10).

2. A pile foundation bearing capacity detection device as claimed in claim 1, characterized in that: The screw rod (6) and the limit sliding rod (7) are both vertically arranged and symmetrically arranged on both sides of the settlement platform (8), and both ends of the screw rod (6) are rotatably connected to the side support piles (3).

3. A pile foundation bearing capacity detection device as claimed in claim 2, characterized in that: The two extension rods (9) are both L-shaped and are arranged in a mirror image, and an inclined reinforcement plate (13) is fixedly connected to the inner side of each extension rod (9).

4. A pile foundation bearing capacity detection device according to any one of claims 1 to 3, characterized in that: Support feet (16) are provided at the four corners of the bottom of the testing platform (1).

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