Dry operation pore-forming sediment thickness detection device

Abstract

The utility model discloses a dry operation pore-forming sediment thickness detection device, which belongs to the technical field of pile foundation engineering and comprises a suspension structure and an insertion structure. The suspension structure comprises a hanging part and a bearing part which are connected with each other, the hanging part is used for being connected with a lifting rope, and the bearing part is used for being connected with an insertion structure; the insertion structure comprises a measuring section and a tip, the top end of the measuring section is connected with the bearing part, the bottom end of the measuring section is connected with the tip, the outer surface of the measuring section is coated with a bonding layer, and the distance between the side, away from the tip, of the bonding layer and the tip is larger than the thickness of sediment to be measured. The insertion structure is lowered to the sediment position at the bottom of the hole through the suspension structure, the tip of the insertion structure can be conveniently inserted into the bottom of sediment, and the bonding layer of the measurement section can be conveniently bonded with the sediment, so that the sediment thickness can be measured through the situation of the sediment bonded on the insertion structure, and the sediment thickness can be directly obtained without calculation; and the detection precision and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation engineering, in particular to a dry operation hole forming sediment thickness detection device. Background Art

[0002] In the field of bridge pile foundation construction, the quality of the pile foundation is directly related to the stability and safety of the entire bridge structure. Among them, the control of the thickness of the sediment at the bottom of the hole is one of the key links to ensure the quality of the pile foundation. During the drilling process, the first hole cleaning and the secondary hole cleaning steps before pouring concrete are aimed at removing impurities such as rock and soil particles and mud remaining in the hole to reduce the negative impact of the sediment on the integrity and bearing capacity of the pile body. According to the engineering design drawings and acceptance standards, the thickness of the sediment at the bottom of the hole must be strictly controlled within a certain range to ensure that the pile foundation meets the design requirements.

[0003] However, in current construction practice, especially for dry drilling environments, the sediment thickness detection method still has certain limitations and inconveniences. Traditionally, the rope method is widely used for detection on construction sites. Although this method is low-cost and easy to operate, it has significant drawbacks: it is necessary to lower two ropes at the same time, one with a sharp hammer to touch the bottom of the hole, and the other with a measuring cake as a reference. The sediment thickness is indirectly calculated by measuring the length difference between the two. This process is not only cumbersome to operate and easily affected by human factors, but also unable to directly and accurately read the sediment thickness value, affecting the detection efficiency and accuracy.

[0004] In view of the above technical bottlenecks, how to develop a technology that can conveniently, accurately and efficiently measure the thickness of the sediment at the bottom of the bridge pile foundation hole has become a technical problem that needs to be urgently solved in the current bridge construction field. Utility Model Content

[0005] The purpose of the utility model is to provide a dry-operation hole-forming sediment thickness detection device to solve the problems existing in the above-mentioned prior art. An insertion structure is lowered to the sediment position at the bottom of the hole through a suspension structure. The pointed head of the insertion structure is convenient for inserting into the bottom of the sediment, and the adhesive layer of the measuring section is convenient for adhering to the sediment. Therefore, the sediment thickness can be measured by the sediment adhering to the insertion structure. The sediment thickness can be directly obtained without calculation, thereby improving the detection accuracy and efficiency.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a device for detecting the thickness of sediment in dry drilling holes, which comprises a suspension structure and an insertion structure; the suspension structure includes a hanging part and a bearing part connected to each other, the hanging part is used for connecting a suspension rope, and the bearing part is used for connecting the insertion structure; the insertion structure includes a measuring section and a pointed head, the top end of the measuring section is connected to the bearing part, the bottom end of the measuring section is connected to the pointed head, a bonding layer is coated on the outer surface of the measuring section, and the distance between the side of the bonding layer away from the pointed head and the pointed head is greater than the thickness of the sediment to be measured.

[0008] In one embodiment, the insertion structure is a steel drill rod.

[0009] In one embodiment, the bonding layer is butter.

[0010] In one embodiment, the bearing part includes a first support ring and first support ribs, the first support ribs are radially distributed and connected to the inner diameter side of the first support ring, and one end of the measuring section is connected to the first support ribs.

[0011] In one embodiment, there is a distance between the position where one end of the measuring section is connected to the first support ribs and the center of the first support ring, and the sizes of the distances corresponding to different measuring sections are different.

[0012] In one embodiment, the hanging part includes a second support ring, and the second support ring is connected to the first support ring through second support ribs.

[0013] In one embodiment, the first support ring and the second support ring have the same diameter and are concentrically arranged, and the planes where the first support ring and the second support ring are located are both perpendicular to the second support ribs.

[0014] In one embodiment, the hanging part further includes third support ribs, and the third support ribs are radially distributed and connected to the inner diameter side of the second support ring.

[0015] In one embodiment, the second support ribs and the third support ribs are connected to the same position of the second support ring as the hanging point for connecting the suspension rope.

[0016] In one embodiment, the number of the first support ribs is greater than the number of the third support ribs, and some of the first support ribs are connected to the second support ribs at the same position of the first support ring.

[0017] The utility model has achieved the following technical effects compared with the prior art:

[0018] The utility model connects a suspension structure through a suspension rope. By using the suspension structure, the insertion structure can be lowered to the position of the sediment at the bottom of the hole. The pointed head of the insertion structure facilitates inserting into the bottom of the sediment, and the bonding layer of the measuring section facilitates adhering to the sediment. Thus, the sediment thickness can be measured based on the sediment adhered to the insertion structure, overcoming the limitations of the traditional measuring rope method, directly obtaining the value of the sediment thickness without calculation, and improving the detection accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of a dry-hole formation sediment thickness detection device according to one embodiment of the present utility model;

[0021] Figure 2 is Figure 1 bottom view;

[0022] Figure 3 is Figure 2 sectional view A-A in

[0023] Figure 4 is Figure 2 sectional view B-B in

[0024] Figure 5 Schematic diagram of a dry-hole formation sediment thickness detection device according to another embodiment of the present utility model;

[0025] Figure 6 Schematic diagram of the matching structure between the dry-hole formation sediment thickness detection device according to the embodiment of the present utility model and the hole;

[0026] Wherein, 1, hole wall; 2, protective layer; 3, spiral stirrup; 4, main reinforcement; 5, stirrup reinforcement; 6, dry-hole formation sediment thickness detection device; 61, first support ring; 62, second support ring; 63, first support rib; 64, second support rib; 65, third support rib; 66, suspension rope; 67, steel drill. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The purpose of the present invention is to provide a dry-hole drilling sediment thickness detection device to solve the problems existing in the prior art. The insertion structure is lowered to the sediment position at the bottom of the hole through a suspension structure. The pointed end of the insertion structure is convenient for inserting into the bottom of the sediment, and the adhesive layer of the measurement section is convenient for adhering to the sediment. Thus, the sediment thickness can be measured based on the sediment adhered to the insertion structure, and the sediment thickness can be directly obtained without calculation, improving the detection accuracy and efficiency.

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] As Figures 1 to 6 shown, the present invention provides a dry-hole drilling sediment thickness detection device, including a suspension structure and an insertion structure. Among them, the suspension structure is used to connect the lifting rope 66, and the insertion structure is used to insert into the sediment at the bottom of the hole. The suspension structure and the insertion structure should have sufficient weight to enable the insertion structure to smoothly insert into the sediment. The suspension structure includes a hanging part and a bearing part connected to each other. The hanging part is used to connect the lifting rope 66, and the bearing part is used to connect the insertion structure. The hanging part and the bearing part can be different parts on the same structure (as Figure 5 shown), or different parts on different structures (as Figure 1 shown). The insertion structure includes a measurement section and a pointed end. The top end of the measurement section is connected to the bearing part, and the bottom end of the measurement section is connected to the pointed end. When inserting into the sediment, the measurement section is kept in a vertical state. Through the setting of the pointed end, the resistance of inserting into the sediment can be reduced. The outer surface of the measurement section is coated with an adhesive layer, which can adhere to the sediment. The distance between the side of the adhesive layer away from the pointed end and the pointed end is greater than the thickness of the measured sediment. When the pointed end touches the bottom of the sediment, the distance between the position of the sediment adhered to the adhesive layer and the pointed end is the thickness of the sediment.

[0031] The present invention connects the suspension structure through the lifting rope 66. The suspension structure can lower the insertion structure to the sediment position at the bottom of the hole. The pointed end of the insertion structure is convenient for inserting into the bottom of the sediment, and the adhesive layer of the measurement section is convenient for adhering to the sediment. Thus, the sediment thickness can be measured based on the sediment adhered to the insertion structure, overcoming the limitations of the traditional measuring rope method. The sediment thickness value can be directly obtained without calculation, improving the detection accuracy and efficiency.

[0032] In one embodiment, the measuring section is provided with scales, eliminating the need to use a measuring tool for measurement. After pulling out the insertion structure, readings can be directly taken on the insertion structure.

[0033] In one embodiment, the suspension structure may further include a counterweight. The counterweight can be an additional added counterweight structure, or it can be the hanging part or the bearing part itself. The weight of the counterweight can be set according to the resistance of the sediment. The resistance of the sediment can be determined through experiments or judged based on experience.

[0034] The insertion structure can be a round bar. The body of the round bar serves as the measuring section, and the end of the round bar is processed into a pointed tip. In one embodiment, the insertion structure is a steel drill rod 67, which is installed on the bearing part by welding. The steel drill rod 67 is a commonly used component in engineering and is easily obtainable.

[0035] In one embodiment, the steel drill rod 67 is made of smooth round steel bars with a diameter of 22 - 25 mm. The drill tip is conical (as the pointed tip), and its length is the maximum allowable height of the sediment + 5 cm.

[0036] The bonding layer can be a viscous grease-like material or a lubricating material, etc., as long as it can mainly adhere to the sediment. In one embodiment, the bonding layer is butter, which is a commonly used material in engineering and is easily obtainable.

[0037] In one embodiment, the bearing part includes a first support ring 61 and first support ribs 63. The first support ring 61 is circular, rectangular or other shapes, with a certain width. The material can be selected as steel bars. The first support ribs 63 are radially distributed and connected to the inner diameter side of the first support ring 61. Through the first support ribs 63, the stiffness of the first support ring 61 can be strengthened to avoid deformation. One end of the measuring section of the insertion structure is connected to the first support ribs 63. The number and position of the insertion structures can be flexibly set. For example, they can be set only at the intersection midpoints of each first support rib 63, and the weight of the entire bearing part is used to insert the insertion structure into the sediment; they can also be distributed on the first support ribs 63 to avoid tilting due to uneven force when the insertion structure is inserted into the sediment.

[0038] In one embodiment, there is a spacing between the position where one end of the measuring section of the insertion structure (such as the steel drill rod 67) is connected to the first support ribs 63 and the center of the first support ring 61. The spacing sizes corresponding to different measuring sections are different. That is to say, the insertion structures are distributed at multiple points within the width range of the first support ring 61, and are distributed at multiple points both radially and circumferentially. Thus, each time a measurement is taken, the sediment conditions at multiple points can be measured.

[0039] In one embodiment, the hanging part is a structure provided independently of the bearing part. The hanging part includes a second support ring 62, and the second support ring 62 is connected to the first support ring 61 through a second support rib 64. Thus, a structure is formed in which the second support ring 62 and the first support ring 61 are arranged at intervals up and down and are connected by the second support rib 64. The material of each structure can be selected as steel bars. The second support rib 64 can be arranged vertically, obliquely, or partially vertically and partially horizontally. In this way, the overall height of the dry-bored hole sediment thickness detection device 6 can be increased. When the dry-bored hole sediment thickness detection device 6 is placed in the hole, as Figure 6 shown, once there is a tendency to skew, through the relationship between the diameters of the first support ring 61 and the second support ring 62 and the hole wall 1, it can be automatically corrected to avoid the inclination of the steel drill rod 67 into the sediment due to the overall skew, which affects the measurement accuracy.

[0040] In one embodiment, both the first support ring 61 and the second support ring 62 adopt a circular ring structure, with the same diameter and concentrically arranged. The planes where the first support ring 61 and the second support ring 62 are located are both perpendicular to the second support rib 64. At this time, the first support ring 61, the second support ring 62, and the second support rib 64 generally form a cylindrical skeleton structure, and the components are connected by welding or other methods. The structure is simple, easy to manufacture, and convenient to be lowered to the bottom of the hole in cooperation with the hole.

[0041] In one embodiment, the hanging part further includes a third support rib 65, and the material can be selected as steel bars. The third support rib 65 is radially distributed and connected to the inner diameter side of the second support ring 62 to improve the stiffness of the second support ring 62 and avoid deformation affecting the measurement accuracy. The number of the third support ribs 65 is set to two, or the number can be set to more than two.

[0042] In one embodiment, the second support rib 64 and the third support rib 65 are connected to the same position of the second support ring 62 as the hanging point for connecting the lifting rope 66. When the dry-bored hole sediment thickness detection device 6 is suspended, the second support rib 64 and the third support rib 65 can be used to provide the bearing strength to avoid the deformation of the second support ring 62 due to stress.

[0043] In one embodiment, the number of the first support ribs 63 is greater than the number of the third support ribs 65. The number of the first support ribs 63 corresponds to the number of the steel drill rods 67. Increasing the number of the first support ribs 63 means increasing the number of the steel drill rods 67. At the same time, using the first support ribs 63 can increase the overall weight (facilitating insertion into the sediment) and improve the stiffness of the bearing part. Some of the first support ribs 63 and the second support rib 64 are connected to the same position of the first support ring 61. Thus, the weight of the first support ring 61, the first support ribs 63, and the steel drill rods 67 is shared by the first support ribs 63 and the first support ring 61 to avoid the deformation of the first support ring 61 due to stress.

[0044] In one embodiment, the dry operation bored hole sediment thickness detection device 6 is formed by connecting a second support ring 62 above and a first support ring 61 below through vertically arranged second support ribs 64. Four first support ribs 63 are evenly distributed inside the first support ring 61. Steel pins 67 are symmetrically arranged on both sides of the center of the circle and each first support rib 63. After evenly applying butter on the outer periphery of the steel pins 67, the dry operation bored hole sediment thickness detection device 6 is slowly lowered to the bottom of the hole, left static for a period of time, such as one minute, and then lifted. The sediment thickness can be measured by the sediment situation adhered to the butter on the steel pins 67. When necessary, to improve the measurement accuracy, the measurement can be repeated multiple times and then the average value is taken. The whole measurement process is more simple and convenient, and the measured value has high accuracy and strong intuitiveness.

[0045] In one embodiment, the height of the second support rib 64 is 0.5 m to 1.0 m. The diameters of the first support ring 61 and the second support ring 62 are the same, and the radii of the two satisfy the following conditions:

[0046] Radius = pile diameter / 2 - cover thickness - 7.5 cm.

[0047] The top view of lowering the dry operation bored hole sediment thickness detection device 6 after hoisting the steel reinforcement cage and before pouring concrete is as Figure 6 shown. There is a steel reinforcement cage between the first support ring 61 and the second support ring 62 of the dry operation bored hole sediment thickness detection device 6 and the hole wall 1. The steel reinforcement cage is composed of stirrup reinforcement 5, main reinforcement 4, and spiral stirrup 3. Usually, considering the durability of the steel bars of the pile foundation structure, the outermost side (outside the spiral stirrup 3) of the steel reinforcement cage does not directly contact the hole wall 1, and a protective layer 2 is provided between the two. The diameter of the steel bars used in the steel reinforcement cage is considered as the larger value under normal circumstances. The stirrup reinforcement 5 is Φ25 mm, the main reinforcement 4 is Φ28 mm, and the spiral stirrup 3 is 12 mm. At the same time, the dry operation bored hole sediment thickness detection device 6 can be smoothly lowered, and there should be a 1 cm distance between it and the steel reinforcement cage. Then the distance from the hole wall 1 to the dry operation bored hole sediment thickness detection device 6 should be: cover thickness + 25 mm + 28 mm + 12 mm + 1 cm = cover thickness + 7.5 cm. The radii of the first support ring 61 and the second support ring 62 = pile diameter / 2 - cover thickness - 7.5 cm.

[0048] Specific examples are applied in the present invention to elaborate on the principle and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A dry drilling sediment thickness detection device, characterized in that: Including suspension structure and insertion structure; The suspension structure comprises a hanging part and a bearing part connected to each other, the hanging part is used to connect the suspension rope, and the bearing part is used to connect the insertion structure; The insertion structure includes a measuring section and a pointed tip, the top end of the measuring section is connected to the bearing part, the bottom end of the measuring section is connected to the pointed tip, the outer surface of the measuring section is coated with an adhesive layer, and the distance between the side of the adhesive layer away from the pointed tip and the pointed tip is greater than the thickness of the sediment to be measured.

2. The dry drilling sediment thickness detection device according to claim 1 is characterized in that: The inserting structure adopts a steel chisel.

3. The dry drilling sediment thickness detection device according to claim 1 is characterized in that: The bonding layer is made of butter.

4. The dry drilling sediment thickness detection device according to claim 1 is characterized in that: The bearing portion includes a first supporting ring and first supporting ribs, the first supporting ribs are radially distributed and connected to the inner diameter side of the first supporting ring, and one end of the measuring section is connected to the first supporting ribs.

5. The dry drilling sediment thickness detection device according to claim 4 is characterized in that: There is a distance between the position where one end of the measuring segment is connected to the first supporting rib and the center of the first supporting ring, and the distances corresponding to different measuring segments are different in size.

6. The dry drilling sediment thickness detection device according to claim 4 is characterized in that: The hanging portion includes a second supporting ring, and the second supporting ring is connected to the first supporting ring through a second supporting rib.

7. The dry drilling sediment thickness detection device according to claim 6 is characterized in that: The first support ring and the second support ring have the same diameter and are concentrically arranged, and the plane where the first support ring is located and the plane where the second support ring is located are both perpendicular to the second support rib.

8. The dry drilling sediment thickness detection device according to claim 7 is characterized in that: The hanging portion further includes third supporting ribs, and the third supporting ribs are radially distributed and connected to the inner diameter side of the second supporting ring.

9. The dry drilling sediment thickness detection device according to claim 8, characterized in that: The second supporting rib and the third supporting rib are connected at the same position of the second supporting ring, serving as a hanging point for connecting a sling.

10. The dry drilling sediment thickness detection device according to claim 8, characterized in that: The number of the first supporting ribs is greater than the number of the third supporting ribs, and some of the first supporting ribs are connected to the second supporting ribs at the same position of the first supporting ring.

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