Pile hole sediment thickness detection equipment for cast-in-situ bored pile construction

Abstract

The utility model is suitable for the technical field of cast-in-situ bored pile construction, and provides pile hole sediment thickness detection equipment for cast-in-situ bored pile construction. The limiting sleeve is embedded in the center of the top of the floating disc; the sediment thickness sampling assembly is arranged on the inner side of the limiting sleeve; wherein the sediment thickness sampling assembly comprises a sampling pipe penetrating through the floating disc and the limiting sleeve; the sampling cavity is formed in the center of the bottom of the sampling pipe; the transparent window is embedded in the outer side wall of the sampling tube; the scale marks are coated on the outer side wall of the sampling tube close to one side of the transparent window; the sampling pipe is inserted into the slag forming layer and the bearing soil layer under the gravity impact of the gravity ball, sediment and soil can be sampled into the sampling cavity together, the thickness of the slag forming layer and the thickness of the bearing soil layer are shown in the sampling cavity, the thickness of the slag formed in the sampling cavity can be calculated through the transparent window and the scale marks, and the thickness of the sediment is visual and clear.

Description

Technical Field

[0001] The utility model belongs to the technical field of bored cast-in-place pile construction, in particular to pile hole sediment thickness detection equipment for bored cast-in-place pile construction. Background Art

[0002] Bored piles are widely used in building foundation projects for their low construction noise, low vibration impact, high single pile bearing capacity, wide application range and low cost. Controlling the thickness of pile bottom sediment is crucial in bored pile construction. A layer of sediment will be deposited at the bottom due to the collapse of the inner wall during pile hole drilling. (After drilling, coarse particles suspended in the mud will settle to the bottom of the hole, or the hole wall will collapse to the bottom due to friction with the hole wall during the lowering of the steel cage, or the hole wall collapse due to excessive osmotic pressure caused by low mud concentration will deposit a layer of sediment at the bottom. If the sediment thickness is too thick, it will affect the designed bearing capacity of the foundation pile.

[0003] In the prior art, a Chinese patent with a reference number of CN 215572593 U discloses a device for measuring the thickness of sediment at the bottom of a bored pile, which includes a base, a probe, a magnetic ring, a drop hammer and a traction rope; the base includes a limit groove, a bottom plate and a guide rail, the guide rail is vertically fixed to the bottom plate, and the hollow channel inside the guide rail and the center hole of the bottom plate constitute a guide channel running through the entire base; the limit groove is opened at the bottom of the guide channel, so that a stepped surface is formed inside the guide channel; the probe includes a probe guide rod, a probe probe and a probe cap. The utility model performs measurement through a mechanical device, has a clear measurement principle, is convenient and fast, and greatly improves the efficiency of measuring the thickness of the pile bottom sediment.

[0004] This comparative document provides a pile hole sediment thickness detection device that does not require electricity, but the above patent cannot ensure that the probe probe will not be inserted into the bearing soil layer during detection, which leads to poor sediment thickness detection accuracy.

[0005] Therefore, a pile hole sediment thickness detection device for bored cast-in-place pile construction is proposed. Utility Model Content

[0006] The utility model provides a pile hole sediment thickness detection device for bored cast-in-place pile construction, aiming to solve the above-mentioned problem.

[0007] The utility model is implemented as follows: a pile hole sediment thickness detection device for bored cast-in-place pile construction, comprising: a floating plate; a limiting sleeve embedded in the central position of the top of the floating plate; a sediment thickness sampling assembly arranged on the inner side of the limiting sleeve; wherein the sediment thickness sampling assembly comprises: a sampling tube running through the floating plate and the limiting sleeve; a sampling cavity opened at the central position of the bottom of the sampling tube; a transparent window embedded in the outer wall of the sampling tube; a scale line coated on the outer wall of the sampling tube at a position close to the transparent window; a convex column integrally formed on the outer wall of the sampling tube at a position close to the bottom of the floating plate; and a circular plate integrally formed on the top end of the sampling tube; a first steel wire rope embedded in the outer wall of the sampling tube at a position close to the top of the floating plate; a gravity downward pressure assembly arranged at a position above the circular plate; wherein the gravity downward pressure assembly comprises: a gravity ball arranged at a position above the circular plate; a second steel wire rope embedded in the top of the gravity ball.

[0008] Preferably, a pile hole sediment thickness detection device for bored cast-in-place pile construction also includes a pile hole guide assembly arranged on the outer wall of the floating plate, wherein the pile hole guide assembly includes: a fixing sleeve fixed to the outer wall of the floating plate by bolts; a support rod embedded in one end of the fixing sleeve; a guide wheel rotating on the inner wall of the support rod; and a fastening nut connected to the top of the fixing sleeve by threaded engagement.

[0009] Preferably, a pile hole sediment thickness detection device for bored pile construction further includes a pile hole arranged outside the floating plate; a slag layer and a bearing soil layer arranged inside the pile hole, and the slag layer is located above the bearing soil layer.

[0010] Preferably, there are four protruding columns in total, and the four protruding columns are symmetrically arranged on the outer side wall of the sampling tube.

[0011] Preferably, a through hole communicating with the limiting sleeve is opened at a central position of the bottom of the floating plate, close to a position just below the limiting sleeve.

[0012] Preferably, there are four fixing sleeves in total, and the four fixing sleeves are symmetrically arranged on the outer side wall of the floating plate.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] The sampling tube is inserted into the slag layer and the holding soil layer under the gravitational impact of the gravity ball, so that the sediment and soil can be sampled into the sampling cavity together. The thickness of the slag layer and the holding soil layer is displayed inside the sampling cavity. The thickness of the slag in the sampling cavity can be calculated using the transparent window and scale lines. The thickness of the sediment is intuitive and clear, and there will be no deviation due to the existence of the holding soil layer, thus ensuring the accuracy of the sediment thickness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the sediment thickness sampling assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the floating plate structure of the utility model;

[0018] Figure 4 This is a cross-sectional view of the sampling tube of the present utility model;

[0019] Figure 5 It is a schematic diagram of the use of the detection equipment of the present utility model.

[0020] In the figure: 1. Floating plate; 2. Limiting sleeve; 3. Sediment thickness sampling assembly; 31. Sampling tube; 32. Sampling chamber; 33. First steel wire rope; 34. Transparent window; 35. Scale line; 36. Boss; 37. Disc; 4. Gravity pressure assembly; 41. Gravity ball; 42. Second steel wire rope; 5. Pile hole guide assembly; 51. Fixing sleeve; 52. Support rod; 53. Guide wheel; 54. Fastening nut; 6. Pile hole; 7. Slag layer; 8. Bearing soil layer. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a device for detecting the thickness of pile hole sediment in bored pile construction. Figure 1-5As shown, it includes a pile hole 6 and a floating plate 1, the floating plate 1 is located on the inner side of the pile hole 6, and the limiting sleeve 2 is fixed to the top center of the floating plate 1 by adhesive, and a through hole connected to the limiting sleeve 2 is opened at the bottom center of the floating plate 1 near the position directly below the limiting sleeve 2, and a sampling tube 31 in the sediment thickness sampling assembly 3 is passed through the limiting sleeve 2 and the top of the floating plate 1, and a sampling cavity 32 is opened at the bottom center of the sampling tube 31, a transparent window 34 is embedded on one side outer wall of the sampling tube 31, and a scale line 35 is coated on one side outer wall of the sampling tube 31 near the transparent window 34, and a scale line 35 is formed on the outer wall of one side of the sampling tube 31 near the bottom position of the floating plate 1. There are four protrusions 36 in total, and the four protrusions 36 are symmetrically arranged on the outer wall of the sampling tube 31. A disc 37 is integrally formed on the top of the sampling tube 31. A first steel wire rope 33 is embedded on the outer wall of one side of the sampling tube 31 near the upper position of the floating plate 1. A gravity ball 41 in the gravity pressure component 4 is provided above the disc 37. The diameter of the disc 37 is twice the diameter of the gravity ball 41, so that the gravity ball 41 hits the disc 37 during the falling process. A second steel wire rope 42 is embedded on the top of the gravity ball 41. A slag layer 7 and a bearing soil layer 8 are provided inside the pile hole 6 near the lower position of the floating plate 1. The slag layer 7 is located above the bearing soil layer 8.

[0024] It should be noted that, since the existing pile hole sediment thickness detection device has the problem of poor sediment thickness detection accuracy due to the insertion of the probe probe into the bearing soil layer, this embodiment inserts the sampling tube 31 into the slag layer 7 and the bearing soil layer 8 under the gravitational impact of the gravity ball 41, so that the sediment and soil can be sampled into the sampling cavity 32 together. The thickness of the slag layer 7 and the bearing soil layer 8 are displayed inside the sampling cavity 32. The thickness of the slag in the sampling cavity 32 can be calculated using the transparent window 34 and the scale line 35. The thickness of the sediment is intuitive and clear, and will not be deviated due to the existence of the bearing soil layer 8, thereby ensuring the accuracy of sediment thickness detection.

[0025] Specifically, in this embodiment, this solution mainly includes a sediment thickness sampling component 3 and a gravity pressing component 4. When detecting the thickness of the slag layer 7 of the pile hole 6, the floating plate 1 is placed in the pile hole 6 through the first steel wire rope 33. The floating plate 1 floats on the mud in the pile hole 6 by its own buoyancy. At this time, the gravity ball 41 is suspended above the disc 37 through an external lifting device (crane, electric hoist). After the gravity ball 41 falls freely, the gravity ball 41 impacts the disc 37. After the disc 37 is subjected to the impact force, it drives the sampling tube 31 to move downward. The sampling tube 31 moves downward in multiple The secondary gravity ball 41 is inserted into the slag layer 7 and the bearing soil layer 8 under impact, and the slag in the slag layer 7 and the soil in the bearing soil layer 8 enter the sampling cavity 32. The soil in the bearing soil layer 8 is hard and can seal one end of the sampling cavity 32. After completing the slag thickness sampling, the gravity ball 41 is pulled out of the pile hole 6 by the second steel wire rope 42, and finally the floating plate 1 is pulled out of the pile hole 6 by the first steel wire rope 33. Under the limitation of the protruding column 36, the sampling tube 31 is pulled out of the pile hole 6 together. According to the transparent window 34 and the scale line 35 on the sampling tube 31, the thickness of the slag in the sampling cavity 32 can be calculated.

[0026] The present invention provides a device for detecting the thickness of pile hole sediment in bored pile construction. Figure 1 、 Figure 3 and Figure 5 As shown, it includes a floating plate 1, and a fixing sleeve 51 in the pile hole guide assembly 5 is fixedly connected to the outer wall of one side of the floating plate 1 by bolts. There are four fixing sleeves 51 in total, and the four fixing sleeves 51 are symmetrically arranged on the outer wall of the floating plate 1. A support rod 52 is embedded in the end of the fixing sleeve 51 away from the floating plate 1, and one end of the support rod 52 is rotatably connected to the guide wheel 53, and a groove is provided at one end of the support rod 52 near the outer side of the guide wheel 53. The top of the fixing sleeve 51 is screwed with a fastening nut 54.

[0027] Specifically, in this embodiment, this solution mainly includes a pile hole guide assembly 5. Before the floating plate 1 is placed in the pile hole 6, the position of the guide wheel 53 is adjusted according to the inner diameter of the pile hole 6, and the support rod 52 is pulled at one end of the fixing sleeve 51. The distance between the guide wheel 53 and the center of the floating plate 1 is adjusted. When the outer wall of the guide wheel 53 contacts the inner wall of the pile hole 6, the fastening nut 54 is tightened, and one end of the fastening nut 54 squeezes the support rod 52 to fix the position of the support rod 52. Through the guidance of the guide wheel 53, it is convenient to pull the floating plate 1 out of the pile hole 6, reduce the collision between the device and the pile hole 6, thereby avoiding the falling off of the wall of the pile hole 6, and further ensure that the floating plate 1 is level, ensure that the sampling tube 31 can be vertically inserted into the slag layer 7 and the bearing soil layer 8, and ensure the accuracy of the slag thickness detection result.

[0028] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0029] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0030] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A pile hole sediment thickness detection device for bored pile construction, characterized in that: include: Floating plate (1); A limiting sleeve (2) embedded in the center of the top of the floating plate (1); A sediment thickness sampling assembly (3) arranged inside the limiting sleeve (2); Wherein, the sediment thickness sampling component (3) comprises: A sampling tube (31) passing through the floating plate (1) and the limiting sleeve (2); A sampling cavity (32) is provided at the central position of the bottom of the sampling tube (31); A transparent window (34) embedded in the outer wall of the sampling tube (31); A scale line (35) coated on the outer wall of the sampling tube (31) at a position close to the transparent window (34); A convex column (36) integrally formed on the outer wall of the sampling tube (31) at a position below the floating plate (1); and A disc (37) integrally formed at the top end of the sampling tube (31); A first steel wire rope (33) embedded in the outer wall of the sampling tube (31) near a position above the floating plate (1); A gravity pressing component (4) disposed above the disc (37); Wherein, the gravity pressing component (4) comprises: a gravity ball (41) disposed above the disc (37); A second steel wire rope (42) is embedded in the top of the gravity ball (41).

2. The pile hole sediment thickness detection device for bored pile construction according to claim 1, characterized in that: It also includes a pile hole guide assembly (5) arranged on the outer side wall of the floating plate (1), wherein the pile hole guide assembly (5) includes: A fixing sleeve (51) fixed to the outer side wall of the floating plate (1) by means of bolts; A support rod (52) embedded in one end of the fixing sleeve (51); A guide wheel (53) rotating on the inner side wall of the support rod (52); A fastening nut (54) is screwed to the top of the fixing sleeve (51) through threaded engagement.

3. The pile hole sediment thickness detection device for bored pile construction according to claim 1, characterized in that: It also includes a pile hole (6) arranged outside the floating plate (1); A slag forming layer (7) and a bearing soil layer (8) are arranged inside the pile hole (6), wherein the slag forming layer (7) is located above the bearing soil layer (8).

4. The pile hole sediment thickness detection device for bored pile construction according to claim 1, characterized in that: A total of four convex columns (36) are provided, and the four convex columns (36) are symmetrically arranged on the outer side wall of the sampling tube (31).

5. The pile hole sediment thickness detection device for bored pile construction according to claim 1, characterized in that: A through hole communicating with the limiting sleeve (2) is provided at a central position of the bottom of the floating plate (1) close to a position directly below the limiting sleeve (2).

6. The pile hole sediment thickness detection device for bored pile construction as claimed in claim 2, characterized in that: A total of four fixing sleeves (51) are provided, and the four fixing sleeves (51) are symmetrically arranged on the outer side wall of the floating plate (1).

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