Pile foundation high-strain detection structure capable of improving detection precision

Abstract

A plurality of guide columns are arranged on the upper surface of a bottom supporting ring, the top ends of the guide columns are connected with a top plate, a through groove is formed in the center of the top plate, and guide grooves are formed in the inner sides of the guide columns. A plurality of through holes are evenly formed in the bottom supporting ring in the radial direction, internal thread sleeves are arranged at the through holes and matched with the locking screws, the heavy hammer blocks are movably arranged on the inner sides of the guide stand columns, a plurality of guide blocks are evenly arranged on the outer side surfaces of the heavy hammer blocks, and the guide blocks correspond to the guide stand columns one to one. The pile foundation supporting device is reasonable in structure, supporting of the pile foundation supporting device and the pile foundation is achieved through the locking screws of the bottom supporting ring, so that the bottom supporting ring is coaxial with the pile foundation as much as possible, the heavy hammer block is matched with the guide grooves of the guide stand columns through the guide blocks, and when the heavy hammer block falls, the heavy hammer block is coaxial with the pile foundation as much as possible. In addition, deviation does not occur in the falling process, and the detection precision is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-strain detection structures for pile foundations, and specifically relates to a high-strain detection structure for pile foundations that improves detection accuracy. Background Technique

[0002] High-strain detection is a detection method for judging the vertical compressive bearing capacity and the integrity of the pile shaft of a single pile. During the experiment, a heavy hammer impacts the top of the pile, and the velocity and force time history curves at the top of the pile are measured and analyzed through wave theory.

[0003] At present, the heavy hammer block of the high-strain detection structure for pile foundations is suspended by a crane, and then the hook is released to directly impact the top of the pile foundation. During the falling process of the heavy hammer block, it is easy to skew and deviate, resulting in deviations in the detection results. Although some use immediate protection frames, the existing protection frames are only used to prevent the heavy hammer block from falling outside, making it difficult for the heavy hammer block to hit the top of the pile foundation exactly. Therefore, there is an urgent need for an improved technology to solve this problem existing in the prior art. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-strain detection structure for pile foundations that improves detection accuracy. The support of the pile foundation is realized through the locking screw of the bottom support ring, so that the bottom support ring is as coaxial with the pile foundation as possible. The heavy hammer block is matched with the guide groove of the guide column through the guide block. When the heavy hammer block falls, the heavy hammer block is as coaxial with the pile foundation as possible and will not deviate during the falling process, greatly improving the detection accuracy. At the same time, the bottom support ring is matched with the ground nail through the ground nail hole of the fixed plate, thereby realizing the overall positioning and greatly improving the stability, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-strain detection structure for pile foundations that improves detection accuracy, including a bottom support ring, guide columns, a top plate, locking screws and a heavy hammer block. A plurality of guide columns are evenly arranged on the upper surface of the bottom support ring, the tops of the guide columns are all connected to the top plate, a through groove is opened at the central position of the top plate, a guide groove is opened inside the guide column, a plurality of through holes are evenly opened along the radial direction of the bottom support ring and internal thread sleeves are arranged at the through holes, the internal thread sleeves are matched with the locking screws, the heavy hammer block is movably arranged inside the guide column, a plurality of guide blocks are evenly arranged on the outer surface of the heavy hammer block, the guide blocks correspond to the guide columns one by one, and the guide blocks are slidably matched with the guide grooves of the corresponding guide columns.

[0006] Preferably, in the high-strain detection structure for pile foundations provided by the utility model, a plurality of reinforcing blocks are evenly arranged on the lower surface of the top plate, the reinforcing blocks correspond to the guide columns one by one, the reinforcing blocks are arranged at the top of the guide grooves of the guide columns, and the reinforcing blocks are connected to the tops of the guide columns through bolts.

[0007] Preferably, a high-strain pile foundation detection structure for improving detection accuracy provided by the present utility model, wherein, an external hexagonal head is provided at the outer end of the locking screw, and a conical head is provided at the inner end of the locking screw.

[0008] Preferably, a high-strain pile foundation detection structure for improving detection accuracy provided by the present utility model, wherein, a lifting member is provided on the upper surface of the weight block.

[0009] Preferably, a high-strain pile foundation detection structure for improving detection accuracy provided by the present utility model, wherein, a fixing plate is further provided on the periphery of the bottom support ring, and the fixing plate is provided with ground nail holes.

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

[0011] During the detection process, the support with the pile foundation is realized through the locking screw of the bottom support ring, so that the bottom support ring is as coaxial with the pile foundation as possible. The weight block is matched with the guide groove of the guide post through the guide block. When the weight block falls, the weight block is as coaxial with the pile foundation as possible and will not shift during the falling process, greatly improving the detection accuracy. At the same time, the bottom support ring is matched with the ground nail through the ground nail hole of the fixing plate, thereby realizing the overall positioning and greatly improving the stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a top view structural diagram of the present utility model at the bottom support ring;

[0014] Figure 3 is a schematic structural diagram of the top plate;

[0015] Figure 4 is a bottom view structural diagram of the top plate;

[0016] Figure 5 is a schematic structural diagram of the weight block;

[0017] Figure 6 is a top view structural diagram of the weight block.

[0018] In the figure: bottom support ring 1, guide post 2, top plate 3, locking screw 4, weight block 5, through groove 6, guide groove 7, internal thread sleeve 8, guide block 9, strengthening block 10, external hexagonal head 11, conical head 12, lifting member 13, fixing plate 14, ground nail hole 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model;

[0020] It should be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0021] Please refer to Figure 1-6 , the present utility model provides a technical solution: a high-strain detection structure for pile foundations that improves detection accuracy, including a bottom support ring 1, guide columns 2, a top plate 3, locking screws 4, and a weight block 5. A fixing plate 14 is further provided on the periphery of the bottom support ring 1. The fixing plate 14 is provided with ground nail holes 15. Through the ground nail holes 15 of the fixing plate 14, the bottom support ring 1 is connected to the ground around the pile foundation. A number of guide columns 2 are evenly arranged on the upper surface of the bottom support ring 1. The tops of the guide columns 2 are all connected to the top plate 3. A number of strengthening blocks 10 are evenly arranged on the lower surface of the top plate 3. The strengthening blocks 10 correspond to the guide columns 2 one by one. The strengthening blocks 10 are arranged at the top of the guide grooves 7 of the guide columns 2. The strengthening blocks 10 are connected to the tops of the guide columns 2 by bolts. First, the strengthening blocks 10 are used to connect with each guide column 2. Secondly, the strengthening blocks 10 are used to ensure the structural strength after the top plate 3 is connected to the guide columns 2. A through groove 6 is opened at the center position of the top plate 3. Guide grooves 7 are opened on the inner sides of the guide columns 2. A number of through holes are evenly opened in the bottom support ring 1 along the radial direction, and internal thread sleeves 8 are arranged at the through holes. The internal thread sleeves 8 cooperate with the locking screws 4. The outer ends of the locking screws 4 are provided with external hexagonal heads 11, and the inner ends of the locking screws 4 are provided with conical heads 12. The rotation of the locking screws 4 is realized through the external hexagonal heads 11, and the firm connection with the side wall of the pile foundation is realized through the conical heads 12, improving the connection between the locking screws 4 and the pile foundation. The weight block 5 is movably arranged inside the guide columns 2. A hanging member 13 is arranged on the upper surface of the weight block 5. The connection and hoisting with a steel wire rope are realized through the hanging member 13. A number of guide blocks 9 are evenly arranged on the outer side surface of the weight block 5. The guide blocks 9 correspond to the guide columns 2 one by one. The guide blocks 9 are slidably matched with the guide grooves 7 of the corresponding guide columns 2.

[0022] Usage method and principle: First, place the bottom support ring 1 with the guiding columns 2 on the periphery of the pile foundation. Then, rotate each locking screw 4 so that all the locking screws 4 first contact the side wall of the pile foundation, and then tighten each locking screw 4 so that the locking screw 4 abuts against the outer surface of the pile foundation. Next, pass the ground nail through the ground nail hole 15 of the fixing plate 14 to complete the connection between the bottom support ring 1 and the pile foundation. Lift the weight block 5 by a crane and a steel wire rope, and place the weight block 5 above the bottom support ring 1. At the same time, make the guide block 9 of the weight block 5 slide into the guide grooves 7 of each guiding column 2. Loosen the hook of the crane, and then insert the strengthening block 10 of the top plate 3 into the guide grooves 7 of each guiding column 2. Subsequently, the barrel bolts fasten and connect the strengthening block 10 and the guiding column 2. Finally, pass the hook of the crane through the through groove 6 of the top plate 3 and reconnect it to the lifting member 13 of the weight block 5 to complete the preparation work. Before use, connect the sensor to the pile foundation, and place the cushion plate on the upper surface of the pile foundation. Then, lift the weight block 5 and loosen the hook. The weight block 5 freely falls and impacts the upper surface of the pile foundation to realize the detection inside the pile foundation. The structure of the present utility model is reasonable. During the detection process, first, the support of the pile foundation is realized through the locking screws 4 of the bottom support ring 1, so that the bottom support ring 1 is as coaxial with the pile foundation as possible. And the weight block 5 is matched with the guide grooves 7 of the guiding columns 2 through the guide block 9. When the weight block 5 falls, the weight block 5 is as coaxial with the pile foundation as possible and will not shift during the falling process, greatly improving the detection accuracy. At the same time, the bottom support ring 1 is matched with the ground nail through the ground nail hole 15 of the fixing plate 14, so as to realize the overall positioning and greatly improve the stability.

[0023] Those not detailed in the present utility model are all well-known technologies to those skilled in the art.

[0024] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A high-strain detection structure for pile foundations that improves detection accuracy, characterized in that: It includes a bottom support ring (1), guide columns (2), a top plate (3), locking screws (4) and weight blocks (5). A number of guide columns (2) are evenly arranged on the upper surface of the bottom support ring (1). The tops of the guide columns (2) are all connected to the top plate (3). A through groove (6) is formed at the center of the top plate (3). Guide grooves (7) are formed inside the guide columns (2). A number of through holes are evenly formed in the bottom support ring (1) along the radial direction, and internal thread sleeves (8) are arranged at the through holes. The internal thread sleeves (8) cooperate with the locking screws (4). The weight blocks (5) are movably arranged inside the guide columns (2). A number of guide blocks (9) are evenly arranged on the outer surface of the weight blocks (5). The guide blocks (9) correspond to the guide columns (2) one by one. The guide blocks (9) are in sliding fit with the guide grooves (7) of the corresponding guide columns (2).

2. The high-strain pile foundation detection structure for improving detection accuracy according to claim 1, characterized in that: A number of reinforcing blocks (10) are evenly arranged on the lower surface of the top plate (3). The reinforcing blocks (10) correspond to the guide columns (2) one by one. The reinforcing blocks (10) are arranged at the tops of the guide grooves (7) of the guide columns (2). The reinforcing blocks (10) are connected to the tops of the guide columns (2) by bolts.

3. A high-strain pile foundation detection structure for improving detection accuracy according to claim 1, characterized in that: An external hexagonal head (11) is arranged at the outer end of the locking screw (4), and a conical head (12) is arranged at the inner end of the locking screw (4).

4. A high-strain pile foundation detection structure for improving detection accuracy according to claim 1, characterized in that: A hanging piece (13) is arranged on the upper surface of the weight block (5).

5. The high-strain pile foundation detection structure for improving detection accuracy according to claim 1, characterized in that: A fixing plate (14) is further arranged on the periphery of the bottom support ring (1), and a ground nail hole (15) is formed in the fixing plate (14).

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